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Add 'airmouse/' from commit 'abac5b58a6bd8a449805137b5bb9cabc0aeabda8'

git-subtree-dir: airmouse
git-subtree-mainline: d78bfc959898cc10199e67c3fe7e6ef6363ae2c9
git-subtree-split: abac5b58a6bd8a449805137b5bb9cabc0aeabda8
Willy-JL 2 лет назад
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65 измененных файлов с 22977 добавлено и 0 удалено
  1. 35 0
      airmouse/CHANGELOG.md
  2. 29 0
      airmouse/DESCRIPTION.md
  3. 201 0
      airmouse/LICENSE
  4. 62 0
      airmouse/README.md
  5. 155 0
      airmouse/air_mouse.c
  6. 30 0
      airmouse/air_mouse.h
  7. 11 0
      airmouse/application.fam
  8. BIN
      airmouse/icon.png
  9. 5 0
      airmouse/schematic/airmouse_bom.csv
  10. 8 0
      airmouse/schematic/airmouse_cpl.csv
  11. BIN
      airmouse/schematic/airmouse_gerber.zip
  12. BIN
      airmouse/schematic/flipper.jpg
  13. BIN
      airmouse/schematic/render.png
  14. BIN
      airmouse/schematic/schematic.png
  15. BIN
      airmouse/screenshot1.png
  16. BIN
      airmouse/screenshot2.png
  17. BIN
      airmouse/screenshot3.png
  18. 85 0
      airmouse/tracking/calibration_data.cc
  19. 117 0
      airmouse/tracking/calibration_data.h
  20. 5988 0
      airmouse/tracking/imu/bmi160.c
  21. 992 0
      airmouse/tracking/imu/bmi160.h
  22. 1619 0
      airmouse/tracking/imu/bmi160_defs.h
  23. 29 0
      airmouse/tracking/imu/imu.c
  24. 18 0
      airmouse/tracking/imu/imu.h
  25. 88 0
      airmouse/tracking/imu/imu_bmi160.c
  26. 94 0
      airmouse/tracking/imu/imu_lsm6ds3trc.c
  27. 7105 0
      airmouse/tracking/imu/lsm6ds3tr_c_reg.c
  28. 2448 0
      airmouse/tracking/imu/lsm6ds3tr_c_reg.h
  29. 230 0
      airmouse/tracking/main_loop.cc
  30. 21 0
      airmouse/tracking/main_loop.h
  31. 95 0
      airmouse/tracking/orientation_tracker.cc
  32. 68 0
      airmouse/tracking/orientation_tracker.h
  33. 38 0
      airmouse/tracking/sensors/accelerometer_data.h
  34. 313 0
      airmouse/tracking/sensors/gyroscope_bias_estimator.cc
  35. 134 0
      airmouse/tracking/sensors/gyroscope_bias_estimator.h
  36. 38 0
      airmouse/tracking/sensors/gyroscope_data.h
  37. 84 0
      airmouse/tracking/sensors/lowpass_filter.cc
  38. 81 0
      airmouse/tracking/sensors/lowpass_filter.h
  39. 46 0
      airmouse/tracking/sensors/mean_filter.cc
  40. 48 0
      airmouse/tracking/sensors/mean_filter.h
  41. 69 0
      airmouse/tracking/sensors/median_filter.cc
  42. 53 0
      airmouse/tracking/sensors/median_filter.h
  43. 71 0
      airmouse/tracking/sensors/pose_prediction.cc
  44. 55 0
      airmouse/tracking/sensors/pose_prediction.h
  45. 56 0
      airmouse/tracking/sensors/pose_state.h
  46. 336 0
      airmouse/tracking/sensors/sensor_fusion_ekf.cc
  47. 188 0
      airmouse/tracking/sensors/sensor_fusion_ekf.h
  48. 38 0
      airmouse/tracking/util/logging.h
  49. 121 0
      airmouse/tracking/util/matrix_3x3.cc
  50. 138 0
      airmouse/tracking/util/matrix_3x3.h
  51. 87 0
      airmouse/tracking/util/matrix_4x4.cc
  52. 37 0
      airmouse/tracking/util/matrix_4x4.h
  53. 148 0
      airmouse/tracking/util/matrixutils.cc
  54. 65 0
      airmouse/tracking/util/matrixutils.h
  55. 117 0
      airmouse/tracking/util/rotation.cc
  56. 156 0
      airmouse/tracking/util/rotation.h
  57. 251 0
      airmouse/tracking/util/vector.h
  58. 40 0
      airmouse/tracking/util/vectorutils.cc
  59. 76 0
      airmouse/tracking/util/vectorutils.h
  60. 314 0
      airmouse/views/bt_mouse.c
  61. 14 0
      airmouse/views/bt_mouse.h
  62. 69 0
      airmouse/views/calibration.c
  63. 12 0
      airmouse/views/calibration.h
  64. 139 0
      airmouse/views/usb_mouse.c
  65. 12 0
      airmouse/views/usb_mouse.h

+ 35 - 0
airmouse/CHANGELOG.md

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+# Changelog
+
+## v0.0.6 (2023-08-09)
+
+**Fix firmware 0.88 issues**
+
+## v0.0.5 (2023-06-18)
+
+**Closed issues:**
+
+- Error on firmware 0.77.1
+- Flipper Z with airmouse like LG pilot on Android TV
+- PINOUT
+- Noob Question
+- BMI160 alternative?
+
+## v0.0.4 (2023-01-22)
+
+**Closed issues:**
+
+- Request: change directional buttons
+
+**Merged pull requests:**
+
+- Manifest build sources
+
+## v0.0.3 (2022-12-30)
+
+**Closed issues:**
+
+- Firmware requirement?
+
+**Merged pull requests:**
+
+- adjust button function \(add scrolling\)

+ 29 - 0
airmouse/DESCRIPTION.md

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+# Flipper Air Mouse
+
+## What?
+
+The app allows you to turn your Flipper into a USB or Bluetooth air mouse (you do need an extra module, see the Hardware section below)...
+
+Using it is really simple:
+ * Connect the Flipper via a USB cable and pick USB, or pick Bluetooth and pair it with your PC;
+ * Hold the Flipper in your hand with the buttons pointing towards the screen;
+ * Wave your Flipper like you don't care to move the cursor;
+ * Up button for Left mouse click;
+ * Down button for Right mouse click;
+ * Center button for Middle mouse click;
+ * Left and Right buttons for scrolling;
+ * Use calibration menu option if you notice significant drift (place your Flipper onto a level surface, make sure it doesn't move, run this option, wait 2 seconds, done).
+
+## Hardware
+
+The custom module is using Bosch BMI160 accelerometer/gyroscope chip connected via I2C.
+
+Take a look into the schematic folder for Gerber, BOM and CPL files, so you can order directly from JLCPCB.
+
+## Software
+
+The code is based on the original Bosch driver and an orientation tracking implementation from the Google Cardboard project
+
+## License
+
+TL;DR: Use the code however you want, give credit where it's due, no warranty of any kind is provided.

+ 201 - 0
airmouse/LICENSE

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+ 62 - 0
airmouse/README.md

@@ -0,0 +1,62 @@
+# Flipper Air Mouse
+
+[![FlipC.org](https://flipc.org/ginkage/FlippAirMouse/badge)](https://flipc.org/ginkage/FlippAirMouse)
+
+## Brief
+
+> "You can turn anything into an air mouse if you're brave enough"
+
+ — Piper, a.k.a. Pez
+
+Naturally, the quote above applies to [Flipper](https://flipperzero.one/) as well.
+
+## What?
+
+The app allows you to turn your Flipper into a USB or Bluetooth air mouse (you do need an extra module, see the Hardware section below)...
+
+Using it is really simple:
+ * Connect the Flipper via a USB cable and pick `USB`, or pick `Bluetooth` and pair it with your PC;
+ * Hold the Flipper in your hand with the buttons pointing towards the screen;
+ * Wave your Flipper like you don't care to move the cursor;
+ * Up button for Left mouse click;
+ * Down button for Right mouse click;
+ * Center button for Middle mouse click;
+ * Left and Right buttons for scrolling;
+ * Use calibration menu option if you notice significant drift (place your Flipper onto a level surface, make sure it doesn't move, run this option, wait 2 seconds, done).
+
+See early prototype [in action](https://www.youtube.com/watch?v=DdxAmmsYfMA).
+
+## Hardware
+
+The custom module is using Bosch BMI160 accelerometer/gyroscope chip connected via I2C.
+
+Take a look into the [schematic](https://github.com/ginkage/FlippAirMouse/tree/main/schematic) folder for Gerber, BOM and CPL files, so you can order directly from JLCPCB.
+
+Original idea:
+
+![What I thought it would look like](https://github.com/ginkage/FlippAirMouse/blob/main/schematic/schematic.png)
+
+Expectation:
+
+![What EDA though it would look like](https://github.com/ginkage/FlippAirMouse/blob/main/schematic/render.png)
+
+Reality:
+
+![What it looks like](https://github.com/ginkage/FlippAirMouse/blob/main/schematic/flipper.jpg)
+
+## Software
+
+The code is based on the original Bosch [driver](https://github.com/BoschSensortec/BMI160_driver/) and an orientation tracking implementation from the Google [Cardboard](https://github.com/googlevr/cardboard/tree/master/sdk/sensors) project
+
+If you're familiar with Flipper applications, start in the [firmware](https://github.com/flipperdevices/flipperzero-firmware) checkout folder and do the following:
+```
+cd applications/plugins
+git clone https://github.com/ginkage/FlippAirMouse
+cd ../..
+./fbt fap_air_mouse
+```
+If you're not familiar with those, just grab a `fap` file from Releases.
+
+## License
+
+TL;DR: Use the code however you want, give credit where it's due, no warranty of any kind is provided.

+ 155 - 0
airmouse/air_mouse.c

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+#include "air_mouse.h"
+
+#include <furi.h>
+#include <dolphin/dolphin.h>
+
+#include "tracking/imu/imu.h"
+
+#define TAG "AirMouseApp"
+
+enum AirMouseSubmenuIndex {
+    AirMouseSubmenuIndexBtMouse,
+    AirMouseSubmenuIndexUsbMouse,
+    AirMouseSubmenuIndexCalibration,
+};
+
+void air_mouse_submenu_callback(void* context, uint32_t index) {
+    furi_assert(context);
+    AirMouse* app = context;
+    if(index == AirMouseSubmenuIndexBtMouse) {
+        app->view_id = AirMouseViewBtMouse;
+        view_dispatcher_switch_to_view(app->view_dispatcher, AirMouseViewBtMouse);
+    } else if(index == AirMouseSubmenuIndexUsbMouse) {
+        app->view_id = AirMouseViewUsbMouse;
+        view_dispatcher_switch_to_view(app->view_dispatcher, AirMouseViewUsbMouse);
+    } else if(index == AirMouseSubmenuIndexCalibration) {
+        app->view_id = AirMouseViewCalibration;
+        view_dispatcher_switch_to_view(app->view_dispatcher, AirMouseViewCalibration);
+    }
+}
+
+void air_mouse_dialog_callback(DialogExResult result, void* context) {
+    furi_assert(context);
+    AirMouse* app = context;
+    if(result == DialogExResultLeft) {
+        view_dispatcher_switch_to_view(app->view_dispatcher, VIEW_NONE); // Exit
+    } else if(result == DialogExResultRight) {
+        view_dispatcher_switch_to_view(app->view_dispatcher, app->view_id); // Show last view
+    } else if(result == DialogExResultCenter) {
+        view_dispatcher_switch_to_view(app->view_dispatcher, AirMouseViewSubmenu); // Menu
+    }
+}
+
+uint32_t air_mouse_exit_confirm_view(void* context) {
+    UNUSED(context);
+    return AirMouseViewExitConfirm;
+}
+
+uint32_t air_mouse_exit(void* context) {
+    UNUSED(context);
+    return VIEW_NONE;
+}
+
+AirMouse* air_mouse_app_alloc() {
+    AirMouse* app = malloc(sizeof(AirMouse));
+
+    // Gui
+    app->gui = furi_record_open(RECORD_GUI);
+
+    // View dispatcher
+    app->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(app->view_dispatcher);
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    // Submenu view
+    app->submenu = submenu_alloc();
+    submenu_add_item(
+        app->submenu, "Bluetooth", AirMouseSubmenuIndexBtMouse, air_mouse_submenu_callback, app);
+    submenu_add_item(
+        app->submenu, "USB", AirMouseSubmenuIndexUsbMouse, air_mouse_submenu_callback, app);
+    submenu_add_item(
+        app->submenu,
+        "Calibration",
+        AirMouseSubmenuIndexCalibration,
+        air_mouse_submenu_callback,
+        app);
+    view_set_previous_callback(submenu_get_view(app->submenu), air_mouse_exit);
+    view_dispatcher_add_view(
+        app->view_dispatcher, AirMouseViewSubmenu, submenu_get_view(app->submenu));
+
+    // Dialog view
+    app->dialog = dialog_ex_alloc();
+    dialog_ex_set_result_callback(app->dialog, air_mouse_dialog_callback);
+    dialog_ex_set_context(app->dialog, app);
+    dialog_ex_set_left_button_text(app->dialog, "Exit");
+    dialog_ex_set_right_button_text(app->dialog, "Stay");
+    dialog_ex_set_center_button_text(app->dialog, "Menu");
+    dialog_ex_set_header(app->dialog, "Close Current App?", 16, 12, AlignLeft, AlignTop);
+    view_dispatcher_add_view(
+        app->view_dispatcher, AirMouseViewExitConfirm, dialog_ex_get_view(app->dialog));
+
+    // Bluetooth view
+    app->bt_mouse = bt_mouse_alloc(app->view_dispatcher);
+    view_set_previous_callback(bt_mouse_get_view(app->bt_mouse), air_mouse_exit_confirm_view);
+    view_dispatcher_add_view(
+        app->view_dispatcher, AirMouseViewBtMouse, bt_mouse_get_view(app->bt_mouse));
+
+    // USB view
+    app->usb_mouse = usb_mouse_alloc(app->view_dispatcher);
+    view_set_previous_callback(usb_mouse_get_view(app->usb_mouse), air_mouse_exit_confirm_view);
+    view_dispatcher_add_view(
+        app->view_dispatcher, AirMouseViewUsbMouse, usb_mouse_get_view(app->usb_mouse));
+
+    // Calibration view
+    app->calibration = calibration_alloc(app->view_dispatcher);
+    view_set_previous_callback(
+        calibration_get_view(app->calibration), air_mouse_exit_confirm_view);
+    view_dispatcher_add_view(
+        app->view_dispatcher, AirMouseViewCalibration, calibration_get_view(app->calibration));
+
+    app->view_id = AirMouseViewSubmenu;
+    view_dispatcher_switch_to_view(app->view_dispatcher, app->view_id);
+
+    return app;
+}
+
+void air_mouse_app_free(AirMouse* app) {
+    furi_assert(app);
+
+    // Free views
+    view_dispatcher_remove_view(app->view_dispatcher, AirMouseViewSubmenu);
+    submenu_free(app->submenu);
+    view_dispatcher_remove_view(app->view_dispatcher, AirMouseViewExitConfirm);
+    dialog_ex_free(app->dialog);
+    view_dispatcher_remove_view(app->view_dispatcher, AirMouseViewBtMouse);
+    bt_mouse_free(app->bt_mouse);
+    view_dispatcher_remove_view(app->view_dispatcher, AirMouseViewUsbMouse);
+    usb_mouse_free(app->usb_mouse);
+    view_dispatcher_remove_view(app->view_dispatcher, AirMouseViewCalibration);
+    calibration_free(app->calibration);
+    view_dispatcher_free(app->view_dispatcher);
+
+    // Close records
+    furi_record_close(RECORD_GUI);
+    app->gui = NULL;
+
+    // Free rest
+    free(app);
+}
+
+int32_t air_mouse_app(void* p) {
+    UNUSED(p);
+
+    AirMouse* app = air_mouse_app_alloc();
+    if(!imu_begin()) {
+        air_mouse_app_free(app);
+        return -1;
+    }
+
+    view_dispatcher_run(app->view_dispatcher);
+
+    imu_end();
+    air_mouse_app_free(app);
+
+    return 0;
+}

+ 30 - 0
airmouse/air_mouse.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <gui/gui.h>
+#include <gui/view.h>
+#include <gui/view_dispatcher.h>
+#include <gui/modules/submenu.h>
+#include <gui/modules/dialog_ex.h>
+
+#include "views/bt_mouse.h"
+#include "views/usb_mouse.h"
+#include "views/calibration.h"
+
+typedef struct {
+    Gui* gui;
+    ViewDispatcher* view_dispatcher;
+    Submenu* submenu;
+    DialogEx* dialog;
+    BtMouse* bt_mouse;
+    UsbMouse* usb_mouse;
+    Calibration* calibration;
+    uint32_t view_id;
+} AirMouse;
+
+typedef enum {
+    AirMouseViewSubmenu,
+    AirMouseViewBtMouse,
+    AirMouseViewUsbMouse,
+    AirMouseViewCalibration,
+    AirMouseViewExitConfirm,
+} AirMouseView;

+ 11 - 0
airmouse/application.fam

@@ -0,0 +1,11 @@
+App(
+    appid="air_mouse",
+    name="Air Mouse",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="air_mouse_app",
+    stack_size=10 * 1024,
+    fap_category="GPIO",
+    fap_icon="icon.png",
+    fap_version="0.8",
+    sources=["*.c", "*.cc"],
+)

BIN
airmouse/icon.png


+ 5 - 0
airmouse/schematic/airmouse_bom.csv

@@ -0,0 +1,5 @@
+ID	Name	Designator	Footprint	Quantity	Manufacturer Part	Manufacturer	Supplier	Supplier Part	Price
+"1"	"100nF"	"C1"	"C0603"	"1"	"CC0603KRX7R9BB104"	"YAGEO"	"LCSC"	"C14663"	""
+"2"	"Header-Male-2.54_1x10"	"H1"	"HDR-TH_10P-P2.54-V-M-1"	"1"	"Headers  Pins2.54mm1*10P"	""	"LCSC"	"C57369"	""
+"3"	"3.9kΩ"	"R1,R2,R3,R4"	"R0603"	"4"	"0603WAF3901T5E"	"UNI-ROYAL(Uniroyal Elec)"	"LCSC"	"C23018"	""
+"4"	"BMI160"	"U1"	"LGA-14_L3.0-W2.5-P0.50-BL"	"1"	"BMI160"	"Bosch"	"LCSC"	"C94021"	""

+ 8 - 0
airmouse/schematic/airmouse_cpl.csv

@@ -0,0 +1,8 @@
+Designator	Footprint	Mid X	Mid Y	Ref X	Ref Y	Pad X	Pad Y	Layer	Rotation	Comment
+"C1"	"C0603"	"22.86mm"	"-6.86mm"	"22.86mm"	"-6.86mm"	"22.16mm"	"-6.86mm"	"T"	"0"	"100nF"
+"H1"	"HDR-TH_10P-P2.54-V-M-1"	"13.97mm"	"-2.54mm"	"13.97mm"	"-2.54mm"	"25.4mm"	"-2.54mm"	"B"	"180"	"Header-Male-2.54_1x10"
+"R1"	"R0603"	"7.62mm"	"-6.86mm"	"7.62mm"	"-6.86mm"	"7.62mm"	"-7.61mm"	"T"	"90"	"3.9kΩ"
+"R2"	"R0603"	"5.08mm"	"-6.86mm"	"5.08mm"	"-6.86mm"	"5.08mm"	"-7.61mm"	"T"	"90"	"3.9kΩ"
+"R3"	"R0603"	"10.16mm"	"-6.86mm"	"10.16mm"	"-6.86mm"	"10.16mm"	"-7.61mm"	"T"	"90"	"3.9kΩ"
+"R4"	"R0603"	"17.78mm"	"-6.86mm"	"17.78mm"	"-6.86mm"	"17.78mm"	"-6.1mm"	"T"	"270"	"3.9kΩ"
+"U1"	"LGA-14_L3.0-W2.5-P0.50-BL"	"13.97mm"	"-6.86mm"	"13.97mm"	"-6.86mm"	"12.58mm"	"-6.11mm"	"T"	"270"	"BMI160"

BIN
airmouse/schematic/airmouse_gerber.zip


BIN
airmouse/schematic/flipper.jpg


BIN
airmouse/schematic/render.png


BIN
airmouse/schematic/schematic.png


BIN
airmouse/screenshot1.png


BIN
airmouse/screenshot2.png


BIN
airmouse/screenshot3.png


+ 85 - 0
airmouse/tracking/calibration_data.cc

@@ -0,0 +1,85 @@
+#include <furi.h>
+#include <furi_hal.h>
+
+#define TAG "tracker"
+
+#include "calibration_data.h"
+
+#include <cmath>
+#include <algorithm>
+
+// Student's distribution T value for 95% (two-sided) confidence interval.
+static const double Tn = 1.960;
+
+// Number of samples (degrees of freedom) for the corresponding T values.
+static const int Nn = 200;
+
+void CalibrationData::reset()
+{
+    complete = false;
+    count = 0;
+    sum = Vector::Zero();
+    sumSq = Vector::Zero();
+    mean = Vector::Zero();
+    median = Vector::Zero();
+    sigma = Vector::Zero();
+    delta = Vector::Zero();
+    xData.clear();
+    yData.clear();
+    zData.clear();
+}
+
+bool CalibrationData::add(Vector& data)
+{
+    if (complete) {
+        return true;
+    }
+
+    xData.push_back(data[0]);
+    yData.push_back(data[1]);
+    zData.push_back(data[2]);
+
+    sum += data;
+    sumSq += data * data;
+    count++;
+
+    if (count >= Nn) {
+        calcDelta();
+        complete = true;
+    }
+
+    return complete;
+}
+
+static inline double medianOf(std::vector<double>& list)
+{
+    std::sort(list.begin(), list.end());
+    int count = list.size();
+    int middle = count / 2;
+    return (count % 2 == 1) ? list[middle] : (list[middle - 1] + list[middle]) / 2.0l;
+}
+
+void CalibrationData::calcDelta()
+{
+    median.Set(medianOf(xData), medianOf(yData), medianOf(zData));
+
+    mean = sum / count;
+    Vector m2 = mean * mean;
+    Vector d = sumSq / count - m2;
+    Vector s2 = (d * count) / (count - 1);
+    sigma = Vector(std::sqrt(d[0]), std::sqrt(d[1]), std::sqrt(d[2]));
+    Vector s = Vector(std::sqrt(s2[0]), std::sqrt(s2[1]), std::sqrt(s2[2]));
+    delta = s * Tn / std::sqrt((double)count);
+    Vector low = mean - delta;
+    Vector high = mean + delta;
+
+    FURI_LOG_I(TAG,
+        "M[x] = { %f ... %f }  //  median = %f  //  avg = %f  //  delta = %f  //  sigma = %f",
+        low[0], high[0], median[0], mean[0], delta[0], sigma[0]);
+    FURI_LOG_I(TAG,
+        "M[y] = { %f ... %f }  //  median = %f  //  avg = %f  //  delta = %f  //  sigma = %f",
+        low[1], high[1], median[1], mean[1], delta[1], sigma[1]);
+    FURI_LOG_I(TAG,
+        "M[z] = { %f ... %f }  //  median = %f  //  avg = %f  //  delta = %f  //  sigma = %f",
+        low[2], high[2], median[2], mean[2], delta[2], sigma[2]);
+}

+ 117 - 0
airmouse/tracking/calibration_data.h

@@ -0,0 +1,117 @@
+#pragma once
+
+#include <toolbox/saved_struct.h>
+#include <storage/storage.h>
+#include <vector>
+
+#include "util/vector.h"
+
+#define CALIBRATION_DATA_VER (1)
+#define CALIBRATION_DATA_FILE_NAME ".calibration.data"
+#define CALIBRATION_DATA_PATH INT_PATH(CALIBRATION_DATA_FILE_NAME)
+#define CALIBRATION_DATA_MAGIC (0x23)
+
+#define CALIBRATION_DATA_SAVE(x)   \
+    saved_struct_save(             \
+        CALIBRATION_DATA_PATH,     \
+        (x),                       \
+        sizeof(CalibrationMedian), \
+        CALIBRATION_DATA_MAGIC,    \
+        CALIBRATION_DATA_VER)
+
+#define CALIBRATION_DATA_LOAD(x)   \
+    saved_struct_load(             \
+        CALIBRATION_DATA_PATH,     \
+        (x),                       \
+        sizeof(CalibrationMedian), \
+        CALIBRATION_DATA_MAGIC,    \
+        CALIBRATION_DATA_VER)
+
+typedef struct {
+    double x;
+    double y;
+    double z;
+} CalibrationMedian;
+
+typedef cardboard::Vector3 Vector;
+
+/**
+ * Helper class to gather some stats and store the calibration data. Right now it calculates a lot
+ * more stats than actually needed. Some of them are used for logging the sensors quality (and
+ * filing bugs), other may be required in the future, e.g. for bias.
+ */
+class CalibrationData {
+public:
+    /**
+     * Check if the sensors were calibrated before.
+     *
+     * @return {@code true} if calibration data is available, or {@code false} otherwise.
+     */
+    bool isComplete() {
+        return complete;
+    }
+
+    /** Prepare to collect new calibration data. */
+    void reset();
+
+    /**
+     * Retrieve the median gyroscope readings.
+     *
+     * @return Three-axis median vector.
+     */
+    Vector getMedian() {
+        return median;
+    }
+
+    /**
+     * Retrieve the mean gyroscope readings.
+     *
+     * @return Three-axis mean vector.
+     */
+    Vector getMean() {
+        return mean;
+    }
+
+    /**
+     * Retrieve the standard deviation of gyroscope readings.
+     *
+     * @return Three-axis standard deviation vector.
+     */
+    Vector getSigma() {
+        return sigma;
+    }
+
+    /**
+     * Retrieve the confidence interval size of gyroscope readings.
+     *
+     * @return Three-axis confidence interval size vector.
+     */
+    Vector getDelta() {
+        return delta;
+    }
+
+    /**
+     * Add a new gyroscope reading to the stats.
+     *
+     * @param data gyroscope values vector.
+     * @return {@code true} if we now have enough data for calibration, or {@code false} otherwise.
+     */
+    bool add(Vector& data);
+
+private:
+    // Calculates the confidence interval (mean +- delta) and some other related values, like
+    // standard deviation, etc. See https://en.wikipedia.org/wiki/Student%27s_t-distribution
+    void calcDelta();
+
+    int count;
+    bool complete;
+    Vector sum;
+    Vector sumSq;
+    Vector mean;
+    Vector median;
+    Vector sigma;
+    Vector delta;
+    std::vector<double> xData;
+    std::vector<double> yData;
+    std::vector<double> zData;
+};

+ 5988 - 0
airmouse/tracking/imu/bmi160.c

@@ -0,0 +1,5988 @@
+/**
+* Copyright (c) 2021 Bosch Sensortec GmbH. All rights reserved.
+*
+* BSD-3-Clause
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright
+*    notice, this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright
+*    notice, this list of conditions and the following disclaimer in the
+*    documentation and/or other materials provided with the distribution.
+*
+* 3. Neither the name of the copyright holder nor the names of its
+*    contributors may be used to endorse or promote products derived from
+*    this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+*
+* @file       bmi160.c
+* @date       2021-10-05
+* @version    v3.9.2
+*
+*/
+
+#include "bmi160.h"
+
+/* Below look up table follows the enum bmi160_int_types.
+ * Hence any change should match to the enum bmi160_int_types
+ */
+const uint8_t int_mask_lookup_table[13] = {
+    BMI160_INT1_SLOPE_MASK,
+    BMI160_INT1_SLOPE_MASK,
+    BMI160_INT2_LOW_STEP_DETECT_MASK,
+    BMI160_INT1_DOUBLE_TAP_MASK,
+    BMI160_INT1_SINGLE_TAP_MASK,
+    BMI160_INT1_ORIENT_MASK,
+    BMI160_INT1_FLAT_MASK,
+    BMI160_INT1_HIGH_G_MASK,
+    BMI160_INT1_LOW_G_MASK,
+    BMI160_INT1_NO_MOTION_MASK,
+    BMI160_INT2_DATA_READY_MASK,
+    BMI160_INT2_FIFO_FULL_MASK,
+    BMI160_INT2_FIFO_WM_MASK};
+
+/*********************************************************************/
+/* Static function declarations */
+
+/*!
+ * @brief This API configures the pins to fire the
+ * interrupt signal when it occurs
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t
+    set_intr_pin_config(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the any-motion interrupt of the sensor.
+ * This interrupt occurs when accel values exceeds preset threshold
+ * for a certain period of time.
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t
+    set_accel_any_motion_int(struct bmi160_int_settg* int_config, struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets tap interrupts.Interrupt is fired when
+ * tap movements happen.
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t set_accel_tap_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the data ready interrupt for both accel and gyro.
+ * This interrupt occurs when new accel and gyro data come.
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t set_accel_gyro_data_ready_int(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the significant motion interrupt of the sensor.This
+ * interrupt occurs when there is change in user location.
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t
+    set_accel_sig_motion_int(struct bmi160_int_settg* int_config, struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the no motion/slow motion interrupt of the sensor.
+ * Slow motion is similar to any motion interrupt.No motion interrupt
+ * occurs when slope bet. two accel values falls below preset threshold
+ * for preset duration.
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t
+    set_accel_no_motion_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the step detection interrupt.This interrupt
+ * occurs when the single step causes accel values to go above
+ * preset threshold.
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t
+    set_accel_step_detect_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the orientation interrupt of the sensor.This
+ * interrupt occurs when there is orientation change in the sensor
+ * with respect to gravitational field vector g.
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t
+    set_accel_orientation_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the flat interrupt of the sensor.This interrupt
+ * occurs in case of flat orientation
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t
+    set_accel_flat_detect_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the low-g interrupt of the sensor.This interrupt
+ * occurs during free-fall.
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t
+    set_accel_low_g_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the high-g interrupt of the sensor.The interrupt
+ * occurs if the absolute value of acceleration data of any enabled axis
+ * exceeds the programmed threshold and the sign of the value does not
+ * change for a preset duration.
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t
+    set_accel_high_g_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the default configuration parameters of accel & gyro.
+ * Also maintain the previous state of configurations.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static void default_param_settg(struct bmi160_dev* dev);
+
+/*!
+ * @brief This API is used to validate the device structure pointer for
+ * null conditions.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t null_ptr_check(const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API set the accel configuration.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t set_accel_conf(struct bmi160_dev* dev);
+
+/*!
+ * @brief This API gets the accel configuration.
+ *
+ * @param[out] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t get_accel_conf(struct bmi160_dev* dev);
+
+/*!
+ * @brief This API check the accel configuration.
+ *
+ * @param[in] data        : Pointer to store the updated accel config.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t check_accel_config(uint8_t* data, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API process the accel odr.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t process_accel_odr(uint8_t* data, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API process the accel bandwidth.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t process_accel_bw(uint8_t* data, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API process the accel range.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t process_accel_range(uint8_t* data, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API checks the invalid settings for ODR & Bw for Accel and Gyro.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t check_invalid_settg(const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API set the gyro configuration.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t set_gyro_conf(struct bmi160_dev* dev);
+
+/*!
+ * @brief This API get the gyro configuration.
+ *
+ * @param[out] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t get_gyro_conf(struct bmi160_dev* dev);
+
+/*!
+ * @brief This API check the gyro configuration.
+ *
+ * @param[in] data        : Pointer to store the updated gyro config.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t check_gyro_config(uint8_t* data, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API process the gyro odr.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t process_gyro_odr(uint8_t* data, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API process the gyro bandwidth.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t process_gyro_bw(uint8_t* data, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API process the gyro range.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t process_gyro_range(uint8_t* data, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the accel power mode.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t set_accel_pwr(struct bmi160_dev* dev);
+
+/*!
+ * @brief This API process the undersampling setting of Accel.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t process_under_sampling(uint8_t* data, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API sets the gyro power mode.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error.
+ */
+static int8_t set_gyro_pwr(struct bmi160_dev* dev);
+
+/*!
+ * @brief This API reads accel data along with sensor time if time is requested
+ * by user. Kindly refer the user guide(README.md) for more info.
+ *
+ * @param[in] len    : len to read no of bytes
+ * @param[out] accel    : Structure pointer to store accel data
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    get_accel_data(uint8_t len, struct bmi160_sensor_data* accel, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API reads accel data along with sensor time if time is requested
+ * by user. Kindly refer the user guide(README.md) for more info.
+ *
+ * @param[in] len    : len to read no of bytes
+ * @param[out] gyro    : Structure pointer to store accel data
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    get_gyro_data(uint8_t len, struct bmi160_sensor_data* gyro, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API reads accel and gyro data along with sensor time
+ * if time is requested by user.
+ * Kindly refer the user guide(README.md) for more info.
+ *
+ * @param[in] len    : len to read no of bytes
+ * @param[out] accel    : Structure pointer to store accel data
+ * @param[out] gyro    : Structure pointer to store accel data
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t get_accel_gyro_data(
+    uint8_t len,
+    struct bmi160_sensor_data* accel,
+    struct bmi160_sensor_data* gyro,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables the any-motion interrupt for accel.
+ *
+ * @param[in] any_motion_int_cfg   : Structure instance of
+ *                   bmi160_acc_any_mot_int_cfg.
+ * @param[in] dev          : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_accel_any_motion_int(
+    const struct bmi160_acc_any_mot_int_cfg* any_motion_int_cfg,
+    struct bmi160_dev* dev);
+
+/*!
+ * @brief This API disable the sig-motion interrupt.
+ *
+ * @param[in] dev   : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t disable_sig_motion_int(const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the source of data(filter & pre-filter)
+ * for any-motion interrupt.
+ *
+ * @param[in] any_motion_int_cfg  : Structure instance of
+ *                  bmi160_acc_any_mot_int_cfg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_any_motion_src(
+    const struct bmi160_acc_any_mot_int_cfg* any_motion_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the duration and threshold of
+ * any-motion interrupt.
+ *
+ * @param[in] any_motion_int_cfg  : Structure instance of
+ *                  bmi160_acc_any_mot_int_cfg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_any_dur_threshold(
+    const struct bmi160_acc_any_mot_int_cfg* any_motion_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure necessary setting of any-motion interrupt.
+ *
+ * @param[in] int_config       : Structure instance of bmi160_int_settg.
+ * @param[in] any_motion_int_cfg   : Structure instance of
+ *                   bmi160_acc_any_mot_int_cfg.
+ * @param[in] dev          : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_any_motion_int_settg(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_any_mot_int_cfg* any_motion_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enable the data ready interrupt.
+ *
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_data_ready_int(const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables the no motion/slow motion interrupt.
+ *
+ * @param[in] no_mot_int_cfg    : Structure instance of
+ *                bmi160_acc_no_motion_int_cfg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_no_motion_int(
+    const struct bmi160_acc_no_motion_int_cfg* no_mot_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the interrupt PIN setting for
+ * no motion/slow motion interrupt.
+ *
+ * @param[in] int_config    : structure instance of bmi160_int_settg.
+ * @param[in] no_mot_int_cfg    : Structure instance of
+ *                bmi160_acc_no_motion_int_cfg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_no_motion_int_settg(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_no_motion_int_cfg* no_mot_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the source of interrupt for no motion.
+ *
+ * @param[in] no_mot_int_cfg    : Structure instance of
+ *                bmi160_acc_no_motion_int_cfg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_no_motion_data_src(
+    const struct bmi160_acc_no_motion_int_cfg* no_mot_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the duration and threshold of
+ * no motion/slow motion interrupt along with selection of no/slow motion.
+ *
+ * @param[in] no_mot_int_cfg    : Structure instance of
+ *                bmi160_acc_no_motion_int_cfg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_no_motion_dur_thr(
+    const struct bmi160_acc_no_motion_int_cfg* no_mot_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables the sig-motion motion interrupt.
+ *
+ * @param[in] sig_mot_int_cfg   : Structure instance of
+ *                bmi160_acc_sig_mot_int_cfg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_sig_motion_int(
+    const struct bmi160_acc_sig_mot_int_cfg* sig_mot_int_cfg,
+    struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the interrupt PIN setting for
+ * significant motion interrupt.
+ *
+ * @param[in] int_config    : Structure instance of bmi160_int_settg.
+ * @param[in] sig_mot_int_cfg   : Structure instance of
+ *                bmi160_acc_sig_mot_int_cfg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_sig_motion_int_settg(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_sig_mot_int_cfg* sig_mot_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the source of data(filter & pre-filter)
+ * for sig motion interrupt.
+ *
+ * @param[in] sig_mot_int_cfg   : Structure instance of
+ *                bmi160_acc_sig_mot_int_cfg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_sig_motion_data_src(
+    const struct bmi160_acc_sig_mot_int_cfg* sig_mot_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the threshold, skip and proof time of
+ * sig motion interrupt.
+ *
+ * @param[in] sig_mot_int_cfg   : Structure instance of
+ *                bmi160_acc_sig_mot_int_cfg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_sig_dur_threshold(
+    const struct bmi160_acc_sig_mot_int_cfg* sig_mot_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables the step detector interrupt.
+ *
+ * @param[in] step_detect_int_cfg   : Structure instance of
+ *                    bmi160_acc_step_detect_int_cfg.
+ * @param[in] dev           : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_step_detect_int(
+    const struct bmi160_acc_step_detect_int_cfg* step_detect_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the step detector parameter.
+ *
+ * @param[in] step_detect_int_cfg   : Structure instance of
+ *                    bmi160_acc_step_detect_int_cfg.
+ * @param[in] dev           : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_step_detect(
+    const struct bmi160_acc_step_detect_int_cfg* step_detect_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables the single/double tap interrupt.
+ *
+ * @param[in] int_config    : Structure instance of bmi160_int_settg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_tap_int(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_tap_int_cfg* tap_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the interrupt PIN setting for
+ * tap interrupt.
+ *
+ * @param[in] int_config    : Structure instance of bmi160_int_settg.
+ * @param[in] tap_int_cfg   : Structure instance of bmi160_acc_tap_int_cfg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_tap_int_settg(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_tap_int_cfg* tap_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the source of data(filter & pre-filter)
+ * for tap interrupt.
+ *
+ * @param[in] tap_int_cfg   : Structure instance of bmi160_acc_tap_int_cfg.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_tap_data_src(
+    const struct bmi160_acc_tap_int_cfg* tap_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the  parameters of tap interrupt.
+ * Threshold, quite, shock, and duration.
+ *
+ * @param[in] int_config    : Structure instance of bmi160_int_settg.
+ * @param[in] tap_int_cfg   : Structure instance of bmi160_acc_tap_int_cfg.
+ * @param[in] dev       : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_tap_param(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_tap_int_cfg* tap_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enable the external mode configuration.
+ *
+ * @param[in] dev   : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_sec_if(const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the ODR of the auxiliary sensor.
+ *
+ * @param[in] dev   : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_aux_odr(const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API maps the actual burst read length set by user.
+ *
+ * @param[in] len   : Pointer to store the read length.
+ * @param[in] dev   : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t map_read_len(uint16_t* len, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the settings of auxiliary sensor.
+ *
+ * @param[in] dev   : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_aux_settg(const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API extract the read data from auxiliary sensor.
+ *
+ * @param[in] map_len     : burst read value.
+ * @param[in] reg_addr    : Address of register to read.
+ * @param[in] aux_data    : Pointer to store the read data.
+ * @param[in] len     : length to read the data.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ * @note : Refer user guide for detailed info.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success / -ve value -> Error
+ */
+static int8_t extract_aux_read(
+    uint16_t map_len,
+    uint8_t reg_addr,
+    uint8_t* aux_data,
+    uint16_t len,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables the orient interrupt.
+ *
+ * @param[in] orient_int_cfg : Structure instance of bmi160_acc_orient_int_cfg.
+ * @param[in] dev        : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_orient_int(
+    const struct bmi160_acc_orient_int_cfg* orient_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the necessary setting of orientation interrupt.
+ *
+ * @param[in] orient_int_cfg : Structure instance of bmi160_acc_orient_int_cfg.
+ * @param[in] dev        : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_orient_int_settg(
+    const struct bmi160_acc_orient_int_cfg* orient_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables the flat interrupt.
+ *
+ * @param[in] flat_int  : Structure instance of bmi160_acc_flat_detect_int_cfg.
+ * @param[in] dev       : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_flat_int(
+    const struct bmi160_acc_flat_detect_int_cfg* flat_int,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the necessary setting of flat interrupt.
+ *
+ * @param[in] flat_int  : Structure instance of bmi160_acc_flat_detect_int_cfg.
+ * @param[in] dev   : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_flat_int_settg(
+    const struct bmi160_acc_flat_detect_int_cfg* flat_int,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables the Low-g interrupt.
+ *
+ * @param[in] low_g_int : Structure instance of bmi160_acc_low_g_int_cfg.
+ * @param[in] dev   : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_low_g_int(
+    const struct bmi160_acc_low_g_int_cfg* low_g_int,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the source of data(filter & pre-filter) for low-g interrupt.
+ *
+ * @param[in] low_g_int : Structure instance of bmi160_acc_low_g_int_cfg.
+ * @param[in] dev   : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_low_g_data_src(
+    const struct bmi160_acc_low_g_int_cfg* low_g_int,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the necessary setting of low-g interrupt.
+ *
+ * @param[in] low_g_int : Structure instance of bmi160_acc_low_g_int_cfg.
+ * @param[in] dev   : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_low_g_int_settg(
+    const struct bmi160_acc_low_g_int_cfg* low_g_int,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables the high-g interrupt.
+ *
+ * @param[in] high_g_int_cfg : Structure instance of bmi160_acc_high_g_int_cfg.
+ * @param[in] dev        : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_high_g_int(
+    const struct bmi160_acc_high_g_int_cfg* high_g_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the source of data(filter & pre-filter)
+ * for high-g interrupt.
+ *
+ * @param[in] high_g_int_cfg : Structure instance of bmi160_acc_high_g_int_cfg.
+ * @param[in] dev        : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_high_g_data_src(
+    const struct bmi160_acc_high_g_int_cfg* high_g_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the necessary setting of high-g interrupt.
+ *
+ * @param[in] high_g_int_cfg : Structure instance of bmi160_acc_high_g_int_cfg.
+ * @param[in] dev        : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t config_high_g_int_settg(
+    const struct bmi160_acc_high_g_int_cfg* high_g_int_cfg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the behavioural setting of interrupt pin.
+ *
+ * @param[in] int_config    : Structure instance of bmi160_int_settg.
+ * @param[in] dev       : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    config_int_out_ctrl(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API configure the mode(input enable, latch or non-latch) of interrupt pin.
+ *
+ * @param[in] int_config    : Structure instance of bmi160_int_settg.
+ * @param[in] dev       : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    config_int_latch(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API performs the self test for accelerometer of BMI160
+ *
+ * @param[in] dev   : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t perform_accel_self_test(struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables to perform the accel self test by setting proper
+ * configurations to facilitate accel self test
+ *
+ * @param[in] dev   : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_accel_self_test(struct bmi160_dev* dev);
+
+/*!
+ * @brief This API performs accel self test with positive excitation
+ *
+ * @param[in] accel_pos : Structure pointer to store accel data
+ *                        for positive excitation
+ * @param[in] dev   : structure instance of bmi160_dev
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t accel_self_test_positive_excitation(
+    struct bmi160_sensor_data* accel_pos,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API performs accel self test with negative excitation
+ *
+ * @param[in] accel_neg : Structure pointer to store accel data
+ *                        for negative excitation
+ * @param[in] dev   : structure instance of bmi160_dev
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t accel_self_test_negative_excitation(
+    struct bmi160_sensor_data* accel_neg,
+    const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API validates the accel self test results
+ *
+ * @param[in] accel_pos : Structure pointer to store accel data
+ *                        for positive excitation
+ * @param[in] accel_neg : Structure pointer to store accel data
+ *                        for negative excitation
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error / +ve value -> Self test fail
+ */
+static int8_t validate_accel_self_test(
+    const struct bmi160_sensor_data* accel_pos,
+    const struct bmi160_sensor_data* accel_neg);
+
+/*!
+ * @brief This API performs the self test for gyroscope of BMI160
+ *
+ * @param[in] dev   : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t perform_gyro_self_test(const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API enables the self test bit to trigger self test for gyro
+ *
+ * @param[in] dev   : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t enable_gyro_self_test(const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API validates the self test results of gyro
+ *
+ * @param[in] dev   : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t validate_gyro_self_test(const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API sets FIFO full interrupt of the sensor.This interrupt
+ *  occurs when the FIFO is full and the next full data sample would cause
+ *  a FIFO overflow, which may delete the old samples.
+ *
+ * @param[in] int_config    : Structure instance of bmi160_int_settg.
+ * @param[in] dev       : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    set_fifo_full_int(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This enable the FIFO full interrupt engine.
+ *
+ * @param[in] int_config    : Structure instance of bmi160_int_settg.
+ * @param[in] dev       : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    enable_fifo_full_int(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API sets FIFO watermark interrupt of the sensor.The FIFO
+ *  watermark interrupt is fired, when the FIFO fill level is above a fifo
+ *  watermark.
+ *
+ * @param[in] int_config    : Structure instance of bmi160_int_settg.
+ * @param[in] dev       : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    set_fifo_watermark_int(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This enable the FIFO watermark interrupt engine.
+ *
+ * @param[in] int_config    : Structure instance of bmi160_int_settg.
+ * @param[in] dev       : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    enable_fifo_wtm_int(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ * @brief This API is used to reset the FIFO related configurations
+ *  in the fifo_frame structure.
+ *
+ * @param[in] dev       : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static void reset_fifo_data_structure(const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to read number of bytes filled
+ *  currently in FIFO buffer.
+ *
+ *  @param[in] bytes_to_read  : Number of bytes available in FIFO at the
+ *                              instant which is obtained from FIFO counter.
+ *  @param[in] dev            : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success / -ve value -> Error.
+ *  @retval Any non zero value -> Fail
+ *
+ */
+static int8_t get_fifo_byte_counter(uint16_t* bytes_to_read, struct bmi160_dev const* dev);
+
+/*!
+ *  @brief This API is used to compute the number of bytes of accel FIFO data
+ *  which is to be parsed in header-less mode
+ *
+ *  @param[out] data_index        : The start index for parsing data
+ *  @param[out] data_read_length  : Number of bytes to be parsed
+ *  @param[in]  acc_frame_count   : Number of accelerometer frames to be read
+ *  @param[in]  dev               : Structure instance of bmi160_dev.
+ *
+ */
+static void get_accel_len_to_parse(
+    uint16_t* data_index,
+    uint16_t* data_read_length,
+    const uint8_t* acc_frame_count,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse the accelerometer data from the
+ *  FIFO data in both header mode and header-less mode.
+ *  It updates the idx value which is used to store the index of
+ *  the current data byte which is parsed.
+ *
+ *  @param[in,out] acc      : structure instance of sensor data
+ *  @param[in,out] idx      : Index value of number of bytes parsed
+ *  @param[in,out] acc_idx  : Index value of accelerometer data
+ *                                (x,y,z axes) frames parsed
+ *  @param[in] frame_info       : It consists of either fifo_data_enable
+ *                                parameter in header-less mode or
+ *                                frame header data in header mode
+ *  @param[in] dev      : structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void unpack_accel_frame(
+    struct bmi160_sensor_data* acc,
+    uint16_t* idx,
+    uint8_t* acc_idx,
+    uint8_t frame_info,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse the accelerometer data from the
+ *  FIFO data and store it in the instance of the structure bmi160_sensor_data.
+ *
+ * @param[in,out] accel_data        : structure instance of sensor data
+ * @param[in,out] data_start_index  : Index value of number of bytes parsed
+ * @param[in] dev           : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static void unpack_accel_data(
+    struct bmi160_sensor_data* accel_data,
+    uint16_t data_start_index,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse the accelerometer data from the
+ *  FIFO data in header mode.
+ *
+ *  @param[in,out] accel_data    : Structure instance of sensor data
+ *  @param[in,out] accel_length  : Number of accelerometer frames
+ *  @param[in] dev               : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void extract_accel_header_mode(
+    struct bmi160_sensor_data* accel_data,
+    uint8_t* accel_length,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API computes the number of bytes of gyro FIFO data
+ *  which is to be parsed in header-less mode
+ *
+ *  @param[out] data_index       : The start index for parsing data
+ *  @param[out] data_read_length : No of bytes to be parsed from FIFO buffer
+ *  @param[in] gyro_frame_count  : Number of Gyro data frames to be read
+ *  @param[in] dev               : Structure instance of bmi160_dev.
+ */
+static void get_gyro_len_to_parse(
+    uint16_t* data_index,
+    uint16_t* data_read_length,
+    const uint8_t* gyro_frame_count,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse the gyroscope's data from the
+ *  FIFO data in both header mode and header-less mode.
+ *  It updates the idx value which is used to store the index of
+ *  the current data byte which is parsed.
+ *
+ *  @param[in,out] gyro     : structure instance of sensor data
+ *  @param[in,out] idx      : Index value of number of bytes parsed
+ *  @param[in,out] gyro_idx : Index value of gyro data
+ *                                (x,y,z axes) frames parsed
+ *  @param[in] frame_info       : It consists of either fifo_data_enable
+ *                                parameter in header-less mode or
+ *                                frame header data in header mode
+ *  @param[in] dev      : structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void unpack_gyro_frame(
+    struct bmi160_sensor_data* gyro,
+    uint16_t* idx,
+    uint8_t* gyro_idx,
+    uint8_t frame_info,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse the gyro data from the
+ *  FIFO data and store it in the instance of the structure bmi160_sensor_data.
+ *
+ *  @param[in,out] gyro_data         : structure instance of sensor data
+ *  @param[in,out] data_start_index  : Index value of number of bytes parsed
+ *  @param[in] dev           : structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void unpack_gyro_data(
+    struct bmi160_sensor_data* gyro_data,
+    uint16_t data_start_index,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse the gyro data from the
+ *  FIFO data in header mode.
+ *
+ *  @param[in,out] gyro_data     : Structure instance of sensor data
+ *  @param[in,out] gyro_length   : Number of gyro frames
+ *  @param[in] dev               : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void extract_gyro_header_mode(
+    struct bmi160_sensor_data* gyro_data,
+    uint8_t* gyro_length,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API computes the number of bytes of aux FIFO data
+ *  which is to be parsed in header-less mode
+ *
+ *  @param[out] data_index       : The start index for parsing data
+ *  @param[out] data_read_length : No of bytes to be parsed from FIFO buffer
+ *  @param[in] aux_frame_count   : Number of Aux data frames to be read
+ *  @param[in] dev               : Structure instance of bmi160_dev.
+ */
+static void get_aux_len_to_parse(
+    uint16_t* data_index,
+    uint16_t* data_read_length,
+    const uint8_t* aux_frame_count,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse the aux's data from the
+ *  FIFO data in both header mode and header-less mode.
+ *  It updates the idx value which is used to store the index of
+ *  the current data byte which is parsed
+ *
+ *  @param[in,out] aux_data : structure instance of sensor data
+ *  @param[in,out] idx      : Index value of number of bytes parsed
+ *  @param[in,out] aux_index    : Index value of gyro data
+ *                                (x,y,z axes) frames parsed
+ *  @param[in] frame_info       : It consists of either fifo_data_enable
+ *                                parameter in header-less mode or
+ *                                frame header data in header mode
+ *  @param[in] dev      : structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void unpack_aux_frame(
+    struct bmi160_aux_data* aux_data,
+    uint16_t* idx,
+    uint8_t* aux_index,
+    uint8_t frame_info,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse the aux data from the
+ *  FIFO data and store it in the instance of the structure bmi160_aux_data.
+ *
+ * @param[in,out] aux_data      : structure instance of sensor data
+ * @param[in,out] data_start_index  : Index value of number of bytes parsed
+ * @param[in] dev           : structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval zero -> Success  / -ve value -> Error
+ */
+static void unpack_aux_data(
+    struct bmi160_aux_data* aux_data,
+    uint16_t data_start_index,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse the aux data from the
+ *  FIFO data in header mode.
+ *
+ *  @param[in,out] aux_data     : Structure instance of sensor data
+ *  @param[in,out] aux_length   : Number of aux frames
+ *  @param[in] dev              : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void extract_aux_header_mode(
+    struct bmi160_aux_data* aux_data,
+    uint8_t* aux_length,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API checks the presence of non-valid frames in the read fifo data.
+ *
+ *  @param[in,out] data_index    : The index of the current data to
+ *                                be parsed from fifo data
+ *  @param[in] dev               : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void check_frame_validity(uint16_t* data_index, const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to move the data index ahead of the
+ *  current_frame_length parameter when unnecessary FIFO data appears while
+ *  extracting the user specified data.
+ *
+ *  @param[in,out] data_index       : Index of the FIFO data which
+ *                                  is to be moved ahead of the
+ *                                  current_frame_length
+ *  @param[in] current_frame_length : Number of bytes in a particular frame
+ *  @param[in] dev                  : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void move_next_frame(
+    uint16_t* data_index,
+    uint8_t current_frame_length,
+    const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse and store the sensor time from the
+ *  FIFO data in the structure instance dev.
+ *
+ *  @param[in,out] data_index : Index of the FIFO data which
+ *                              has the sensor time.
+ *  @param[in] dev            : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void unpack_sensortime_frame(uint16_t* data_index, const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to parse and store the skipped_frame_count from
+ *  the FIFO data in the structure instance dev.
+ *
+ *  @param[in,out] data_index   : Index of the FIFO data which
+ *                                    has the skipped frame count.
+ *  @param[in] dev              : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static void unpack_skipped_frame(uint16_t* data_index, const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to get the FOC status from the sensor
+ *
+ *  @param[in,out] foc_status   : Result of FOC status.
+ *  @param[in] dev              : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t get_foc_status(uint8_t* foc_status, struct bmi160_dev const* dev);
+
+/*!
+ *  @brief This API is used to configure the offset enable bits in the sensor
+ *
+ *  @param[in,out] foc_conf   : Structure instance of bmi160_foc_conf which
+ *                                   has the FOC and offset configurations
+ *  @param[in] dev            : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    configure_offset_enable(const struct bmi160_foc_conf* foc_conf, struct bmi160_dev const* dev);
+
+/*!
+ *  @brief This API is used to trigger the FOC in the sensor
+ *
+ *  @param[in,out] offset     : Structure instance of bmi160_offsets which
+ *                              reads and stores the offset values after FOC
+ *  @param[in] dev            : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t trigger_foc(struct bmi160_offsets* offset, struct bmi160_dev const* dev);
+
+/*!
+ *  @brief This API is used to map/unmap the Dataready(Accel & Gyro), FIFO full
+ *  and FIFO watermark interrupt
+ *
+ *  @param[in] int_config     : Structure instance of bmi160_int_settg which
+ *                              stores the interrupt type and interrupt channel
+ *              configurations to map/unmap the interrupt pins
+ *  @param[in] dev            : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    map_hardware_interrupt(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*!
+ *  @brief This API is used to map/unmap the Any/Sig motion, Step det/Low-g,
+ *  Double tap, Single tap, Orientation, Flat, High-G, Nomotion interrupt pins.
+ *
+ *  @param[in] int_config     : Structure instance of bmi160_int_settg which
+ *                              stores the interrupt type and interrupt channel
+ *              configurations to map/unmap the interrupt pins
+ *  @param[in] dev            : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval zero -> Success  / -ve value -> Error
+ */
+static int8_t
+    map_feature_interrupt(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev);
+
+/*********************** User function definitions ****************************/
+
+/*!
+ * @brief This API reads the data from the given register address
+ * of sensor.
+ */
+int8_t
+    bmi160_get_regs(uint8_t reg_addr, uint8_t* data, uint16_t len, const struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+
+    /* Null-pointer check */
+    if((dev == NULL) || (dev->read == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else if(len == 0) {
+        rslt = BMI160_E_READ_WRITE_LENGTH_INVALID;
+    } else {
+        /* Configuring reg_addr for SPI Interface */
+        if(dev->intf == BMI160_SPI_INTF) {
+            reg_addr = (reg_addr | BMI160_SPI_RD_MASK);
+        }
+
+        rslt = dev->read(dev->id, reg_addr, data, len);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API writes the given data to the register address
+ * of sensor.
+ */
+int8_t
+    bmi160_set_regs(uint8_t reg_addr, uint8_t* data, uint16_t len, const struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+    uint8_t count = 0;
+
+    /* Null-pointer check */
+    if((dev == NULL) || (dev->write == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else if(len == 0) {
+        rslt = BMI160_E_READ_WRITE_LENGTH_INVALID;
+    } else {
+        /* Configuring reg_addr for SPI Interface */
+        if(dev->intf == BMI160_SPI_INTF) {
+            reg_addr = (reg_addr & BMI160_SPI_WR_MASK);
+        }
+
+        if((dev->prev_accel_cfg.power == BMI160_ACCEL_NORMAL_MODE) ||
+           (dev->prev_gyro_cfg.power == BMI160_GYRO_NORMAL_MODE)) {
+            rslt = dev->write(dev->id, reg_addr, data, len);
+
+            /* Kindly refer bmi160 data sheet section 3.2.4 */
+            dev->delay_ms(1);
+
+        } else {
+            /*Burst write is not allowed in
+             * suspend & low power mode */
+            for(; count < len; count++) {
+                rslt = dev->write(dev->id, reg_addr, &data[count], 1);
+                reg_addr++;
+
+                /* Kindly refer bmi160 data sheet section 3.2.4 */
+                dev->delay_ms(1);
+            }
+        }
+
+        if(rslt != BMI160_OK) {
+            rslt = BMI160_E_COM_FAIL;
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API is the entry point for sensor.It performs
+ *  the selection of I2C/SPI read mechanism according to the
+ *  selected interface and reads the chip-id of bmi160 sensor.
+ */
+int8_t bmi160_init(struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data;
+    uint8_t try = 3;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+
+    /* Dummy read of 0x7F register to enable SPI Interface
+     * if SPI is used */
+    if((rslt == BMI160_OK) && (dev->intf == BMI160_SPI_INTF)) {
+        rslt = bmi160_get_regs(BMI160_SPI_COMM_TEST_ADDR, &data, 1, dev);
+    }
+
+    if(rslt == BMI160_OK) {
+        /* Assign chip id as zero */
+        dev->chip_id = 0;
+
+        while((try--) && (dev->chip_id != BMI160_CHIP_ID)) {
+            /* Read chip_id */
+            rslt = bmi160_get_regs(BMI160_CHIP_ID_ADDR, &dev->chip_id, 1, dev);
+        }
+
+        if((rslt == BMI160_OK) && (dev->chip_id == BMI160_CHIP_ID)) {
+            dev->any_sig_sel = BMI160_BOTH_ANY_SIG_MOTION_DISABLED;
+
+            /* Soft reset */
+            rslt = bmi160_soft_reset(dev);
+        } else {
+            rslt = BMI160_E_DEV_NOT_FOUND;
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API resets and restarts the device.
+ * All register values are overwritten with default parameters.
+ */
+int8_t bmi160_soft_reset(struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = BMI160_SOFT_RESET_CMD;
+
+    /* Null-pointer check */
+    if((dev == NULL) || (dev->delay_ms == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Reset the device */
+        rslt = bmi160_set_regs(BMI160_COMMAND_REG_ADDR, &data, 1, dev);
+        dev->delay_ms(BMI160_SOFT_RESET_DELAY_MS);
+        if((rslt == BMI160_OK) && (dev->intf == BMI160_SPI_INTF)) {
+            /* Dummy read of 0x7F register to enable SPI Interface
+             * if SPI is used */
+            rslt = bmi160_get_regs(BMI160_SPI_COMM_TEST_ADDR, &data, 1, dev);
+        }
+
+        if(rslt == BMI160_OK) {
+            /* Update the default parameters */
+            default_param_settg(dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configures the power mode, range and bandwidth
+ * of sensor.
+ */
+int8_t bmi160_set_sens_conf(struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+
+    /* Null-pointer check */
+    if((dev == NULL) || (dev->delay_ms == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = set_accel_conf(dev);
+        if(rslt == BMI160_OK) {
+            rslt = set_gyro_conf(dev);
+            if(rslt == BMI160_OK) {
+                /* write power mode for accel and gyro */
+                rslt = bmi160_set_power_mode(dev);
+                if(rslt == BMI160_OK) {
+                    rslt = check_invalid_settg(dev);
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API gets accel and gyro configurations.
+ */
+int8_t bmi160_get_sens_conf(struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+
+    /* Null-pointer check */
+    if((dev == NULL) || (dev->delay_ms == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = get_accel_conf(dev);
+        if(rslt == BMI160_OK) {
+            rslt = get_gyro_conf(dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the power mode of the sensor.
+ */
+int8_t bmi160_set_power_mode(struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+
+    /* Null-pointer check */
+    if((dev == NULL) || (dev->delay_ms == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = set_accel_pwr(dev);
+        if(rslt == BMI160_OK) {
+            rslt = set_gyro_pwr(dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API gets the power mode of the sensor.
+ */
+int8_t bmi160_get_power_mode(struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t power_mode = 0;
+
+    /* Null-pointer check */
+    if((dev == NULL) || (dev->delay_ms == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = bmi160_get_regs(BMI160_PMU_STATUS_ADDR, &power_mode, 1, dev);
+        if(rslt == BMI160_OK) {
+            /* Power mode of the accel, gyro sensor is obtained */
+            dev->gyro_cfg.power = BMI160_GET_BITS(power_mode, BMI160_GYRO_POWER_MODE);
+            dev->accel_cfg.power = BMI160_GET_BITS(power_mode, BMI160_ACCEL_POWER_MODE);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API reads sensor data, stores it in
+ * the bmi160_sensor_data structure pointer passed by the user.
+ */
+int8_t bmi160_get_sensor_data(
+    uint8_t select_sensor,
+    struct bmi160_sensor_data* accel,
+    struct bmi160_sensor_data* gyro,
+    const struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+    uint8_t time_sel;
+    uint8_t sen_sel;
+    uint8_t len = 0;
+
+    /*Extract the sensor  and time select information*/
+    sen_sel = select_sensor & BMI160_SEN_SEL_MASK;
+    time_sel = ((sen_sel & BMI160_TIME_SEL) >> 2);
+    sen_sel = sen_sel & (BMI160_ACCEL_SEL | BMI160_GYRO_SEL);
+    if(time_sel == 1) {
+        len = 3;
+    }
+
+    /* Null-pointer check */
+    if(dev != NULL) {
+        switch(sen_sel) {
+        case BMI160_ACCEL_ONLY:
+
+            /* Null-pointer check */
+            if(accel == NULL) {
+                rslt = BMI160_E_NULL_PTR;
+            } else {
+                rslt = get_accel_data(len, accel, dev);
+            }
+
+            break;
+        case BMI160_GYRO_ONLY:
+
+            /* Null-pointer check */
+            if(gyro == NULL) {
+                rslt = BMI160_E_NULL_PTR;
+            } else {
+                rslt = get_gyro_data(len, gyro, dev);
+            }
+
+            break;
+        case BMI160_BOTH_ACCEL_AND_GYRO:
+
+            /* Null-pointer check */
+            if((gyro == NULL) || (accel == NULL)) {
+                rslt = BMI160_E_NULL_PTR;
+            } else {
+                rslt = get_accel_gyro_data(len, accel, gyro, dev);
+            }
+
+            break;
+        default:
+            rslt = BMI160_E_INVALID_INPUT;
+            break;
+        }
+    } else {
+        rslt = BMI160_E_NULL_PTR;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configures the necessary interrupt based on
+ *  the user settings in the bmi160_int_settg structure instance.
+ */
+int8_t bmi160_set_int_config(struct bmi160_int_settg* int_config, struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+
+    switch(int_config->int_type) {
+    case BMI160_ACC_ANY_MOTION_INT:
+
+        /*Any-motion  interrupt*/
+        rslt = set_accel_any_motion_int(int_config, dev);
+        break;
+    case BMI160_ACC_SIG_MOTION_INT:
+
+        /* Significant motion interrupt */
+        rslt = set_accel_sig_motion_int(int_config, dev);
+        break;
+    case BMI160_ACC_SLOW_NO_MOTION_INT:
+
+        /* Slow or no motion interrupt */
+        rslt = set_accel_no_motion_int(int_config, dev);
+        break;
+    case BMI160_ACC_DOUBLE_TAP_INT:
+    case BMI160_ACC_SINGLE_TAP_INT:
+
+        /* Double tap and single tap Interrupt */
+        rslt = set_accel_tap_int(int_config, dev);
+        break;
+    case BMI160_STEP_DETECT_INT:
+
+        /* Step detector interrupt */
+        rslt = set_accel_step_detect_int(int_config, dev);
+        break;
+    case BMI160_ACC_ORIENT_INT:
+
+        /* Orientation interrupt */
+        rslt = set_accel_orientation_int(int_config, dev);
+        break;
+    case BMI160_ACC_FLAT_INT:
+
+        /* Flat detection interrupt */
+        rslt = set_accel_flat_detect_int(int_config, dev);
+        break;
+    case BMI160_ACC_LOW_G_INT:
+
+        /* Low-g interrupt */
+        rslt = set_accel_low_g_int(int_config, dev);
+        break;
+    case BMI160_ACC_HIGH_G_INT:
+
+        /* High-g interrupt */
+        rslt = set_accel_high_g_int(int_config, dev);
+        break;
+    case BMI160_ACC_GYRO_DATA_RDY_INT:
+
+        /* Data ready interrupt */
+        rslt = set_accel_gyro_data_ready_int(int_config, dev);
+        break;
+    case BMI160_ACC_GYRO_FIFO_FULL_INT:
+
+        /* Fifo full interrupt */
+        rslt = set_fifo_full_int(int_config, dev);
+        break;
+    case BMI160_ACC_GYRO_FIFO_WATERMARK_INT:
+
+        /* Fifo water-mark interrupt */
+        rslt = set_fifo_watermark_int(int_config, dev);
+        break;
+    case BMI160_FIFO_TAG_INT_PIN:
+
+        /* Fifo tagging feature support */
+        /* Configure Interrupt pins */
+        rslt = set_intr_pin_config(int_config, dev);
+        break;
+    default:
+        break;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables or disable the step counter feature.
+ * 1 - enable step counter (0 - disable)
+ */
+int8_t bmi160_set_step_counter(uint8_t step_cnt_enable, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if(rslt != BMI160_OK) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = bmi160_get_regs(BMI160_INT_STEP_CONFIG_1_ADDR, &data, 1, dev);
+        if(rslt == BMI160_OK) {
+            if(step_cnt_enable == BMI160_ENABLE) {
+                data |= (uint8_t)(step_cnt_enable << 3);
+            } else {
+                data &= ~BMI160_STEP_COUNT_EN_BIT_MASK;
+            }
+
+            rslt = bmi160_set_regs(BMI160_INT_STEP_CONFIG_1_ADDR, &data, 1, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API reads the step counter value.
+ */
+int8_t bmi160_read_step_counter(uint16_t* step_val, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data[2] = {0, 0};
+    uint16_t msb = 0;
+    uint8_t lsb = 0;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if(rslt != BMI160_OK) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = bmi160_get_regs(BMI160_INT_STEP_CNT_0_ADDR, data, 2, dev);
+        if(rslt == BMI160_OK) {
+            lsb = data[0];
+            msb = data[1] << 8;
+            *step_val = msb | lsb;
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API reads the mention no of byte of data from the given
+ * register address of auxiliary sensor.
+ */
+int8_t bmi160_aux_read(
+    uint8_t reg_addr,
+    uint8_t* aux_data,
+    uint16_t len,
+    const struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+    uint16_t map_len = 0;
+
+    /* Null-pointer check */
+    if((dev == NULL) || (dev->read == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        if(dev->aux_cfg.aux_sensor_enable == BMI160_ENABLE) {
+            rslt = map_read_len(&map_len, dev);
+            if(rslt == BMI160_OK) {
+                rslt = extract_aux_read(map_len, reg_addr, aux_data, len, dev);
+            }
+        } else {
+            rslt = BMI160_E_INVALID_INPUT;
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API writes the mention no of byte of data to the given
+ * register address of auxiliary sensor.
+ */
+int8_t bmi160_aux_write(
+    uint8_t reg_addr,
+    uint8_t* aux_data,
+    uint16_t len,
+    const struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+    uint8_t count = 0;
+
+    /* Null-pointer check */
+    if((dev == NULL) || (dev->write == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        for(; count < len; count++) {
+            /* set data to write */
+            rslt = bmi160_set_regs(BMI160_AUX_IF_4_ADDR, aux_data, 1, dev);
+            dev->delay_ms(BMI160_AUX_COM_DELAY);
+            if(rslt == BMI160_OK) {
+                /* set address to write */
+                rslt = bmi160_set_regs(BMI160_AUX_IF_3_ADDR, &reg_addr, 1, dev);
+                dev->delay_ms(BMI160_AUX_COM_DELAY);
+                if(rslt == BMI160_OK && (count < len - 1)) {
+                    aux_data++;
+                    reg_addr++;
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API initialize the auxiliary sensor
+ * in order to access it.
+ */
+int8_t bmi160_aux_init(const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if(rslt != BMI160_OK) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        if(dev->aux_cfg.aux_sensor_enable == BMI160_ENABLE) {
+            /* Configures the auxiliary sensor interface settings */
+            rslt = config_aux_settg(dev);
+        } else {
+            rslt = BMI160_E_INVALID_INPUT;
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API is used to setup the auxiliary sensor of bmi160 in auto mode
+ * Thus enabling the auto update of 8 bytes of data from auxiliary sensor
+ * to BMI160 register address 0x04 to 0x0B
+ */
+int8_t bmi160_set_aux_auto_mode(uint8_t* data_addr, struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if(rslt != BMI160_OK) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        if(dev->aux_cfg.aux_sensor_enable == BMI160_ENABLE) {
+            /* Write the aux. address to read in 0x4D of BMI160*/
+            rslt = bmi160_set_regs(BMI160_AUX_IF_2_ADDR, data_addr, 1, dev);
+            dev->delay_ms(BMI160_AUX_COM_DELAY);
+            if(rslt == BMI160_OK) {
+                /* Configure the polling ODR for
+                 * auxiliary sensor */
+                rslt = config_aux_odr(dev);
+                if(rslt == BMI160_OK) {
+                    /* Disable the aux. manual mode, i.e aux.
+                     * sensor is in auto-mode (data-mode) */
+                    dev->aux_cfg.manual_enable = BMI160_DISABLE;
+                    rslt = bmi160_config_aux_mode(dev);
+
+                    /*  Auxiliary sensor data is obtained
+                     * in auto mode from this point */
+                }
+            }
+        } else {
+            rslt = BMI160_E_INVALID_INPUT;
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configures the 0x4C register and settings like
+ * Auxiliary sensor manual enable/ disable and aux burst read length.
+ */
+int8_t bmi160_config_aux_mode(const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t aux_if[2] = {(uint8_t)(dev->aux_cfg.aux_i2c_addr * 2), 0};
+
+    rslt = bmi160_get_regs(BMI160_AUX_IF_1_ADDR, &aux_if[1], 1, dev);
+    if(rslt == BMI160_OK) {
+        /* update the Auxiliary interface to manual/auto mode */
+        aux_if[1] = BMI160_SET_BITS(aux_if[1], BMI160_MANUAL_MODE_EN, dev->aux_cfg.manual_enable);
+
+        /* update the burst read length defined by user */
+        aux_if[1] =
+            BMI160_SET_BITS_POS_0(aux_if[1], BMI160_AUX_READ_BURST, dev->aux_cfg.aux_rd_burst_len);
+
+        /* Set the secondary interface address and manual mode
+         * along with burst read length */
+        rslt = bmi160_set_regs(BMI160_AUX_IF_0_ADDR, &aux_if[0], 2, dev);
+        dev->delay_ms(BMI160_AUX_COM_DELAY);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API is used to read the raw uncompensated auxiliary sensor
+ * data of 8 bytes from BMI160 register address 0x04 to 0x0B
+ */
+int8_t bmi160_read_aux_data_auto_mode(uint8_t* aux_data, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if(rslt != BMI160_OK) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        if((dev->aux_cfg.aux_sensor_enable == BMI160_ENABLE) &&
+           (dev->aux_cfg.manual_enable == BMI160_DISABLE)) {
+            /* Read the aux. sensor's raw data */
+            rslt = bmi160_get_regs(BMI160_AUX_DATA_ADDR, aux_data, 8, dev);
+        } else {
+            rslt = BMI160_E_INVALID_INPUT;
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This is used to perform self test of accel/gyro of the BMI160 sensor
+ */
+int8_t bmi160_perform_self_test(uint8_t select_sensor, struct bmi160_dev* dev) {
+    int8_t rslt;
+    int8_t self_test_rslt = 0;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if(rslt != BMI160_OK) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Proceed if null check is fine */
+        switch(select_sensor) {
+        case BMI160_ACCEL_ONLY:
+            rslt = perform_accel_self_test(dev);
+            break;
+        case BMI160_GYRO_ONLY:
+
+            /* Set the power mode as normal mode */
+            dev->gyro_cfg.power = BMI160_GYRO_NORMAL_MODE;
+            rslt = bmi160_set_power_mode(dev);
+
+            /* Perform gyro self test */
+            if(rslt == BMI160_OK) {
+                /* Perform gyro self test */
+                rslt = perform_gyro_self_test(dev);
+            }
+
+            break;
+        default:
+            rslt = BMI160_E_INVALID_INPUT;
+            break;
+        }
+
+        /* Check to ensure bus error does not occur */
+        if(rslt >= BMI160_OK) {
+            /* Store the status of self test result */
+            self_test_rslt = rslt;
+
+            /* Perform soft reset */
+            rslt = bmi160_soft_reset(dev);
+        }
+
+        /* Check to ensure bus operations are success */
+        if(rslt == BMI160_OK) {
+            /* Restore self_test_rslt as return value */
+            rslt = self_test_rslt;
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API reads the data from fifo buffer.
+ */
+int8_t bmi160_get_fifo_data(struct bmi160_dev const* dev) {
+    int8_t rslt = 0;
+    uint16_t bytes_to_read = 0;
+    uint16_t user_fifo_len = 0;
+
+    /* check the bmi160 structure as NULL*/
+    if((dev == NULL) || (dev->fifo->data == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        reset_fifo_data_structure(dev);
+
+        /* get current FIFO fill-level*/
+        rslt = get_fifo_byte_counter(&bytes_to_read, dev);
+        if(rslt == BMI160_OK) {
+            user_fifo_len = dev->fifo->length;
+            if((dev->fifo->length > bytes_to_read)) {
+                /* Handling the case where user requests
+                 * more data than available in FIFO */
+                dev->fifo->length = bytes_to_read;
+            }
+
+            if((dev->fifo->fifo_time_enable == BMI160_FIFO_TIME_ENABLE) &&
+               (bytes_to_read + BMI160_FIFO_BYTES_OVERREAD <= user_fifo_len)) {
+                /* Handling case of sensor time availability*/
+                dev->fifo->length = dev->fifo->length + BMI160_FIFO_BYTES_OVERREAD;
+            }
+
+            /* read only the filled bytes in the FIFO Buffer */
+            rslt = bmi160_get_regs(BMI160_FIFO_DATA_ADDR, dev->fifo->data, dev->fifo->length, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API writes fifo_flush command to command register.This
+ *  action clears all data in the Fifo without changing fifo configuration
+ *  settings
+ */
+int8_t bmi160_set_fifo_flush(const struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t data = BMI160_FIFO_FLUSH_VALUE;
+    uint8_t reg_addr = BMI160_COMMAND_REG_ADDR;
+
+    /* Check the bmi160_dev structure for NULL address*/
+    if(dev == NULL) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = bmi160_set_regs(reg_addr, &data, BMI160_ONE, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the FIFO configuration in the sensor.
+ */
+int8_t bmi160_set_fifo_config(uint8_t config, uint8_t enable, struct bmi160_dev const* dev) {
+    int8_t rslt = 0;
+    uint8_t data = 0;
+    uint8_t reg_addr = BMI160_FIFO_CONFIG_1_ADDR;
+    uint8_t fifo_config = config & BMI160_FIFO_CONFIG_1_MASK;
+
+    /* Check the bmi160_dev structure for NULL address*/
+    if(dev == NULL) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = bmi160_get_regs(reg_addr, &data, BMI160_ONE, dev);
+        if(rslt == BMI160_OK) {
+            if(fifo_config > 0) {
+                if(enable == BMI160_ENABLE) {
+                    data = data | fifo_config;
+                } else {
+                    data = data & (~fifo_config);
+                }
+            }
+
+            /* write fifo frame content configuration*/
+            rslt = bmi160_set_regs(reg_addr, &data, BMI160_ONE, dev);
+            if(rslt == BMI160_OK) {
+                /* read fifo frame content configuration*/
+                rslt = bmi160_get_regs(reg_addr, &data, BMI160_ONE, dev);
+                if(rslt == BMI160_OK) {
+                    /* extract fifo header enabled status */
+                    dev->fifo->fifo_header_enable = data & BMI160_FIFO_HEAD_ENABLE;
+
+                    /* extract accel/gyr/aux. data enabled status */
+                    dev->fifo->fifo_data_enable = data & BMI160_FIFO_M_G_A_ENABLE;
+
+                    /* extract fifo sensor time enabled status */
+                    dev->fifo->fifo_time_enable = data & BMI160_FIFO_TIME_ENABLE;
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*! @brief This API is used to configure the down sampling ratios of
+ *  the accel and gyro data for FIFO.Also, it configures filtered or
+ *  pre-filtered data for accel and gyro.
+ *
+ */
+int8_t bmi160_set_fifo_down(uint8_t fifo_down, const struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t data = 0;
+    uint8_t reg_addr = BMI160_FIFO_DOWN_ADDR;
+
+    /* Check the bmi160_dev structure for NULL address*/
+    if(dev == NULL) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = bmi160_get_regs(reg_addr, &data, BMI160_ONE, dev);
+        if(rslt == BMI160_OK) {
+            data = data | fifo_down;
+            rslt = bmi160_set_regs(reg_addr, &data, BMI160_ONE, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API sets the FIFO watermark level in the sensor.
+ *
+ */
+int8_t bmi160_set_fifo_wm(uint8_t fifo_wm, const struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t data = fifo_wm;
+    uint8_t reg_addr = BMI160_FIFO_CONFIG_0_ADDR;
+
+    /* Check the bmi160_dev structure for NULL address*/
+    if(dev == NULL) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = bmi160_set_regs(reg_addr, &data, BMI160_ONE, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API parses and extracts the accelerometer frames from
+ *  FIFO data read by the "bmi160_get_fifo_data" API and stores it in
+ *  the "accel_data" structure instance.
+ */
+int8_t bmi160_extract_accel(
+    struct bmi160_sensor_data* accel_data,
+    uint8_t* accel_length,
+    struct bmi160_dev const* dev) {
+    int8_t rslt = 0;
+    uint16_t data_index = 0;
+    uint16_t data_read_length = 0;
+    uint8_t accel_index = 0;
+    uint8_t fifo_data_enable = 0;
+
+    if(dev == NULL || dev->fifo == NULL || dev->fifo->data == NULL) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Parsing the FIFO data in header-less mode */
+        if(dev->fifo->fifo_header_enable == 0) {
+            /* Number of bytes to be parsed from FIFO */
+            get_accel_len_to_parse(&data_index, &data_read_length, accel_length, dev);
+            for(; data_index < data_read_length;) {
+                /*Check for the availability of next two bytes of FIFO data */
+                check_frame_validity(&data_index, dev);
+                fifo_data_enable = dev->fifo->fifo_data_enable;
+                unpack_accel_frame(accel_data, &data_index, &accel_index, fifo_data_enable, dev);
+            }
+
+            /* update number of accel data read*/
+            *accel_length = accel_index;
+
+            /*update the accel byte index*/
+            dev->fifo->accel_byte_start_idx = data_index;
+        } else {
+            /* Parsing the FIFO data in header mode */
+            extract_accel_header_mode(accel_data, accel_length, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API parses and extracts the gyro frames from
+ *  FIFO data read by the "bmi160_get_fifo_data" API and stores it in
+ *  the "gyro_data" structure instance.
+ */
+int8_t bmi160_extract_gyro(
+    struct bmi160_sensor_data* gyro_data,
+    uint8_t* gyro_length,
+    struct bmi160_dev const* dev) {
+    int8_t rslt = 0;
+    uint16_t data_index = 0;
+    uint16_t data_read_length = 0;
+    uint8_t gyro_index = 0;
+    uint8_t fifo_data_enable = 0;
+
+    if(dev == NULL || dev->fifo->data == NULL) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Parsing the FIFO data in header-less mode */
+        if(dev->fifo->fifo_header_enable == 0) {
+            /* Number of bytes to be parsed from FIFO */
+            get_gyro_len_to_parse(&data_index, &data_read_length, gyro_length, dev);
+            for(; data_index < data_read_length;) {
+                /*Check for the availability of next two bytes of FIFO data */
+                check_frame_validity(&data_index, dev);
+                fifo_data_enable = dev->fifo->fifo_data_enable;
+                unpack_gyro_frame(gyro_data, &data_index, &gyro_index, fifo_data_enable, dev);
+            }
+
+            /* update number of gyro data read */
+            *gyro_length = gyro_index;
+
+            /* update the gyro byte index */
+            dev->fifo->gyro_byte_start_idx = data_index;
+        } else {
+            /* Parsing the FIFO data in header mode */
+            extract_gyro_header_mode(gyro_data, gyro_length, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API parses and extracts the aux frames from
+ *  FIFO data read by the "bmi160_get_fifo_data" API and stores it in
+ *  the "aux_data" structure instance.
+ */
+int8_t bmi160_extract_aux(
+    struct bmi160_aux_data* aux_data,
+    uint8_t* aux_len,
+    struct bmi160_dev const* dev) {
+    int8_t rslt = 0;
+    uint16_t data_index = 0;
+    uint16_t data_read_length = 0;
+    uint8_t aux_index = 0;
+    uint8_t fifo_data_enable = 0;
+
+    if((dev == NULL) || (dev->fifo->data == NULL) || (aux_data == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Parsing the FIFO data in header-less mode */
+        if(dev->fifo->fifo_header_enable == 0) {
+            /* Number of bytes to be parsed from FIFO */
+            get_aux_len_to_parse(&data_index, &data_read_length, aux_len, dev);
+            for(; data_index < data_read_length;) {
+                /* Check for the availability of next two
+                 * bytes of FIFO data */
+                check_frame_validity(&data_index, dev);
+                fifo_data_enable = dev->fifo->fifo_data_enable;
+                unpack_aux_frame(aux_data, &data_index, &aux_index, fifo_data_enable, dev);
+            }
+
+            /* update number of aux data read */
+            *aux_len = aux_index;
+
+            /* update the aux byte index */
+            dev->fifo->aux_byte_start_idx = data_index;
+        } else {
+            /* Parsing the FIFO data in header mode */
+            extract_aux_header_mode(aux_data, aux_len, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API starts the FOC of accel and gyro
+ *
+ *  @note FOC should not be used in low-power mode of sensor
+ *
+ *  @note Accel FOC targets values of +1g , 0g , -1g
+ *  Gyro FOC always targets value of 0 dps
+ */
+int8_t bmi160_start_foc(
+    const struct bmi160_foc_conf* foc_conf,
+    struct bmi160_offsets* offset,
+    struct bmi160_dev const* dev) {
+    int8_t rslt;
+    uint8_t data;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if(rslt != BMI160_OK) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Set the offset enable bits */
+        rslt = configure_offset_enable(foc_conf, dev);
+        if(rslt == BMI160_OK) {
+            /* Read the FOC config from the sensor */
+            rslt = bmi160_get_regs(BMI160_FOC_CONF_ADDR, &data, 1, dev);
+
+            /* Set the FOC config for gyro */
+            data = BMI160_SET_BITS(data, BMI160_GYRO_FOC_EN, foc_conf->foc_gyr_en);
+
+            /* Set the FOC config for accel xyz axes */
+            data = BMI160_SET_BITS(data, BMI160_ACCEL_FOC_X_CONF, foc_conf->foc_acc_x);
+            data = BMI160_SET_BITS(data, BMI160_ACCEL_FOC_Y_CONF, foc_conf->foc_acc_y);
+            data = BMI160_SET_BITS_POS_0(data, BMI160_ACCEL_FOC_Z_CONF, foc_conf->foc_acc_z);
+            if(rslt == BMI160_OK) {
+                /* Set the FOC config in the sensor */
+                rslt = bmi160_set_regs(BMI160_FOC_CONF_ADDR, &data, 1, dev);
+                if(rslt == BMI160_OK) {
+                    /* Procedure to trigger
+                     * FOC and check status */
+                    rslt = trigger_foc(offset, dev);
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API reads and stores the offset values of accel and gyro
+ */
+int8_t bmi160_get_offsets(struct bmi160_offsets* offset, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data[7];
+    uint8_t lsb, msb;
+    int16_t offset_msb, offset_lsb;
+    int16_t offset_data;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if(rslt != BMI160_OK) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Read the FOC config from the sensor */
+        rslt = bmi160_get_regs(BMI160_OFFSET_ADDR, data, 7, dev);
+
+        /* Accel offsets */
+        offset->off_acc_x = (int8_t)data[0];
+        offset->off_acc_y = (int8_t)data[1];
+        offset->off_acc_z = (int8_t)data[2];
+
+        /* Gyro x-axis offset */
+        lsb = data[3];
+        msb = BMI160_GET_BITS_POS_0(data[6], BMI160_GYRO_OFFSET_X);
+        offset_msb = (int16_t)(msb << 14);
+        offset_lsb = lsb << 6;
+        offset_data = offset_msb | offset_lsb;
+
+        /* Divide by 64 to get the Right shift by 6 value */
+        offset->off_gyro_x = (int16_t)(offset_data / 64);
+
+        /* Gyro y-axis offset */
+        lsb = data[4];
+        msb = BMI160_GET_BITS(data[6], BMI160_GYRO_OFFSET_Y);
+        offset_msb = (int16_t)(msb << 14);
+        offset_lsb = lsb << 6;
+        offset_data = offset_msb | offset_lsb;
+
+        /* Divide by 64 to get the Right shift by 6 value */
+        offset->off_gyro_y = (int16_t)(offset_data / 64);
+
+        /* Gyro z-axis offset */
+        lsb = data[5];
+        msb = BMI160_GET_BITS(data[6], BMI160_GYRO_OFFSET_Z);
+        offset_msb = (int16_t)(msb << 14);
+        offset_lsb = lsb << 6;
+        offset_data = offset_msb | offset_lsb;
+
+        /* Divide by 64 to get the Right shift by 6 value */
+        offset->off_gyro_z = (int16_t)(offset_data / 64);
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API writes the offset values of accel and gyro to
+ *  the sensor but these values will be reset on POR or soft reset.
+ */
+int8_t bmi160_set_offsets(
+    const struct bmi160_foc_conf* foc_conf,
+    const struct bmi160_offsets* offset,
+    struct bmi160_dev const* dev) {
+    int8_t rslt;
+    uint8_t data[7];
+    uint8_t x_msb, y_msb, z_msb;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if(rslt != BMI160_OK) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Update the accel offset */
+        data[0] = (uint8_t)offset->off_acc_x;
+        data[1] = (uint8_t)offset->off_acc_y;
+        data[2] = (uint8_t)offset->off_acc_z;
+
+        /* Update the LSB of gyro offset */
+        data[3] = BMI160_GET_LSB(offset->off_gyro_x);
+        data[4] = BMI160_GET_LSB(offset->off_gyro_y);
+        data[5] = BMI160_GET_LSB(offset->off_gyro_z);
+
+        /* Update the MSB of gyro offset */
+        x_msb = BMI160_GET_BITS(offset->off_gyro_x, BMI160_GYRO_OFFSET);
+        y_msb = BMI160_GET_BITS(offset->off_gyro_y, BMI160_GYRO_OFFSET);
+        z_msb = BMI160_GET_BITS(offset->off_gyro_z, BMI160_GYRO_OFFSET);
+        data[6] = (uint8_t)(z_msb << 4 | y_msb << 2 | x_msb);
+
+        /* Set the offset enable/disable for gyro and accel */
+        data[6] = BMI160_SET_BITS(data[6], BMI160_GYRO_OFFSET_EN, foc_conf->gyro_off_en);
+        data[6] = BMI160_SET_BITS(data[6], BMI160_ACCEL_OFFSET_EN, foc_conf->acc_off_en);
+
+        /* Set the offset config and values in the sensor */
+        rslt = bmi160_set_regs(BMI160_OFFSET_ADDR, data, 7, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API writes the image registers values to NVM which is
+ *  stored even after POR or soft reset
+ */
+int8_t bmi160_update_nvm(struct bmi160_dev const* dev) {
+    int8_t rslt;
+    uint8_t data;
+    uint8_t cmd = BMI160_NVM_BACKUP_EN;
+
+    /* Read the nvm_prog_en configuration */
+    rslt = bmi160_get_regs(BMI160_CONF_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        data = BMI160_SET_BITS(data, BMI160_NVM_UPDATE, 1);
+
+        /* Set the nvm_prog_en bit in the sensor */
+        rslt = bmi160_set_regs(BMI160_CONF_ADDR, &data, 1, dev);
+        if(rslt == BMI160_OK) {
+            /* Update NVM */
+            rslt = bmi160_set_regs(BMI160_COMMAND_REG_ADDR, &cmd, 1, dev);
+            if(rslt == BMI160_OK) {
+                /* Check for NVM ready status */
+                rslt = bmi160_get_regs(BMI160_STATUS_ADDR, &data, 1, dev);
+                if(rslt == BMI160_OK) {
+                    data = BMI160_GET_BITS(data, BMI160_NVM_STATUS);
+                    if(data != BMI160_ENABLE) {
+                        /* Delay to update NVM */
+                        dev->delay_ms(25);
+                    }
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API gets the interrupt status from the sensor.
+ */
+int8_t bmi160_get_int_status(
+    enum bmi160_int_status_sel int_status_sel,
+    union bmi160_int_status* int_status,
+    struct bmi160_dev const* dev) {
+    int8_t rslt = 0;
+
+    /* To get the status of all interrupts */
+    if(int_status_sel == BMI160_INT_STATUS_ALL) {
+        rslt = bmi160_get_regs(BMI160_INT_STATUS_ADDR, &int_status->data[0], 4, dev);
+    } else {
+        if(int_status_sel & BMI160_INT_STATUS_0) {
+            rslt = bmi160_get_regs(BMI160_INT_STATUS_ADDR, &int_status->data[0], 1, dev);
+        }
+
+        if(int_status_sel & BMI160_INT_STATUS_1) {
+            rslt = bmi160_get_regs(BMI160_INT_STATUS_ADDR + 1, &int_status->data[1], 1, dev);
+        }
+
+        if(int_status_sel & BMI160_INT_STATUS_2) {
+            rslt = bmi160_get_regs(BMI160_INT_STATUS_ADDR + 2, &int_status->data[2], 1, dev);
+        }
+
+        if(int_status_sel & BMI160_INT_STATUS_3) {
+            rslt = bmi160_get_regs(BMI160_INT_STATUS_ADDR + 3, &int_status->data[3], 1, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*********************** Local function definitions ***************************/
+
+/*!
+ * @brief This API sets the any-motion interrupt of the sensor.
+ * This interrupt occurs when accel values exceeds preset threshold
+ * for a certain period of time.
+ */
+static int8_t
+    set_accel_any_motion_int(struct bmi160_int_settg* int_config, struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if((rslt != BMI160_OK) || (int_config == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* updating the interrupt structure to local structure */
+        struct bmi160_acc_any_mot_int_cfg* any_motion_int_cfg =
+            &(int_config->int_type_cfg.acc_any_motion_int);
+        rslt = enable_accel_any_motion_int(any_motion_int_cfg, dev);
+        if(rslt == BMI160_OK) {
+            rslt = config_any_motion_int_settg(int_config, any_motion_int_cfg, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets tap interrupts.Interrupt is fired when
+ * tap movements happen.
+ */
+static int8_t
+    set_accel_tap_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if((rslt != BMI160_OK) || (int_config == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* updating the interrupt structure to local structure */
+        struct bmi160_acc_tap_int_cfg* tap_int_cfg = &(int_config->int_type_cfg.acc_tap_int);
+        rslt = enable_tap_int(int_config, tap_int_cfg, dev);
+        if(rslt == BMI160_OK) {
+            /* Configure Interrupt pins */
+            rslt = set_intr_pin_config(int_config, dev);
+            if(rslt == BMI160_OK) {
+                rslt = config_tap_int_settg(int_config, tap_int_cfg, dev);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the data ready interrupt for both accel and gyro.
+ * This interrupt occurs when new accel and gyro data comes.
+ */
+static int8_t set_accel_gyro_data_ready_int(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if((rslt != BMI160_OK) || (int_config == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        rslt = enable_data_ready_int(dev);
+        if(rslt == BMI160_OK) {
+            /* Configure Interrupt pins */
+            rslt = set_intr_pin_config(int_config, dev);
+            if(rslt == BMI160_OK) {
+                rslt = map_hardware_interrupt(int_config, dev);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the significant motion interrupt of the sensor.This
+ * interrupt occurs when there is change in user location.
+ */
+static int8_t
+    set_accel_sig_motion_int(struct bmi160_int_settg* int_config, struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if((rslt != BMI160_OK) || (int_config == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* updating the interrupt structure to local structure */
+        struct bmi160_acc_sig_mot_int_cfg* sig_mot_int_cfg =
+            &(int_config->int_type_cfg.acc_sig_motion_int);
+        rslt = enable_sig_motion_int(sig_mot_int_cfg, dev);
+        if(rslt == BMI160_OK) {
+            rslt = config_sig_motion_int_settg(int_config, sig_mot_int_cfg, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the no motion/slow motion interrupt of the sensor.
+ * Slow motion is similar to any motion interrupt.No motion interrupt
+ * occurs when slope bet. two accel values falls below preset threshold
+ * for preset duration.
+ */
+static int8_t
+    set_accel_no_motion_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if((rslt != BMI160_OK) || (int_config == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* updating the interrupt structure to local structure */
+        struct bmi160_acc_no_motion_int_cfg* no_mot_int_cfg =
+            &(int_config->int_type_cfg.acc_no_motion_int);
+        rslt = enable_no_motion_int(no_mot_int_cfg, dev);
+        if(rslt == BMI160_OK) {
+            /* Configure the INT PIN settings*/
+            rslt = config_no_motion_int_settg(int_config, no_mot_int_cfg, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the step detection interrupt.This interrupt
+ * occurs when the single step causes accel values to go above
+ * preset threshold.
+ */
+static int8_t
+    set_accel_step_detect_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if((rslt != BMI160_OK) || (int_config == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* updating the interrupt structure to local structure */
+        struct bmi160_acc_step_detect_int_cfg* step_detect_int_cfg =
+            &(int_config->int_type_cfg.acc_step_detect_int);
+        rslt = enable_step_detect_int(step_detect_int_cfg, dev);
+        if(rslt == BMI160_OK) {
+            /* Configure Interrupt pins */
+            rslt = set_intr_pin_config(int_config, dev);
+            if(rslt == BMI160_OK) {
+                rslt = map_feature_interrupt(int_config, dev);
+                if(rslt == BMI160_OK) {
+                    rslt = config_step_detect(step_detect_int_cfg, dev);
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the orientation interrupt of the sensor.This
+ * interrupt occurs when there is orientation change in the sensor
+ * with respect to gravitational field vector g.
+ */
+static int8_t
+    set_accel_orientation_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if((rslt != BMI160_OK) || (int_config == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* updating the interrupt structure to local structure */
+        struct bmi160_acc_orient_int_cfg* orient_int_cfg =
+            &(int_config->int_type_cfg.acc_orient_int);
+        rslt = enable_orient_int(orient_int_cfg, dev);
+        if(rslt == BMI160_OK) {
+            /* Configure Interrupt pins */
+            rslt = set_intr_pin_config(int_config, dev);
+            if(rslt == BMI160_OK) {
+                /* map INT pin to orient interrupt */
+                rslt = map_feature_interrupt(int_config, dev);
+                if(rslt == BMI160_OK) {
+                    /* configure the
+                     * orientation setting*/
+                    rslt = config_orient_int_settg(orient_int_cfg, dev);
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the flat interrupt of the sensor.This interrupt
+ * occurs in case of flat orientation
+ */
+static int8_t
+    set_accel_flat_detect_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if((rslt != BMI160_OK) || (int_config == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* updating the interrupt structure to local structure */
+        struct bmi160_acc_flat_detect_int_cfg* flat_detect_int =
+            &(int_config->int_type_cfg.acc_flat_int);
+
+        /* enable the flat interrupt */
+        rslt = enable_flat_int(flat_detect_int, dev);
+        if(rslt == BMI160_OK) {
+            /* Configure Interrupt pins */
+            rslt = set_intr_pin_config(int_config, dev);
+            if(rslt == BMI160_OK) {
+                /* map INT pin to flat interrupt */
+                rslt = map_feature_interrupt(int_config, dev);
+                if(rslt == BMI160_OK) {
+                    /* configure the flat setting*/
+                    rslt = config_flat_int_settg(flat_detect_int, dev);
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the low-g interrupt of the sensor.This interrupt
+ * occurs during free-fall.
+ */
+static int8_t
+    set_accel_low_g_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if((rslt != BMI160_OK) || (int_config == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* updating the interrupt structure to local structure */
+        struct bmi160_acc_low_g_int_cfg* low_g_int = &(int_config->int_type_cfg.acc_low_g_int);
+
+        /* Enable the low-g interrupt*/
+        rslt = enable_low_g_int(low_g_int, dev);
+        if(rslt == BMI160_OK) {
+            /* Configure Interrupt pins */
+            rslt = set_intr_pin_config(int_config, dev);
+            if(rslt == BMI160_OK) {
+                /* Map INT pin to low-g interrupt */
+                rslt = map_feature_interrupt(int_config, dev);
+                if(rslt == BMI160_OK) {
+                    /* configure the data source
+                     * for low-g interrupt*/
+                    rslt = config_low_g_data_src(low_g_int, dev);
+                    if(rslt == BMI160_OK) {
+                        rslt = config_low_g_int_settg(low_g_int, dev);
+                    }
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the high-g interrupt of the sensor.The interrupt
+ * occurs if the absolute value of acceleration data of any enabled axis
+ * exceeds the programmed threshold and the sign of the value does not
+ * change for a preset duration.
+ */
+static int8_t
+    set_accel_high_g_int(struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if((rslt != BMI160_OK) || (int_config == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* updating the interrupt structure to local structure */
+        struct bmi160_acc_high_g_int_cfg* high_g_int_cfg =
+            &(int_config->int_type_cfg.acc_high_g_int);
+
+        /* Enable the high-g interrupt */
+        rslt = enable_high_g_int(high_g_int_cfg, dev);
+        if(rslt == BMI160_OK) {
+            /* Configure Interrupt pins */
+            rslt = set_intr_pin_config(int_config, dev);
+            if(rslt == BMI160_OK) {
+                /* Map INT pin to high-g interrupt */
+                rslt = map_feature_interrupt(int_config, dev);
+                if(rslt == BMI160_OK) {
+                    /* configure the data source
+                     * for high-g interrupt*/
+                    rslt = config_high_g_data_src(high_g_int_cfg, dev);
+                    if(rslt == BMI160_OK) {
+                        rslt = config_high_g_int_settg(high_g_int_cfg, dev);
+                    }
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configures the pins to fire the
+ * interrupt signal when it occurs.
+ */
+static int8_t
+    set_intr_pin_config(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* configure the behavioural settings of interrupt pin */
+    rslt = config_int_out_ctrl(int_config, dev);
+    if(rslt == BMI160_OK) {
+        rslt = config_int_latch(int_config, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This internal API is used to validate the device structure pointer for
+ * null conditions.
+ */
+static int8_t null_ptr_check(const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    if((dev == NULL) || (dev->read == NULL) || (dev->write == NULL) || (dev->delay_ms == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Device structure is fine */
+        rslt = BMI160_OK;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the default configuration parameters of accel & gyro.
+ * Also maintain the previous state of configurations.
+ */
+static void default_param_settg(struct bmi160_dev* dev) {
+    /* Initializing accel and gyro params with
+     * default values */
+    dev->accel_cfg.bw = BMI160_ACCEL_BW_NORMAL_AVG4;
+    dev->accel_cfg.odr = BMI160_ACCEL_ODR_100HZ;
+    dev->accel_cfg.power = BMI160_ACCEL_SUSPEND_MODE;
+    dev->accel_cfg.range = BMI160_ACCEL_RANGE_2G;
+    dev->gyro_cfg.bw = BMI160_GYRO_BW_NORMAL_MODE;
+    dev->gyro_cfg.odr = BMI160_GYRO_ODR_100HZ;
+    dev->gyro_cfg.power = BMI160_GYRO_SUSPEND_MODE;
+    dev->gyro_cfg.range = BMI160_GYRO_RANGE_2000_DPS;
+
+    /* To maintain the previous state of accel configuration */
+    dev->prev_accel_cfg = dev->accel_cfg;
+
+    /* To maintain the previous state of gyro configuration */
+    dev->prev_gyro_cfg = dev->gyro_cfg;
+}
+
+/*!
+ * @brief This API set the accel configuration.
+ */
+static int8_t set_accel_conf(struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data[2] = {0};
+
+    rslt = check_accel_config(data, dev);
+    if(rslt == BMI160_OK) {
+        /* Write output data rate and bandwidth */
+        rslt = bmi160_set_regs(BMI160_ACCEL_CONFIG_ADDR, &data[0], 1, dev);
+        if(rslt == BMI160_OK) {
+            dev->prev_accel_cfg.odr = dev->accel_cfg.odr;
+            dev->prev_accel_cfg.bw = dev->accel_cfg.bw;
+
+            /* write accel range */
+            rslt = bmi160_set_regs(BMI160_ACCEL_RANGE_ADDR, &data[1], 1, dev);
+            if(rslt == BMI160_OK) {
+                dev->prev_accel_cfg.range = dev->accel_cfg.range;
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API gets the accel configuration.
+ */
+static int8_t get_accel_conf(struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data[2] = {0};
+
+    /* Get accel configurations */
+    rslt = bmi160_get_regs(BMI160_ACCEL_CONFIG_ADDR, data, 2, dev);
+    if(rslt == BMI160_OK) {
+        dev->accel_cfg.odr = (data[0] & BMI160_ACCEL_ODR_MASK);
+        dev->accel_cfg.bw = (data[0] & BMI160_ACCEL_BW_MASK) >> BMI160_ACCEL_BW_POS;
+        dev->accel_cfg.range = (data[1] & BMI160_ACCEL_RANGE_MASK);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API check the accel configuration.
+ */
+static int8_t check_accel_config(uint8_t* data, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* read accel Output data rate and bandwidth */
+    rslt = bmi160_get_regs(BMI160_ACCEL_CONFIG_ADDR, data, 2, dev);
+    if(rslt == BMI160_OK) {
+        rslt = process_accel_odr(&data[0], dev);
+        if(rslt == BMI160_OK) {
+            rslt = process_accel_bw(&data[0], dev);
+            if(rslt == BMI160_OK) {
+                rslt = process_accel_range(&data[1], dev);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API process the accel odr.
+ */
+static int8_t process_accel_odr(uint8_t* data, const struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t temp = 0;
+    uint8_t odr = 0;
+
+    if(dev->accel_cfg.odr <= BMI160_ACCEL_ODR_1600HZ) {
+        if(dev->accel_cfg.odr != dev->prev_accel_cfg.odr) {
+            odr = (uint8_t)dev->accel_cfg.odr;
+            temp = *data & ~BMI160_ACCEL_ODR_MASK;
+
+            /* Adding output data rate */
+            *data = temp | (odr & BMI160_ACCEL_ODR_MASK);
+        }
+    } else {
+        rslt = BMI160_E_OUT_OF_RANGE;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API process the accel bandwidth.
+ */
+static int8_t process_accel_bw(uint8_t* data, const struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t temp = 0;
+    uint8_t bw = 0;
+
+    if(dev->accel_cfg.bw <= BMI160_ACCEL_BW_RES_AVG128) {
+        if(dev->accel_cfg.bw != dev->prev_accel_cfg.bw) {
+            bw = (uint8_t)dev->accel_cfg.bw;
+            temp = *data & ~BMI160_ACCEL_BW_MASK;
+
+            /* Adding bandwidth */
+            *data = temp | ((bw << 4) & BMI160_ACCEL_BW_MASK);
+        }
+    } else {
+        rslt = BMI160_E_OUT_OF_RANGE;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API process the accel range.
+ */
+static int8_t process_accel_range(uint8_t* data, const struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t temp = 0;
+    uint8_t range = 0;
+
+    if(dev->accel_cfg.range <= BMI160_ACCEL_RANGE_16G) {
+        if(dev->accel_cfg.range != dev->prev_accel_cfg.range) {
+            range = (uint8_t)dev->accel_cfg.range;
+            temp = *data & ~BMI160_ACCEL_RANGE_MASK;
+
+            /* Adding range */
+            *data = temp | (range & BMI160_ACCEL_RANGE_MASK);
+        }
+    } else {
+        rslt = BMI160_E_OUT_OF_RANGE;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API checks the invalid settings for ODR & Bw for
+ * Accel and Gyro.
+ */
+static int8_t check_invalid_settg(const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+
+    /* read the error reg */
+    rslt = bmi160_get_regs(BMI160_ERROR_REG_ADDR, &data, 1, dev);
+    data = data >> 1;
+    data = data & BMI160_ERR_REG_MASK;
+    if(data == 1) {
+        rslt = BMI160_E_ACCEL_ODR_BW_INVALID;
+    } else if(data == 2) {
+        rslt = BMI160_E_GYRO_ODR_BW_INVALID;
+    } else if(data == 3) {
+        rslt = BMI160_E_LWP_PRE_FLTR_INT_INVALID;
+    } else if(data == 7) {
+        rslt = BMI160_E_LWP_PRE_FLTR_INVALID;
+    }
+
+    return rslt;
+}
+static int8_t set_gyro_conf(struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data[2] = {0};
+
+    rslt = check_gyro_config(data, dev);
+    if(rslt == BMI160_OK) {
+        /* Write output data rate and bandwidth */
+        rslt = bmi160_set_regs(BMI160_GYRO_CONFIG_ADDR, &data[0], 1, dev);
+        if(rslt == BMI160_OK) {
+            dev->prev_gyro_cfg.odr = dev->gyro_cfg.odr;
+            dev->prev_gyro_cfg.bw = dev->gyro_cfg.bw;
+
+            /* Write gyro range */
+            rslt = bmi160_set_regs(BMI160_GYRO_RANGE_ADDR, &data[1], 1, dev);
+            if(rslt == BMI160_OK) {
+                dev->prev_gyro_cfg.range = dev->gyro_cfg.range;
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API gets the gyro configuration.
+ */
+static int8_t get_gyro_conf(struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data[2] = {0};
+
+    /* Get accel configurations */
+    rslt = bmi160_get_regs(BMI160_GYRO_CONFIG_ADDR, data, 2, dev);
+    if(rslt == BMI160_OK) {
+        dev->gyro_cfg.odr = (data[0] & BMI160_GYRO_ODR_MASK);
+        dev->gyro_cfg.bw = (data[0] & BMI160_GYRO_BW_MASK) >> BMI160_GYRO_BW_POS;
+        dev->gyro_cfg.range = (data[1] & BMI160_GYRO_RANGE_MASK);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API check the gyro configuration.
+ */
+static int8_t check_gyro_config(uint8_t* data, const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* read gyro Output data rate and bandwidth */
+    rslt = bmi160_get_regs(BMI160_GYRO_CONFIG_ADDR, data, 2, dev);
+    if(rslt == BMI160_OK) {
+        rslt = process_gyro_odr(&data[0], dev);
+        if(rslt == BMI160_OK) {
+            rslt = process_gyro_bw(&data[0], dev);
+            if(rslt == BMI160_OK) {
+                rslt = process_gyro_range(&data[1], dev);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API process the gyro odr.
+ */
+static int8_t process_gyro_odr(uint8_t* data, const struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t temp = 0;
+    uint8_t odr = 0;
+
+    if(dev->gyro_cfg.odr <= BMI160_GYRO_ODR_3200HZ) {
+        if(dev->gyro_cfg.odr != dev->prev_gyro_cfg.odr) {
+            odr = (uint8_t)dev->gyro_cfg.odr;
+            temp = (*data & ~BMI160_GYRO_ODR_MASK);
+
+            /* Adding output data rate */
+            *data = temp | (odr & BMI160_GYRO_ODR_MASK);
+        }
+    } else {
+        rslt = BMI160_E_OUT_OF_RANGE;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API process the gyro bandwidth.
+ */
+static int8_t process_gyro_bw(uint8_t* data, const struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t temp = 0;
+    uint8_t bw = 0;
+
+    if(dev->gyro_cfg.bw <= BMI160_GYRO_BW_NORMAL_MODE) {
+        bw = (uint8_t)dev->gyro_cfg.bw;
+        temp = *data & ~BMI160_GYRO_BW_MASK;
+
+        /* Adding bandwidth */
+        *data = temp | ((bw << 4) & BMI160_GYRO_BW_MASK);
+    } else {
+        rslt = BMI160_E_OUT_OF_RANGE;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API process the gyro range.
+ */
+static int8_t process_gyro_range(uint8_t* data, const struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t temp = 0;
+    uint8_t range = 0;
+
+    if(dev->gyro_cfg.range <= BMI160_GYRO_RANGE_125_DPS) {
+        if(dev->gyro_cfg.range != dev->prev_gyro_cfg.range) {
+            range = (uint8_t)dev->gyro_cfg.range;
+            temp = *data & ~BMI160_GYRO_RANGE_MASK;
+
+            /* Adding range */
+            *data = temp | (range & BMI160_GYRO_RANGE_MASK);
+        }
+    } else {
+        rslt = BMI160_E_OUT_OF_RANGE;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the accel power.
+ */
+static int8_t set_accel_pwr(struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+    uint8_t data = 0;
+
+    if((dev->accel_cfg.power >= BMI160_ACCEL_SUSPEND_MODE) &&
+       (dev->accel_cfg.power <= BMI160_ACCEL_LOWPOWER_MODE)) {
+        if(dev->accel_cfg.power != dev->prev_accel_cfg.power) {
+            rslt = process_under_sampling(&data, dev);
+            if(rslt == BMI160_OK) {
+                /* Write accel power */
+                rslt = bmi160_set_regs(BMI160_COMMAND_REG_ADDR, &dev->accel_cfg.power, 1, dev);
+
+                /* Add delay of 3.8 ms - refer data sheet table 24*/
+                if(dev->prev_accel_cfg.power == BMI160_ACCEL_SUSPEND_MODE) {
+                    dev->delay_ms(BMI160_ACCEL_DELAY_MS);
+                }
+
+                dev->prev_accel_cfg.power = dev->accel_cfg.power;
+            }
+        }
+    } else {
+        rslt = BMI160_E_INVALID_CONFIG;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API process the undersampling setting of Accel.
+ */
+static int8_t process_under_sampling(uint8_t* data, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t temp = 0;
+    uint8_t pre_filter[2] = {0};
+
+    rslt = bmi160_get_regs(BMI160_ACCEL_CONFIG_ADDR, data, 1, dev);
+    if(rslt == BMI160_OK) {
+        if(dev->accel_cfg.power == BMI160_ACCEL_LOWPOWER_MODE) {
+            temp = *data & ~BMI160_ACCEL_UNDERSAMPLING_MASK;
+
+            /* Set under-sampling parameter */
+            *data = temp | ((1 << 7) & BMI160_ACCEL_UNDERSAMPLING_MASK);
+
+            /* Write data */
+            rslt = bmi160_set_regs(BMI160_ACCEL_CONFIG_ADDR, data, 1, dev);
+
+            /* Disable the pre-filter data in low power mode */
+            if(rslt == BMI160_OK) {
+                /* Disable the Pre-filter data*/
+                rslt = bmi160_set_regs(BMI160_INT_DATA_0_ADDR, pre_filter, 2, dev);
+            }
+        } else if(*data & BMI160_ACCEL_UNDERSAMPLING_MASK) {
+            temp = *data & ~BMI160_ACCEL_UNDERSAMPLING_MASK;
+
+            /* Disable under-sampling parameter if already enabled */
+            *data = temp;
+
+            /* Write data */
+            rslt = bmi160_set_regs(BMI160_ACCEL_CONFIG_ADDR, data, 1, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API sets the gyro power mode.
+ */
+static int8_t set_gyro_pwr(struct bmi160_dev* dev) {
+    int8_t rslt = 0;
+
+    if((dev->gyro_cfg.power == BMI160_GYRO_SUSPEND_MODE) ||
+       (dev->gyro_cfg.power == BMI160_GYRO_NORMAL_MODE) ||
+       (dev->gyro_cfg.power == BMI160_GYRO_FASTSTARTUP_MODE)) {
+        if(dev->gyro_cfg.power != dev->prev_gyro_cfg.power) {
+            /* Write gyro power */
+            rslt = bmi160_set_regs(BMI160_COMMAND_REG_ADDR, &dev->gyro_cfg.power, 1, dev);
+            if(dev->prev_gyro_cfg.power == BMI160_GYRO_SUSPEND_MODE) {
+                /* Delay of 80 ms - datasheet Table 24 */
+                dev->delay_ms(BMI160_GYRO_DELAY_MS);
+            } else if(
+                (dev->prev_gyro_cfg.power == BMI160_GYRO_FASTSTARTUP_MODE) &&
+                (dev->gyro_cfg.power == BMI160_GYRO_NORMAL_MODE)) {
+                /* This delay is required for transition from
+                 * fast-startup mode to normal mode - datasheet Table 3 */
+                dev->delay_ms(10);
+            } else {
+                /* do nothing */
+            }
+
+            dev->prev_gyro_cfg.power = dev->gyro_cfg.power;
+        }
+    } else {
+        rslt = BMI160_E_INVALID_CONFIG;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API reads accel data along with sensor time if time is requested
+ * by user. Kindly refer the user guide(README.md) for more info.
+ */
+static int8_t
+    get_accel_data(uint8_t len, struct bmi160_sensor_data* accel, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t idx = 0;
+    uint8_t data_array[9] = {0};
+    uint8_t time_0 = 0;
+    uint16_t time_1 = 0;
+    uint32_t time_2 = 0;
+    uint8_t lsb;
+    uint8_t msb;
+    int16_t msblsb;
+
+    /* read accel sensor data along with time if requested */
+    rslt = bmi160_get_regs(BMI160_ACCEL_DATA_ADDR, data_array, 6 + len, dev);
+    if(rslt == BMI160_OK) {
+        /* Accel Data */
+        lsb = data_array[idx++];
+        msb = data_array[idx++];
+        msblsb = (int16_t)((msb << 8) | lsb);
+        accel->x = msblsb; /* Data in X axis */
+        lsb = data_array[idx++];
+        msb = data_array[idx++];
+        msblsb = (int16_t)((msb << 8) | lsb);
+        accel->y = msblsb; /* Data in Y axis */
+        lsb = data_array[idx++];
+        msb = data_array[idx++];
+        msblsb = (int16_t)((msb << 8) | lsb);
+        accel->z = msblsb; /* Data in Z axis */
+        if(len == 3) {
+            time_0 = data_array[idx++];
+            time_1 = (uint16_t)(data_array[idx++] << 8);
+            time_2 = (uint32_t)(data_array[idx++] << 16);
+            accel->sensortime = (uint32_t)(time_2 | time_1 | time_0);
+        } else {
+            accel->sensortime = 0;
+        }
+    } else {
+        rslt = BMI160_E_COM_FAIL;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API reads accel data along with sensor time if time is requested
+ * by user. Kindly refer the user guide(README.md) for more info.
+ */
+static int8_t
+    get_gyro_data(uint8_t len, struct bmi160_sensor_data* gyro, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t idx = 0;
+    uint8_t data_array[15] = {0};
+    uint8_t time_0 = 0;
+    uint16_t time_1 = 0;
+    uint32_t time_2 = 0;
+    uint8_t lsb;
+    uint8_t msb;
+    int16_t msblsb;
+
+    if(len == 0) {
+        /* read gyro data only */
+        rslt = bmi160_get_regs(BMI160_GYRO_DATA_ADDR, data_array, 6, dev);
+        if(rslt == BMI160_OK) {
+            /* Gyro Data */
+            lsb = data_array[idx++];
+            msb = data_array[idx++];
+            msblsb = (int16_t)((msb << 8) | lsb);
+            gyro->x = msblsb; /* Data in X axis */
+            lsb = data_array[idx++];
+            msb = data_array[idx++];
+            msblsb = (int16_t)((msb << 8) | lsb);
+            gyro->y = msblsb; /* Data in Y axis */
+            lsb = data_array[idx++];
+            msb = data_array[idx++];
+            msblsb = (int16_t)((msb << 8) | lsb);
+            gyro->z = msblsb; /* Data in Z axis */
+            gyro->sensortime = 0;
+        } else {
+            rslt = BMI160_E_COM_FAIL;
+        }
+    } else {
+        /* read gyro sensor data along with time */
+        rslt = bmi160_get_regs(BMI160_GYRO_DATA_ADDR, data_array, 12 + len, dev);
+        if(rslt == BMI160_OK) {
+            /* Gyro Data */
+            lsb = data_array[idx++];
+            msb = data_array[idx++];
+            msblsb = (int16_t)((msb << 8) | lsb);
+            gyro->x = msblsb; /* gyro X axis data */
+            lsb = data_array[idx++];
+            msb = data_array[idx++];
+            msblsb = (int16_t)((msb << 8) | lsb);
+            gyro->y = msblsb; /* gyro Y axis data */
+            lsb = data_array[idx++];
+            msb = data_array[idx++];
+            msblsb = (int16_t)((msb << 8) | lsb);
+            gyro->z = msblsb; /* gyro Z axis data */
+            idx = idx + 6;
+            time_0 = data_array[idx++];
+            time_1 = (uint16_t)(data_array[idx++] << 8);
+            time_2 = (uint32_t)(data_array[idx++] << 16);
+            gyro->sensortime = (uint32_t)(time_2 | time_1 | time_0);
+        } else {
+            rslt = BMI160_E_COM_FAIL;
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API reads accel and gyro data along with sensor time
+ * if time is requested by user.
+ *  Kindly refer the user guide(README.md) for more info.
+ */
+static int8_t get_accel_gyro_data(
+    uint8_t len,
+    struct bmi160_sensor_data* accel,
+    struct bmi160_sensor_data* gyro,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t idx = 0;
+    uint8_t data_array[15] = {0};
+    uint8_t time_0 = 0;
+    uint16_t time_1 = 0;
+    uint32_t time_2 = 0;
+    uint8_t lsb;
+    uint8_t msb;
+    int16_t msblsb;
+
+    /* read both accel and gyro sensor data
+     * along with time if requested */
+    rslt = bmi160_get_regs(BMI160_GYRO_DATA_ADDR, data_array, 12 + len, dev);
+    if(rslt == BMI160_OK) {
+        /* Gyro Data */
+        lsb = data_array[idx++];
+        msb = data_array[idx++];
+        msblsb = (int16_t)((msb << 8) | lsb);
+        gyro->x = msblsb; /* gyro X axis data */
+        lsb = data_array[idx++];
+        msb = data_array[idx++];
+        msblsb = (int16_t)((msb << 8) | lsb);
+        gyro->y = msblsb; /* gyro Y axis data */
+        lsb = data_array[idx++];
+        msb = data_array[idx++];
+        msblsb = (int16_t)((msb << 8) | lsb);
+        gyro->z = msblsb; /* gyro Z axis data */
+        /* Accel Data */
+        lsb = data_array[idx++];
+        msb = data_array[idx++];
+        msblsb = (int16_t)((msb << 8) | lsb);
+        accel->x = (int16_t)msblsb; /* accel X axis data */
+        lsb = data_array[idx++];
+        msb = data_array[idx++];
+        msblsb = (int16_t)((msb << 8) | lsb);
+        accel->y = (int16_t)msblsb; /* accel Y axis data */
+        lsb = data_array[idx++];
+        msb = data_array[idx++];
+        msblsb = (int16_t)((msb << 8) | lsb);
+        accel->z = (int16_t)msblsb; /* accel Z axis data */
+        if(len == 3) {
+            time_0 = data_array[idx++];
+            time_1 = (uint16_t)(data_array[idx++] << 8);
+            time_2 = (uint32_t)(data_array[idx++] << 16);
+            accel->sensortime = (uint32_t)(time_2 | time_1 | time_0);
+            gyro->sensortime = (uint32_t)(time_2 | time_1 | time_0);
+        } else {
+            accel->sensortime = 0;
+            gyro->sensortime = 0;
+        }
+    } else {
+        rslt = BMI160_E_COM_FAIL;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables the any-motion interrupt for accel.
+ */
+static int8_t enable_accel_any_motion_int(
+    const struct bmi160_acc_any_mot_int_cfg* any_motion_int_cfg,
+    struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Enable any motion x, any motion y, any motion z
+     * in Int Enable 0 register */
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_0_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        if(any_motion_int_cfg->anymotion_en == BMI160_ENABLE) {
+            temp = data & ~BMI160_ANY_MOTION_X_INT_EN_MASK;
+
+            /* Adding Any_motion x axis */
+            data = temp | (any_motion_int_cfg->anymotion_x & BMI160_ANY_MOTION_X_INT_EN_MASK);
+            temp = data & ~BMI160_ANY_MOTION_Y_INT_EN_MASK;
+
+            /* Adding Any_motion y axis */
+            data = temp |
+                   ((any_motion_int_cfg->anymotion_y << 1) & BMI160_ANY_MOTION_Y_INT_EN_MASK);
+            temp = data & ~BMI160_ANY_MOTION_Z_INT_EN_MASK;
+
+            /* Adding Any_motion z axis */
+            data = temp |
+                   ((any_motion_int_cfg->anymotion_z << 2) & BMI160_ANY_MOTION_Z_INT_EN_MASK);
+
+            /* any-motion feature selected*/
+            dev->any_sig_sel = BMI160_ANY_MOTION_ENABLED;
+        } else {
+            data = data & ~BMI160_ANY_MOTION_ALL_INT_EN_MASK;
+
+            /* neither any-motion feature nor sig-motion selected */
+            dev->any_sig_sel = BMI160_BOTH_ANY_SIG_MOTION_DISABLED;
+        }
+
+        /* write data to Int Enable 0 register */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_0_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API disable the sig-motion interrupt.
+ */
+static int8_t disable_sig_motion_int(const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Disabling Significant motion interrupt if enabled */
+    rslt = bmi160_get_regs(BMI160_INT_MOTION_3_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = (data & BMI160_SIG_MOTION_SEL_MASK);
+        if(temp) {
+            temp = data & ~BMI160_SIG_MOTION_SEL_MASK;
+            data = temp;
+
+            /* Write data to register */
+            rslt = bmi160_set_regs(BMI160_INT_MOTION_3_ADDR, &data, 1, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API is used to map/unmap the Any/Sig motion, Step det/Low-g,
+ *  Double tap, Single tap, Orientation, Flat, High-G, Nomotion interrupt pins.
+ */
+static int8_t
+    map_feature_interrupt(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data[3] = {0, 0, 0};
+    uint8_t temp[3] = {0, 0, 0};
+
+    rslt = bmi160_get_regs(BMI160_INT_MAP_0_ADDR, data, 3, dev);
+    if(rslt == BMI160_OK) {
+        temp[0] = data[0] & ~int_mask_lookup_table[int_config->int_type];
+        temp[2] = data[2] & ~int_mask_lookup_table[int_config->int_type];
+        switch(int_config->int_channel) {
+        case BMI160_INT_CHANNEL_NONE:
+            data[0] = temp[0];
+            data[2] = temp[2];
+            break;
+        case BMI160_INT_CHANNEL_1:
+            data[0] = temp[0] | int_mask_lookup_table[int_config->int_type];
+            data[2] = temp[2];
+            break;
+        case BMI160_INT_CHANNEL_2:
+            data[2] = temp[2] | int_mask_lookup_table[int_config->int_type];
+            data[0] = temp[0];
+            break;
+        case BMI160_INT_CHANNEL_BOTH:
+            data[0] = temp[0] | int_mask_lookup_table[int_config->int_type];
+            data[2] = temp[2] | int_mask_lookup_table[int_config->int_type];
+            break;
+        default:
+            rslt = BMI160_E_OUT_OF_RANGE;
+        }
+        if(rslt == BMI160_OK) {
+            rslt = bmi160_set_regs(BMI160_INT_MAP_0_ADDR, data, 3, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API is used to map/unmap the Dataready(Accel & Gyro), FIFO full
+ *  and FIFO watermark interrupt.
+ */
+static int8_t map_hardware_interrupt(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    rslt = bmi160_get_regs(BMI160_INT_MAP_1_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~int_mask_lookup_table[int_config->int_type];
+        temp = temp & ~((uint8_t)(int_mask_lookup_table[int_config->int_type] << 4));
+        switch(int_config->int_channel) {
+        case BMI160_INT_CHANNEL_NONE:
+            data = temp;
+            break;
+        case BMI160_INT_CHANNEL_1:
+            data = temp | (uint8_t)((int_mask_lookup_table[int_config->int_type]) << 4);
+            break;
+        case BMI160_INT_CHANNEL_2:
+            data = temp | int_mask_lookup_table[int_config->int_type];
+            break;
+        case BMI160_INT_CHANNEL_BOTH:
+            data = temp | int_mask_lookup_table[int_config->int_type];
+            data = data | (uint8_t)((int_mask_lookup_table[int_config->int_type]) << 4);
+            break;
+        default:
+            rslt = BMI160_E_OUT_OF_RANGE;
+        }
+        if(rslt == BMI160_OK) {
+            rslt = bmi160_set_regs(BMI160_INT_MAP_1_ADDR, &data, 1, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the source of data(filter & pre-filter)
+ * for any-motion interrupt.
+ */
+static int8_t config_any_motion_src(
+    const struct bmi160_acc_any_mot_int_cfg* any_motion_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Configure Int data 1 register to add source of interrupt */
+    rslt = bmi160_get_regs(BMI160_INT_DATA_1_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_MOTION_SRC_INT_MASK;
+        data = temp | ((any_motion_int_cfg->anymotion_data_src << 7) & BMI160_MOTION_SRC_INT_MASK);
+
+        /* Write data to DATA 1 address */
+        rslt = bmi160_set_regs(BMI160_INT_DATA_1_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the duration and threshold of
+ * any-motion interrupt.
+ */
+static int8_t config_any_dur_threshold(
+    const struct bmi160_acc_any_mot_int_cfg* any_motion_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+    uint8_t data_array[2] = {0};
+    uint8_t dur;
+
+    /* Configure Int Motion 0 register */
+    rslt = bmi160_get_regs(BMI160_INT_MOTION_0_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        /* slope duration */
+        dur = (uint8_t)any_motion_int_cfg->anymotion_dur;
+        temp = data & ~BMI160_SLOPE_INT_DUR_MASK;
+        data = temp | (dur & BMI160_MOTION_SRC_INT_MASK);
+        data_array[0] = data;
+
+        /* add slope threshold */
+        data_array[1] = any_motion_int_cfg->anymotion_thr;
+
+        /* INT MOTION 0 and INT MOTION 1 address lie consecutively,
+         * hence writing data to respective registers at one go */
+
+        /* Writing to Int_motion 0 and
+         * Int_motion 1 Address simultaneously */
+        rslt = bmi160_set_regs(BMI160_INT_MOTION_0_ADDR, data_array, 2, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure necessary setting of any-motion interrupt.
+ */
+static int8_t config_any_motion_int_settg(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_any_mot_int_cfg* any_motion_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Configure Interrupt pins */
+    rslt = set_intr_pin_config(int_config, dev);
+    if(rslt == BMI160_OK) {
+        rslt = disable_sig_motion_int(dev);
+        if(rslt == BMI160_OK) {
+            rslt = map_feature_interrupt(int_config, dev);
+            if(rslt == BMI160_OK) {
+                rslt = config_any_motion_src(any_motion_int_cfg, dev);
+                if(rslt == BMI160_OK) {
+                    rslt = config_any_dur_threshold(any_motion_int_cfg, dev);
+                }
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enable the data ready interrupt.
+ */
+static int8_t enable_data_ready_int(const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Enable data ready interrupt in Int Enable 1 register */
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_1_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_DATA_RDY_INT_EN_MASK;
+        data = temp | ((1 << 4) & BMI160_DATA_RDY_INT_EN_MASK);
+
+        /* Writing data to INT ENABLE 1 Address */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_1_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables the no motion/slow motion interrupt.
+ */
+static int8_t enable_no_motion_int(
+    const struct bmi160_acc_no_motion_int_cfg* no_mot_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Enable no motion x, no motion y, no motion z
+     * in Int Enable 2 register */
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_2_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        if(no_mot_int_cfg->no_motion_x == 1) {
+            temp = data & ~BMI160_NO_MOTION_X_INT_EN_MASK;
+
+            /* Adding No_motion x axis */
+            data = temp | (1 & BMI160_NO_MOTION_X_INT_EN_MASK);
+        }
+
+        if(no_mot_int_cfg->no_motion_y == 1) {
+            temp = data & ~BMI160_NO_MOTION_Y_INT_EN_MASK;
+
+            /* Adding No_motion x axis */
+            data = temp | ((1 << 1) & BMI160_NO_MOTION_Y_INT_EN_MASK);
+        }
+
+        if(no_mot_int_cfg->no_motion_z == 1) {
+            temp = data & ~BMI160_NO_MOTION_Z_INT_EN_MASK;
+
+            /* Adding No_motion x axis */
+            data = temp | ((1 << 2) & BMI160_NO_MOTION_Z_INT_EN_MASK);
+        }
+
+        /* write data to Int Enable 2 register */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_2_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the interrupt PIN setting for
+ * no motion/slow motion interrupt.
+ */
+static int8_t config_no_motion_int_settg(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_no_motion_int_cfg* no_mot_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Configure Interrupt pins */
+    rslt = set_intr_pin_config(int_config, dev);
+    if(rslt == BMI160_OK) {
+        rslt = map_feature_interrupt(int_config, dev);
+        if(rslt == BMI160_OK) {
+            rslt = config_no_motion_data_src(no_mot_int_cfg, dev);
+            if(rslt == BMI160_OK) {
+                rslt = config_no_motion_dur_thr(no_mot_int_cfg, dev);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the source of interrupt for no motion.
+ */
+static int8_t config_no_motion_data_src(
+    const struct bmi160_acc_no_motion_int_cfg* no_mot_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Configure Int data 1 register to add source of interrupt */
+    rslt = bmi160_get_regs(BMI160_INT_DATA_1_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_MOTION_SRC_INT_MASK;
+        data = temp | ((no_mot_int_cfg->no_motion_src << 7) & BMI160_MOTION_SRC_INT_MASK);
+
+        /* Write data to DATA 1 address */
+        rslt = bmi160_set_regs(BMI160_INT_DATA_1_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the duration and threshold of
+ * no motion/slow motion interrupt along with selection of no/slow motion.
+ */
+static int8_t config_no_motion_dur_thr(
+    const struct bmi160_acc_no_motion_int_cfg* no_mot_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+    uint8_t temp_1 = 0;
+    uint8_t reg_addr;
+    uint8_t data_array[2] = {0};
+
+    /* Configuring INT_MOTION register */
+    reg_addr = BMI160_INT_MOTION_0_ADDR;
+    rslt = bmi160_get_regs(reg_addr, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_NO_MOTION_INT_DUR_MASK;
+
+        /* Adding no_motion duration */
+        data = temp | ((no_mot_int_cfg->no_motion_dur << 2) & BMI160_NO_MOTION_INT_DUR_MASK);
+
+        /* Write data to NO_MOTION 0 address */
+        rslt = bmi160_set_regs(reg_addr, &data, 1, dev);
+        if(rslt == BMI160_OK) {
+            reg_addr = BMI160_INT_MOTION_3_ADDR;
+            rslt = bmi160_get_regs(reg_addr, &data, 1, dev);
+            if(rslt == BMI160_OK) {
+                temp = data & ~BMI160_NO_MOTION_SEL_BIT_MASK;
+
+                /* Adding no_motion_sel bit */
+                temp_1 = (no_mot_int_cfg->no_motion_sel & BMI160_NO_MOTION_SEL_BIT_MASK);
+                data = (temp | temp_1);
+                data_array[1] = data;
+
+                /* Adding no motion threshold */
+                data_array[0] = no_mot_int_cfg->no_motion_thres;
+                reg_addr = BMI160_INT_MOTION_2_ADDR;
+
+                /* writing data to INT_MOTION 2 and INT_MOTION 3
+                 * address simultaneously */
+                rslt = bmi160_set_regs(reg_addr, data_array, 2, dev);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables the sig-motion motion interrupt.
+ */
+static int8_t enable_sig_motion_int(
+    const struct bmi160_acc_sig_mot_int_cfg* sig_mot_int_cfg,
+    struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* For significant motion,enable any motion x,any motion y,
+     * any motion z in Int Enable 0 register */
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_0_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        if(sig_mot_int_cfg->sig_en == BMI160_ENABLE) {
+            temp = data & ~BMI160_SIG_MOTION_INT_EN_MASK;
+            data = temp | (7 & BMI160_SIG_MOTION_INT_EN_MASK);
+
+            /* sig-motion feature selected*/
+            dev->any_sig_sel = BMI160_SIG_MOTION_ENABLED;
+        } else {
+            data = data & ~BMI160_SIG_MOTION_INT_EN_MASK;
+
+            /* neither any-motion feature nor sig-motion selected */
+            dev->any_sig_sel = BMI160_BOTH_ANY_SIG_MOTION_DISABLED;
+        }
+
+        /* write data to Int Enable 0 register */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_0_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the interrupt PIN setting for
+ * significant motion interrupt.
+ */
+static int8_t config_sig_motion_int_settg(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_sig_mot_int_cfg* sig_mot_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Configure Interrupt pins */
+    rslt = set_intr_pin_config(int_config, dev);
+    if(rslt == BMI160_OK) {
+        rslt = map_feature_interrupt(int_config, dev);
+        if(rslt == BMI160_OK) {
+            rslt = config_sig_motion_data_src(sig_mot_int_cfg, dev);
+            if(rslt == BMI160_OK) {
+                rslt = config_sig_dur_threshold(sig_mot_int_cfg, dev);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the source of data(filter & pre-filter)
+ * for sig motion interrupt.
+ */
+static int8_t config_sig_motion_data_src(
+    const struct bmi160_acc_sig_mot_int_cfg* sig_mot_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Configure Int data 1 register to add source of interrupt */
+    rslt = bmi160_get_regs(BMI160_INT_DATA_1_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_MOTION_SRC_INT_MASK;
+        data = temp | ((sig_mot_int_cfg->sig_data_src << 7) & BMI160_MOTION_SRC_INT_MASK);
+
+        /* Write data to DATA 1 address */
+        rslt = bmi160_set_regs(BMI160_INT_DATA_1_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the threshold, skip and proof time of
+ * sig motion interrupt.
+ */
+static int8_t config_sig_dur_threshold(
+    const struct bmi160_acc_sig_mot_int_cfg* sig_mot_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data;
+    uint8_t temp = 0;
+
+    /* Configuring INT_MOTION registers */
+
+    /* Write significant motion threshold.
+     * This threshold is same as any motion threshold */
+    data = sig_mot_int_cfg->sig_mot_thres;
+
+    /* Write data to INT_MOTION 1 address */
+    rslt = bmi160_set_regs(BMI160_INT_MOTION_1_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        rslt = bmi160_get_regs(BMI160_INT_MOTION_3_ADDR, &data, 1, dev);
+        if(rslt == BMI160_OK) {
+            temp = data & ~BMI160_SIG_MOTION_SKIP_MASK;
+
+            /* adding skip time of sig_motion interrupt*/
+            data = temp | ((sig_mot_int_cfg->sig_mot_skip << 2) & BMI160_SIG_MOTION_SKIP_MASK);
+            temp = data & ~BMI160_SIG_MOTION_PROOF_MASK;
+
+            /* adding proof time of sig_motion interrupt */
+            data = temp | ((sig_mot_int_cfg->sig_mot_proof << 4) & BMI160_SIG_MOTION_PROOF_MASK);
+
+            /* configure the int_sig_mot_sel bit to select
+             * significant motion interrupt */
+            temp = data & ~BMI160_SIG_MOTION_SEL_MASK;
+            data = temp | ((sig_mot_int_cfg->sig_en << 1) & BMI160_SIG_MOTION_SEL_MASK);
+            rslt = bmi160_set_regs(BMI160_INT_MOTION_3_ADDR, &data, 1, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables the step detector interrupt.
+ */
+static int8_t enable_step_detect_int(
+    const struct bmi160_acc_step_detect_int_cfg* step_detect_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Enable data ready interrupt in Int Enable 2 register */
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_2_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_STEP_DETECT_INT_EN_MASK;
+        data = temp |
+               ((step_detect_int_cfg->step_detector_en << 3) & BMI160_STEP_DETECT_INT_EN_MASK);
+
+        /* Writing data to INT ENABLE 2 Address */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_2_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the step detector parameter.
+ */
+static int8_t config_step_detect(
+    const struct bmi160_acc_step_detect_int_cfg* step_detect_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t temp = 0;
+    uint8_t data_array[2] = {0};
+
+    if(step_detect_int_cfg->step_detector_mode == BMI160_STEP_DETECT_NORMAL) {
+        /* Normal mode setting */
+        data_array[0] = 0x15;
+        data_array[1] = 0x03;
+    } else if(step_detect_int_cfg->step_detector_mode == BMI160_STEP_DETECT_SENSITIVE) {
+        /* Sensitive mode setting */
+        data_array[0] = 0x2D;
+        data_array[1] = 0x00;
+    } else if(step_detect_int_cfg->step_detector_mode == BMI160_STEP_DETECT_ROBUST) {
+        /* Robust mode setting */
+        data_array[0] = 0x1D;
+        data_array[1] = 0x07;
+    } else if(step_detect_int_cfg->step_detector_mode == BMI160_STEP_DETECT_USER_DEFINE) {
+        /* Non recommended User defined setting */
+        /* Configuring STEP_CONFIG register */
+        rslt = bmi160_get_regs(BMI160_INT_STEP_CONFIG_0_ADDR, &data_array[0], 2, dev);
+        if(rslt == BMI160_OK) {
+            temp = data_array[0] & ~BMI160_STEP_DETECT_MIN_THRES_MASK;
+
+            /* Adding min_threshold */
+            data_array[0] = temp | ((step_detect_int_cfg->min_threshold << 3) &
+                                    BMI160_STEP_DETECT_MIN_THRES_MASK);
+            temp = data_array[0] & ~BMI160_STEP_DETECT_STEPTIME_MIN_MASK;
+
+            /* Adding steptime_min */
+            data_array[0] = temp | ((step_detect_int_cfg->steptime_min) &
+                                    BMI160_STEP_DETECT_STEPTIME_MIN_MASK);
+            temp = data_array[1] & ~BMI160_STEP_MIN_BUF_MASK;
+
+            /* Adding steptime_min */
+            data_array[1] = temp |
+                            ((step_detect_int_cfg->step_min_buf) & BMI160_STEP_MIN_BUF_MASK);
+        }
+    }
+
+    /* Write data to STEP_CONFIG register */
+    rslt = bmi160_set_regs(BMI160_INT_STEP_CONFIG_0_ADDR, data_array, 2, dev);
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables the single/double tap interrupt.
+ */
+static int8_t enable_tap_int(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_tap_int_cfg* tap_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Enable single tap or double tap interrupt in Int Enable 0 register */
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_0_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        if(int_config->int_type == BMI160_ACC_SINGLE_TAP_INT) {
+            temp = data & ~BMI160_SINGLE_TAP_INT_EN_MASK;
+            data = temp | ((tap_int_cfg->tap_en << 5) & BMI160_SINGLE_TAP_INT_EN_MASK);
+        } else {
+            temp = data & ~BMI160_DOUBLE_TAP_INT_EN_MASK;
+            data = temp | ((tap_int_cfg->tap_en << 4) & BMI160_DOUBLE_TAP_INT_EN_MASK);
+        }
+
+        /* Write to Enable 0 Address */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_0_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the interrupt PIN setting for
+ * tap interrupt.
+ */
+static int8_t config_tap_int_settg(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_tap_int_cfg* tap_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Configure Interrupt pins */
+    rslt = set_intr_pin_config(int_config, dev);
+    if(rslt == BMI160_OK) {
+        rslt = map_feature_interrupt(int_config, dev);
+        if(rslt == BMI160_OK) {
+            rslt = config_tap_data_src(tap_int_cfg, dev);
+            if(rslt == BMI160_OK) {
+                rslt = config_tap_param(int_config, tap_int_cfg, dev);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the source of data(filter & pre-filter)
+ * for tap interrupt.
+ */
+static int8_t config_tap_data_src(
+    const struct bmi160_acc_tap_int_cfg* tap_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Configure Int data 0 register to add source of interrupt */
+    rslt = bmi160_get_regs(BMI160_INT_DATA_0_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_TAP_SRC_INT_MASK;
+        data = temp | ((tap_int_cfg->tap_data_src << 3) & BMI160_TAP_SRC_INT_MASK);
+
+        /* Write data to Data 0 address */
+        rslt = bmi160_set_regs(BMI160_INT_DATA_0_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the  parameters of tap interrupt.
+ * Threshold, quite, shock, and duration.
+ */
+static int8_t config_tap_param(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_acc_tap_int_cfg* tap_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t temp = 0;
+    uint8_t data = 0;
+    uint8_t data_array[2] = {0};
+    uint8_t count = 0;
+    uint8_t dur, shock, quiet, thres;
+
+    /* Configure tap 0 register for tap shock,tap quiet duration
+     * in case of single tap interrupt */
+    rslt = bmi160_get_regs(BMI160_INT_TAP_0_ADDR, data_array, 2, dev);
+    if(rslt == BMI160_OK) {
+        data = data_array[count];
+        if(int_config->int_type == BMI160_ACC_DOUBLE_TAP_INT) {
+            dur = (uint8_t)tap_int_cfg->tap_dur;
+            temp = (data & ~BMI160_TAP_DUR_MASK);
+
+            /* Add tap duration data in case of
+             * double tap interrupt */
+            data = temp | (dur & BMI160_TAP_DUR_MASK);
+        }
+
+        shock = (uint8_t)tap_int_cfg->tap_shock;
+        temp = data & ~BMI160_TAP_SHOCK_DUR_MASK;
+        data = temp | ((shock << 6) & BMI160_TAP_SHOCK_DUR_MASK);
+        quiet = (uint8_t)tap_int_cfg->tap_quiet;
+        temp = data & ~BMI160_TAP_QUIET_DUR_MASK;
+        data = temp | ((quiet << 7) & BMI160_TAP_QUIET_DUR_MASK);
+        data_array[count++] = data;
+        data = data_array[count];
+        thres = (uint8_t)tap_int_cfg->tap_thr;
+        temp = data & ~BMI160_TAP_THRES_MASK;
+        data = temp | (thres & BMI160_TAP_THRES_MASK);
+        data_array[count++] = data;
+
+        /* TAP 0 and TAP 1 address lie consecutively,
+         * hence writing data to respective registers at one go */
+
+        /* Writing to Tap 0 and Tap 1 Address simultaneously */
+        rslt = bmi160_set_regs(BMI160_INT_TAP_0_ADDR, data_array, count, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the secondary interface.
+ */
+static int8_t config_sec_if(const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t if_conf = 0;
+    uint8_t cmd = BMI160_AUX_NORMAL_MODE;
+
+    /* set the aux power mode to normal*/
+    rslt = bmi160_set_regs(BMI160_COMMAND_REG_ADDR, &cmd, 1, dev);
+    if(rslt == BMI160_OK) {
+        /* 0.5ms delay - refer datasheet table 24*/
+        dev->delay_ms(1);
+        rslt = bmi160_get_regs(BMI160_IF_CONF_ADDR, &if_conf, 1, dev);
+        if_conf |= (uint8_t)(1 << 5);
+        if(rslt == BMI160_OK) {
+            /*enable the secondary interface also*/
+            rslt = bmi160_set_regs(BMI160_IF_CONF_ADDR, &if_conf, 1, dev);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the ODR of the auxiliary sensor.
+ */
+static int8_t config_aux_odr(const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t aux_odr;
+
+    rslt = bmi160_get_regs(BMI160_AUX_ODR_ADDR, &aux_odr, 1, dev);
+    if(rslt == BMI160_OK) {
+        aux_odr = (uint8_t)(dev->aux_cfg.aux_odr);
+
+        /* Set the secondary interface ODR
+         * i.e polling rate of secondary sensor */
+        rslt = bmi160_set_regs(BMI160_AUX_ODR_ADDR, &aux_odr, 1, dev);
+        dev->delay_ms(BMI160_AUX_COM_DELAY);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API maps the actual burst read length set by user.
+ */
+static int8_t map_read_len(uint16_t* len, const struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+
+    switch(dev->aux_cfg.aux_rd_burst_len) {
+    case BMI160_AUX_READ_LEN_0:
+        *len = 1;
+        break;
+    case BMI160_AUX_READ_LEN_1:
+        *len = 2;
+        break;
+    case BMI160_AUX_READ_LEN_2:
+        *len = 6;
+        break;
+    case BMI160_AUX_READ_LEN_3:
+        *len = 8;
+        break;
+    default:
+        rslt = BMI160_E_INVALID_INPUT;
+        break;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the settings of auxiliary sensor.
+ */
+static int8_t config_aux_settg(const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    rslt = config_sec_if(dev);
+    if(rslt == BMI160_OK) {
+        /* Configures the auxiliary interface settings */
+        rslt = bmi160_config_aux_mode(dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API extract the read data from auxiliary sensor.
+ */
+static int8_t extract_aux_read(
+    uint16_t map_len,
+    uint8_t reg_addr,
+    uint8_t* aux_data,
+    uint16_t len,
+    const struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+    uint8_t data[8] = {
+        0,
+    };
+    uint8_t read_addr = BMI160_AUX_DATA_ADDR;
+    uint8_t count = 0;
+    uint8_t read_count;
+    uint8_t read_len = (uint8_t)map_len;
+
+    for(; count < len;) {
+        /* set address to read */
+        rslt = bmi160_set_regs(BMI160_AUX_IF_2_ADDR, &reg_addr, 1, dev);
+        dev->delay_ms(BMI160_AUX_COM_DELAY);
+        if(rslt == BMI160_OK) {
+            rslt = bmi160_get_regs(read_addr, data, map_len, dev);
+            if(rslt == BMI160_OK) {
+                read_count = 0;
+
+                /* if read len is less the burst read len
+                 * mention by user*/
+                if(len < map_len) {
+                    read_len = (uint8_t)len;
+                } else if((len - count) < map_len) {
+                    read_len = (uint8_t)(len - count);
+                }
+
+                for(; read_count < read_len; read_count++) {
+                    aux_data[count + read_count] = data[read_count];
+                }
+
+                reg_addr += (uint8_t)map_len;
+                count += (uint8_t)map_len;
+            } else {
+                rslt = BMI160_E_COM_FAIL;
+                break;
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables the orient interrupt.
+ */
+static int8_t enable_orient_int(
+    const struct bmi160_acc_orient_int_cfg* orient_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Enable data ready interrupt in Int Enable 0 register */
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_0_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_ORIENT_INT_EN_MASK;
+        data = temp | ((orient_int_cfg->orient_en << 6) & BMI160_ORIENT_INT_EN_MASK);
+
+        /* write data to Int Enable 0 register */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_0_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the necessary setting of orientation interrupt.
+ */
+static int8_t config_orient_int_settg(
+    const struct bmi160_acc_orient_int_cfg* orient_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+    uint8_t data_array[2] = {0, 0};
+
+    /* Configuring INT_ORIENT registers */
+    rslt = bmi160_get_regs(BMI160_INT_ORIENT_0_ADDR, data_array, 2, dev);
+    if(rslt == BMI160_OK) {
+        data = data_array[0];
+        temp = data & ~BMI160_ORIENT_MODE_MASK;
+
+        /* Adding Orientation mode */
+        data = temp | ((orient_int_cfg->orient_mode) & BMI160_ORIENT_MODE_MASK);
+        temp = data & ~BMI160_ORIENT_BLOCK_MASK;
+
+        /* Adding Orientation blocking */
+        data = temp | ((orient_int_cfg->orient_blocking << 2) & BMI160_ORIENT_BLOCK_MASK);
+        temp = data & ~BMI160_ORIENT_HYST_MASK;
+
+        /* Adding Orientation hysteresis */
+        data = temp | ((orient_int_cfg->orient_hyst << 4) & BMI160_ORIENT_HYST_MASK);
+        data_array[0] = data;
+        data = data_array[1];
+        temp = data & ~BMI160_ORIENT_THETA_MASK;
+
+        /* Adding Orientation threshold */
+        data = temp | ((orient_int_cfg->orient_theta) & BMI160_ORIENT_THETA_MASK);
+        temp = data & ~BMI160_ORIENT_UD_ENABLE;
+
+        /* Adding Orient_ud_en */
+        data = temp | ((orient_int_cfg->orient_ud_en << 6) & BMI160_ORIENT_UD_ENABLE);
+        temp = data & ~BMI160_AXES_EN_MASK;
+
+        /* Adding axes_en */
+        data = temp | ((orient_int_cfg->axes_ex << 7) & BMI160_AXES_EN_MASK);
+        data_array[1] = data;
+
+        /* Writing data to INT_ORIENT 0 and INT_ORIENT 1
+         * registers simultaneously */
+        rslt = bmi160_set_regs(BMI160_INT_ORIENT_0_ADDR, data_array, 2, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables the flat interrupt.
+ */
+static int8_t enable_flat_int(
+    const struct bmi160_acc_flat_detect_int_cfg* flat_int,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Enable flat interrupt in Int Enable 0 register */
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_0_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_FLAT_INT_EN_MASK;
+        data = temp | ((flat_int->flat_en << 7) & BMI160_FLAT_INT_EN_MASK);
+
+        /* write data to Int Enable 0 register */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_0_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the necessary setting of flat interrupt.
+ */
+static int8_t config_flat_int_settg(
+    const struct bmi160_acc_flat_detect_int_cfg* flat_int,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+    uint8_t data_array[2] = {0, 0};
+
+    /* Configuring INT_FLAT register */
+    rslt = bmi160_get_regs(BMI160_INT_FLAT_0_ADDR, data_array, 2, dev);
+    if(rslt == BMI160_OK) {
+        data = data_array[0];
+        temp = data & ~BMI160_FLAT_THRES_MASK;
+
+        /* Adding flat theta */
+        data = temp | ((flat_int->flat_theta) & BMI160_FLAT_THRES_MASK);
+        data_array[0] = data;
+        data = data_array[1];
+        temp = data & ~BMI160_FLAT_HOLD_TIME_MASK;
+
+        /* Adding flat hold time */
+        data = temp | ((flat_int->flat_hold_time << 4) & BMI160_FLAT_HOLD_TIME_MASK);
+        temp = data & ~BMI160_FLAT_HYST_MASK;
+
+        /* Adding flat hysteresis */
+        data = temp | ((flat_int->flat_hy) & BMI160_FLAT_HYST_MASK);
+        data_array[1] = data;
+
+        /* Writing data to INT_FLAT 0 and INT_FLAT 1
+         * registers simultaneously */
+        rslt = bmi160_set_regs(BMI160_INT_FLAT_0_ADDR, data_array, 2, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables the Low-g interrupt.
+ */
+static int8_t enable_low_g_int(
+    const struct bmi160_acc_low_g_int_cfg* low_g_int,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Enable low-g interrupt in Int Enable 1 register */
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_1_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_LOW_G_INT_EN_MASK;
+        data = temp | ((low_g_int->low_en << 3) & BMI160_LOW_G_INT_EN_MASK);
+
+        /* write data to Int Enable 0 register */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_1_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the source of data(filter & pre-filter)
+ * for low-g interrupt.
+ */
+static int8_t config_low_g_data_src(
+    const struct bmi160_acc_low_g_int_cfg* low_g_int,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Configure Int data 0 register to add source of interrupt */
+    rslt = bmi160_get_regs(BMI160_INT_DATA_0_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_LOW_HIGH_SRC_INT_MASK;
+        data = temp | ((low_g_int->low_data_src << 7) & BMI160_LOW_HIGH_SRC_INT_MASK);
+
+        /* Write data to Data 0 address */
+        rslt = bmi160_set_regs(BMI160_INT_DATA_0_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the necessary setting of low-g interrupt.
+ */
+static int8_t config_low_g_int_settg(
+    const struct bmi160_acc_low_g_int_cfg* low_g_int,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t temp = 0;
+    uint8_t data_array[3] = {0, 0, 0};
+
+    /* Configuring INT_LOWHIGH register for low-g interrupt */
+    rslt = bmi160_get_regs(BMI160_INT_LOWHIGH_2_ADDR, &data_array[2], 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data_array[2] & ~BMI160_LOW_G_HYST_MASK;
+
+        /* Adding low-g hysteresis */
+        data_array[2] = temp | (low_g_int->low_hyst & BMI160_LOW_G_HYST_MASK);
+        temp = data_array[2] & ~BMI160_LOW_G_LOW_MODE_MASK;
+
+        /* Adding low-mode */
+        data_array[2] = temp | ((low_g_int->low_mode << 2) & BMI160_LOW_G_LOW_MODE_MASK);
+
+        /* Adding low-g threshold */
+        data_array[1] = low_g_int->low_thres;
+
+        /* Adding low-g interrupt delay */
+        data_array[0] = low_g_int->low_dur;
+
+        /* Writing data to INT_LOWHIGH 0,1,2 registers simultaneously*/
+        rslt = bmi160_set_regs(BMI160_INT_LOWHIGH_0_ADDR, data_array, 3, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables the high-g interrupt.
+ */
+static int8_t enable_high_g_int(
+    const struct bmi160_acc_high_g_int_cfg* high_g_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Enable low-g interrupt in Int Enable 1 register */
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_1_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        /* Adding high-g X-axis */
+        temp = data & ~BMI160_HIGH_G_X_INT_EN_MASK;
+        data = temp | (high_g_int_cfg->high_g_x & BMI160_HIGH_G_X_INT_EN_MASK);
+
+        /* Adding high-g Y-axis */
+        temp = data & ~BMI160_HIGH_G_Y_INT_EN_MASK;
+        data = temp | ((high_g_int_cfg->high_g_y << 1) & BMI160_HIGH_G_Y_INT_EN_MASK);
+
+        /* Adding high-g Z-axis */
+        temp = data & ~BMI160_HIGH_G_Z_INT_EN_MASK;
+        data = temp | ((high_g_int_cfg->high_g_z << 2) & BMI160_HIGH_G_Z_INT_EN_MASK);
+
+        /* write data to Int Enable 0 register */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_1_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the source of data(filter & pre-filter)
+ * for high-g interrupt.
+ */
+static int8_t config_high_g_data_src(
+    const struct bmi160_acc_high_g_int_cfg* high_g_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+    uint8_t temp = 0;
+
+    /* Configure Int data 0 register to add source of interrupt */
+    rslt = bmi160_get_regs(BMI160_INT_DATA_0_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data & ~BMI160_LOW_HIGH_SRC_INT_MASK;
+        data = temp | ((high_g_int_cfg->high_data_src << 7) & BMI160_LOW_HIGH_SRC_INT_MASK);
+
+        /* Write data to Data 0 address */
+        rslt = bmi160_set_regs(BMI160_INT_DATA_0_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the necessary setting of high-g interrupt.
+ */
+static int8_t config_high_g_int_settg(
+    const struct bmi160_acc_high_g_int_cfg* high_g_int_cfg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t temp = 0;
+    uint8_t data_array[3] = {0, 0, 0};
+
+    rslt = bmi160_get_regs(BMI160_INT_LOWHIGH_2_ADDR, &data_array[0], 1, dev);
+    if(rslt == BMI160_OK) {
+        temp = data_array[0] & ~BMI160_HIGH_G_HYST_MASK;
+
+        /* Adding high-g hysteresis */
+        data_array[0] = temp | ((high_g_int_cfg->high_hy << 6) & BMI160_HIGH_G_HYST_MASK);
+
+        /* Adding high-g duration */
+        data_array[1] = high_g_int_cfg->high_dur;
+
+        /* Adding high-g threshold */
+        data_array[2] = high_g_int_cfg->high_thres;
+        rslt = bmi160_set_regs(BMI160_INT_LOWHIGH_2_ADDR, data_array, 3, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the behavioural setting of interrupt pin.
+ */
+static int8_t
+    config_int_out_ctrl(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t temp = 0;
+    uint8_t data = 0;
+
+    /* Configuration of output interrupt signals on pins INT1 and INT2 are
+     * done in BMI160_INT_OUT_CTRL_ADDR register*/
+    rslt = bmi160_get_regs(BMI160_INT_OUT_CTRL_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        /* updating the interrupt pin structure to local structure */
+        const struct bmi160_int_pin_settg* intr_pin_sett = &(int_config->int_pin_settg);
+
+        /* Configuring channel 1 */
+        if(int_config->int_channel == BMI160_INT_CHANNEL_1) {
+            /* Output enable */
+            temp = data & ~BMI160_INT1_OUTPUT_EN_MASK;
+            data = temp | ((intr_pin_sett->output_en << 3) & BMI160_INT1_OUTPUT_EN_MASK);
+
+            /* Output mode */
+            temp = data & ~BMI160_INT1_OUTPUT_MODE_MASK;
+            data = temp | ((intr_pin_sett->output_mode << 2) & BMI160_INT1_OUTPUT_MODE_MASK);
+
+            /* Output type */
+            temp = data & ~BMI160_INT1_OUTPUT_TYPE_MASK;
+            data = temp | ((intr_pin_sett->output_type << 1) & BMI160_INT1_OUTPUT_TYPE_MASK);
+
+            /* edge control */
+            temp = data & ~BMI160_INT1_EDGE_CTRL_MASK;
+            data = temp | ((intr_pin_sett->edge_ctrl) & BMI160_INT1_EDGE_CTRL_MASK);
+        } else {
+            /* Configuring channel 2 */
+            /* Output enable */
+            temp = data & ~BMI160_INT2_OUTPUT_EN_MASK;
+            data = temp | ((intr_pin_sett->output_en << 7) & BMI160_INT2_OUTPUT_EN_MASK);
+
+            /* Output mode */
+            temp = data & ~BMI160_INT2_OUTPUT_MODE_MASK;
+            data = temp | ((intr_pin_sett->output_mode << 6) & BMI160_INT2_OUTPUT_MODE_MASK);
+
+            /* Output type */
+            temp = data & ~BMI160_INT2_OUTPUT_TYPE_MASK;
+            data = temp | ((intr_pin_sett->output_type << 5) & BMI160_INT2_OUTPUT_TYPE_MASK);
+
+            /* edge control */
+            temp = data & ~BMI160_INT2_EDGE_CTRL_MASK;
+            data = temp | ((intr_pin_sett->edge_ctrl << 4) & BMI160_INT2_EDGE_CTRL_MASK);
+        }
+
+        rslt = bmi160_set_regs(BMI160_INT_OUT_CTRL_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API configure the mode(input enable, latch or non-latch) of interrupt pin.
+ */
+static int8_t
+    config_int_latch(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t temp = 0;
+    uint8_t data = 0;
+
+    /* Configuration of latch on pins INT1 and INT2 are done in
+     * BMI160_INT_LATCH_ADDR register*/
+    rslt = bmi160_get_regs(BMI160_INT_LATCH_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        /* updating the interrupt pin structure to local structure */
+        const struct bmi160_int_pin_settg* intr_pin_sett = &(int_config->int_pin_settg);
+        if(int_config->int_channel == BMI160_INT_CHANNEL_1) {
+            /* Configuring channel 1 */
+            /* Input enable */
+            temp = data & ~BMI160_INT1_INPUT_EN_MASK;
+            data = temp | ((intr_pin_sett->input_en << 4) & BMI160_INT1_INPUT_EN_MASK);
+        } else {
+            /* Configuring channel 2 */
+            /* Input enable */
+            temp = data & ~BMI160_INT2_INPUT_EN_MASK;
+            data = temp | ((intr_pin_sett->input_en << 5) & BMI160_INT2_INPUT_EN_MASK);
+        }
+
+        /* In case of latch interrupt,update the latch duration */
+
+        /* Latching holds the interrupt for the amount of latch
+         * duration time */
+        temp = data & ~BMI160_INT_LATCH_MASK;
+        data = temp | (intr_pin_sett->latch_dur & BMI160_INT_LATCH_MASK);
+
+        /* OUT_CTRL_INT and LATCH_INT address lie consecutively,
+         * hence writing data to respective registers at one go */
+        rslt = bmi160_set_regs(BMI160_INT_LATCH_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API performs the self test for accelerometer of BMI160
+ */
+static int8_t perform_accel_self_test(struct bmi160_dev* dev) {
+    int8_t rslt;
+    struct bmi160_sensor_data accel_pos, accel_neg;
+
+    /* Enable Gyro self test bit */
+    rslt = enable_accel_self_test(dev);
+    if(rslt == BMI160_OK) {
+        /* Perform accel self test with positive excitation */
+        rslt = accel_self_test_positive_excitation(&accel_pos, dev);
+        if(rslt == BMI160_OK) {
+            /* Perform accel self test with negative excitation */
+            rslt = accel_self_test_negative_excitation(&accel_neg, dev);
+            if(rslt == BMI160_OK) {
+                /* Validate the self test result */
+                rslt = validate_accel_self_test(&accel_pos, &accel_neg);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables to perform the accel self test by setting proper
+ * configurations to facilitate accel self test
+ */
+static int8_t enable_accel_self_test(struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t reg_data;
+
+    /* Set the Accel power mode as normal mode */
+    dev->accel_cfg.power = BMI160_ACCEL_NORMAL_MODE;
+
+    /* Set the sensor range configuration as 8G */
+    dev->accel_cfg.range = BMI160_ACCEL_RANGE_8G;
+    rslt = bmi160_set_sens_conf(dev);
+    if(rslt == BMI160_OK) {
+        /* Accel configurations are set to facilitate self test
+         * acc_odr - 1600Hz ; acc_bwp = 2 ; acc_us = 0 */
+        reg_data = BMI160_ACCEL_SELF_TEST_CONFIG;
+        rslt = bmi160_set_regs(BMI160_ACCEL_CONFIG_ADDR, &reg_data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API performs accel self test with positive excitation
+ */
+static int8_t accel_self_test_positive_excitation(
+    struct bmi160_sensor_data* accel_pos,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t reg_data;
+
+    /* Enable accel self test with positive self-test excitation
+     * and with amplitude of deflection set as high */
+    reg_data = BMI160_ACCEL_SELF_TEST_POSITIVE_EN;
+    rslt = bmi160_set_regs(BMI160_SELF_TEST_ADDR, &reg_data, 1, dev);
+    if(rslt == BMI160_OK) {
+        /* Read the data after a delay of 50ms - refer datasheet  2.8.1 accel self test*/
+        dev->delay_ms(BMI160_ACCEL_SELF_TEST_DELAY);
+        rslt = bmi160_get_sensor_data(BMI160_ACCEL_ONLY, accel_pos, NULL, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API performs accel self test with negative excitation
+ */
+static int8_t accel_self_test_negative_excitation(
+    struct bmi160_sensor_data* accel_neg,
+    const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t reg_data;
+
+    /* Enable accel self test with negative self-test excitation
+     * and with amplitude of deflection set as high */
+    reg_data = BMI160_ACCEL_SELF_TEST_NEGATIVE_EN;
+    rslt = bmi160_set_regs(BMI160_SELF_TEST_ADDR, &reg_data, 1, dev);
+    if(rslt == BMI160_OK) {
+        /* Read the data after a delay of 50ms */
+        dev->delay_ms(BMI160_ACCEL_SELF_TEST_DELAY);
+        rslt = bmi160_get_sensor_data(BMI160_ACCEL_ONLY, accel_neg, NULL, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API validates the accel self test results
+ */
+static int8_t validate_accel_self_test(
+    const struct bmi160_sensor_data* accel_pos,
+    const struct bmi160_sensor_data* accel_neg) {
+    int8_t rslt;
+
+    /* Validate the results of self test */
+    if(((accel_neg->x - accel_pos->x) > BMI160_ACCEL_SELF_TEST_LIMIT) &&
+       ((accel_neg->y - accel_pos->y) > BMI160_ACCEL_SELF_TEST_LIMIT) &&
+       ((accel_neg->z - accel_pos->z) > BMI160_ACCEL_SELF_TEST_LIMIT)) {
+        /* Self test pass condition */
+        rslt = BMI160_OK;
+    } else {
+        rslt = BMI160_W_ACCEl_SELF_TEST_FAIL;
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API performs the self test for gyroscope of BMI160
+ */
+static int8_t perform_gyro_self_test(const struct bmi160_dev* dev) {
+    int8_t rslt;
+
+    /* Enable Gyro self test bit */
+    rslt = enable_gyro_self_test(dev);
+    if(rslt == BMI160_OK) {
+        /* Validate the gyro self test a delay of 50ms */
+        dev->delay_ms(50);
+
+        /* Validate the gyro self test results */
+        rslt = validate_gyro_self_test(dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API enables the self test bit to trigger self test for Gyro
+ */
+static int8_t enable_gyro_self_test(const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t reg_data;
+
+    /* Enable the Gyro self test bit to trigger the self test */
+    rslt = bmi160_get_regs(BMI160_SELF_TEST_ADDR, &reg_data, 1, dev);
+    if(rslt == BMI160_OK) {
+        reg_data = BMI160_SET_BITS(reg_data, BMI160_GYRO_SELF_TEST, 1);
+        rslt = bmi160_set_regs(BMI160_SELF_TEST_ADDR, &reg_data, 1, dev);
+        if(rslt == BMI160_OK) {
+            /* Delay to enable gyro self test */
+            dev->delay_ms(15);
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This API validates the self test results of Gyro
+ */
+static int8_t validate_gyro_self_test(const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t reg_data;
+
+    /* Validate the Gyro self test result */
+    rslt = bmi160_get_regs(BMI160_STATUS_ADDR, &reg_data, 1, dev);
+    if(rslt == BMI160_OK) {
+        reg_data = BMI160_GET_BITS(reg_data, BMI160_GYRO_SELF_TEST_STATUS);
+        if(reg_data == BMI160_ENABLE) {
+            /* Gyro self test success case */
+            rslt = BMI160_OK;
+        } else {
+            rslt = BMI160_W_GYRO_SELF_TEST_FAIL;
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API sets FIFO full interrupt of the sensor.This interrupt
+ *  occurs when the FIFO is full and the next full data sample would cause
+ *  a FIFO overflow, which may delete the old samples.
+ */
+static int8_t
+    set_fifo_full_int(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+
+    /* Null-pointer check */
+    if((dev == NULL) || (dev->delay_ms == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /*enable the fifo full interrupt */
+        rslt = enable_fifo_full_int(int_config, dev);
+        if(rslt == BMI160_OK) {
+            /* Configure Interrupt pins */
+            rslt = set_intr_pin_config(int_config, dev);
+            if(rslt == BMI160_OK) {
+                rslt = map_hardware_interrupt(int_config, dev);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This enable the FIFO full interrupt engine.
+ */
+static int8_t
+    enable_fifo_full_int(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_1_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        data = BMI160_SET_BITS(data, BMI160_FIFO_FULL_INT, int_config->fifo_full_int_en);
+
+        /* Writing data to INT ENABLE 1 Address */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_1_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API sets FIFO watermark interrupt of the sensor.The FIFO
+ *  watermark interrupt is fired, when the FIFO fill level is above a fifo
+ *  watermark.
+ */
+static int8_t set_fifo_watermark_int(
+    const struct bmi160_int_settg* int_config,
+    const struct bmi160_dev* dev) {
+    int8_t rslt = BMI160_OK;
+
+    if((dev == NULL) || (dev->delay_ms == NULL)) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Enable fifo-watermark interrupt in Int Enable 1 register */
+        rslt = enable_fifo_wtm_int(int_config, dev);
+        if(rslt == BMI160_OK) {
+            /* Configure Interrupt pins */
+            rslt = set_intr_pin_config(int_config, dev);
+            if(rslt == BMI160_OK) {
+                rslt = map_hardware_interrupt(int_config, dev);
+            }
+        }
+    }
+
+    return rslt;
+}
+
+/*!
+ * @brief This enable the FIFO watermark interrupt engine.
+ */
+static int8_t
+    enable_fifo_wtm_int(const struct bmi160_int_settg* int_config, const struct bmi160_dev* dev) {
+    int8_t rslt;
+    uint8_t data = 0;
+
+    rslt = bmi160_get_regs(BMI160_INT_ENABLE_1_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        data = BMI160_SET_BITS(data, BMI160_FIFO_WTM_INT, int_config->fifo_wtm_int_en);
+
+        /* Writing data to INT ENABLE 1 Address */
+        rslt = bmi160_set_regs(BMI160_INT_ENABLE_1_ADDR, &data, 1, dev);
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API is used to reset the FIFO related configurations
+ *  in the fifo_frame structure.
+ */
+static void reset_fifo_data_structure(const struct bmi160_dev* dev) {
+    /*Prepare for next FIFO read by resetting FIFO's
+     * internal data structures*/
+    dev->fifo->accel_byte_start_idx = 0;
+    dev->fifo->gyro_byte_start_idx = 0;
+    dev->fifo->aux_byte_start_idx = 0;
+    dev->fifo->sensor_time = 0;
+    dev->fifo->skipped_frame_count = 0;
+}
+
+/*!
+ *  @brief This API is used to read fifo_byte_counter value (i.e)
+ *  current fill-level in Fifo buffer.
+ */
+static int8_t get_fifo_byte_counter(uint16_t* bytes_to_read, struct bmi160_dev const* dev) {
+    int8_t rslt = 0;
+    uint8_t data[2];
+    uint8_t addr = BMI160_FIFO_LENGTH_ADDR;
+
+    rslt |= bmi160_get_regs(addr, data, 2, dev);
+    data[1] = data[1] & BMI160_FIFO_BYTE_COUNTER_MASK;
+
+    /* Available data in FIFO is stored in bytes_to_read*/
+    *bytes_to_read = (((uint16_t)data[1] << 8) | ((uint16_t)data[0]));
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API is used to compute the number of bytes of accel FIFO data
+ *  which is to be parsed in header-less mode
+ */
+static void get_accel_len_to_parse(
+    uint16_t* data_index,
+    uint16_t* data_read_length,
+    const uint8_t* acc_frame_count,
+    const struct bmi160_dev* dev) {
+    /* Data start index */
+    *data_index = dev->fifo->accel_byte_start_idx;
+    if(dev->fifo->fifo_data_enable == BMI160_FIFO_A_ENABLE) {
+        *data_read_length = (*acc_frame_count) * BMI160_FIFO_A_LENGTH;
+    } else if(dev->fifo->fifo_data_enable == BMI160_FIFO_G_A_ENABLE) {
+        *data_read_length = (*acc_frame_count) * BMI160_FIFO_GA_LENGTH;
+    } else if(dev->fifo->fifo_data_enable == BMI160_FIFO_M_A_ENABLE) {
+        *data_read_length = (*acc_frame_count) * BMI160_FIFO_MA_LENGTH;
+    } else if(dev->fifo->fifo_data_enable == BMI160_FIFO_M_G_A_ENABLE) {
+        *data_read_length = (*acc_frame_count) * BMI160_FIFO_MGA_LENGTH;
+    } else {
+        /* When accel is not enabled ,there will be no accel data.
+         * so we update the data index as complete */
+        *data_index = dev->fifo->length;
+    }
+
+    if(*data_read_length > dev->fifo->length) {
+        /* Handling the case where more data is requested
+         * than that is available*/
+        *data_read_length = dev->fifo->length;
+    }
+}
+
+/*!
+ *  @brief This API is used to parse the accelerometer data from the
+ *  FIFO data in both header mode and header-less mode.
+ *  It updates the idx value which is used to store the index of
+ *  the current data byte which is parsed.
+ */
+static void unpack_accel_frame(
+    struct bmi160_sensor_data* acc,
+    uint16_t* idx,
+    uint8_t* acc_idx,
+    uint8_t frame_info,
+    const struct bmi160_dev* dev) {
+    switch(frame_info) {
+    case BMI160_FIFO_HEAD_A:
+    case BMI160_FIFO_A_ENABLE:
+
+        /*Partial read, then skip the data*/
+        if((*idx + BMI160_FIFO_A_LENGTH) > dev->fifo->length) {
+            /*Update the data index as complete*/
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /*Unpack the data array into the structure instance "acc" */
+        unpack_accel_data(&acc[*acc_idx], *idx, dev);
+
+        /*Move the data index*/
+        *idx = *idx + BMI160_FIFO_A_LENGTH;
+        (*acc_idx)++;
+        break;
+    case BMI160_FIFO_HEAD_G_A:
+    case BMI160_FIFO_G_A_ENABLE:
+
+        /*Partial read, then skip the data*/
+        if((*idx + BMI160_FIFO_GA_LENGTH) > dev->fifo->length) {
+            /*Update the data index as complete*/
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /*Unpack the data array into structure instance "acc"*/
+        unpack_accel_data(&acc[*acc_idx], *idx + BMI160_FIFO_G_LENGTH, dev);
+
+        /*Move the data index*/
+        *idx = *idx + BMI160_FIFO_GA_LENGTH;
+        (*acc_idx)++;
+        break;
+    case BMI160_FIFO_HEAD_M_A:
+    case BMI160_FIFO_M_A_ENABLE:
+
+        /*Partial read, then skip the data*/
+        if((*idx + BMI160_FIFO_MA_LENGTH) > dev->fifo->length) {
+            /*Update the data index as complete*/
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /*Unpack the data array into structure instance "acc"*/
+        unpack_accel_data(&acc[*acc_idx], *idx + BMI160_FIFO_M_LENGTH, dev);
+
+        /*Move the data index*/
+        *idx = *idx + BMI160_FIFO_MA_LENGTH;
+        (*acc_idx)++;
+        break;
+    case BMI160_FIFO_HEAD_M_G_A:
+    case BMI160_FIFO_M_G_A_ENABLE:
+
+        /*Partial read, then skip the data*/
+        if((*idx + BMI160_FIFO_MGA_LENGTH) > dev->fifo->length) {
+            /*Update the data index as complete*/
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /*Unpack the data array into structure instance "acc"*/
+        unpack_accel_data(&acc[*acc_idx], *idx + BMI160_FIFO_MG_LENGTH, dev);
+
+        /*Move the data index*/
+        *idx = *idx + BMI160_FIFO_MGA_LENGTH;
+        (*acc_idx)++;
+        break;
+    case BMI160_FIFO_HEAD_M:
+    case BMI160_FIFO_M_ENABLE:
+        (*idx) = (*idx) + BMI160_FIFO_M_LENGTH;
+        break;
+    case BMI160_FIFO_HEAD_G:
+    case BMI160_FIFO_G_ENABLE:
+        (*idx) = (*idx) + BMI160_FIFO_G_LENGTH;
+        break;
+    case BMI160_FIFO_HEAD_M_G:
+    case BMI160_FIFO_M_G_ENABLE:
+        (*idx) = (*idx) + BMI160_FIFO_MG_LENGTH;
+        break;
+    default:
+        break;
+    }
+}
+
+/*!
+ *  @brief This API is used to parse the accelerometer data from the
+ *  FIFO data and store it in the instance of the structure bmi160_sensor_data.
+ */
+static void unpack_accel_data(
+    struct bmi160_sensor_data* accel_data,
+    uint16_t data_start_index,
+    const struct bmi160_dev* dev) {
+    uint16_t data_lsb;
+    uint16_t data_msb;
+
+    /* Accel raw x data */
+    data_lsb = dev->fifo->data[data_start_index++];
+    data_msb = dev->fifo->data[data_start_index++];
+    accel_data->x = (int16_t)((data_msb << 8) | data_lsb);
+
+    /* Accel raw y data */
+    data_lsb = dev->fifo->data[data_start_index++];
+    data_msb = dev->fifo->data[data_start_index++];
+    accel_data->y = (int16_t)((data_msb << 8) | data_lsb);
+
+    /* Accel raw z data */
+    data_lsb = dev->fifo->data[data_start_index++];
+    data_msb = dev->fifo->data[data_start_index++];
+    accel_data->z = (int16_t)((data_msb << 8) | data_lsb);
+}
+
+/*!
+ *  @brief This API is used to parse the accelerometer data from the
+ *  FIFO data in header mode.
+ */
+static void extract_accel_header_mode(
+    struct bmi160_sensor_data* accel_data,
+    uint8_t* accel_length,
+    const struct bmi160_dev* dev) {
+    uint8_t frame_header = 0;
+    uint16_t data_index;
+    uint8_t accel_index = 0;
+
+    for(data_index = dev->fifo->accel_byte_start_idx; data_index < dev->fifo->length;) {
+        /* extracting Frame header */
+        frame_header = (dev->fifo->data[data_index] & BMI160_FIFO_TAG_INTR_MASK);
+
+        /*Index is moved to next byte where the data is starting*/
+        data_index++;
+        switch(frame_header) {
+        /* Accel frame */
+        case BMI160_FIFO_HEAD_A:
+        case BMI160_FIFO_HEAD_M_A:
+        case BMI160_FIFO_HEAD_G_A:
+        case BMI160_FIFO_HEAD_M_G_A:
+            unpack_accel_frame(accel_data, &data_index, &accel_index, frame_header, dev);
+            break;
+        case BMI160_FIFO_HEAD_M:
+            move_next_frame(&data_index, BMI160_FIFO_M_LENGTH, dev);
+            break;
+        case BMI160_FIFO_HEAD_G:
+            move_next_frame(&data_index, BMI160_FIFO_G_LENGTH, dev);
+            break;
+        case BMI160_FIFO_HEAD_M_G:
+            move_next_frame(&data_index, BMI160_FIFO_MG_LENGTH, dev);
+            break;
+
+        /* Sensor time frame */
+        case BMI160_FIFO_HEAD_SENSOR_TIME:
+            unpack_sensortime_frame(&data_index, dev);
+            break;
+
+        /* Skip frame */
+        case BMI160_FIFO_HEAD_SKIP_FRAME:
+            unpack_skipped_frame(&data_index, dev);
+            break;
+
+        /* Input config frame */
+        case BMI160_FIFO_HEAD_INPUT_CONFIG:
+            move_next_frame(&data_index, 1, dev);
+            break;
+        case BMI160_FIFO_HEAD_OVER_READ:
+
+            /* Update the data index as complete in case of Over read */
+            data_index = dev->fifo->length;
+            break;
+        default:
+            break;
+        }
+        if(*accel_length == accel_index) {
+            /* Number of frames to read completed */
+            break;
+        }
+    }
+
+    /*Update number of accel data read*/
+    *accel_length = accel_index;
+
+    /*Update the accel frame index*/
+    dev->fifo->accel_byte_start_idx = data_index;
+}
+
+/*!
+ *  @brief This API computes the number of bytes of gyro FIFO data
+ *  which is to be parsed in header-less mode
+ */
+static void get_gyro_len_to_parse(
+    uint16_t* data_index,
+    uint16_t* data_read_length,
+    const uint8_t* gyro_frame_count,
+    const struct bmi160_dev* dev) {
+    /* Data start index */
+    *data_index = dev->fifo->gyro_byte_start_idx;
+    if(dev->fifo->fifo_data_enable == BMI160_FIFO_G_ENABLE) {
+        *data_read_length = (*gyro_frame_count) * BMI160_FIFO_G_LENGTH;
+    } else if(dev->fifo->fifo_data_enable == BMI160_FIFO_G_A_ENABLE) {
+        *data_read_length = (*gyro_frame_count) * BMI160_FIFO_GA_LENGTH;
+    } else if(dev->fifo->fifo_data_enable == BMI160_FIFO_M_G_ENABLE) {
+        *data_read_length = (*gyro_frame_count) * BMI160_FIFO_MG_LENGTH;
+    } else if(dev->fifo->fifo_data_enable == BMI160_FIFO_M_G_A_ENABLE) {
+        *data_read_length = (*gyro_frame_count) * BMI160_FIFO_MGA_LENGTH;
+    } else {
+        /* When gyro is not enabled ,there will be no gyro data.
+         * so we update the data index as complete */
+        *data_index = dev->fifo->length;
+    }
+
+    if(*data_read_length > dev->fifo->length) {
+        /* Handling the case where more data is requested
+         * than that is available*/
+        *data_read_length = dev->fifo->length;
+    }
+}
+
+/*!
+ *  @brief This API is used to parse the gyroscope's data from the
+ *  FIFO data in both header mode and header-less mode.
+ *  It updates the idx value which is used to store the index of
+ *  the current data byte which is parsed.
+ */
+static void unpack_gyro_frame(
+    struct bmi160_sensor_data* gyro,
+    uint16_t* idx,
+    uint8_t* gyro_idx,
+    uint8_t frame_info,
+    const struct bmi160_dev* dev) {
+    switch(frame_info) {
+    case BMI160_FIFO_HEAD_G:
+    case BMI160_FIFO_G_ENABLE:
+
+        /*Partial read, then skip the data*/
+        if((*idx + BMI160_FIFO_G_LENGTH) > dev->fifo->length) {
+            /*Update the data index as complete*/
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /*Unpack the data array into structure instance "gyro"*/
+        unpack_gyro_data(&gyro[*gyro_idx], *idx, dev);
+
+        /*Move the data index*/
+        (*idx) = (*idx) + BMI160_FIFO_G_LENGTH;
+        (*gyro_idx)++;
+        break;
+    case BMI160_FIFO_HEAD_G_A:
+    case BMI160_FIFO_G_A_ENABLE:
+
+        /*Partial read, then skip the data*/
+        if((*idx + BMI160_FIFO_GA_LENGTH) > dev->fifo->length) {
+            /*Update the data index as complete*/
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /* Unpack the data array into structure instance "gyro" */
+        unpack_gyro_data(&gyro[*gyro_idx], *idx, dev);
+
+        /* Move the data index */
+        *idx = *idx + BMI160_FIFO_GA_LENGTH;
+        (*gyro_idx)++;
+        break;
+    case BMI160_FIFO_HEAD_M_G_A:
+    case BMI160_FIFO_M_G_A_ENABLE:
+
+        /*Partial read, then skip the data*/
+        if((*idx + BMI160_FIFO_MGA_LENGTH) > dev->fifo->length) {
+            /*Update the data index as complete*/
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /*Unpack the data array into structure instance "gyro"*/
+        unpack_gyro_data(&gyro[*gyro_idx], *idx + BMI160_FIFO_M_LENGTH, dev);
+
+        /*Move the data index*/
+        *idx = *idx + BMI160_FIFO_MGA_LENGTH;
+        (*gyro_idx)++;
+        break;
+    case BMI160_FIFO_HEAD_M_A:
+    case BMI160_FIFO_M_A_ENABLE:
+
+        /* Move the data index */
+        *idx = *idx + BMI160_FIFO_MA_LENGTH;
+        break;
+    case BMI160_FIFO_HEAD_M:
+    case BMI160_FIFO_M_ENABLE:
+        (*idx) = (*idx) + BMI160_FIFO_M_LENGTH;
+        break;
+    case BMI160_FIFO_HEAD_M_G:
+    case BMI160_FIFO_M_G_ENABLE:
+
+        /*Partial read, then skip the data*/
+        if((*idx + BMI160_FIFO_MG_LENGTH) > dev->fifo->length) {
+            /*Update the data index as complete*/
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /*Unpack the data array into structure instance "gyro"*/
+        unpack_gyro_data(&gyro[*gyro_idx], *idx + BMI160_FIFO_M_LENGTH, dev);
+
+        /*Move the data index*/
+        (*idx) = (*idx) + BMI160_FIFO_MG_LENGTH;
+        (*gyro_idx)++;
+        break;
+    case BMI160_FIFO_HEAD_A:
+    case BMI160_FIFO_A_ENABLE:
+
+        /*Move the data index*/
+        *idx = *idx + BMI160_FIFO_A_LENGTH;
+        break;
+    default:
+        break;
+    }
+}
+
+/*!
+ *  @brief This API is used to parse the gyro data from the
+ *  FIFO data and store it in the instance of the structure bmi160_sensor_data.
+ */
+static void unpack_gyro_data(
+    struct bmi160_sensor_data* gyro_data,
+    uint16_t data_start_index,
+    const struct bmi160_dev* dev) {
+    uint16_t data_lsb;
+    uint16_t data_msb;
+
+    /* Gyro raw x data */
+    data_lsb = dev->fifo->data[data_start_index++];
+    data_msb = dev->fifo->data[data_start_index++];
+    gyro_data->x = (int16_t)((data_msb << 8) | data_lsb);
+
+    /* Gyro raw y data */
+    data_lsb = dev->fifo->data[data_start_index++];
+    data_msb = dev->fifo->data[data_start_index++];
+    gyro_data->y = (int16_t)((data_msb << 8) | data_lsb);
+
+    /* Gyro raw z data */
+    data_lsb = dev->fifo->data[data_start_index++];
+    data_msb = dev->fifo->data[data_start_index++];
+    gyro_data->z = (int16_t)((data_msb << 8) | data_lsb);
+}
+
+/*!
+ *  @brief This API is used to parse the gyro data from the
+ *  FIFO data in header mode.
+ */
+static void extract_gyro_header_mode(
+    struct bmi160_sensor_data* gyro_data,
+    uint8_t* gyro_length,
+    const struct bmi160_dev* dev) {
+    uint8_t frame_header = 0;
+    uint16_t data_index;
+    uint8_t gyro_index = 0;
+
+    for(data_index = dev->fifo->gyro_byte_start_idx; data_index < dev->fifo->length;) {
+        /* extracting Frame header */
+        frame_header = (dev->fifo->data[data_index] & BMI160_FIFO_TAG_INTR_MASK);
+
+        /*Index is moved to next byte where the data is starting*/
+        data_index++;
+        switch(frame_header) {
+        /* GYRO frame */
+        case BMI160_FIFO_HEAD_G:
+        case BMI160_FIFO_HEAD_G_A:
+        case BMI160_FIFO_HEAD_M_G:
+        case BMI160_FIFO_HEAD_M_G_A:
+            unpack_gyro_frame(gyro_data, &data_index, &gyro_index, frame_header, dev);
+            break;
+        case BMI160_FIFO_HEAD_A:
+            move_next_frame(&data_index, BMI160_FIFO_A_LENGTH, dev);
+            break;
+        case BMI160_FIFO_HEAD_M:
+            move_next_frame(&data_index, BMI160_FIFO_M_LENGTH, dev);
+            break;
+        case BMI160_FIFO_HEAD_M_A:
+            move_next_frame(&data_index, BMI160_FIFO_M_LENGTH, dev);
+            break;
+
+        /* Sensor time frame */
+        case BMI160_FIFO_HEAD_SENSOR_TIME:
+            unpack_sensortime_frame(&data_index, dev);
+            break;
+
+        /* Skip frame */
+        case BMI160_FIFO_HEAD_SKIP_FRAME:
+            unpack_skipped_frame(&data_index, dev);
+            break;
+
+        /* Input config frame */
+        case BMI160_FIFO_HEAD_INPUT_CONFIG:
+            move_next_frame(&data_index, 1, dev);
+            break;
+        case BMI160_FIFO_HEAD_OVER_READ:
+
+            /* Update the data index as complete in case of over read */
+            data_index = dev->fifo->length;
+            break;
+        default:
+            break;
+        }
+        if(*gyro_length == gyro_index) {
+            /*Number of frames to read completed*/
+            break;
+        }
+    }
+
+    /*Update number of gyro data read*/
+    *gyro_length = gyro_index;
+
+    /*Update the gyro frame index*/
+    dev->fifo->gyro_byte_start_idx = data_index;
+}
+
+/*!
+ *  @brief This API computes the number of bytes of aux FIFO data
+ *  which is to be parsed in header-less mode
+ */
+static void get_aux_len_to_parse(
+    uint16_t* data_index,
+    uint16_t* data_read_length,
+    const uint8_t* aux_frame_count,
+    const struct bmi160_dev* dev) {
+    /* Data start index */
+    *data_index = dev->fifo->gyro_byte_start_idx;
+    if(dev->fifo->fifo_data_enable == BMI160_FIFO_M_ENABLE) {
+        *data_read_length = (*aux_frame_count) * BMI160_FIFO_M_LENGTH;
+    } else if(dev->fifo->fifo_data_enable == BMI160_FIFO_M_A_ENABLE) {
+        *data_read_length = (*aux_frame_count) * BMI160_FIFO_MA_LENGTH;
+    } else if(dev->fifo->fifo_data_enable == BMI160_FIFO_M_G_ENABLE) {
+        *data_read_length = (*aux_frame_count) * BMI160_FIFO_MG_LENGTH;
+    } else if(dev->fifo->fifo_data_enable == BMI160_FIFO_M_G_A_ENABLE) {
+        *data_read_length = (*aux_frame_count) * BMI160_FIFO_MGA_LENGTH;
+    } else {
+        /* When aux is not enabled ,there will be no aux data.
+         * so we update the data index as complete */
+        *data_index = dev->fifo->length;
+    }
+
+    if(*data_read_length > dev->fifo->length) {
+        /* Handling the case where more data is requested
+         * than that is available */
+        *data_read_length = dev->fifo->length;
+    }
+}
+
+/*!
+ *  @brief This API is used to parse the aux's data from the
+ *  FIFO data in both header mode and header-less mode.
+ *  It updates the idx value which is used to store the index of
+ *  the current data byte which is parsed
+ */
+static void unpack_aux_frame(
+    struct bmi160_aux_data* aux_data,
+    uint16_t* idx,
+    uint8_t* aux_index,
+    uint8_t frame_info,
+    const struct bmi160_dev* dev) {
+    switch(frame_info) {
+    case BMI160_FIFO_HEAD_M:
+    case BMI160_FIFO_M_ENABLE:
+
+        /* Partial read, then skip the data */
+        if((*idx + BMI160_FIFO_M_LENGTH) > dev->fifo->length) {
+            /* Update the data index as complete */
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /* Unpack the data array into structure instance */
+        unpack_aux_data(&aux_data[*aux_index], *idx, dev);
+
+        /* Move the data index */
+        *idx = *idx + BMI160_FIFO_M_LENGTH;
+        (*aux_index)++;
+        break;
+    case BMI160_FIFO_HEAD_M_A:
+    case BMI160_FIFO_M_A_ENABLE:
+
+        /* Partial read, then skip the data */
+        if((*idx + BMI160_FIFO_MA_LENGTH) > dev->fifo->length) {
+            /* Update the data index as complete */
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /* Unpack the data array into structure instance */
+        unpack_aux_data(&aux_data[*aux_index], *idx, dev);
+
+        /* Move the data index */
+        *idx = *idx + BMI160_FIFO_MA_LENGTH;
+        (*aux_index)++;
+        break;
+    case BMI160_FIFO_HEAD_M_G:
+    case BMI160_FIFO_M_G_ENABLE:
+
+        /* Partial read, then skip the data */
+        if((*idx + BMI160_FIFO_MG_LENGTH) > dev->fifo->length) {
+            /* Update the data index as complete */
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /* Unpack the data array into structure instance */
+        unpack_aux_data(&aux_data[*aux_index], *idx, dev);
+
+        /* Move the data index */
+        (*idx) = (*idx) + BMI160_FIFO_MG_LENGTH;
+        (*aux_index)++;
+        break;
+    case BMI160_FIFO_HEAD_M_G_A:
+    case BMI160_FIFO_M_G_A_ENABLE:
+
+        /*Partial read, then skip the data*/
+        if((*idx + BMI160_FIFO_MGA_LENGTH) > dev->fifo->length) {
+            /* Update the data index as complete */
+            *idx = dev->fifo->length;
+            break;
+        }
+
+        /* Unpack the data array into structure instance */
+        unpack_aux_data(&aux_data[*aux_index], *idx, dev);
+
+        /*Move the data index*/
+        *idx = *idx + BMI160_FIFO_MGA_LENGTH;
+        (*aux_index)++;
+        break;
+    case BMI160_FIFO_HEAD_G:
+    case BMI160_FIFO_G_ENABLE:
+
+        /* Move the data index */
+        (*idx) = (*idx) + BMI160_FIFO_G_LENGTH;
+        break;
+    case BMI160_FIFO_HEAD_G_A:
+    case BMI160_FIFO_G_A_ENABLE:
+
+        /* Move the data index */
+        *idx = *idx + BMI160_FIFO_GA_LENGTH;
+        break;
+    case BMI160_FIFO_HEAD_A:
+    case BMI160_FIFO_A_ENABLE:
+
+        /* Move the data index */
+        *idx = *idx + BMI160_FIFO_A_LENGTH;
+        break;
+    default:
+        break;
+    }
+}
+
+/*!
+ *  @brief This API is used to parse the aux data from the
+ *  FIFO data and store it in the instance of the structure bmi160_aux_data.
+ */
+static void unpack_aux_data(
+    struct bmi160_aux_data* aux_data,
+    uint16_t data_start_index,
+    const struct bmi160_dev* dev) {
+    /* Aux data bytes */
+    aux_data->data[0] = dev->fifo->data[data_start_index++];
+    aux_data->data[1] = dev->fifo->data[data_start_index++];
+    aux_data->data[2] = dev->fifo->data[data_start_index++];
+    aux_data->data[3] = dev->fifo->data[data_start_index++];
+    aux_data->data[4] = dev->fifo->data[data_start_index++];
+    aux_data->data[5] = dev->fifo->data[data_start_index++];
+    aux_data->data[6] = dev->fifo->data[data_start_index++];
+    aux_data->data[7] = dev->fifo->data[data_start_index++];
+}
+
+/*!
+ *  @brief This API is used to parse the aux data from the
+ *  FIFO data in header mode.
+ */
+static void extract_aux_header_mode(
+    struct bmi160_aux_data* aux_data,
+    uint8_t* aux_length,
+    const struct bmi160_dev* dev) {
+    uint8_t frame_header = 0;
+    uint16_t data_index;
+    uint8_t aux_index = 0;
+
+    for(data_index = dev->fifo->aux_byte_start_idx; data_index < dev->fifo->length;) {
+        /* extracting Frame header */
+        frame_header = (dev->fifo->data[data_index] & BMI160_FIFO_TAG_INTR_MASK);
+
+        /*Index is moved to next byte where the data is starting*/
+        data_index++;
+        switch(frame_header) {
+        /* Aux frame */
+        case BMI160_FIFO_HEAD_M:
+        case BMI160_FIFO_HEAD_M_A:
+        case BMI160_FIFO_HEAD_M_G:
+        case BMI160_FIFO_HEAD_M_G_A:
+            unpack_aux_frame(aux_data, &data_index, &aux_index, frame_header, dev);
+            break;
+        case BMI160_FIFO_HEAD_G:
+            move_next_frame(&data_index, BMI160_FIFO_G_LENGTH, dev);
+            break;
+        case BMI160_FIFO_HEAD_G_A:
+            move_next_frame(&data_index, BMI160_FIFO_GA_LENGTH, dev);
+            break;
+        case BMI160_FIFO_HEAD_A:
+            move_next_frame(&data_index, BMI160_FIFO_A_LENGTH, dev);
+            break;
+
+        /* Sensor time frame */
+        case BMI160_FIFO_HEAD_SENSOR_TIME:
+            unpack_sensortime_frame(&data_index, dev);
+            break;
+
+        /* Skip frame */
+        case BMI160_FIFO_HEAD_SKIP_FRAME:
+            unpack_skipped_frame(&data_index, dev);
+            break;
+
+        /* Input config frame */
+        case BMI160_FIFO_HEAD_INPUT_CONFIG:
+            move_next_frame(&data_index, 1, dev);
+            break;
+        case BMI160_FIFO_HEAD_OVER_READ:
+
+            /* Update the data index as complete in case
+                 * of over read */
+            data_index = dev->fifo->length;
+            break;
+        default:
+
+            /* Update the data index as complete in case of
+                 * getting other headers like 0x00 */
+            data_index = dev->fifo->length;
+            break;
+        }
+        if(*aux_length == aux_index) {
+            /*Number of frames to read completed*/
+            break;
+        }
+    }
+
+    /* Update number of aux data read */
+    *aux_length = aux_index;
+
+    /* Update the aux frame index */
+    dev->fifo->aux_byte_start_idx = data_index;
+}
+
+/*!
+ *  @brief This API checks the presence of non-valid frames in the read fifo data.
+ */
+static void check_frame_validity(uint16_t* data_index, const struct bmi160_dev* dev) {
+    if((*data_index + 2) < dev->fifo->length) {
+        /* Check if FIFO is empty */
+        if((dev->fifo->data[*data_index] == FIFO_CONFIG_MSB_CHECK) &&
+           (dev->fifo->data[*data_index + 1] == FIFO_CONFIG_LSB_CHECK)) {
+            /*Update the data index as complete*/
+            *data_index = dev->fifo->length;
+        }
+    }
+}
+
+/*!
+ *  @brief This API is used to move the data index ahead of the
+ *  current_frame_length parameter when unnecessary FIFO data appears while
+ *  extracting the user specified data.
+ */
+static void move_next_frame(
+    uint16_t* data_index,
+    uint8_t current_frame_length,
+    const struct bmi160_dev* dev) {
+    /*Partial read, then move the data index to last data*/
+    if((*data_index + current_frame_length) > dev->fifo->length) {
+        /*Update the data index as complete*/
+        *data_index = dev->fifo->length;
+    } else {
+        /*Move the data index to next frame*/
+        *data_index = *data_index + current_frame_length;
+    }
+}
+
+/*!
+ *  @brief This API is used to parse and store the sensor time from the
+ *  FIFO data in the structure instance dev.
+ */
+static void unpack_sensortime_frame(uint16_t* data_index, const struct bmi160_dev* dev) {
+    uint32_t sensor_time_byte3 = 0;
+    uint16_t sensor_time_byte2 = 0;
+    uint8_t sensor_time_byte1 = 0;
+
+    /*Partial read, then move the data index to last data*/
+    if((*data_index + BMI160_SENSOR_TIME_LENGTH) > dev->fifo->length) {
+        /*Update the data index as complete*/
+        *data_index = dev->fifo->length;
+    } else {
+        sensor_time_byte3 = dev->fifo->data[(*data_index) + BMI160_SENSOR_TIME_MSB_BYTE] << 16;
+        sensor_time_byte2 = dev->fifo->data[(*data_index) + BMI160_SENSOR_TIME_XLSB_BYTE] << 8;
+        sensor_time_byte1 = dev->fifo->data[(*data_index)];
+
+        /* Sensor time */
+        dev->fifo->sensor_time =
+            (uint32_t)(sensor_time_byte3 | sensor_time_byte2 | sensor_time_byte1);
+        *data_index = (*data_index) + BMI160_SENSOR_TIME_LENGTH;
+    }
+}
+
+/*!
+ *  @brief This API is used to parse and store the skipped_frame_count from
+ *  the FIFO data in the structure instance dev.
+ */
+static void unpack_skipped_frame(uint16_t* data_index, const struct bmi160_dev* dev) {
+    /*Partial read, then move the data index to last data*/
+    if(*data_index >= dev->fifo->length) {
+        /*Update the data index as complete*/
+        *data_index = dev->fifo->length;
+    } else {
+        dev->fifo->skipped_frame_count = dev->fifo->data[*data_index];
+
+        /*Move the data index*/
+        *data_index = (*data_index) + 1;
+    }
+}
+
+/*!
+ *  @brief This API is used to get the FOC status from the sensor
+ */
+static int8_t get_foc_status(uint8_t* foc_status, struct bmi160_dev const* dev) {
+    int8_t rslt;
+    uint8_t data;
+
+    /* Read the FOC status from sensor */
+    rslt = bmi160_get_regs(BMI160_STATUS_ADDR, &data, 1, dev);
+    if(rslt == BMI160_OK) {
+        /* Get the foc_status bit */
+        *foc_status = BMI160_GET_BITS(data, BMI160_FOC_STATUS);
+    }
+
+    return rslt;
+}
+
+/*!
+ *  @brief This API is used to configure the offset enable bits in the sensor
+ */
+static int8_t
+    configure_offset_enable(const struct bmi160_foc_conf* foc_conf, struct bmi160_dev const* dev) {
+    int8_t rslt;
+    uint8_t data;
+
+    /* Null-pointer check */
+    rslt = null_ptr_check(dev);
+    if(rslt != BMI160_OK) {
+        rslt = BMI160_E_NULL_PTR;
+    } else {
+        /* Read the FOC config from the sensor */
+        rslt = bmi160_get_regs(BMI160_OFFSET_CONF_ADDR, &data, 1, dev);
+        if(rslt == BMI160_OK) {
+            /* Set the offset enable/disable for gyro */
+            data = BMI160_SET_BITS(data, BMI160_GYRO_OFFSET_EN, foc_conf->gyro_off_en);
+
+            /* Set the offset enable/disable for accel */
+            data = BMI160_SET_BITS(data, BMI160_ACCEL_OFFSET_EN, foc_conf->acc_off_en);
+
+            /* Set the offset config in the sensor */
+            rslt = bmi160_set_regs(BMI160_OFFSET_CONF_ADDR, &data, 1, dev);
+        }
+    }
+
+    return rslt;
+}
+
+static int8_t trigger_foc(struct bmi160_offsets* offset, struct bmi160_dev const* dev) {
+    int8_t rslt;
+    uint8_t foc_status = BMI160_ENABLE;
+    uint8_t cmd = BMI160_START_FOC_CMD;
+    uint8_t timeout = 0;
+    uint8_t data_array[20];
+
+    /* Start the FOC process */
+    rslt = bmi160_set_regs(BMI160_COMMAND_REG_ADDR, &cmd, 1, dev);
+    if(rslt == BMI160_OK) {
+        /* Check the FOC status*/
+        rslt = get_foc_status(&foc_status, dev);
+
+        if((rslt != BMI160_OK) || (foc_status != BMI160_ENABLE)) {
+            while((foc_status != BMI160_ENABLE) && (timeout < 11)) {
+                /* Maximum time of 250ms is given in 10
+                 * steps of 25ms each - 250ms refer datasheet 2.9.1 */
+                dev->delay_ms(25);
+
+                /* Check the FOC status*/
+                rslt = get_foc_status(&foc_status, dev);
+                timeout++;
+            }
+
+            if((rslt == BMI160_OK) && (foc_status == BMI160_ENABLE)) {
+                /* Get offset values from sensor */
+                rslt = bmi160_get_offsets(offset, dev);
+            } else {
+                /* FOC failure case */
+                rslt = BMI160_E_FOC_FAILURE;
+            }
+        }
+
+        if(rslt == BMI160_OK) {
+            /* Read registers 0x04-0x17 */
+            rslt = bmi160_get_regs(BMI160_GYRO_DATA_ADDR, data_array, 20, dev);
+        }
+    }
+
+    return rslt;
+}

+ 992 - 0
airmouse/tracking/imu/bmi160.h

@@ -0,0 +1,992 @@
+/**
+* Copyright (c) 2021 Bosch Sensortec GmbH. All rights reserved.
+*
+* BSD-3-Clause
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright
+*    notice, this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright
+*    notice, this list of conditions and the following disclaimer in the
+*    documentation and/or other materials provided with the distribution.
+*
+* 3. Neither the name of the copyright holder nor the names of its
+*    contributors may be used to endorse or promote products derived from
+*    this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+*
+* @file       bmi160.h
+* @date       2021-10-05
+* @version    v3.9.2
+*
+*/
+
+/*!
+ * @defgroup bmi160 BMI160
+ */
+
+#ifndef BMI160_H_
+#define BMI160_H_
+
+/*************************** C++ guard macro *****************************/
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "bmi160_defs.h"
+#ifdef __KERNEL__
+#include <bmi160_math.h>
+#else
+#include <math.h>
+#include <string.h>
+#include <stdlib.h>
+#endif
+
+/*********************** User function prototypes ************************/
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiInit Initialization
+ * @brief Initialize the sensor and device structure
+ */
+
+/*!
+ * \ingroup bmi160ApiInit
+ * \page bmi160_api_bmi160_init bmi160_init
+ * \code
+ * int8_t bmi160_init(struct bmi160_dev *dev);
+ * \endcode
+ * @details This API is the entry point for sensor.It performs
+ *  the selection of I2C/SPI read mechanism according to the
+ *  selected interface and reads the chip-id of bmi160 sensor.
+ *
+ *  @param[in,out] dev : Structure instance of bmi160_dev
+ *  @note : Refer user guide for detailed info.
+ *
+ *  @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_init(struct bmi160_dev* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiRegs Registers
+ * @brief Read data from the given register address of sensor
+ */
+
+/*!
+ * \ingroup bmi160ApiRegs
+ * \page bmi160_api_bmi160_get_regs bmi160_get_regs
+ * \code
+ * int8_t bmi160_get_regs(uint8_t reg_addr, uint8_t *data, uint16_t len, const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API reads the data from the given register address of sensor.
+ *
+ * @param[in] reg_addr  : Register address from where the data to be read
+ * @param[out] data     : Pointer to data buffer to store the read data.
+ * @param[in] len       : No of bytes of data to be read.
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @note For most of the registers auto address increment applies, with the
+ * exception of a few special registers, which trap the address. For e.g.,
+ * Register address - 0x24(BMI160_FIFO_DATA_ADDR)
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t
+    bmi160_get_regs(uint8_t reg_addr, uint8_t* data, uint16_t len, const struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiRegs
+ * \page bmi160_api_bmi160_set_regs bmi160_set_regs
+ * \code
+ * int8_t bmi160_set_regs(uint8_t reg_addr, uint8_t *data, uint16_t len, const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API writes the given data to the register address
+ * of sensor.
+ *
+ * @param[in] reg_addr  : Register address from where the data to be written.
+ * @param[in] data      : Pointer to data buffer which is to be written
+ * in the sensor.
+ * @param[in] len       : No of bytes of data to write..
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t
+    bmi160_set_regs(uint8_t reg_addr, uint8_t* data, uint16_t len, const struct bmi160_dev* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiSoftreset Soft reset
+ * @brief Perform soft reset of the sensor
+ */
+
+/*!
+ * \ingroup bmi160ApiSoftreset
+ * \page bmi160_api_bmi160_soft_reset bmi160_soft_reset
+ * \code
+ * int8_t bmi160_soft_reset(struct bmi160_dev *dev);
+ * \endcode
+ * @details This API resets and restarts the device.
+ * All register values are overwritten with default parameters.
+ *
+ * @param[in] dev  : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_soft_reset(struct bmi160_dev* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiConfig Configuration
+ * @brief Configuration of the sensor
+ */
+
+/*!
+ * \ingroup bmi160ApiConfig
+ * \page bmi160_api_bmi160_set_sens_conf bmi160_set_sens_conf
+ * \code
+ * int8_t bmi160_set_sens_conf(struct bmi160_dev *dev);
+ * \endcode
+ * @details This API configures the power mode, range and bandwidth
+ * of sensor.
+ *
+ * @param[in] dev    : Structure instance of bmi160_dev.
+ * @note : Refer user guide for detailed info.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_set_sens_conf(struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiConfig
+ * \page bmi160_api_bmi160_get_sens_conf bmi160_get_sens_conf
+ * \code
+ * int8_t bmi160_get_sens_conf(struct bmi160_dev *dev);
+ * \endcode
+ * @details This API gets accel and gyro configurations.
+ *
+ * @param[out] dev    : Structure instance of bmi160_dev.
+ * @note : Refer user guide for detailed info.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_get_sens_conf(struct bmi160_dev* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiPowermode Power mode
+ * @brief Set / Get power mode of the sensor
+ */
+
+/*!
+ * \ingroup bmi160ApiPowermode
+ * \page bmi160_api_bmi160_set_power_mode bmi160_set_power_mode
+ * \code
+ * int8_t bmi160_set_power_mode(struct bmi160_dev *dev);
+ * \endcode
+ * @details This API sets the power mode of the sensor.
+ *
+ * @param[in] dev  : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_set_power_mode(struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiPowermode
+ * \page bmi160_api_bmi160_get_power_mode bmi160_get_power_mode
+ * \code
+ * int8_t bmi160_get_power_mode(struct bmi160_dev *dev);
+ * \endcode
+ * @details This API gets the power mode of the sensor.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_get_power_mode(struct bmi160_dev* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiData Sensor Data
+ * @brief Read sensor data
+ */
+
+/*!
+ * \ingroup bmi160ApiData
+ * \page bmi160_api_bmi160_get_sensor_data bmi160_get_sensor_data
+ * \code
+ * int8_t bmi160_get_sensor_data(uint8_t select_sensor,
+ *                             struct bmi160_sensor_data *accel,
+ *                             struct bmi160_sensor_data *gyro,
+ *                             const struct bmi160_dev *dev);
+ *
+ * \endcode
+ * @details This API reads sensor data, stores it in
+ * the bmi160_sensor_data structure pointer passed by the user.
+ * The user can ask for accel data ,gyro data or both sensor
+ * data using bmi160_select_sensor enum
+ *
+ * @param[in] select_sensor    : enum to choose accel,gyro or both sensor data
+ * @param[out] accel    : Structure pointer to store accel data
+ * @param[out] gyro     : Structure pointer to store gyro data
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ * @note : Refer user guide for detailed info.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_get_sensor_data(
+    uint8_t select_sensor,
+    struct bmi160_sensor_data* accel,
+    struct bmi160_sensor_data* gyro,
+    const struct bmi160_dev* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiInt Interrupt configuration
+ * @brief Set interrupt configuration of the sensor
+ */
+
+/*!
+ * \ingroup bmi160ApiInt
+ * \page bmi160_api_bmi160_set_int_config bmi160_set_int_config
+ * \code
+ * int8_t bmi160_set_int_config(struct bmi160_int_settg *int_config, struct bmi160_dev *dev);
+ * \endcode
+ * @details This API configures the necessary interrupt based on
+ *  the user settings in the bmi160_int_settg structure instance.
+ *
+ * @param[in] int_config  : Structure instance of bmi160_int_settg.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ * @note : Refer user guide for detailed info.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_set_int_config(struct bmi160_int_settg* int_config, struct bmi160_dev* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiStepC Step counter
+ * @brief Step counter operations
+ */
+
+/*!
+ * \ingroup bmi160ApiStepC
+ * \page bmi160_api_bmi160_set_step_counter bmi160_set_step_counter
+ * \code
+ * int8_t bmi160_set_step_counter(uint8_t step_cnt_enable, const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API enables the step counter feature.
+ *
+ * @param[in] step_cnt_enable   : value to enable or disable
+ * @param[in] dev       : Structure instance of bmi160_dev.
+ * @note : Refer user guide for detailed info.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_set_step_counter(uint8_t step_cnt_enable, const struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiStepC
+ * \page bmi160_api_bmi160_read_step_counter bmi160_read_step_counter
+ * \code
+ * int8_t bmi160_read_step_counter(uint16_t *step_val, const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API reads the step counter value.
+ *
+ * @param[in] step_val    : Pointer to store the step counter value.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ * @note : Refer user guide for detailed info.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_read_step_counter(uint16_t* step_val, const struct bmi160_dev* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiAux Auxiliary sensor
+ * @brief Auxiliary sensor operations
+ */
+
+/*!
+ * \ingroup bmi160ApiAux
+ * \page bmi160_api_bmi160_aux_read bmi160_aux_read
+ * \code
+ * int8_t bmi160_aux_read(uint8_t reg_addr, uint8_t *aux_data, uint16_t len, const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API reads the mention no of byte of data from the given
+ * register address of auxiliary sensor.
+ *
+ * @param[in] reg_addr    : Address of register to read.
+ * @param[in] aux_data    : Pointer to store the read data.
+ * @param[in] len     : No of bytes to read.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ * @note : Refer user guide for detailed info.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_aux_read(
+    uint8_t reg_addr,
+    uint8_t* aux_data,
+    uint16_t len,
+    const struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiAux
+ * \page bmi160_api_bmi160_aux_write bmi160_aux_write
+ * \code
+ * int8_t bmi160_aux_write(uint8_t reg_addr, uint8_t *aux_data, uint16_t len, const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API writes the mention no of byte of data to the given
+ * register address of auxiliary sensor.
+ *
+ * @param[in] reg_addr    : Address of register to write.
+ * @param[in] aux_data    : Pointer to write data.
+ * @param[in] len     : No of bytes to write.
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ * @note : Refer user guide for detailed info.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_aux_write(
+    uint8_t reg_addr,
+    uint8_t* aux_data,
+    uint16_t len,
+    const struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiAux
+ * \page bmi160_api_bmi160_aux_init bmi160_aux_init
+ * \code
+ * int8_t bmi160_aux_init(const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API initialize the auxiliary sensor
+ * in order to access it.
+ *
+ * @param[in] dev         : Structure instance of bmi160_dev.
+ * @note : Refer user guide for detailed info.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_aux_init(const struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiAux
+ * \page bmi160_api_bmi160_set_aux_auto_mode bmi160_set_aux_auto_mode
+ * \code
+ * int8_t bmi160_set_aux_auto_mode(uint8_t *data_addr, struct bmi160_dev *dev);
+ * \endcode
+ * @details This API is used to setup the auxiliary sensor of bmi160 in auto mode
+ * Thus enabling the auto update of 8 bytes of data from auxiliary sensor
+ * to BMI160 register address 0x04 to 0x0B
+ *
+ * @param[in] data_addr    : Starting address of aux. sensor's data register
+ *                           (BMI160 registers 0x04 to 0x0B will be updated
+ *                           with 8 bytes of data from auxiliary sensor
+ *                           starting from this register address.)
+ * @param[in] dev      : Structure instance of bmi160_dev.
+ *
+ * @note : Set the value of auxiliary polling rate by setting
+ *         dev->aux_cfg.aux_odr to the required value from the table
+ *         before calling this API
+ *
+ *@verbatim
+ *   dev->aux_cfg.aux_odr  |   Auxiliary ODR (Hz)
+ *  -----------------------|-----------------------
+ *  BMI160_AUX_ODR_0_78HZ  |        25/32
+ *  BMI160_AUX_ODR_1_56HZ  |        25/16
+ *  BMI160_AUX_ODR_3_12HZ  |        25/8
+ *  BMI160_AUX_ODR_6_25HZ  |        25/4
+ *  BMI160_AUX_ODR_12_5HZ  |        25/2
+ *  BMI160_AUX_ODR_25HZ    |        25
+ *  BMI160_AUX_ODR_50HZ    |        50
+ *  BMI160_AUX_ODR_100HZ   |        100
+ *  BMI160_AUX_ODR_200HZ   |        200
+ *  BMI160_AUX_ODR_400HZ   |        400
+ *  BMI160_AUX_ODR_800HZ   |        800
+ *@endverbatim
+ *
+ * @note : Other values of  dev->aux_cfg.aux_odr are reserved and not for use
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_set_aux_auto_mode(uint8_t* data_addr, struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiAux
+ * \page bmi160_api_bmi160_config_aux_mode bmi160_config_aux_mode
+ * \code
+ * int8_t bmi160_config_aux_mode(const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API configures the 0x4C register and settings like
+ * Auxiliary sensor manual enable/ disable and aux burst read length.
+ *
+ * @param[in] dev    : Structure instance of bmi160_dev.
+ *
+ * @return Result of API execution status
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_config_aux_mode(const struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiAux
+ * \page bmi160_api_bmi160_read_aux_data_auto_mode bmi160_read_aux_data_auto_mode
+ * \code
+ * int8_t bmi160_read_aux_data_auto_mode(uint8_t *aux_data, const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API is used to read the raw uncompensated auxiliary sensor
+ * data of 8 bytes from BMI160 register address 0x04 to 0x0B
+ *
+ * @param[in] aux_data       : Pointer to user array of length 8 bytes
+ *                             Ensure that the aux_data array is of
+ *                             length 8 bytes
+ * @param[in] dev        : Structure instance of bmi160_dev
+ *
+ * @retval zero -> Success  / -ve value -> Error
+ * @retval Zero Success
+ * @retval Negative Error
+ */
+int8_t bmi160_read_aux_data_auto_mode(uint8_t* aux_data, const struct bmi160_dev* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiSelfTest Self test
+ * @brief Perform self test of the sensor
+ */
+
+/*!
+ * \ingroup bmi160ApiSelfTest
+ * \page bmi160_api_bmi160_perform_self_test bmi160_perform_self_test
+ * \code
+ * int8_t bmi160_perform_self_test(uint8_t select_sensor, struct bmi160_dev *dev);
+ * \endcode
+ * @details This is used to perform self test of accel/gyro of the BMI160 sensor
+ *
+ * @param[in] select_sensor  : enum to choose accel or gyro for self test
+ * @param[in] dev            : Structure instance of bmi160_dev
+ *
+ * @note self test can be performed either for accel/gyro at any instant.
+ *
+ *@verbatim
+ *     value of select_sensor       |  Inference
+ *----------------------------------|--------------------------------
+ *   BMI160_ACCEL_ONLY              | Accel self test enabled
+ *   BMI160_GYRO_ONLY               | Gyro self test enabled
+ *   BMI160_BOTH_ACCEL_AND_GYRO     | NOT TO BE USED
+ *@endverbatim
+ *
+ * @note The return value of this API gives us the result of self test.
+ *
+ * @note Performing self test does soft reset of the sensor, User can
+ * set the desired settings after performing the self test.
+ *
+ * @return Result of API execution status
+ * @retval  BMI160_OK                       Self test success
+ * @retval  BMI160_W_GYRO_SELF_TEST_FAIL    Gyro self test fail
+ * @retval  BMI160_W_ACCEl_SELF_TEST_FAIL   Accel self test fail
+ */
+int8_t bmi160_perform_self_test(uint8_t select_sensor, struct bmi160_dev* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiFIFO FIFO
+ * @brief FIFO operations of the sensor
+ */
+
+/*!
+ * \ingroup bmi160ApiFIFO
+ * \page bmi160_api_bmi160_get_fifo_data bmi160_get_fifo_data
+ * \code
+ * int8_t bmi160_get_fifo_data(struct bmi160_dev const *dev);
+ * \endcode
+ * @details This API reads data from the fifo buffer.
+ *
+ *  @note User has to allocate the FIFO buffer along with
+ *  corresponding fifo length from his side before calling this API
+ *  as mentioned in the readme.md
+ *
+ *  @note User must specify the number of bytes to read from the FIFO in
+ *  dev->fifo->length , It will be updated by the number of bytes actually
+ *  read from FIFO after calling this API
+ *
+ *  @param[in] dev     : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval Zero Success
+ *  @retval Negative Error
+ */
+int8_t bmi160_get_fifo_data(struct bmi160_dev const* dev);
+
+/*!
+ * \ingroup bmi160ApiFIFO
+ * \page bmi160_api_bmi160_set_fifo_flush bmi160_set_fifo_flush
+ * \code
+ * int8_t bmi160_set_fifo_flush(const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API writes fifo_flush command to command register.This
+ *  action clears all data in the Fifo without changing fifo configuration
+ *  settings.
+ *
+ *  @param[in] dev     : Structure instance of bmi160_dev
+ *
+ *  @return Result of API execution status
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ *
+ */
+int8_t bmi160_set_fifo_flush(const struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiFIFO
+ * \page bmi160_api_bmi160_set_fifo_config bmi160_set_fifo_config
+ * \code
+ * int8_t bmi160_set_fifo_config(uint8_t config, uint8_t enable, struct bmi160_dev const *dev);
+ * \endcode
+ * @details This API sets the FIFO configuration in the sensor.
+ *
+ *  @param[in] config : variable used to specify the FIFO
+ *  configurations which are to be enabled or disabled in the sensor.
+ *
+ *  @note : User can set either set one or more or all FIFO configurations
+ *  by ORing the below mentioned macros.
+ *
+ *@verbatim
+ *      config                  |   Value
+ *      ------------------------|---------------------------
+ *      BMI160_FIFO_TIME        |   0x02
+ *      BMI160_FIFO_TAG_INT2    |   0x04
+ *      BMI160_FIFO_TAG_INT1    |   0x08
+ *      BMI160_FIFO_HEADER      |   0x10
+ *      BMI160_FIFO_AUX         |   0x20
+ *      BMI160_FIFO_ACCEL       |   0x40
+ *      BMI160_FIFO_GYRO        |   0x80
+ *@endverbatim
+ *
+ *  @param[in] enable : Parameter used to enable or disable the above
+ *  FIFO configuration
+ *  @param[in] dev : Structure instance of bmi160_dev.
+ *
+ *  @return status of bus communication result
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ *
+ */
+int8_t bmi160_set_fifo_config(uint8_t config, uint8_t enable, struct bmi160_dev const* dev);
+
+/*!
+ * \ingroup bmi160ApiFIFO
+ * \page bmi160_api_bmi160_set_fifo_down bmi160_set_fifo_down
+ * \code
+ * int8_t bmi160_set_fifo_down(uint8_t fifo_down, const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API is used to configure the down sampling ratios of
+ *  the accel and gyro data for FIFO.Also, it configures filtered or
+ *  pre-filtered data for the fifo for accel and gyro.
+ *
+ *  @param[in] fifo_down : variable used to specify the FIFO down
+ *  configurations which are to be enabled or disabled in the sensor.
+ *
+ *  @note The user must select one among the following macros to
+ *  select down-sampling ratio for accel
+ *
+ *@verbatim
+ *      config                               |   Value
+ *      -------------------------------------|---------------------------
+ *      BMI160_ACCEL_FIFO_DOWN_ZERO          |   0x00
+ *      BMI160_ACCEL_FIFO_DOWN_ONE           |   0x10
+ *      BMI160_ACCEL_FIFO_DOWN_TWO           |   0x20
+ *      BMI160_ACCEL_FIFO_DOWN_THREE         |   0x30
+ *      BMI160_ACCEL_FIFO_DOWN_FOUR          |   0x40
+ *      BMI160_ACCEL_FIFO_DOWN_FIVE          |   0x50
+ *      BMI160_ACCEL_FIFO_DOWN_SIX           |   0x60
+ *      BMI160_ACCEL_FIFO_DOWN_SEVEN         |   0x70
+ *@endverbatim
+ *
+ *  @note The user must select one among the following macros to
+ *  select down-sampling ratio for gyro
+ *
+ *@verbatim
+ *      config                               |   Value
+ *      -------------------------------------|---------------------------
+ *      BMI160_GYRO_FIFO_DOWN_ZERO           |   0x00
+ *      BMI160_GYRO_FIFO_DOWN_ONE            |   0x01
+ *      BMI160_GYRO_FIFO_DOWN_TWO            |   0x02
+ *      BMI160_GYRO_FIFO_DOWN_THREE          |   0x03
+ *      BMI160_GYRO_FIFO_DOWN_FOUR           |   0x04
+ *      BMI160_GYRO_FIFO_DOWN_FIVE           |   0x05
+ *      BMI160_GYRO_FIFO_DOWN_SIX            |   0x06
+ *      BMI160_GYRO_FIFO_DOWN_SEVEN          |   0x07
+ *@endverbatim
+ *
+ *  @note The user can enable filtered accel data by the following macro
+ *
+ *@verbatim
+ *      config                               |   Value
+ *      -------------------------------------|---------------------------
+ *      BMI160_ACCEL_FIFO_FILT_EN            |   0x80
+ *@endverbatim
+ *
+ *  @note The user can enable filtered gyro data by the following macro
+ *
+ *@verbatim
+ *      config                               |   Value
+ *      -------------------------------------|---------------------------
+ *      BMI160_GYRO_FIFO_FILT_EN             |   0x08
+ *@endverbatim
+ *
+ *  @note : By ORing the above mentioned macros, the user can select
+ *  the required FIFO down config settings
+ *
+ *  @param[in] dev : Structure instance of bmi160_dev.
+ *
+ *  @return status of bus communication result
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ *
+ */
+int8_t bmi160_set_fifo_down(uint8_t fifo_down, const struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiFIFO
+ * \page bmi160_api_bmi160_set_fifo_wm bmi160_set_fifo_wm
+ * \code
+ * int8_t bmi160_set_fifo_wm(uint8_t fifo_wm, const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API sets the FIFO watermark level in the sensor.
+ *
+ *  @note The FIFO watermark is issued when the FIFO fill level is
+ *  equal or above the watermark level and units of watermark is 4 bytes.
+ *
+ *  @param[in]  fifo_wm        : Variable used to set the FIFO water mark level
+ *  @param[in]  dev            : Structure instance of bmi160_dev
+ *
+ *  @return Result of API execution status
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ *
+ */
+int8_t bmi160_set_fifo_wm(uint8_t fifo_wm, const struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiFIFO
+ * \page bmi160_api_bmi160_extract_accel bmi160_extract_accel
+ * \code
+ * int8_t bmi160_extract_accel(struct bmi160_sensor_data *accel_data, uint8_t *accel_length, struct bmi160_dev const
+ **dev);
+ * \endcode
+ * @details This API parses and extracts the accelerometer frames from
+ *  FIFO data read by the "bmi160_get_fifo_data" API and stores it in
+ *  the "accel_data" structure instance.
+ *
+ *  @note The bmi160_extract_accel API should be called only after
+ *  reading the FIFO data by calling the bmi160_get_fifo_data() API.
+ *
+ *  @param[out] accel_data    : Structure instance of bmi160_sensor_data
+ *                              where the accelerometer data in FIFO is stored.
+ *  @param[in,out] accel_length  : Number of valid accelerometer frames
+ *                              (x,y,z axes data) read out from fifo.
+ *  @param[in] dev            : Structure instance of bmi160_dev.
+ *
+ *  @note accel_length is updated with the number of valid accelerometer
+ *  frames extracted from fifo (1 accel frame   = 6 bytes) at the end of
+ *  execution of this API.
+ *
+ *  @return Result of API execution status
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ *
+ */
+int8_t bmi160_extract_accel(
+    struct bmi160_sensor_data* accel_data,
+    uint8_t* accel_length,
+    struct bmi160_dev const* dev);
+
+/*!
+ * \ingroup bmi160ApiFIFO
+ * \page bmi160_api_bmi160_extract_gyro bmi160_extract_gyro
+ * \code
+ * int8_t bmi160_extract_gyro(struct bmi160_sensor_data *gyro_data, uint8_t *gyro_length, struct bmi160_dev const *dev);
+ * \endcode
+ * @details This API parses and extracts the gyro frames from
+ *  FIFO data read by the "bmi160_get_fifo_data" API and stores it in
+ *  the "gyro_data" structure instance.
+ *
+ *  @note The bmi160_extract_gyro API should be called only after
+ *  reading the FIFO data by calling the bmi160_get_fifo_data() API.
+ *
+ *  @param[out] gyro_data    : Structure instance of bmi160_sensor_data
+ *                             where the gyro data in FIFO is stored.
+ *  @param[in,out] gyro_length  : Number of valid gyro frames
+ *                             (x,y,z axes data) read out from fifo.
+ *  @param[in] dev           : Structure instance of bmi160_dev.
+ *
+ *  @note gyro_length is updated with the number of valid gyro
+ *  frames extracted from fifo (1 gyro frame   = 6 bytes) at the end of
+ *  execution of this API.
+ *
+ *  @return Result of API execution status
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ *
+ */
+int8_t bmi160_extract_gyro(
+    struct bmi160_sensor_data* gyro_data,
+    uint8_t* gyro_length,
+    struct bmi160_dev const* dev);
+
+/*!
+ * \ingroup bmi160ApiFIFO
+ * \page bmi160_api_bmi160_extract_aux bmi160_extract_aux
+ * \code
+ * int8_t bmi160_extract_aux(struct bmi160_aux_data *aux_data, uint8_t *aux_len, struct bmi160_dev const *dev);
+ * \endcode
+ * @details This API parses and extracts the aux frames from
+ *  FIFO data read by the "bmi160_get_fifo_data" API and stores it in
+ *  the bmi160_aux_data structure instance.
+ *
+ *  @note The bmi160_extract_aux API should be called only after
+ *  reading the FIFO data by calling the bmi160_get_fifo_data() API.
+ *
+ *  @param[out] aux_data    : Structure instance of bmi160_aux_data
+ *                            where the aux data in FIFO is stored.
+ *  @param[in,out] aux_len  : Number of valid aux frames (8bytes)
+ *                            read out from FIFO.
+ *  @param[in] dev          : Structure instance of bmi160_dev.
+ *
+ *  @note aux_len is updated with the number of valid aux
+ *  frames extracted from fifo (1 aux frame = 8 bytes) at the end of
+ *  execution of this API.
+ *
+ *  @return Result of API execution status
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ *
+ */
+int8_t bmi160_extract_aux(
+    struct bmi160_aux_data* aux_data,
+    uint8_t* aux_len,
+    struct bmi160_dev const* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiFOC FOC
+ * @brief Start FOC of accel and gyro sensors
+ */
+
+/*!
+ * \ingroup bmi160ApiFOC
+ * \page bmi160_api_bmi160_start_foc bmi160_start_foc
+ * \code
+ * int8_t bmi160_start_foc(const struct bmi160_foc_conf *foc_conf,
+ * \endcode
+ * @details This API starts the FOC of accel and gyro
+ *
+ *  @note FOC should not be used in low-power mode of sensor
+ *
+ *  @note Accel FOC targets values of +1g , 0g , -1g
+ *  Gyro FOC always targets value of 0 dps
+ *
+ *  @param[in] foc_conf    : Structure instance of bmi160_foc_conf which
+ *                                   has the FOC configuration
+ *  @param[in,out] offset  : Structure instance to store Offset
+ *                                   values read from sensor
+ *  @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ *  @note Pre-requisites for triggering FOC in accel , Set the following,
+ *   Enable the acc_off_en
+ *       Ex :  foc_conf.acc_off_en = BMI160_ENABLE;
+ *
+ *   Set the desired target values of FOC to each axes (x,y,z) by using the
+ *   following macros
+ *       - BMI160_FOC_ACCEL_DISABLED
+ *       - BMI160_FOC_ACCEL_POSITIVE_G
+ *       - BMI160_FOC_ACCEL_NEGATIVE_G
+ *       - BMI160_FOC_ACCEL_0G
+ *
+ *   Ex : foc_conf.foc_acc_x  = BMI160_FOC_ACCEL_0G;
+ *        foc_conf.foc_acc_y  = BMI160_FOC_ACCEL_0G;
+ *        foc_conf.foc_acc_z  = BMI160_FOC_ACCEL_POSITIVE_G;
+ *
+ *  @note Pre-requisites for triggering FOC in gyro ,
+ *  Set the following parameters,
+ *
+ *   Ex : foc_conf.foc_gyr_en = BMI160_ENABLE;
+ *        foc_conf.gyro_off_en = BMI160_ENABLE;
+ *
+ *  @return Result of API execution status
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ */
+int8_t bmi160_start_foc(
+    const struct bmi160_foc_conf* foc_conf,
+    struct bmi160_offsets* offset,
+    struct bmi160_dev const* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiOffsets Offsets
+ * @brief Set / Get offset values of accel and gyro sensors
+ */
+
+/*!
+ * \ingroup bmi160ApiOffsets
+ * \page bmi160_api_bmi160_get_offsets bmi160_get_offsets
+ * \code
+ * int8_t bmi160_get_offsets(struct bmi160_offsets *offset, const struct bmi160_dev *dev);
+ * \endcode
+ * @details This API reads and stores the offset values of accel and gyro
+ *
+ *  @param[in,out] offset : Structure instance of bmi160_offsets in which
+ *                          the offset values are read and stored
+ *  @param[in] dev        : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ */
+int8_t bmi160_get_offsets(struct bmi160_offsets* offset, const struct bmi160_dev* dev);
+
+/*!
+ * \ingroup bmi160ApiOffsets
+ * \page bmi160_api_bmi160_set_offsets bmi160_set_offsets
+ * \code
+ * int8_t bmi160_set_offsets(const struct bmi160_foc_conf *foc_conf,
+ *                         const struct bmi160_offsets *offset,
+ *                         struct bmi160_dev const *dev);
+ * \endcode
+ * @details This API writes the offset values of accel and gyro to
+ *  the sensor but these values will be reset on POR or soft reset.
+ *
+ *  @param[in] foc_conf    : Structure instance of bmi160_foc_conf which
+ *                                   has the FOC configuration
+ *  @param[in] offset      : Structure instance in which user updates offset
+ *                            values which are to be written in the sensor
+ *  @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ *  @note Offsets can be set by user like offset->off_acc_x = 10;
+ *  where 1LSB = 3.9mg and for gyro 1LSB = 0.061degrees/second
+ *
+ * @note BMI160 offset values for xyz axes of accel should be within range of
+ *  BMI160_ACCEL_MIN_OFFSET (-128) to BMI160_ACCEL_MAX_OFFSET (127)
+ *
+ * @note BMI160 offset values for xyz axes of gyro should be within range of
+ *  BMI160_GYRO_MIN_OFFSET (-512) to BMI160_GYRO_MAX_OFFSET (511)
+ *
+ *  @return Result of API execution status
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ */
+int8_t bmi160_set_offsets(
+    const struct bmi160_foc_conf* foc_conf,
+    const struct bmi160_offsets* offset,
+    struct bmi160_dev const* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiNVM NVM
+ * @brief Write image registers values to NVM
+ */
+
+/*!
+ * \ingroup bmi160ApiNVM
+ * \page bmi160_api_bmi160_update_nvm bmi160_update_nvm
+ * \code
+ * int8_t bmi160_update_nvm(struct bmi160_dev const *dev);
+ * \endcode
+ * @details This API writes the image registers values to NVM which is
+ *  stored even after POR or soft reset
+ *
+ *  @param[in] dev         : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ */
+int8_t bmi160_update_nvm(struct bmi160_dev const* dev);
+
+/**
+ * \ingroup bmi160
+ * \defgroup bmi160ApiInts Interrupt status
+ * @brief Read interrupt status from the sensor
+ */
+
+/*!
+ * \ingroup bmi160ApiInts
+ * \page bmi160_api_bmi160_get_int_status bmi160_get_int_status
+ * \code
+ * int8_t bmi160_get_int_status(enum bmi160_int_status_sel int_status_sel,
+ *                            union bmi160_int_status *int_status,
+ *                            struct bmi160_dev const *dev);
+ * \endcode
+ * @details This API gets the interrupt status from the sensor.
+ *
+ *  @param[in] int_status_sel       : Enum variable to select either individual or all the
+ *  interrupt status bits.
+ *  @param[in] int_status           : pointer variable to get the interrupt status
+ *  from the sensor.
+ *  param[in] dev                   : Structure instance of bmi160_dev.
+ *
+ *  @return Result of API execution status
+ *  @retval 0 -> Success
+ *  @retval Any non zero value -> Fail
+ */
+int8_t bmi160_get_int_status(
+    enum bmi160_int_status_sel int_status_sel,
+    union bmi160_int_status* int_status,
+    struct bmi160_dev const* dev);
+
+/*************************** C++ guard macro *****************************/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BMI160_H_ */

+ 1619 - 0
airmouse/tracking/imu/bmi160_defs.h

@@ -0,0 +1,1619 @@
+/**
+* Copyright (c) 2021 Bosch Sensortec GmbH. All rights reserved.
+*
+* BSD-3-Clause
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are met:
+*
+* 1. Redistributions of source code must retain the above copyright
+*    notice, this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright
+*    notice, this list of conditions and the following disclaimer in the
+*    documentation and/or other materials provided with the distribution.
+*
+* 3. Neither the name of the copyright holder nor the names of its
+*    contributors may be used to endorse or promote products derived from
+*    this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+* POSSIBILITY OF SUCH DAMAGE.
+*
+* @file       bmi160_defs.h
+* @date       2021-10-05
+* @version    v3.9.2
+*
+*/
+
+#ifndef BMI160_DEFS_H_
+#define BMI160_DEFS_H_
+
+/*************************** C types headers *****************************/
+#ifdef __KERNEL__
+#include <linux/types.h>
+#include <linux/kernel.h>
+#else
+#include <stdint.h>
+#include <stddef.h>
+#endif
+
+/*************************** Common macros   *****************************/
+
+#if !defined(UINT8_C) && !defined(INT8_C)
+#define INT8_C(x) S8_C(x)
+#define UINT8_C(x) U8_C(x)
+#endif
+
+#if !defined(UINT16_C) && !defined(INT16_C)
+#define INT16_C(x) S16_C(x)
+#define UINT16_C(x) U16_C(x)
+#endif
+
+#if !defined(INT32_C) && !defined(UINT32_C)
+#define INT32_C(x) S32_C(x)
+#define UINT32_C(x) U32_C(x)
+#endif
+
+#if !defined(INT64_C) && !defined(UINT64_C)
+#define INT64_C(x) S64_C(x)
+#define UINT64_C(x) U64_C(x)
+#endif
+
+/**@}*/
+/**\name C standard macros */
+#ifndef NULL
+#ifdef __cplusplus
+#define NULL 0
+#else
+#define NULL ((void*)0)
+#endif
+#endif
+
+/*************************** Sensor macros   *****************************/
+/* Test for an endian machine */
+#ifndef __ORDER_LITTLE_ENDIAN__
+#define __ORDER_LITTLE_ENDIAN__ 0
+#endif
+
+#ifndef __BYTE_ORDER__
+#define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__
+#endif
+
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#ifndef LITTLE_ENDIAN
+#define LITTLE_ENDIAN 1
+#endif
+#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#ifndef BIG_ENDIAN
+#define BIG_ENDIAN 1
+#endif
+#else
+#error "Code does not support Endian format of the processor"
+#endif
+
+/** Mask definitions */
+#define BMI160_ACCEL_BW_MASK UINT8_C(0x70)
+#define BMI160_ACCEL_ODR_MASK UINT8_C(0x0F)
+#define BMI160_ACCEL_UNDERSAMPLING_MASK UINT8_C(0x80)
+#define BMI160_ACCEL_RANGE_MASK UINT8_C(0x0F)
+#define BMI160_GYRO_BW_MASK UINT8_C(0x30)
+#define BMI160_GYRO_ODR_MASK UINT8_C(0x0F)
+#define BMI160_GYRO_RANGE_MASK UINT8_C(0x07)
+
+#define BMI160_ACCEL_BW_POS UINT8_C(4)
+#define BMI160_GYRO_BW_POS UINT8_C(4)
+
+/** Mask definitions for INT_EN registers */
+#define BMI160_ANY_MOTION_X_INT_EN_MASK UINT8_C(0x01)
+#define BMI160_HIGH_G_X_INT_EN_MASK UINT8_C(0x01)
+#define BMI160_NO_MOTION_X_INT_EN_MASK UINT8_C(0x01)
+#define BMI160_ANY_MOTION_Y_INT_EN_MASK UINT8_C(0x02)
+#define BMI160_HIGH_G_Y_INT_EN_MASK UINT8_C(0x02)
+#define BMI160_NO_MOTION_Y_INT_EN_MASK UINT8_C(0x02)
+#define BMI160_ANY_MOTION_Z_INT_EN_MASK UINT8_C(0x04)
+#define BMI160_HIGH_G_Z_INT_EN_MASK UINT8_C(0x04)
+#define BMI160_NO_MOTION_Z_INT_EN_MASK UINT8_C(0x04)
+#define BMI160_SIG_MOTION_INT_EN_MASK UINT8_C(0x07)
+#define BMI160_ANY_MOTION_ALL_INT_EN_MASK UINT8_C(0x07)
+#define BMI160_STEP_DETECT_INT_EN_MASK UINT8_C(0x08)
+#define BMI160_DOUBLE_TAP_INT_EN_MASK UINT8_C(0x10)
+#define BMI160_SINGLE_TAP_INT_EN_MASK UINT8_C(0x20)
+#define BMI160_FIFO_FULL_INT_EN_MASK UINT8_C(0x20)
+#define BMI160_ORIENT_INT_EN_MASK UINT8_C(0x40)
+#define BMI160_FIFO_WATERMARK_INT_EN_MASK UINT8_C(0x40)
+#define BMI160_LOW_G_INT_EN_MASK UINT8_C(0x08)
+#define BMI160_STEP_DETECT_EN_MASK UINT8_C(0x08)
+#define BMI160_FLAT_INT_EN_MASK UINT8_C(0x80)
+#define BMI160_DATA_RDY_INT_EN_MASK UINT8_C(0x10)
+
+/** PMU status Macros */
+#define BMI160_AUX_PMU_SUSPEND UINT8_C(0x00)
+#define BMI160_AUX_PMU_NORMAL UINT8_C(0x01)
+#define BMI160_AUX_PMU_LOW_POWER UINT8_C(0x02)
+
+#define BMI160_GYRO_PMU_SUSPEND UINT8_C(0x00)
+#define BMI160_GYRO_PMU_NORMAL UINT8_C(0x01)
+#define BMI160_GYRO_PMU_FSU UINT8_C(0x03)
+
+#define BMI160_ACCEL_PMU_SUSPEND UINT8_C(0x00)
+#define BMI160_ACCEL_PMU_NORMAL UINT8_C(0x01)
+#define BMI160_ACCEL_PMU_LOW_POWER UINT8_C(0x02)
+
+/** Mask definitions for INT_OUT_CTRL register */
+#define BMI160_INT1_EDGE_CTRL_MASK UINT8_C(0x01)
+#define BMI160_INT1_OUTPUT_MODE_MASK UINT8_C(0x04)
+#define BMI160_INT1_OUTPUT_TYPE_MASK UINT8_C(0x02)
+#define BMI160_INT1_OUTPUT_EN_MASK UINT8_C(0x08)
+#define BMI160_INT2_EDGE_CTRL_MASK UINT8_C(0x10)
+#define BMI160_INT2_OUTPUT_MODE_MASK UINT8_C(0x40)
+#define BMI160_INT2_OUTPUT_TYPE_MASK UINT8_C(0x20)
+#define BMI160_INT2_OUTPUT_EN_MASK UINT8_C(0x80)
+
+/** Mask definitions for INT_LATCH register */
+#define BMI160_INT1_INPUT_EN_MASK UINT8_C(0x10)
+#define BMI160_INT2_INPUT_EN_MASK UINT8_C(0x20)
+#define BMI160_INT_LATCH_MASK UINT8_C(0x0F)
+
+/** Mask definitions for INT_MAP register */
+#define BMI160_INT1_LOW_G_MASK UINT8_C(0x01)
+#define BMI160_INT1_HIGH_G_MASK UINT8_C(0x02)
+#define BMI160_INT1_SLOPE_MASK UINT8_C(0x04)
+#define BMI160_INT1_NO_MOTION_MASK UINT8_C(0x08)
+#define BMI160_INT1_DOUBLE_TAP_MASK UINT8_C(0x10)
+#define BMI160_INT1_SINGLE_TAP_MASK UINT8_C(0x20)
+#define BMI160_INT1_FIFO_FULL_MASK UINT8_C(0x20)
+#define BMI160_INT1_FIFO_WM_MASK UINT8_C(0x40)
+#define BMI160_INT1_ORIENT_MASK UINT8_C(0x40)
+#define BMI160_INT1_FLAT_MASK UINT8_C(0x80)
+#define BMI160_INT1_DATA_READY_MASK UINT8_C(0x80)
+#define BMI160_INT2_LOW_G_MASK UINT8_C(0x01)
+#define BMI160_INT1_LOW_STEP_DETECT_MASK UINT8_C(0x01)
+#define BMI160_INT2_LOW_STEP_DETECT_MASK UINT8_C(0x01)
+#define BMI160_INT2_HIGH_G_MASK UINT8_C(0x02)
+#define BMI160_INT2_FIFO_FULL_MASK UINT8_C(0x02)
+#define BMI160_INT2_FIFO_WM_MASK UINT8_C(0x04)
+#define BMI160_INT2_SLOPE_MASK UINT8_C(0x04)
+#define BMI160_INT2_DATA_READY_MASK UINT8_C(0x08)
+#define BMI160_INT2_NO_MOTION_MASK UINT8_C(0x08)
+#define BMI160_INT2_DOUBLE_TAP_MASK UINT8_C(0x10)
+#define BMI160_INT2_SINGLE_TAP_MASK UINT8_C(0x20)
+#define BMI160_INT2_ORIENT_MASK UINT8_C(0x40)
+#define BMI160_INT2_FLAT_MASK UINT8_C(0x80)
+
+/** Mask definitions for INT_DATA register */
+#define BMI160_TAP_SRC_INT_MASK UINT8_C(0x08)
+#define BMI160_LOW_HIGH_SRC_INT_MASK UINT8_C(0x80)
+#define BMI160_MOTION_SRC_INT_MASK UINT8_C(0x80)
+
+/** Mask definitions for INT_MOTION register */
+#define BMI160_SLOPE_INT_DUR_MASK UINT8_C(0x03)
+#define BMI160_NO_MOTION_INT_DUR_MASK UINT8_C(0xFC)
+#define BMI160_NO_MOTION_SEL_BIT_MASK UINT8_C(0x01)
+
+/** Mask definitions for INT_TAP register */
+#define BMI160_TAP_DUR_MASK UINT8_C(0x07)
+#define BMI160_TAP_SHOCK_DUR_MASK UINT8_C(0x40)
+#define BMI160_TAP_QUIET_DUR_MASK UINT8_C(0x80)
+#define BMI160_TAP_THRES_MASK UINT8_C(0x1F)
+
+/** Mask definitions for INT_FLAT register */
+#define BMI160_FLAT_THRES_MASK UINT8_C(0x3F)
+#define BMI160_FLAT_HOLD_TIME_MASK UINT8_C(0x30)
+#define BMI160_FLAT_HYST_MASK UINT8_C(0x07)
+
+/** Mask definitions for INT_LOWHIGH register */
+#define BMI160_LOW_G_HYST_MASK UINT8_C(0x03)
+#define BMI160_LOW_G_LOW_MODE_MASK UINT8_C(0x04)
+#define BMI160_HIGH_G_HYST_MASK UINT8_C(0xC0)
+
+/** Mask definitions for INT_SIG_MOTION register */
+#define BMI160_SIG_MOTION_SEL_MASK UINT8_C(0x02)
+#define BMI160_SIG_MOTION_SKIP_MASK UINT8_C(0x0C)
+#define BMI160_SIG_MOTION_PROOF_MASK UINT8_C(0x30)
+
+/** Mask definitions for INT_ORIENT register */
+#define BMI160_ORIENT_MODE_MASK UINT8_C(0x03)
+#define BMI160_ORIENT_BLOCK_MASK UINT8_C(0x0C)
+#define BMI160_ORIENT_HYST_MASK UINT8_C(0xF0)
+#define BMI160_ORIENT_THETA_MASK UINT8_C(0x3F)
+#define BMI160_ORIENT_UD_ENABLE UINT8_C(0x40)
+#define BMI160_AXES_EN_MASK UINT8_C(0x80)
+
+/** Mask definitions for FIFO_CONFIG register */
+#define BMI160_FIFO_GYRO UINT8_C(0x80)
+#define BMI160_FIFO_ACCEL UINT8_C(0x40)
+#define BMI160_FIFO_AUX UINT8_C(0x20)
+#define BMI160_FIFO_TAG_INT1 UINT8_C(0x08)
+#define BMI160_FIFO_TAG_INT2 UINT8_C(0x04)
+#define BMI160_FIFO_TIME UINT8_C(0x02)
+#define BMI160_FIFO_HEADER UINT8_C(0x10)
+#define BMI160_FIFO_CONFIG_1_MASK UINT8_C(0xFE)
+
+/** Mask definitions for STEP_CONF register */
+#define BMI160_STEP_COUNT_EN_BIT_MASK UINT8_C(0x08)
+#define BMI160_STEP_DETECT_MIN_THRES_MASK UINT8_C(0x18)
+#define BMI160_STEP_DETECT_STEPTIME_MIN_MASK UINT8_C(0x07)
+#define BMI160_STEP_MIN_BUF_MASK UINT8_C(0x07)
+
+/** Mask definition for FIFO Header Data Tag */
+#define BMI160_FIFO_TAG_INTR_MASK UINT8_C(0xFC)
+
+/** Fifo byte counter mask definitions */
+#define BMI160_FIFO_BYTE_COUNTER_MASK UINT8_C(0x07)
+
+/** Enable/disable bit value */
+#define BMI160_ENABLE UINT8_C(0x01)
+#define BMI160_DISABLE UINT8_C(0x00)
+
+/** Latch Duration */
+#define BMI160_LATCH_DUR_NONE UINT8_C(0x00)
+#define BMI160_LATCH_DUR_312_5_MICRO_SEC UINT8_C(0x01)
+#define BMI160_LATCH_DUR_625_MICRO_SEC UINT8_C(0x02)
+#define BMI160_LATCH_DUR_1_25_MILLI_SEC UINT8_C(0x03)
+#define BMI160_LATCH_DUR_2_5_MILLI_SEC UINT8_C(0x04)
+#define BMI160_LATCH_DUR_5_MILLI_SEC UINT8_C(0x05)
+#define BMI160_LATCH_DUR_10_MILLI_SEC UINT8_C(0x06)
+#define BMI160_LATCH_DUR_20_MILLI_SEC UINT8_C(0x07)
+#define BMI160_LATCH_DUR_40_MILLI_SEC UINT8_C(0x08)
+#define BMI160_LATCH_DUR_80_MILLI_SEC UINT8_C(0x09)
+#define BMI160_LATCH_DUR_160_MILLI_SEC UINT8_C(0x0A)
+#define BMI160_LATCH_DUR_320_MILLI_SEC UINT8_C(0x0B)
+#define BMI160_LATCH_DUR_640_MILLI_SEC UINT8_C(0x0C)
+#define BMI160_LATCH_DUR_1_28_SEC UINT8_C(0x0D)
+#define BMI160_LATCH_DUR_2_56_SEC UINT8_C(0x0E)
+#define BMI160_LATCHED UINT8_C(0x0F)
+
+/** BMI160 Register map */
+#define BMI160_CHIP_ID_ADDR UINT8_C(0x00)
+#define BMI160_ERROR_REG_ADDR UINT8_C(0x02)
+#define BMI160_PMU_STATUS_ADDR UINT8_C(0x03)
+#define BMI160_AUX_DATA_ADDR UINT8_C(0x04)
+#define BMI160_GYRO_DATA_ADDR UINT8_C(0x0C)
+#define BMI160_ACCEL_DATA_ADDR UINT8_C(0x12)
+#define BMI160_STATUS_ADDR UINT8_C(0x1B)
+#define BMI160_INT_STATUS_ADDR UINT8_C(0x1C)
+#define BMI160_FIFO_LENGTH_ADDR UINT8_C(0x22)
+#define BMI160_FIFO_DATA_ADDR UINT8_C(0x24)
+#define BMI160_ACCEL_CONFIG_ADDR UINT8_C(0x40)
+#define BMI160_ACCEL_RANGE_ADDR UINT8_C(0x41)
+#define BMI160_GYRO_CONFIG_ADDR UINT8_C(0x42)
+#define BMI160_GYRO_RANGE_ADDR UINT8_C(0x43)
+#define BMI160_AUX_ODR_ADDR UINT8_C(0x44)
+#define BMI160_FIFO_DOWN_ADDR UINT8_C(0x45)
+#define BMI160_FIFO_CONFIG_0_ADDR UINT8_C(0x46)
+#define BMI160_FIFO_CONFIG_1_ADDR UINT8_C(0x47)
+#define BMI160_AUX_IF_0_ADDR UINT8_C(0x4B)
+#define BMI160_AUX_IF_1_ADDR UINT8_C(0x4C)
+#define BMI160_AUX_IF_2_ADDR UINT8_C(0x4D)
+#define BMI160_AUX_IF_3_ADDR UINT8_C(0x4E)
+#define BMI160_AUX_IF_4_ADDR UINT8_C(0x4F)
+#define BMI160_INT_ENABLE_0_ADDR UINT8_C(0x50)
+#define BMI160_INT_ENABLE_1_ADDR UINT8_C(0x51)
+#define BMI160_INT_ENABLE_2_ADDR UINT8_C(0x52)
+#define BMI160_INT_OUT_CTRL_ADDR UINT8_C(0x53)
+#define BMI160_INT_LATCH_ADDR UINT8_C(0x54)
+#define BMI160_INT_MAP_0_ADDR UINT8_C(0x55)
+#define BMI160_INT_MAP_1_ADDR UINT8_C(0x56)
+#define BMI160_INT_MAP_2_ADDR UINT8_C(0x57)
+#define BMI160_INT_DATA_0_ADDR UINT8_C(0x58)
+#define BMI160_INT_DATA_1_ADDR UINT8_C(0x59)
+#define BMI160_INT_LOWHIGH_0_ADDR UINT8_C(0x5A)
+#define BMI160_INT_LOWHIGH_1_ADDR UINT8_C(0x5B)
+#define BMI160_INT_LOWHIGH_2_ADDR UINT8_C(0x5C)
+#define BMI160_INT_LOWHIGH_3_ADDR UINT8_C(0x5D)
+#define BMI160_INT_LOWHIGH_4_ADDR UINT8_C(0x5E)
+#define BMI160_INT_MOTION_0_ADDR UINT8_C(0x5F)
+#define BMI160_INT_MOTION_1_ADDR UINT8_C(0x60)
+#define BMI160_INT_MOTION_2_ADDR UINT8_C(0x61)
+#define BMI160_INT_MOTION_3_ADDR UINT8_C(0x62)
+#define BMI160_INT_TAP_0_ADDR UINT8_C(0x63)
+#define BMI160_INT_TAP_1_ADDR UINT8_C(0x64)
+#define BMI160_INT_ORIENT_0_ADDR UINT8_C(0x65)
+#define BMI160_INT_ORIENT_1_ADDR UINT8_C(0x66)
+#define BMI160_INT_FLAT_0_ADDR UINT8_C(0x67)
+#define BMI160_INT_FLAT_1_ADDR UINT8_C(0x68)
+#define BMI160_FOC_CONF_ADDR UINT8_C(0x69)
+#define BMI160_CONF_ADDR UINT8_C(0x6A)
+
+#define BMI160_IF_CONF_ADDR UINT8_C(0x6B)
+#define BMI160_SELF_TEST_ADDR UINT8_C(0x6D)
+#define BMI160_OFFSET_ADDR UINT8_C(0x71)
+#define BMI160_OFFSET_CONF_ADDR UINT8_C(0x77)
+#define BMI160_INT_STEP_CNT_0_ADDR UINT8_C(0x78)
+#define BMI160_INT_STEP_CONFIG_0_ADDR UINT8_C(0x7A)
+#define BMI160_INT_STEP_CONFIG_1_ADDR UINT8_C(0x7B)
+#define BMI160_COMMAND_REG_ADDR UINT8_C(0x7E)
+#define BMI160_SPI_COMM_TEST_ADDR UINT8_C(0x7F)
+#define BMI160_INTL_PULLUP_CONF_ADDR UINT8_C(0x85)
+
+/** Error code definitions */
+#define BMI160_OK INT8_C(0)
+#define BMI160_E_NULL_PTR INT8_C(-1)
+#define BMI160_E_COM_FAIL INT8_C(-2)
+#define BMI160_E_DEV_NOT_FOUND INT8_C(-3)
+#define BMI160_E_OUT_OF_RANGE INT8_C(-4)
+#define BMI160_E_INVALID_INPUT INT8_C(-5)
+#define BMI160_E_ACCEL_ODR_BW_INVALID INT8_C(-6)
+#define BMI160_E_GYRO_ODR_BW_INVALID INT8_C(-7)
+#define BMI160_E_LWP_PRE_FLTR_INT_INVALID INT8_C(-8)
+#define BMI160_E_LWP_PRE_FLTR_INVALID INT8_C(-9)
+#define BMI160_E_AUX_NOT_FOUND INT8_C(-10)
+#define BMI160_E_FOC_FAILURE INT8_C(-11)
+#define BMI160_E_READ_WRITE_LENGTH_INVALID INT8_C(-12)
+#define BMI160_E_INVALID_CONFIG INT8_C(-13)
+
+/**\name API warning codes */
+#define BMI160_W_GYRO_SELF_TEST_FAIL INT8_C(1)
+#define BMI160_W_ACCEl_SELF_TEST_FAIL INT8_C(2)
+
+/** BMI160 unique chip identifier */
+#define BMI160_CHIP_ID UINT8_C(0xD1)
+
+/** Soft reset command */
+#define BMI160_SOFT_RESET_CMD UINT8_C(0xb6)
+#define BMI160_SOFT_RESET_DELAY_MS UINT8_C(1)
+
+/** Start FOC command */
+#define BMI160_START_FOC_CMD UINT8_C(0x03)
+
+/** NVM backup enabling command */
+#define BMI160_NVM_BACKUP_EN UINT8_C(0xA0)
+
+/* Delay in ms settings */
+#define BMI160_ACCEL_DELAY_MS UINT8_C(5)
+#define BMI160_GYRO_DELAY_MS UINT8_C(80)
+#define BMI160_ONE_MS_DELAY UINT8_C(1)
+#define BMI160_AUX_COM_DELAY UINT8_C(10)
+#define BMI160_GYRO_SELF_TEST_DELAY UINT8_C(20)
+#define BMI160_ACCEL_SELF_TEST_DELAY UINT8_C(50)
+
+/** Self test configurations */
+#define BMI160_ACCEL_SELF_TEST_CONFIG UINT8_C(0x2C)
+#define BMI160_ACCEL_SELF_TEST_POSITIVE_EN UINT8_C(0x0D)
+#define BMI160_ACCEL_SELF_TEST_NEGATIVE_EN UINT8_C(0x09)
+#define BMI160_ACCEL_SELF_TEST_LIMIT UINT16_C(8192)
+
+/** Power mode settings */
+/* Accel power mode */
+#define BMI160_ACCEL_NORMAL_MODE UINT8_C(0x11)
+#define BMI160_ACCEL_LOWPOWER_MODE UINT8_C(0x12)
+#define BMI160_ACCEL_SUSPEND_MODE UINT8_C(0x10)
+
+/* Gyro power mode */
+#define BMI160_GYRO_SUSPEND_MODE UINT8_C(0x14)
+#define BMI160_GYRO_NORMAL_MODE UINT8_C(0x15)
+#define BMI160_GYRO_FASTSTARTUP_MODE UINT8_C(0x17)
+
+/* Aux power mode */
+#define BMI160_AUX_SUSPEND_MODE UINT8_C(0x18)
+#define BMI160_AUX_NORMAL_MODE UINT8_C(0x19)
+#define BMI160_AUX_LOWPOWER_MODE UINT8_C(0x1A)
+
+/** Range settings */
+/* Accel Range */
+#define BMI160_ACCEL_RANGE_2G UINT8_C(0x03)
+#define BMI160_ACCEL_RANGE_4G UINT8_C(0x05)
+#define BMI160_ACCEL_RANGE_8G UINT8_C(0x08)
+#define BMI160_ACCEL_RANGE_16G UINT8_C(0x0C)
+
+/* Gyro Range */
+#define BMI160_GYRO_RANGE_2000_DPS UINT8_C(0x00)
+#define BMI160_GYRO_RANGE_1000_DPS UINT8_C(0x01)
+#define BMI160_GYRO_RANGE_500_DPS UINT8_C(0x02)
+#define BMI160_GYRO_RANGE_250_DPS UINT8_C(0x03)
+#define BMI160_GYRO_RANGE_125_DPS UINT8_C(0x04)
+
+/** Bandwidth settings */
+/* Accel Bandwidth */
+#define BMI160_ACCEL_BW_OSR4_AVG1 UINT8_C(0x00)
+#define BMI160_ACCEL_BW_OSR2_AVG2 UINT8_C(0x01)
+#define BMI160_ACCEL_BW_NORMAL_AVG4 UINT8_C(0x02)
+#define BMI160_ACCEL_BW_RES_AVG8 UINT8_C(0x03)
+#define BMI160_ACCEL_BW_RES_AVG16 UINT8_C(0x04)
+#define BMI160_ACCEL_BW_RES_AVG32 UINT8_C(0x05)
+#define BMI160_ACCEL_BW_RES_AVG64 UINT8_C(0x06)
+#define BMI160_ACCEL_BW_RES_AVG128 UINT8_C(0x07)
+
+#define BMI160_GYRO_BW_OSR4_MODE UINT8_C(0x00)
+#define BMI160_GYRO_BW_OSR2_MODE UINT8_C(0x01)
+#define BMI160_GYRO_BW_NORMAL_MODE UINT8_C(0x02)
+
+/* Output Data Rate settings */
+/* Accel Output data rate */
+#define BMI160_ACCEL_ODR_RESERVED UINT8_C(0x00)
+#define BMI160_ACCEL_ODR_0_78HZ UINT8_C(0x01)
+#define BMI160_ACCEL_ODR_1_56HZ UINT8_C(0x02)
+#define BMI160_ACCEL_ODR_3_12HZ UINT8_C(0x03)
+#define BMI160_ACCEL_ODR_6_25HZ UINT8_C(0x04)
+#define BMI160_ACCEL_ODR_12_5HZ UINT8_C(0x05)
+#define BMI160_ACCEL_ODR_25HZ UINT8_C(0x06)
+#define BMI160_ACCEL_ODR_50HZ UINT8_C(0x07)
+#define BMI160_ACCEL_ODR_100HZ UINT8_C(0x08)
+#define BMI160_ACCEL_ODR_200HZ UINT8_C(0x09)
+#define BMI160_ACCEL_ODR_400HZ UINT8_C(0x0A)
+#define BMI160_ACCEL_ODR_800HZ UINT8_C(0x0B)
+#define BMI160_ACCEL_ODR_1600HZ UINT8_C(0x0C)
+#define BMI160_ACCEL_ODR_RESERVED0 UINT8_C(0x0D)
+#define BMI160_ACCEL_ODR_RESERVED1 UINT8_C(0x0E)
+#define BMI160_ACCEL_ODR_RESERVED2 UINT8_C(0x0F)
+
+/* Gyro Output data rate */
+#define BMI160_GYRO_ODR_RESERVED UINT8_C(0x00)
+#define BMI160_GYRO_ODR_25HZ UINT8_C(0x06)
+#define BMI160_GYRO_ODR_50HZ UINT8_C(0x07)
+#define BMI160_GYRO_ODR_100HZ UINT8_C(0x08)
+#define BMI160_GYRO_ODR_200HZ UINT8_C(0x09)
+#define BMI160_GYRO_ODR_400HZ UINT8_C(0x0A)
+#define BMI160_GYRO_ODR_800HZ UINT8_C(0x0B)
+#define BMI160_GYRO_ODR_1600HZ UINT8_C(0x0C)
+#define BMI160_GYRO_ODR_3200HZ UINT8_C(0x0D)
+
+/* Auxiliary sensor Output data rate */
+#define BMI160_AUX_ODR_RESERVED UINT8_C(0x00)
+#define BMI160_AUX_ODR_0_78HZ UINT8_C(0x01)
+#define BMI160_AUX_ODR_1_56HZ UINT8_C(0x02)
+#define BMI160_AUX_ODR_3_12HZ UINT8_C(0x03)
+#define BMI160_AUX_ODR_6_25HZ UINT8_C(0x04)
+#define BMI160_AUX_ODR_12_5HZ UINT8_C(0x05)
+#define BMI160_AUX_ODR_25HZ UINT8_C(0x06)
+#define BMI160_AUX_ODR_50HZ UINT8_C(0x07)
+#define BMI160_AUX_ODR_100HZ UINT8_C(0x08)
+#define BMI160_AUX_ODR_200HZ UINT8_C(0x09)
+#define BMI160_AUX_ODR_400HZ UINT8_C(0x0A)
+#define BMI160_AUX_ODR_800HZ UINT8_C(0x0B)
+
+/** FIFO_CONFIG Definitions */
+#define BMI160_FIFO_TIME_ENABLE UINT8_C(0x02)
+#define BMI160_FIFO_TAG_INT2_ENABLE UINT8_C(0x04)
+#define BMI160_FIFO_TAG_INT1_ENABLE UINT8_C(0x08)
+#define BMI160_FIFO_HEAD_ENABLE UINT8_C(0x10)
+#define BMI160_FIFO_M_ENABLE UINT8_C(0x20)
+#define BMI160_FIFO_A_ENABLE UINT8_C(0x40)
+#define BMI160_FIFO_M_A_ENABLE UINT8_C(0x60)
+#define BMI160_FIFO_G_ENABLE UINT8_C(0x80)
+#define BMI160_FIFO_M_G_ENABLE UINT8_C(0xA0)
+#define BMI160_FIFO_G_A_ENABLE UINT8_C(0xC0)
+#define BMI160_FIFO_M_G_A_ENABLE UINT8_C(0xE0)
+
+/* Macro to specify the number of bytes over-read from the
+ * FIFO in order to get the sensor time at the end of FIFO */
+#ifndef BMI160_FIFO_BYTES_OVERREAD
+#define BMI160_FIFO_BYTES_OVERREAD UINT8_C(25)
+#endif
+
+/* Accel, gyro and aux. sensor length and also their combined
+ * length definitions in FIFO */
+#define BMI160_FIFO_G_LENGTH UINT8_C(6)
+#define BMI160_FIFO_A_LENGTH UINT8_C(6)
+#define BMI160_FIFO_M_LENGTH UINT8_C(8)
+#define BMI160_FIFO_GA_LENGTH UINT8_C(12)
+#define BMI160_FIFO_MA_LENGTH UINT8_C(14)
+#define BMI160_FIFO_MG_LENGTH UINT8_C(14)
+#define BMI160_FIFO_MGA_LENGTH UINT8_C(20)
+
+/** FIFO Header Data definitions */
+#define BMI160_FIFO_HEAD_SKIP_FRAME UINT8_C(0x40)
+#define BMI160_FIFO_HEAD_SENSOR_TIME UINT8_C(0x44)
+#define BMI160_FIFO_HEAD_INPUT_CONFIG UINT8_C(0x48)
+#define BMI160_FIFO_HEAD_OVER_READ UINT8_C(0x80)
+#define BMI160_FIFO_HEAD_A UINT8_C(0x84)
+#define BMI160_FIFO_HEAD_G UINT8_C(0x88)
+#define BMI160_FIFO_HEAD_G_A UINT8_C(0x8C)
+#define BMI160_FIFO_HEAD_M UINT8_C(0x90)
+#define BMI160_FIFO_HEAD_M_A UINT8_C(0x94)
+#define BMI160_FIFO_HEAD_M_G UINT8_C(0x98)
+#define BMI160_FIFO_HEAD_M_G_A UINT8_C(0x9C)
+
+/** FIFO sensor time length definitions */
+#define BMI160_SENSOR_TIME_LENGTH UINT8_C(3)
+
+/** FIFO DOWN selection */
+/* Accel fifo down-sampling values*/
+#define BMI160_ACCEL_FIFO_DOWN_ZERO UINT8_C(0x00)
+#define BMI160_ACCEL_FIFO_DOWN_ONE UINT8_C(0x10)
+#define BMI160_ACCEL_FIFO_DOWN_TWO UINT8_C(0x20)
+#define BMI160_ACCEL_FIFO_DOWN_THREE UINT8_C(0x30)
+#define BMI160_ACCEL_FIFO_DOWN_FOUR UINT8_C(0x40)
+#define BMI160_ACCEL_FIFO_DOWN_FIVE UINT8_C(0x50)
+#define BMI160_ACCEL_FIFO_DOWN_SIX UINT8_C(0x60)
+#define BMI160_ACCEL_FIFO_DOWN_SEVEN UINT8_C(0x70)
+
+/* Gyro fifo down-smapling values*/
+#define BMI160_GYRO_FIFO_DOWN_ZERO UINT8_C(0x00)
+#define BMI160_GYRO_FIFO_DOWN_ONE UINT8_C(0x01)
+#define BMI160_GYRO_FIFO_DOWN_TWO UINT8_C(0x02)
+#define BMI160_GYRO_FIFO_DOWN_THREE UINT8_C(0x03)
+#define BMI160_GYRO_FIFO_DOWN_FOUR UINT8_C(0x04)
+#define BMI160_GYRO_FIFO_DOWN_FIVE UINT8_C(0x05)
+#define BMI160_GYRO_FIFO_DOWN_SIX UINT8_C(0x06)
+#define BMI160_GYRO_FIFO_DOWN_SEVEN UINT8_C(0x07)
+
+/* Accel Fifo filter enable*/
+#define BMI160_ACCEL_FIFO_FILT_EN UINT8_C(0x80)
+
+/* Gyro Fifo filter enable*/
+#define BMI160_GYRO_FIFO_FILT_EN UINT8_C(0x08)
+
+/** Definitions to check validity of FIFO frames */
+#define FIFO_CONFIG_MSB_CHECK UINT8_C(0x80)
+#define FIFO_CONFIG_LSB_CHECK UINT8_C(0x00)
+
+/*! BMI160 accel FOC configurations */
+#define BMI160_FOC_ACCEL_DISABLED UINT8_C(0x00)
+#define BMI160_FOC_ACCEL_POSITIVE_G UINT8_C(0x01)
+#define BMI160_FOC_ACCEL_NEGATIVE_G UINT8_C(0x02)
+#define BMI160_FOC_ACCEL_0G UINT8_C(0x03)
+
+/** Array Parameter DefinItions */
+#define BMI160_SENSOR_TIME_LSB_BYTE UINT8_C(0)
+#define BMI160_SENSOR_TIME_XLSB_BYTE UINT8_C(1)
+#define BMI160_SENSOR_TIME_MSB_BYTE UINT8_C(2)
+
+/** Interface settings */
+#define BMI160_SPI_INTF UINT8_C(1)
+#define BMI160_I2C_INTF UINT8_C(0)
+#define BMI160_SPI_RD_MASK UINT8_C(0x80)
+#define BMI160_SPI_WR_MASK UINT8_C(0x7F)
+
+/* Sensor & time select definition*/
+#define BMI160_ACCEL_SEL UINT8_C(0x01)
+#define BMI160_GYRO_SEL UINT8_C(0x02)
+#define BMI160_TIME_SEL UINT8_C(0x04)
+
+/* Sensor select mask*/
+#define BMI160_SEN_SEL_MASK UINT8_C(0x07)
+
+/* Error code mask */
+#define BMI160_ERR_REG_MASK UINT8_C(0x0F)
+
+/* BMI160 I2C address */
+#define BMI160_I2C_ADDR UINT8_C(0x68)
+
+/* BMI160 secondary IF address */
+#define BMI160_AUX_BMM150_I2C_ADDR UINT8_C(0x10)
+
+/** BMI160 Length definitions */
+#define BMI160_ONE UINT8_C(1)
+#define BMI160_TWO UINT8_C(2)
+#define BMI160_THREE UINT8_C(3)
+#define BMI160_FOUR UINT8_C(4)
+#define BMI160_FIVE UINT8_C(5)
+
+/** BMI160 fifo level Margin */
+#define BMI160_FIFO_LEVEL_MARGIN UINT8_C(16)
+
+/** BMI160 fifo flush Command */
+#define BMI160_FIFO_FLUSH_VALUE UINT8_C(0xB0)
+
+/** BMI160 offset values for xyz axes of accel */
+#define BMI160_ACCEL_MIN_OFFSET INT8_C(-128)
+#define BMI160_ACCEL_MAX_OFFSET INT8_C(127)
+
+/** BMI160 offset values for xyz axes of gyro */
+#define BMI160_GYRO_MIN_OFFSET INT16_C(-512)
+#define BMI160_GYRO_MAX_OFFSET INT16_C(511)
+
+/** BMI160 fifo full interrupt position and mask */
+#define BMI160_FIFO_FULL_INT_POS UINT8_C(5)
+#define BMI160_FIFO_FULL_INT_MSK UINT8_C(0x20)
+#define BMI160_FIFO_WTM_INT_POS UINT8_C(6)
+#define BMI160_FIFO_WTM_INT_MSK UINT8_C(0x40)
+
+#define BMI160_FIFO_FULL_INT_PIN1_POS UINT8_C(5)
+#define BMI160_FIFO_FULL_INT_PIN1_MSK UINT8_C(0x20)
+#define BMI160_FIFO_FULL_INT_PIN2_POS UINT8_C(1)
+#define BMI160_FIFO_FULL_INT_PIN2_MSK UINT8_C(0x02)
+
+#define BMI160_FIFO_WTM_INT_PIN1_POS UINT8_C(6)
+#define BMI160_FIFO_WTM_INT_PIN1_MSK UINT8_C(0x40)
+#define BMI160_FIFO_WTM_INT_PIN2_POS UINT8_C(2)
+#define BMI160_FIFO_WTM_INT_PIN2_MSK UINT8_C(0x04)
+
+#define BMI160_MANUAL_MODE_EN_POS UINT8_C(7)
+#define BMI160_MANUAL_MODE_EN_MSK UINT8_C(0x80)
+#define BMI160_AUX_READ_BURST_POS UINT8_C(0)
+#define BMI160_AUX_READ_BURST_MSK UINT8_C(0x03)
+
+#define BMI160_GYRO_SELF_TEST_POS UINT8_C(4)
+#define BMI160_GYRO_SELF_TEST_MSK UINT8_C(0x10)
+#define BMI160_GYRO_SELF_TEST_STATUS_POS UINT8_C(1)
+#define BMI160_GYRO_SELF_TEST_STATUS_MSK UINT8_C(0x02)
+
+#define BMI160_GYRO_FOC_EN_POS UINT8_C(6)
+#define BMI160_GYRO_FOC_EN_MSK UINT8_C(0x40)
+
+#define BMI160_ACCEL_FOC_X_CONF_POS UINT8_C(4)
+#define BMI160_ACCEL_FOC_X_CONF_MSK UINT8_C(0x30)
+
+#define BMI160_ACCEL_FOC_Y_CONF_POS UINT8_C(2)
+#define BMI160_ACCEL_FOC_Y_CONF_MSK UINT8_C(0x0C)
+
+#define BMI160_ACCEL_FOC_Z_CONF_MSK UINT8_C(0x03)
+
+#define BMI160_FOC_STATUS_POS UINT8_C(3)
+#define BMI160_FOC_STATUS_MSK UINT8_C(0x08)
+
+#define BMI160_GYRO_OFFSET_X_MSK UINT8_C(0x03)
+
+#define BMI160_GYRO_OFFSET_Y_POS UINT8_C(2)
+#define BMI160_GYRO_OFFSET_Y_MSK UINT8_C(0x0C)
+
+#define BMI160_GYRO_OFFSET_Z_POS UINT8_C(4)
+#define BMI160_GYRO_OFFSET_Z_MSK UINT8_C(0x30)
+
+#define BMI160_GYRO_OFFSET_EN_POS UINT8_C(7)
+#define BMI160_GYRO_OFFSET_EN_MSK UINT8_C(0x80)
+
+#define BMI160_ACCEL_OFFSET_EN_POS UINT8_C(6)
+#define BMI160_ACCEL_OFFSET_EN_MSK UINT8_C(0x40)
+
+#define BMI160_GYRO_OFFSET_POS UINT16_C(8)
+#define BMI160_GYRO_OFFSET_MSK UINT16_C(0x0300)
+
+#define BMI160_NVM_UPDATE_POS UINT8_C(1)
+#define BMI160_NVM_UPDATE_MSK UINT8_C(0x02)
+
+#define BMI160_NVM_STATUS_POS UINT8_C(4)
+#define BMI160_NVM_STATUS_MSK UINT8_C(0x10)
+
+#define BMI160_MAG_POWER_MODE_MSK UINT8_C(0x03)
+
+#define BMI160_ACCEL_POWER_MODE_MSK UINT8_C(0x30)
+#define BMI160_ACCEL_POWER_MODE_POS UINT8_C(4)
+
+#define BMI160_GYRO_POWER_MODE_MSK UINT8_C(0x0C)
+#define BMI160_GYRO_POWER_MODE_POS UINT8_C(2)
+
+/* BIT SLICE GET AND SET FUNCTIONS */
+#define BMI160_GET_BITS(regvar, bitname) ((regvar & bitname##_MSK) >> bitname##_POS)
+#define BMI160_SET_BITS(regvar, bitname, val) \
+    ((regvar & ~bitname##_MSK) | ((val << bitname##_POS) & bitname##_MSK))
+
+#define BMI160_SET_BITS_POS_0(reg_data, bitname, data) \
+    ((reg_data & ~(bitname##_MSK)) | (data & bitname##_MSK))
+
+#define BMI160_GET_BITS_POS_0(reg_data, bitname) (reg_data & (bitname##_MSK))
+
+/**\name UTILITY MACROS */
+#define BMI160_SET_LOW_BYTE UINT16_C(0x00FF)
+#define BMI160_SET_HIGH_BYTE UINT16_C(0xFF00)
+
+#define BMI160_GET_LSB(var) (uint8_t)(var & BMI160_SET_LOW_BYTE)
+#define BMI160_GET_MSB(var) (uint8_t)((var & BMI160_SET_HIGH_BYTE) >> 8)
+
+/*****************************************************************************/
+/* type definitions */
+
+/*!
+ * @brief Bus communication function pointer which should be mapped to
+ * the platform specific read functions of the user
+ */
+typedef int8_t (
+    *bmi160_read_fptr_t)(uint8_t dev_addr, uint8_t reg_addr, uint8_t* data, uint16_t len);
+
+/*!
+ * @brief Bus communication function pointer which should be mapped to
+ * the platform specific write functions of the user
+ */
+typedef int8_t (
+    *bmi160_write_fptr_t)(uint8_t dev_addr, uint8_t reg_addr, uint8_t* read_data, uint16_t len);
+typedef void (*bmi160_delay_fptr_t)(uint32_t period);
+
+/*************************** Data structures *********************************/
+
+/*!
+ * @brief bmi160 interrupt status selection enum.
+ */
+enum bmi160_int_status_sel {
+    BMI160_INT_STATUS_0 = 1,
+    BMI160_INT_STATUS_1 = 2,
+    BMI160_INT_STATUS_2 = 4,
+    BMI160_INT_STATUS_3 = 8,
+    BMI160_INT_STATUS_ALL = 15
+};
+
+/*!
+ * @brief bmi160 interrupt status bits structure
+ */
+struct bmi160_int_status_bits {
+#ifdef LITTLE_ENDIAN
+
+    uint32_t step : 1;
+    uint32_t sigmot : 1;
+    uint32_t anym : 1;
+
+    /* pmu trigger will be handled later */
+    uint32_t pmu_trigger_reserved : 1;
+    uint32_t d_tap : 1;
+    uint32_t s_tap : 1;
+    uint32_t orient : 1;
+    uint32_t flat_int : 1;
+    uint32_t reserved : 2;
+    uint32_t high_g : 1;
+    uint32_t low_g : 1;
+    uint32_t drdy : 1;
+    uint32_t ffull : 1;
+    uint32_t fwm : 1;
+    uint32_t nomo : 1;
+    uint32_t anym_first_x : 1;
+    uint32_t anym_first_y : 1;
+    uint32_t anym_first_z : 1;
+    uint32_t anym_sign : 1;
+    uint32_t tap_first_x : 1;
+    uint32_t tap_first_y : 1;
+    uint32_t tap_first_z : 1;
+    uint32_t tap_sign : 1;
+    uint32_t high_first_x : 1;
+    uint32_t high_first_y : 1;
+    uint32_t high_first_z : 1;
+    uint32_t high_sign : 1;
+    uint32_t orient_1_0 : 2;
+    uint32_t orient_2 : 1;
+    uint32_t flat : 1;
+#else
+    uint32_t high_first_x : 1;
+    uint32_t high_first_y : 1;
+    uint32_t high_first_z : 1;
+    uint32_t high_sign : 1;
+    uint32_t orient_1_0 : 2;
+    uint32_t orient_2 : 1;
+    uint32_t flat : 1;
+    uint32_t anym_first_x : 1;
+    uint32_t anym_first_y : 1;
+    uint32_t anym_first_z : 1;
+    uint32_t anym_sign : 1;
+    uint32_t tap_first_x : 1;
+    uint32_t tap_first_y : 1;
+    uint32_t tap_first_z : 1;
+    uint32_t tap_sign : 1;
+    uint32_t reserved : 2;
+    uint32_t high_g : 1;
+    uint32_t low_g : 1;
+    uint32_t drdy : 1;
+    uint32_t ffull : 1;
+    uint32_t fwm : 1;
+    uint32_t nomo : 1;
+    uint32_t step : 1;
+    uint32_t sigmot : 1;
+    uint32_t anym : 1;
+
+    /* pmu trigger will be handled later */
+    uint32_t pmu_trigger_reserved : 1;
+    uint32_t d_tap : 1;
+    uint32_t s_tap : 1;
+    uint32_t orient : 1;
+    uint32_t flat_int : 1;
+#endif
+};
+
+/*!
+ * @brief bmi160 interrupt status structure
+ */
+union bmi160_int_status {
+    uint8_t data[4];
+    struct bmi160_int_status_bits bit;
+};
+
+/*!
+ * @brief bmi160 sensor data structure which comprises of accel data
+ */
+struct bmi160_sensor_data {
+    /*! X-axis sensor data */
+    int16_t x;
+
+    /*! Y-axis sensor data */
+    int16_t y;
+
+    /*! Z-axis sensor data */
+    int16_t z;
+
+    /*! sensor time */
+    uint32_t sensortime;
+};
+
+/*!
+ * @brief bmi160 aux data structure which comprises of 8 bytes of accel data
+ */
+struct bmi160_aux_data {
+    /*! Auxiliary data */
+    uint8_t data[8];
+};
+
+/*!
+ * @brief bmi160 FOC configuration structure
+ */
+struct bmi160_foc_conf {
+    /*! Enabling FOC in gyro
+     * Assignable macros :
+     *  - BMI160_ENABLE
+     *  - BMI160_DISABLE
+     */
+    uint8_t foc_gyr_en;
+
+    /*! Accel FOC configurations
+     * Assignable macros :
+     *  - BMI160_FOC_ACCEL_DISABLED
+     *  - BMI160_FOC_ACCEL_POSITIVE_G
+     *  - BMI160_FOC_ACCEL_NEGATIVE_G
+     *  - BMI160_FOC_ACCEL_0G
+     */
+    uint8_t foc_acc_x;
+    uint8_t foc_acc_y;
+    uint8_t foc_acc_z;
+
+    /*! Enabling offset compensation for accel in data registers
+     * Assignable macros :
+     *  - BMI160_ENABLE
+     *  - BMI160_DISABLE
+     */
+    uint8_t acc_off_en;
+
+    /*! Enabling offset compensation for gyro in data registers
+     * Assignable macros :
+     *  - BMI160_ENABLE
+     *  - BMI160_DISABLE
+     */
+    uint8_t gyro_off_en;
+};
+
+/*!
+ * @brief bmi160 accel gyro offsets
+ */
+struct bmi160_offsets {
+    /*! Accel offset for x axis */
+    int8_t off_acc_x;
+
+    /*! Accel offset for y axis */
+    int8_t off_acc_y;
+
+    /*! Accel offset for z axis */
+    int8_t off_acc_z;
+
+    /*! Gyro offset for x axis */
+    int16_t off_gyro_x;
+
+    /*! Gyro offset for y axis */
+    int16_t off_gyro_y;
+
+    /*! Gyro offset for z axis */
+    int16_t off_gyro_z;
+};
+
+/*!
+ * @brief FIFO aux. sensor data structure
+ */
+struct bmi160_aux_fifo_data {
+    /*! The value of aux. sensor x LSB data */
+    uint8_t aux_x_lsb;
+
+    /*! The value of aux. sensor x MSB data */
+    uint8_t aux_x_msb;
+
+    /*! The value of aux. sensor y LSB data */
+    uint8_t aux_y_lsb;
+
+    /*! The value of aux. sensor y MSB data */
+    uint8_t aux_y_msb;
+
+    /*! The value of aux. sensor z LSB data */
+    uint8_t aux_z_lsb;
+
+    /*! The value of aux. sensor z MSB data */
+    uint8_t aux_z_msb;
+
+    /*! The value of aux. sensor r for BMM150 LSB data */
+    uint8_t aux_r_y2_lsb;
+
+    /*! The value of aux. sensor r for BMM150 MSB data */
+    uint8_t aux_r_y2_msb;
+};
+
+/*!
+ * @brief bmi160 sensor select structure
+ */
+enum bmi160_select_sensor { BMI160_ACCEL_ONLY = 1, BMI160_GYRO_ONLY, BMI160_BOTH_ACCEL_AND_GYRO };
+
+/*!
+ * @brief bmi160 sensor step detector mode structure
+ */
+enum bmi160_step_detect_mode {
+    BMI160_STEP_DETECT_NORMAL,
+    BMI160_STEP_DETECT_SENSITIVE,
+    BMI160_STEP_DETECT_ROBUST,
+
+    /*! Non recommended User defined setting */
+    BMI160_STEP_DETECT_USER_DEFINE
+};
+
+/*!
+ * @brief enum for auxiliary burst read selection
+ */
+enum bmi160_aux_read_len {
+    BMI160_AUX_READ_LEN_0,
+    BMI160_AUX_READ_LEN_1,
+    BMI160_AUX_READ_LEN_2,
+    BMI160_AUX_READ_LEN_3
+};
+
+/*!
+ * @brief bmi160 sensor configuration structure
+ */
+struct bmi160_cfg {
+    /*! power mode */
+    uint8_t power;
+
+    /*! output data rate */
+    uint8_t odr;
+
+    /*! range */
+    uint8_t range;
+
+    /*! bandwidth */
+    uint8_t bw;
+};
+
+/*!
+ * @brief Aux sensor configuration structure
+ */
+struct bmi160_aux_cfg {
+    /*! Aux sensor, 1 - enable 0 - disable */
+    uint8_t aux_sensor_enable : 1;
+
+    /*! Aux manual/auto mode status */
+    uint8_t manual_enable : 1;
+
+    /*! Aux read burst length */
+    uint8_t aux_rd_burst_len : 2;
+
+    /*! output data rate */
+    uint8_t aux_odr : 4;
+
+    /*! i2c addr of auxiliary sensor */
+    uint8_t aux_i2c_addr;
+};
+
+/*!
+ * @brief bmi160 interrupt channel selection structure
+ */
+enum bmi160_int_channel {
+    /*! Un-map both channels */
+    BMI160_INT_CHANNEL_NONE,
+
+    /*! interrupt Channel 1 */
+    BMI160_INT_CHANNEL_1,
+
+    /*! interrupt Channel 2 */
+    BMI160_INT_CHANNEL_2,
+
+    /*! Map both channels */
+    BMI160_INT_CHANNEL_BOTH
+};
+enum bmi160_int_types {
+    /*! Slope/Any-motion interrupt */
+    BMI160_ACC_ANY_MOTION_INT,
+
+    /*! Significant motion interrupt */
+    BMI160_ACC_SIG_MOTION_INT,
+
+    /*! Step detector interrupt */
+    BMI160_STEP_DETECT_INT,
+
+    /*! double tap interrupt */
+    BMI160_ACC_DOUBLE_TAP_INT,
+
+    /*! single tap interrupt */
+    BMI160_ACC_SINGLE_TAP_INT,
+
+    /*! orientation interrupt */
+    BMI160_ACC_ORIENT_INT,
+
+    /*! flat interrupt */
+    BMI160_ACC_FLAT_INT,
+
+    /*! high-g interrupt */
+    BMI160_ACC_HIGH_G_INT,
+
+    /*! low-g interrupt */
+    BMI160_ACC_LOW_G_INT,
+
+    /*! slow/no-motion interrupt */
+    BMI160_ACC_SLOW_NO_MOTION_INT,
+
+    /*! data ready interrupt  */
+    BMI160_ACC_GYRO_DATA_RDY_INT,
+
+    /*! fifo full interrupt */
+    BMI160_ACC_GYRO_FIFO_FULL_INT,
+
+    /*! fifo watermark interrupt */
+    BMI160_ACC_GYRO_FIFO_WATERMARK_INT,
+
+    /*! fifo tagging feature support */
+    BMI160_FIFO_TAG_INT_PIN
+};
+
+/*!
+ * @brief bmi160 active state of any & sig motion interrupt.
+ */
+enum bmi160_any_sig_motion_active_interrupt_state {
+    /*! Both any & sig motion are disabled */
+    BMI160_BOTH_ANY_SIG_MOTION_DISABLED = -1,
+
+    /*! Any-motion selected */
+    BMI160_ANY_MOTION_ENABLED,
+
+    /*! Sig-motion selected */
+    BMI160_SIG_MOTION_ENABLED
+};
+struct bmi160_acc_tap_int_cfg {
+#ifdef LITTLE_ENDIAN
+
+    /*! tap threshold */
+    uint16_t tap_thr : 5;
+
+    /*! tap shock */
+    uint16_t tap_shock : 1;
+
+    /*! tap quiet */
+    uint16_t tap_quiet : 1;
+
+    /*! tap duration */
+    uint16_t tap_dur : 3;
+
+    /*! data source 0- filter & 1 pre-filter*/
+    uint16_t tap_data_src : 1;
+
+    /*! tap enable, 1 - enable, 0 - disable */
+    uint16_t tap_en : 1;
+#else
+
+    /*! tap enable, 1 - enable, 0 - disable */
+    uint16_t tap_en : 1;
+
+    /*! data source 0- filter & 1 pre-filter*/
+    uint16_t tap_data_src : 1;
+
+    /*! tap duration */
+    uint16_t tap_dur : 3;
+
+    /*! tap quiet */
+    uint16_t tap_quiet : 1;
+
+    /*! tap shock */
+    uint16_t tap_shock : 1;
+
+    /*! tap threshold */
+    uint16_t tap_thr : 5;
+#endif
+};
+struct bmi160_acc_any_mot_int_cfg {
+#ifdef LITTLE_ENDIAN
+
+    /*! 1 any-motion enable, 0 - any-motion disable */
+    uint8_t anymotion_en : 1;
+
+    /*! slope interrupt x, 1 - enable, 0 - disable */
+    uint8_t anymotion_x : 1;
+
+    /*! slope interrupt y, 1 - enable, 0 - disable */
+    uint8_t anymotion_y : 1;
+
+    /*! slope interrupt z, 1 - enable, 0 - disable */
+    uint8_t anymotion_z : 1;
+
+    /*! slope duration */
+    uint8_t anymotion_dur : 2;
+
+    /*! data source 0- filter & 1 pre-filter*/
+    uint8_t anymotion_data_src : 1;
+
+    /*! slope threshold */
+    uint8_t anymotion_thr;
+#else
+
+    /*! slope threshold */
+    uint8_t anymotion_thr;
+
+    /*! data source 0- filter & 1 pre-filter*/
+    uint8_t anymotion_data_src : 1;
+
+    /*! slope duration */
+    uint8_t anymotion_dur : 2;
+
+    /*! slope interrupt z, 1 - enable, 0 - disable */
+    uint8_t anymotion_z : 1;
+
+    /*! slope interrupt y, 1 - enable, 0 - disable */
+    uint8_t anymotion_y : 1;
+
+    /*! slope interrupt x, 1 - enable, 0 - disable */
+    uint8_t anymotion_x : 1;
+
+    /*! 1 any-motion enable, 0 - any-motion disable */
+    uint8_t anymotion_en : 1;
+#endif
+};
+struct bmi160_acc_sig_mot_int_cfg {
+#ifdef LITTLE_ENDIAN
+
+    /*! skip time of sig-motion interrupt */
+    uint8_t sig_mot_skip : 2;
+
+    /*! proof time of sig-motion interrupt */
+    uint8_t sig_mot_proof : 2;
+
+    /*! data source 0- filter & 1 pre-filter*/
+    uint8_t sig_data_src : 1;
+
+    /*! 1 - enable sig, 0 - disable sig & enable anymotion */
+    uint8_t sig_en : 1;
+
+    /*! sig-motion threshold */
+    uint8_t sig_mot_thres;
+#else
+
+    /*! sig-motion threshold */
+    uint8_t sig_mot_thres;
+
+    /*! 1 - enable sig, 0 - disable sig & enable anymotion */
+    uint8_t sig_en : 1;
+
+    /*! data source 0- filter & 1 pre-filter*/
+    uint8_t sig_data_src : 1;
+
+    /*! proof time of sig-motion interrupt */
+    uint8_t sig_mot_proof : 2;
+
+    /*! skip time of sig-motion interrupt */
+    uint8_t sig_mot_skip : 2;
+#endif
+};
+struct bmi160_acc_step_detect_int_cfg {
+#ifdef LITTLE_ENDIAN
+
+    /*! 1- step detector enable, 0- step detector disable */
+    uint16_t step_detector_en : 1;
+
+    /*! minimum threshold */
+    uint16_t min_threshold : 2;
+
+    /*! minimal detectable step time */
+    uint16_t steptime_min : 3;
+
+    /*! enable step counter mode setting */
+    uint16_t step_detector_mode : 2;
+
+    /*! minimum step buffer size*/
+    uint16_t step_min_buf : 3;
+#else
+
+    /*! minimum step buffer size*/
+    uint16_t step_min_buf : 3;
+
+    /*! enable step counter mode setting */
+    uint16_t step_detector_mode : 2;
+
+    /*! minimal detectable step time */
+    uint16_t steptime_min : 3;
+
+    /*! minimum threshold */
+    uint16_t min_threshold : 2;
+
+    /*! 1- step detector enable, 0- step detector disable */
+    uint16_t step_detector_en : 1;
+#endif
+};
+struct bmi160_acc_no_motion_int_cfg {
+#ifdef LITTLE_ENDIAN
+
+    /*! no motion interrupt x */
+    uint16_t no_motion_x : 1;
+
+    /*! no motion interrupt y */
+    uint16_t no_motion_y : 1;
+
+    /*! no motion interrupt z */
+    uint16_t no_motion_z : 1;
+
+    /*! no motion duration */
+    uint16_t no_motion_dur : 6;
+
+    /*! no motion sel , 1 - enable no-motion ,0- enable slow-motion */
+    uint16_t no_motion_sel : 1;
+
+    /*! data source 0- filter & 1 pre-filter*/
+    uint16_t no_motion_src : 1;
+
+    /*! no motion threshold */
+    uint8_t no_motion_thres;
+#else
+
+    /*! no motion threshold */
+    uint8_t no_motion_thres;
+
+    /*! data source 0- filter & 1 pre-filter*/
+    uint16_t no_motion_src : 1;
+
+    /*! no motion sel , 1 - enable no-motion ,0- enable slow-motion */
+    uint16_t no_motion_sel : 1;
+
+    /*! no motion duration */
+    uint16_t no_motion_dur : 6;
+
+    /* no motion interrupt z */
+    uint16_t no_motion_z : 1;
+
+    /*! no motion interrupt y */
+    uint16_t no_motion_y : 1;
+
+    /*! no motion interrupt x */
+    uint16_t no_motion_x : 1;
+#endif
+};
+struct bmi160_acc_orient_int_cfg {
+#ifdef LITTLE_ENDIAN
+
+    /*! thresholds for switching between the different orientations */
+    uint16_t orient_mode : 2;
+
+    /*! blocking_mode */
+    uint16_t orient_blocking : 2;
+
+    /*! Orientation interrupt hysteresis */
+    uint16_t orient_hyst : 4;
+
+    /*! Orientation interrupt theta */
+    uint16_t orient_theta : 6;
+
+    /*! Enable/disable Orientation interrupt */
+    uint16_t orient_ud_en : 1;
+
+    /*! exchange x- and z-axis in algorithm ,0 - z, 1 - x */
+    uint16_t axes_ex : 1;
+
+    /*! 1 - orient enable, 0 - orient disable */
+    uint8_t orient_en : 1;
+#else
+
+    /*! 1 - orient enable, 0 - orient disable */
+    uint8_t orient_en : 1;
+
+    /*! exchange x- and z-axis in algorithm ,0 - z, 1 - x */
+    uint16_t axes_ex : 1;
+
+    /*! Enable/disable Orientation interrupt */
+    uint16_t orient_ud_en : 1;
+
+    /*! Orientation interrupt theta */
+    uint16_t orient_theta : 6;
+
+    /*! Orientation interrupt hysteresis */
+    uint16_t orient_hyst : 4;
+
+    /*! blocking_mode */
+    uint16_t orient_blocking : 2;
+
+    /*! thresholds for switching between the different orientations */
+    uint16_t orient_mode : 2;
+#endif
+};
+struct bmi160_acc_flat_detect_int_cfg {
+#ifdef LITTLE_ENDIAN
+
+    /*! flat threshold */
+    uint16_t flat_theta : 6;
+
+    /*! flat interrupt hysteresis */
+    uint16_t flat_hy : 3;
+
+    /*! delay time for which the flat value must remain stable for the
+     * flat interrupt to be generated */
+    uint16_t flat_hold_time : 2;
+
+    /*! 1 - flat enable, 0 - flat disable */
+    uint16_t flat_en : 1;
+#else
+
+    /*! 1 - flat enable, 0 - flat disable */
+    uint16_t flat_en : 1;
+
+    /*! delay time for which the flat value must remain stable for the
+     * flat interrupt to be generated */
+    uint16_t flat_hold_time : 2;
+
+    /*! flat interrupt hysteresis */
+    uint16_t flat_hy : 3;
+
+    /*! flat threshold */
+    uint16_t flat_theta : 6;
+#endif
+};
+struct bmi160_acc_low_g_int_cfg {
+#ifdef LITTLE_ENDIAN
+
+    /*! low-g interrupt trigger delay */
+    uint8_t low_dur;
+
+    /*! low-g interrupt trigger threshold */
+    uint8_t low_thres;
+
+    /*! hysteresis of low-g interrupt */
+    uint8_t low_hyst : 2;
+
+    /*! 0 - single-axis mode ,1 - axis-summing mode */
+    uint8_t low_mode : 1;
+
+    /*! data source 0- filter & 1 pre-filter */
+    uint8_t low_data_src : 1;
+
+    /*! 1 - enable low-g, 0 - disable low-g */
+    uint8_t low_en : 1;
+#else
+
+    /*! 1 - enable low-g, 0 - disable low-g */
+    uint8_t low_en : 1;
+
+    /*! data source 0- filter & 1 pre-filter */
+    uint8_t low_data_src : 1;
+
+    /*! 0 - single-axis mode ,1 - axis-summing mode */
+    uint8_t low_mode : 1;
+
+    /*! hysteresis of low-g interrupt */
+    uint8_t low_hyst : 2;
+
+    /*! low-g interrupt trigger threshold */
+    uint8_t low_thres;
+
+    /*! low-g interrupt trigger delay */
+    uint8_t low_dur;
+#endif
+};
+struct bmi160_acc_high_g_int_cfg {
+#ifdef LITTLE_ENDIAN
+
+    /*! High-g interrupt x, 1 - enable, 0 - disable */
+    uint8_t high_g_x : 1;
+
+    /*! High-g interrupt y, 1 - enable, 0 - disable */
+    uint8_t high_g_y : 1;
+
+    /*! High-g interrupt z, 1 - enable, 0 - disable */
+    uint8_t high_g_z : 1;
+
+    /*! High-g hysteresis  */
+    uint8_t high_hy : 2;
+
+    /*! data source 0- filter & 1 pre-filter */
+    uint8_t high_data_src : 1;
+
+    /*! High-g threshold */
+    uint8_t high_thres;
+
+    /*! High-g duration */
+    uint8_t high_dur;
+#else
+
+    /*! High-g duration */
+    uint8_t high_dur;
+
+    /*! High-g threshold */
+    uint8_t high_thres;
+
+    /*! data source 0- filter & 1 pre-filter */
+    uint8_t high_data_src : 1;
+
+    /*! High-g hysteresis  */
+    uint8_t high_hy : 2;
+
+    /*! High-g interrupt z, 1 - enable, 0 - disable */
+    uint8_t high_g_z : 1;
+
+    /*! High-g interrupt y, 1 - enable, 0 - disable */
+    uint8_t high_g_y : 1;
+
+    /*! High-g interrupt x, 1 - enable, 0 - disable */
+    uint8_t high_g_x : 1;
+#endif
+};
+struct bmi160_int_pin_settg {
+#ifdef LITTLE_ENDIAN
+
+    /*! To enable either INT1 or INT2 pin as output.
+     * 0- output disabled ,1- output enabled */
+    uint16_t output_en : 1;
+
+    /*! 0 - push-pull 1- open drain,only valid if output_en is set 1 */
+    uint16_t output_mode : 1;
+
+    /*! 0 - active low , 1 - active high level.
+     * if output_en is 1,this applies to interrupts,else PMU_trigger */
+    uint16_t output_type : 1;
+
+    /*! 0 - level trigger , 1 - edge trigger  */
+    uint16_t edge_ctrl : 1;
+
+    /*! To enable either INT1 or INT2 pin as input.
+     * 0 - input disabled ,1 - input enabled */
+    uint16_t input_en : 1;
+
+    /*! latch duration*/
+    uint16_t latch_dur : 4;
+#else
+
+    /*! latch duration*/
+    uint16_t latch_dur : 4;
+
+    /*! Latched,non-latched or temporary interrupt modes */
+    uint16_t input_en : 1;
+
+    /*! 1 - edge trigger, 0 - level trigger */
+    uint16_t edge_ctrl : 1;
+
+    /*! 0 - active low , 1 - active high level.
+     * if output_en is 1,this applies to interrupts,else PMU_trigger */
+    uint16_t output_type : 1;
+
+    /*! 0 - push-pull , 1 - open drain,only valid if output_en is set 1 */
+    uint16_t output_mode : 1;
+
+    /*! To enable either INT1 or INT2 pin as output.
+     * 0 - output disabled , 1 - output enabled */
+    uint16_t output_en : 1;
+#endif
+};
+union bmi160_int_type_cfg {
+    /*! Tap interrupt structure */
+    struct bmi160_acc_tap_int_cfg acc_tap_int;
+
+    /*! Slope interrupt structure */
+    struct bmi160_acc_any_mot_int_cfg acc_any_motion_int;
+
+    /*! Significant motion interrupt structure */
+    struct bmi160_acc_sig_mot_int_cfg acc_sig_motion_int;
+
+    /*! Step detector interrupt structure */
+    struct bmi160_acc_step_detect_int_cfg acc_step_detect_int;
+
+    /*! No motion interrupt structure */
+    struct bmi160_acc_no_motion_int_cfg acc_no_motion_int;
+
+    /*! Orientation interrupt structure */
+    struct bmi160_acc_orient_int_cfg acc_orient_int;
+
+    /*! Flat interrupt structure */
+    struct bmi160_acc_flat_detect_int_cfg acc_flat_int;
+
+    /*! Low-g interrupt structure */
+    struct bmi160_acc_low_g_int_cfg acc_low_g_int;
+
+    /*! High-g interrupt structure */
+    struct bmi160_acc_high_g_int_cfg acc_high_g_int;
+};
+struct bmi160_int_settg {
+    /*! Interrupt channel */
+    enum bmi160_int_channel int_channel;
+
+    /*! Select Interrupt */
+    enum bmi160_int_types int_type;
+
+    /*! Structure configuring Interrupt pins */
+    struct bmi160_int_pin_settg int_pin_settg;
+
+    /*! Union configures required interrupt */
+    union bmi160_int_type_cfg int_type_cfg;
+
+    /*! FIFO FULL INT 1-enable, 0-disable */
+    uint8_t fifo_full_int_en : 1;
+
+    /*! FIFO WTM INT 1-enable, 0-disable */
+    uint8_t fifo_wtm_int_en : 1;
+};
+
+/*!
+ *  @brief This structure holds the information for usage of
+ *  FIFO by the user.
+ */
+struct bmi160_fifo_frame {
+    /*! Data buffer of user defined length is to be mapped here */
+    uint8_t* data;
+
+    /*! While calling the API  "bmi160_get_fifo_data" , length stores
+     *  number of bytes in FIFO to be read (specified by user as input)
+     *  and after execution of the API ,number of FIFO data bytes
+     *  available is provided as an output to user
+     */
+    uint16_t length;
+
+    /*! FIFO time enable */
+    uint8_t fifo_time_enable;
+
+    /*! Enabling of the FIFO header to stream in header mode */
+    uint8_t fifo_header_enable;
+
+    /*! Streaming of the Accelerometer, Gyroscope
+     * sensor data or both in FIFO */
+    uint8_t fifo_data_enable;
+
+    /*! Will be equal to length when no more frames are there to parse */
+    uint16_t accel_byte_start_idx;
+
+    /*! Will be equal to length when no more frames are there to parse */
+    uint16_t gyro_byte_start_idx;
+
+    /*! Will be equal to length when no more frames are there to parse */
+    uint16_t aux_byte_start_idx;
+
+    /*! Value of FIFO sensor time time */
+    uint32_t sensor_time;
+
+    /*! Value of Skipped frame counts */
+    uint8_t skipped_frame_count;
+};
+struct bmi160_dev {
+    /*! Chip Id */
+    uint8_t chip_id;
+
+    /*! Device Id */
+    uint8_t id;
+
+    /*! 0 - I2C , 1 - SPI Interface */
+    uint8_t intf;
+
+    /*! Hold active interrupts status for any and sig motion
+     *  0 - Any-motion enable, 1 - Sig-motion enable,
+     *  -1 neither any-motion nor sig-motion selected */
+    enum bmi160_any_sig_motion_active_interrupt_state any_sig_sel;
+
+    /*! Structure to configure Accel sensor */
+    struct bmi160_cfg accel_cfg;
+
+    /*! Structure to hold previous/old accel config parameters.
+     * This is used at driver level to prevent overwriting of same
+     * data, hence user does not change it in the code */
+    struct bmi160_cfg prev_accel_cfg;
+
+    /*! Structure to configure Gyro sensor */
+    struct bmi160_cfg gyro_cfg;
+
+    /*! Structure to hold previous/old gyro config parameters.
+     * This is used at driver level to prevent overwriting of same
+     * data, hence user does not change it in the code */
+    struct bmi160_cfg prev_gyro_cfg;
+
+    /*! Structure to configure the auxiliary sensor */
+    struct bmi160_aux_cfg aux_cfg;
+
+    /*! Structure to hold previous/old aux config parameters.
+     * This is used at driver level to prevent overwriting of same
+     * data, hence user does not change it in the code */
+    struct bmi160_aux_cfg prev_aux_cfg;
+
+    /*! FIFO related configurations */
+    struct bmi160_fifo_frame* fifo;
+
+    /*! Read function pointer */
+    bmi160_read_fptr_t read;
+
+    /*! Write function pointer */
+    bmi160_write_fptr_t write;
+
+    /*!  Delay function pointer */
+    bmi160_delay_fptr_t delay_ms;
+
+    /*! User set read/write length */
+    uint16_t read_write_len;
+};
+
+#endif /* BMI160_DEFS_H_ */

+ 29 - 0
airmouse/tracking/imu/imu.c

@@ -0,0 +1,29 @@
+#include "imu.h"
+#include <furi_hal.h>
+
+bool bmi160_begin();
+int bmi160_read(double* vec);
+
+bool lsm6ds3trc_begin();
+void lsm6ds3trc_end();
+int lsm6ds3trc_read(double* vec);
+
+bool imu_begin() {
+    furi_hal_i2c_acquire(&furi_hal_i2c_handle_external);
+    bool ret = bmi160_begin(); // lsm6ds3trc_begin();
+    furi_hal_i2c_release(&furi_hal_i2c_handle_external);
+    return ret;
+}
+
+void imu_end() {
+    // furi_hal_i2c_acquire(&furi_hal_i2c_handle_external);
+    // lsm6ds3trc_end();
+    // furi_hal_i2c_release(&furi_hal_i2c_handle_external);
+}
+
+int imu_read(double* vec) {
+    furi_hal_i2c_acquire(&furi_hal_i2c_handle_external);
+    int ret = bmi160_read(vec); // lsm6ds3trc_read(vec);
+    furi_hal_i2c_release(&furi_hal_i2c_handle_external);
+    return ret;
+}

+ 18 - 0
airmouse/tracking/imu/imu.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ACC_DATA_READY (1 << 0)
+#define GYR_DATA_READY (1 << 1)
+
+bool imu_begin();
+void imu_end();
+int imu_read(double* vec);
+
+#ifdef __cplusplus
+}
+#endif

+ 88 - 0
airmouse/tracking/imu/imu_bmi160.c

@@ -0,0 +1,88 @@
+#include "bmi160.h"
+
+#include <furi_hal.h>
+
+#include "imu.h"
+
+#define TAG "BMI160"
+
+#define BMI160_DEV_ADDR (0x69 << 1)
+
+static const double DEG_TO_RAD = 0.017453292519943295769236907684886;
+static const double G = 9.81;
+
+struct bmi160_dev bmi160dev;
+struct bmi160_sensor_data bmi160_accel;
+struct bmi160_sensor_data bmi160_gyro;
+
+int8_t bmi160_write_i2c(uint8_t dev_addr, uint8_t reg_addr, uint8_t* data, uint16_t len) {
+    if(furi_hal_i2c_write_mem(&furi_hal_i2c_handle_external, dev_addr, reg_addr, data, len, 50))
+        return BMI160_OK;
+    return BMI160_E_COM_FAIL;
+}
+
+int8_t bmi160_read_i2c(uint8_t dev_addr, uint8_t reg_addr, uint8_t* read_data, uint16_t len) {
+    if(furi_hal_i2c_read_mem(&furi_hal_i2c_handle_external, dev_addr, reg_addr, read_data, len, 50))
+        return BMI160_OK;
+    return BMI160_E_COM_FAIL;
+}
+
+bool bmi160_begin() {
+    FURI_LOG_I(TAG, "Init BMI160");
+
+    if(!furi_hal_i2c_is_device_ready(&furi_hal_i2c_handle_external, BMI160_DEV_ADDR, 50)) {
+        FURI_LOG_E(TAG, "Device not ready!");
+        return false;
+    }
+
+    FURI_LOG_I(TAG, "Device ready!");
+
+    bmi160dev.id = BMI160_DEV_ADDR;
+    bmi160dev.intf = BMI160_I2C_INTF;
+    bmi160dev.read = bmi160_read_i2c;
+    bmi160dev.write = bmi160_write_i2c;
+    bmi160dev.delay_ms = furi_delay_ms;
+
+    if(bmi160_init(&bmi160dev) != BMI160_OK) {
+        FURI_LOG_E(TAG, "Initialization failure!");
+        FURI_LOG_E(TAG, "Chip ID 0x%X", bmi160dev.chip_id);
+        return false;
+    }
+
+    bmi160dev.accel_cfg.odr = BMI160_ACCEL_ODR_400HZ;
+    bmi160dev.accel_cfg.range = BMI160_ACCEL_RANGE_4G;
+    bmi160dev.accel_cfg.bw = BMI160_ACCEL_BW_NORMAL_AVG4;
+    bmi160dev.accel_cfg.power = BMI160_ACCEL_NORMAL_MODE;
+    bmi160dev.gyro_cfg.odr = BMI160_GYRO_ODR_400HZ;
+    bmi160dev.gyro_cfg.range = BMI160_GYRO_RANGE_2000_DPS;
+    bmi160dev.gyro_cfg.bw = BMI160_GYRO_BW_NORMAL_MODE;
+    bmi160dev.gyro_cfg.power = BMI160_GYRO_NORMAL_MODE;
+
+    if(bmi160_set_sens_conf(&bmi160dev) != BMI160_OK) {
+        FURI_LOG_E(TAG, "Initialization failure!");
+        FURI_LOG_E(TAG, "Chip ID 0x%X", bmi160dev.chip_id);
+        return false;
+    }
+
+    FURI_LOG_I(TAG, "Initialization success!");
+    FURI_LOG_I(TAG, "Chip ID 0x%X", bmi160dev.chip_id);
+
+    return true;
+}
+
+int bmi160_read(double* vec) {
+    if(bmi160_get_sensor_data(
+           (BMI160_ACCEL_SEL | BMI160_GYRO_SEL), &bmi160_accel, &bmi160_gyro, &bmi160dev) !=
+       BMI160_OK) {
+        return 0;
+    }
+
+    vec[0] = ((double)bmi160_accel.x * 4 / 32768) * G;
+    vec[1] = ((double)bmi160_accel.y * 4 / 32768) * G;
+    vec[2] = ((double)bmi160_accel.z * 4 / 32768) * G;
+    vec[3] = ((double)bmi160_gyro.x * 2000 / 32768) * DEG_TO_RAD;
+    vec[4] = ((double)bmi160_gyro.y * 2000 / 32768) * DEG_TO_RAD;
+    vec[5] = ((double)bmi160_gyro.z * 2000 / 32768) * DEG_TO_RAD;
+
+    return ACC_DATA_READY | GYR_DATA_READY;
+}

+ 94 - 0
airmouse/tracking/imu/imu_lsm6ds3trc.c

@@ -0,0 +1,94 @@
+#include "lsm6ds3tr_c_reg.h"
+
+#include <furi_hal.h>
+
+#include "imu.h"
+
+#define TAG "LSM6DS3TR-C"
+
+#define LSM6DS3_ADDRESS (0x6A << 1)
+
+static const double DEG_TO_RAD = 0.017453292519943295769236907684886;
+
+stmdev_ctx_t lsm6ds3trc_ctx;
+
+int32_t lsm6ds3trc_write_i2c(void* handle, uint8_t reg_addr, const uint8_t* data, uint16_t len) {
+    if(furi_hal_i2c_write_mem(handle, LSM6DS3_ADDRESS, reg_addr, (uint8_t*)data, len, 50))
+        return 0;
+    return -1;
+}
+
+int32_t lsm6ds3trc_read_i2c(void* handle, uint8_t reg_addr, uint8_t* read_data, uint16_t len) {
+    if(furi_hal_i2c_read_mem(handle, LSM6DS3_ADDRESS, reg_addr, read_data, len, 50)) return 0;
+    return -1;
+}
+
+bool lsm6ds3trc_begin() {
+    FURI_LOG_I(TAG, "Init LSM6DS3TR-C");
+
+    if(!furi_hal_i2c_is_device_ready(&furi_hal_i2c_handle_external, LSM6DS3_ADDRESS, 50)) {
+        FURI_LOG_E(TAG, "Not ready");
+        return false;
+    }
+
+    lsm6ds3trc_ctx.write_reg = lsm6ds3trc_write_i2c;
+    lsm6ds3trc_ctx.read_reg = lsm6ds3trc_read_i2c;
+    lsm6ds3trc_ctx.mdelay = furi_delay_ms;
+    lsm6ds3trc_ctx.handle = &furi_hal_i2c_handle_external;
+
+    uint8_t whoami;
+    lsm6ds3tr_c_device_id_get(&lsm6ds3trc_ctx, &whoami);
+    if(whoami != LSM6DS3TR_C_ID) {
+        FURI_LOG_I(TAG, "Unknown model: %x", (int)whoami);
+        return false;
+    }
+
+    lsm6ds3tr_c_reset_set(&lsm6ds3trc_ctx, PROPERTY_ENABLE);
+    uint8_t rst = PROPERTY_ENABLE;
+    while(rst) lsm6ds3tr_c_reset_get(&lsm6ds3trc_ctx, &rst);
+
+    lsm6ds3tr_c_block_data_update_set(&lsm6ds3trc_ctx, PROPERTY_ENABLE);
+    lsm6ds3tr_c_fifo_mode_set(&lsm6ds3trc_ctx, LSM6DS3TR_C_BYPASS_MODE);
+
+    lsm6ds3tr_c_xl_data_rate_set(&lsm6ds3trc_ctx, LSM6DS3TR_C_XL_ODR_104Hz);
+    lsm6ds3tr_c_xl_full_scale_set(&lsm6ds3trc_ctx, LSM6DS3TR_C_4g);
+    lsm6ds3tr_c_xl_lp1_bandwidth_set(&lsm6ds3trc_ctx, LSM6DS3TR_C_XL_LP1_ODR_DIV_4);
+
+    lsm6ds3tr_c_gy_data_rate_set(&lsm6ds3trc_ctx, LSM6DS3TR_C_GY_ODR_104Hz);
+    lsm6ds3tr_c_gy_full_scale_set(&lsm6ds3trc_ctx, LSM6DS3TR_C_2000dps);
+    lsm6ds3tr_c_gy_power_mode_set(&lsm6ds3trc_ctx, LSM6DS3TR_C_GY_HIGH_PERFORMANCE);
+    lsm6ds3tr_c_gy_band_pass_set(&lsm6ds3trc_ctx, LSM6DS3TR_C_LP2_ONLY);
+
+    FURI_LOG_I(TAG, "Init OK");
+    return true;
+}
+
+void lsm6ds3trc_end() {
+    lsm6ds3tr_c_xl_data_rate_set(&lsm6ds3trc_ctx, LSM6DS3TR_C_XL_ODR_OFF);
+    lsm6ds3tr_c_gy_data_rate_set(&lsm6ds3trc_ctx, LSM6DS3TR_C_GY_ODR_OFF);
+}
+
+int lsm6ds3trc_read(double* vec) {
+    int ret = 0;
+    int16_t data[3];
+    lsm6ds3tr_c_reg_t reg;
+    lsm6ds3tr_c_status_reg_get(&lsm6ds3trc_ctx, &reg.status_reg);
+
+    if(reg.status_reg.xlda) {
+        lsm6ds3tr_c_acceleration_raw_get(&lsm6ds3trc_ctx, data);
+        vec[2] = (double)lsm6ds3tr_c_from_fs2g_to_mg(data[0]) / 1000;
+        vec[0] = (double)lsm6ds3tr_c_from_fs2g_to_mg(data[1]) / 1000;
+        vec[1] = (double)lsm6ds3tr_c_from_fs2g_to_mg(data[2]) / 1000;
+        ret |= ACC_DATA_READY;
+    }
+
+    if(reg.status_reg.gda) {
+        lsm6ds3tr_c_angular_rate_raw_get(&lsm6ds3trc_ctx, data);
+        vec[5] = (double)lsm6ds3tr_c_from_fs2000dps_to_mdps(data[0]) * DEG_TO_RAD / 1000;
+        vec[3] = (double)lsm6ds3tr_c_from_fs2000dps_to_mdps(data[1]) * DEG_TO_RAD / 1000;
+        vec[4] = (double)lsm6ds3tr_c_from_fs2000dps_to_mdps(data[2]) * DEG_TO_RAD / 1000;
+        ret |= GYR_DATA_READY;
+    }
+
+    return ret;
+}

+ 7105 - 0
airmouse/tracking/imu/lsm6ds3tr_c_reg.c

@@ -0,0 +1,7105 @@
+/**
+  ******************************************************************************
+  * @file    lsm6ds3tr_c_reg.c
+  * @author  Sensors Software Solution Team
+  * @brief   LSM6DS3TR_C driver file
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+
+#include "lsm6ds3tr_c_reg.h"
+
+/**
+  * @defgroup    LSM6DS3TR_C
+  * @brief       This file provides a set of functions needed to drive the
+  *              lsm6ds3tr_c enanced inertial module.
+  * @{
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_interfaces_functions
+  * @brief       This section provide a set of functions used to read and
+  *              write a generic register of the device.
+  *              MANDATORY: return 0 -> no Error.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Read generic device register
+  *
+  * @param  ctx   read / write interface definitions(ptr)
+  * @param  reg   register to read
+  * @param  data  pointer to buffer that store the data read(ptr)
+  * @param  len   number of consecutive register to read
+  * @retval       interface status (MANDATORY: return 0 -> no Error)
+  *
+  */
+int32_t lsm6ds3tr_c_read_reg(stmdev_ctx_t* ctx, uint8_t reg, uint8_t* data, uint16_t len) {
+    int32_t ret;
+
+    ret = ctx->read_reg(ctx->handle, reg, data, len);
+
+    return ret;
+}
+
+/**
+  * @brief  Write generic device register
+  *
+  * @param  ctx   read / write interface definitions(ptr)
+  * @param  reg   register to write
+  * @param  data  pointer to data to write in register reg(ptr)
+  * @param  len   number of consecutive register to write
+  * @retval       interface status (MANDATORY: return 0 -> no Error)
+  *
+  */
+int32_t lsm6ds3tr_c_write_reg(stmdev_ctx_t* ctx, uint8_t reg, uint8_t* data, uint16_t len) {
+    int32_t ret;
+
+    ret = ctx->write_reg(ctx->handle, reg, data, len);
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_Sensitivity
+  * @brief       These functions convert raw-data into engineering units.
+  * @{
+  *
+  */
+
+float_t lsm6ds3tr_c_from_fs2g_to_mg(int16_t lsb) {
+    return ((float_t)lsb * 0.061f);
+}
+
+float_t lsm6ds3tr_c_from_fs4g_to_mg(int16_t lsb) {
+    return ((float_t)lsb * 0.122f);
+}
+
+float_t lsm6ds3tr_c_from_fs8g_to_mg(int16_t lsb) {
+    return ((float_t)lsb * 0.244f);
+}
+
+float_t lsm6ds3tr_c_from_fs16g_to_mg(int16_t lsb) {
+    return ((float_t)lsb * 0.488f);
+}
+
+float_t lsm6ds3tr_c_from_fs125dps_to_mdps(int16_t lsb) {
+    return ((float_t)lsb * 4.375f);
+}
+
+float_t lsm6ds3tr_c_from_fs250dps_to_mdps(int16_t lsb) {
+    return ((float_t)lsb * 8.750f);
+}
+
+float_t lsm6ds3tr_c_from_fs500dps_to_mdps(int16_t lsb) {
+    return ((float_t)lsb * 17.50f);
+}
+
+float_t lsm6ds3tr_c_from_fs1000dps_to_mdps(int16_t lsb) {
+    return ((float_t)lsb * 35.0f);
+}
+
+float_t lsm6ds3tr_c_from_fs2000dps_to_mdps(int16_t lsb) {
+    return ((float_t)lsb * 70.0f);
+}
+
+float_t lsm6ds3tr_c_from_lsb_to_celsius(int16_t lsb) {
+    return (((float_t)lsb / 256.0f) + 25.0f);
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_data_generation
+  * @brief       This section groups all the functions concerning data
+  *              generation
+  * @{
+  *
+  */
+
+/**
+  * @brief  Accelerometer full-scale selection.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of fs_xl in reg CTRL1_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_full_scale_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_fs_xl_t val) {
+    lsm6ds3tr_c_ctrl1_xl_t ctrl1_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+
+    if(ret == 0) {
+        ctrl1_xl.fs_xl = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Accelerometer full-scale selection.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of fs_xl in reg CTRL1_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_full_scale_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_fs_xl_t* val) {
+    lsm6ds3tr_c_ctrl1_xl_t ctrl1_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+
+    switch(ctrl1_xl.fs_xl) {
+    case LSM6DS3TR_C_2g:
+        *val = LSM6DS3TR_C_2g;
+        break;
+
+    case LSM6DS3TR_C_16g:
+        *val = LSM6DS3TR_C_16g;
+        break;
+
+    case LSM6DS3TR_C_4g:
+        *val = LSM6DS3TR_C_4g;
+        break;
+
+    case LSM6DS3TR_C_8g:
+        *val = LSM6DS3TR_C_8g;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_XL_FS_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Accelerometer data rate selection.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of odr_xl in reg CTRL1_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_data_rate_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_xl_t val) {
+    lsm6ds3tr_c_ctrl1_xl_t ctrl1_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+
+    if(ret == 0) {
+        ctrl1_xl.odr_xl = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Accelerometer data rate selection.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of odr_xl in reg CTRL1_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_data_rate_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_xl_t* val) {
+    lsm6ds3tr_c_ctrl1_xl_t ctrl1_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+
+    switch(ctrl1_xl.odr_xl) {
+    case LSM6DS3TR_C_XL_ODR_OFF:
+        *val = LSM6DS3TR_C_XL_ODR_OFF;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_12Hz5:
+        *val = LSM6DS3TR_C_XL_ODR_12Hz5;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_26Hz:
+        *val = LSM6DS3TR_C_XL_ODR_26Hz;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_52Hz:
+        *val = LSM6DS3TR_C_XL_ODR_52Hz;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_104Hz:
+        *val = LSM6DS3TR_C_XL_ODR_104Hz;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_208Hz:
+        *val = LSM6DS3TR_C_XL_ODR_208Hz;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_416Hz:
+        *val = LSM6DS3TR_C_XL_ODR_416Hz;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_833Hz:
+        *val = LSM6DS3TR_C_XL_ODR_833Hz;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_1k66Hz:
+        *val = LSM6DS3TR_C_XL_ODR_1k66Hz;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_3k33Hz:
+        *val = LSM6DS3TR_C_XL_ODR_3k33Hz;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_6k66Hz:
+        *val = LSM6DS3TR_C_XL_ODR_6k66Hz;
+        break;
+
+    case LSM6DS3TR_C_XL_ODR_1Hz6:
+        *val = LSM6DS3TR_C_XL_ODR_1Hz6;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_XL_ODR_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Gyroscope chain full-scale selection.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of fs_g in reg CTRL2_G
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_full_scale_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_fs_g_t val) {
+    lsm6ds3tr_c_ctrl2_g_t ctrl2_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL2_G, (uint8_t*)&ctrl2_g, 1);
+
+    if(ret == 0) {
+        ctrl2_g.fs_g = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL2_G, (uint8_t*)&ctrl2_g, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Gyroscope chain full-scale selection.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of fs_g in reg CTRL2_G
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_full_scale_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_fs_g_t* val) {
+    lsm6ds3tr_c_ctrl2_g_t ctrl2_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL2_G, (uint8_t*)&ctrl2_g, 1);
+
+    switch(ctrl2_g.fs_g) {
+    case LSM6DS3TR_C_250dps:
+        *val = LSM6DS3TR_C_250dps;
+        break;
+
+    case LSM6DS3TR_C_125dps:
+        *val = LSM6DS3TR_C_125dps;
+        break;
+
+    case LSM6DS3TR_C_500dps:
+        *val = LSM6DS3TR_C_500dps;
+        break;
+
+    case LSM6DS3TR_C_1000dps:
+        *val = LSM6DS3TR_C_1000dps;
+        break;
+
+    case LSM6DS3TR_C_2000dps:
+        *val = LSM6DS3TR_C_2000dps;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_GY_FS_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Gyroscope data rate selection.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of odr_g in reg CTRL2_G
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_data_rate_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_g_t val) {
+    lsm6ds3tr_c_ctrl2_g_t ctrl2_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL2_G, (uint8_t*)&ctrl2_g, 1);
+
+    if(ret == 0) {
+        ctrl2_g.odr_g = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL2_G, (uint8_t*)&ctrl2_g, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Gyroscope data rate selection.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of odr_g in reg CTRL2_G
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_data_rate_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_g_t* val) {
+    lsm6ds3tr_c_ctrl2_g_t ctrl2_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL2_G, (uint8_t*)&ctrl2_g, 1);
+
+    switch(ctrl2_g.odr_g) {
+    case LSM6DS3TR_C_GY_ODR_OFF:
+        *val = LSM6DS3TR_C_GY_ODR_OFF;
+        break;
+
+    case LSM6DS3TR_C_GY_ODR_12Hz5:
+        *val = LSM6DS3TR_C_GY_ODR_12Hz5;
+        break;
+
+    case LSM6DS3TR_C_GY_ODR_26Hz:
+        *val = LSM6DS3TR_C_GY_ODR_26Hz;
+        break;
+
+    case LSM6DS3TR_C_GY_ODR_52Hz:
+        *val = LSM6DS3TR_C_GY_ODR_52Hz;
+        break;
+
+    case LSM6DS3TR_C_GY_ODR_104Hz:
+        *val = LSM6DS3TR_C_GY_ODR_104Hz;
+        break;
+
+    case LSM6DS3TR_C_GY_ODR_208Hz:
+        *val = LSM6DS3TR_C_GY_ODR_208Hz;
+        break;
+
+    case LSM6DS3TR_C_GY_ODR_416Hz:
+        *val = LSM6DS3TR_C_GY_ODR_416Hz;
+        break;
+
+    case LSM6DS3TR_C_GY_ODR_833Hz:
+        *val = LSM6DS3TR_C_GY_ODR_833Hz;
+        break;
+
+    case LSM6DS3TR_C_GY_ODR_1k66Hz:
+        *val = LSM6DS3TR_C_GY_ODR_1k66Hz;
+        break;
+
+    case LSM6DS3TR_C_GY_ODR_3k33Hz:
+        *val = LSM6DS3TR_C_GY_ODR_3k33Hz;
+        break;
+
+    case LSM6DS3TR_C_GY_ODR_6k66Hz:
+        *val = LSM6DS3TR_C_GY_ODR_6k66Hz;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_GY_ODR_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Block data update.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of bdu in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_block_data_update_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    if(ret == 0) {
+        ctrl3_c.bdu = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Block data update.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of bdu in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_block_data_update_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    *val = ctrl3_c.bdu;
+
+    return ret;
+}
+
+/**
+  * @brief  Weight of XL user offset bits of registers
+  *         X_OFS_USR(73h), Y_OFS_USR(74h), Z_OFS_USR(75h).[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of usr_off_w in reg CTRL6_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_offset_weight_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_usr_off_w_t val) {
+    lsm6ds3tr_c_ctrl6_c_t ctrl6_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+
+    if(ret == 0) {
+        ctrl6_c.usr_off_w = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Weight of XL user offset bits of registers
+  *         X_OFS_USR(73h), Y_OFS_USR(74h), Z_OFS_USR(75h).[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of usr_off_w in reg CTRL6_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_offset_weight_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_usr_off_w_t* val) {
+    lsm6ds3tr_c_ctrl6_c_t ctrl6_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+
+    switch(ctrl6_c.usr_off_w) {
+    case LSM6DS3TR_C_LSb_1mg:
+        *val = LSM6DS3TR_C_LSb_1mg;
+        break;
+
+    case LSM6DS3TR_C_LSb_16mg:
+        *val = LSM6DS3TR_C_LSb_16mg;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_WEIGHT_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  High-performance operating mode for accelerometer[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of xl_hm_mode in reg CTRL6_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_power_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_xl_hm_mode_t val) {
+    lsm6ds3tr_c_ctrl6_c_t ctrl6_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+
+    if(ret == 0) {
+        ctrl6_c.xl_hm_mode = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  High-performance operating mode for accelerometer.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of xl_hm_mode in reg CTRL6_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_power_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_xl_hm_mode_t* val) {
+    lsm6ds3tr_c_ctrl6_c_t ctrl6_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+
+    switch(ctrl6_c.xl_hm_mode) {
+    case LSM6DS3TR_C_XL_HIGH_PERFORMANCE:
+        *val = LSM6DS3TR_C_XL_HIGH_PERFORMANCE;
+        break;
+
+    case LSM6DS3TR_C_XL_NORMAL:
+        *val = LSM6DS3TR_C_XL_NORMAL;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_XL_PW_MODE_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Source register rounding function on WAKE_UP_SRC (1Bh),
+  *         TAP_SRC (1Ch), D6D_SRC (1Dh), STATUS_REG (1Eh) and
+  *         FUNC_SRC1 (53h) registers in the primary interface.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of rounding_status in reg CTRL7_G
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_rounding_on_status_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_rounding_status_t val) {
+    lsm6ds3tr_c_ctrl7_g_t ctrl7_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL7_G, (uint8_t*)&ctrl7_g, 1);
+
+    if(ret == 0) {
+        ctrl7_g.rounding_status = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL7_G, (uint8_t*)&ctrl7_g, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Source register rounding function on WAKE_UP_SRC (1Bh),
+  *         TAP_SRC (1Ch), D6D_SRC (1Dh), STATUS_REG (1Eh) and
+  *         FUNC_SRC1 (53h) registers in the primary interface.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of rounding_status in reg CTRL7_G
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_rounding_on_status_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_rounding_status_t* val) {
+    lsm6ds3tr_c_ctrl7_g_t ctrl7_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL7_G, (uint8_t*)&ctrl7_g, 1);
+
+    switch(ctrl7_g.rounding_status) {
+    case LSM6DS3TR_C_STAT_RND_DISABLE:
+        *val = LSM6DS3TR_C_STAT_RND_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_STAT_RND_ENABLE:
+        *val = LSM6DS3TR_C_STAT_RND_ENABLE;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_STAT_RND_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  High-performance operating mode disable for gyroscope.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of g_hm_mode in reg CTRL7_G
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_power_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_g_hm_mode_t val) {
+    lsm6ds3tr_c_ctrl7_g_t ctrl7_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL7_G, (uint8_t*)&ctrl7_g, 1);
+
+    if(ret == 0) {
+        ctrl7_g.g_hm_mode = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL7_G, (uint8_t*)&ctrl7_g, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  High-performance operating mode disable for gyroscope.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of g_hm_mode in reg CTRL7_G
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_power_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_g_hm_mode_t* val) {
+    lsm6ds3tr_c_ctrl7_g_t ctrl7_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL7_G, (uint8_t*)&ctrl7_g, 1);
+
+    switch(ctrl7_g.g_hm_mode) {
+    case LSM6DS3TR_C_GY_HIGH_PERFORMANCE:
+        *val = LSM6DS3TR_C_GY_HIGH_PERFORMANCE;
+        break;
+
+    case LSM6DS3TR_C_GY_NORMAL:
+        *val = LSM6DS3TR_C_GY_NORMAL;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_GY_PW_MODE_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Read all the interrupt/status flag of the device.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    WAKE_UP_SRC, TAP_SRC, D6D_SRC, STATUS_REG,
+  *                FUNC_SRC1, FUNC_SRC2, WRIST_TILT_IA, A_WRIST_TILT_Mask
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_all_sources_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_all_sources_t* val) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_SRC, (uint8_t*)&(val->wake_up_src), 1);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_SRC, (uint8_t*)&(val->tap_src), 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_D6D_SRC, (uint8_t*)&(val->d6d_src), 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_STATUS_REG, (uint8_t*)&(val->status_reg), 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FUNC_SRC1, (uint8_t*)&(val->func_src1), 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FUNC_SRC2, (uint8_t*)&(val->func_src2), 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(
+            ctx, LSM6DS3TR_C_WRIST_TILT_IA, (uint8_t*)&(val->wrist_tilt_ia), 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_B);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(
+            ctx, LSM6DS3TR_C_A_WRIST_TILT_MASK, (uint8_t*)&(val->a_wrist_tilt_mask), 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+    }
+
+    return ret;
+}
+/**
+  * @brief  The STATUS_REG register is read by the primary interface[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Registers STATUS_REG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_status_reg_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_status_reg_t* val) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_STATUS_REG, (uint8_t*)val, 1);
+
+    return ret;
+}
+
+/**
+  * @brief  Accelerometer new data available.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of xlda in reg STATUS_REG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_flag_data_ready_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_status_reg_t status_reg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_STATUS_REG, (uint8_t*)&status_reg, 1);
+    *val = status_reg.xlda;
+
+    return ret;
+}
+
+/**
+  * @brief  Gyroscope new data available.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of gda in reg STATUS_REG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_flag_data_ready_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_status_reg_t status_reg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_STATUS_REG, (uint8_t*)&status_reg, 1);
+    *val = status_reg.gda;
+
+    return ret;
+}
+
+/**
+  * @brief  Temperature new data available.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tda in reg STATUS_REG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_temp_flag_data_ready_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_status_reg_t status_reg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_STATUS_REG, (uint8_t*)&status_reg, 1);
+    *val = status_reg.tda;
+
+    return ret;
+}
+
+/**
+  * @brief  Accelerometer axis user offset correction expressed in two’s
+  *         complement, weight depends on USR_OFF_W in CTRL6_C.
+  *         The value must be in the range [-127 127].[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that contains data to write
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_usr_offset_set(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_X_OFS_USR, buff, 3);
+
+    return ret;
+}
+
+/**
+  * @brief  Accelerometer axis user offset correction xpressed in two’s
+  *         complement, weight depends on USR_OFF_W in CTRL6_C.
+  *         The value must be in the range [-127 127].[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_usr_offset_get(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_X_OFS_USR, buff, 3);
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_Timestamp
+  * @brief       This section groups all the functions that manage the
+  *              timestamp generation.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Enable timestamp count. The count is saved in TIMESTAMP0_REG (40h),
+  *         TIMESTAMP1_REG (41h) and TIMESTAMP2_REG (42h).[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of timer_en in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_timestamp_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+
+    if(ret == 0) {
+        ctrl10_c.timer_en = val;
+
+        if(val != 0x00U) {
+            ctrl10_c.func_en = val;
+            ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable timestamp count. The count is saved in TIMESTAMP0_REG (40h),
+  *         TIMESTAMP1_REG (41h) and TIMESTAMP2_REG (42h).[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of timer_en in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_timestamp_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    *val = ctrl10_c.timer_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Timestamp register resolution setting.
+  *         Configuration of this bit affects
+  *         TIMESTAMP0_REG(40h), TIMESTAMP1_REG(41h),
+  *         TIMESTAMP2_REG(42h), STEP_TIMESTAMP_L(49h),
+  *         STEP_TIMESTAMP_H(4Ah) and
+  *         STEP_COUNT_DELTA(15h) registers.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of timer_hr in reg WAKE_UP_DUR
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_timestamp_res_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_timer_hr_t val) {
+    lsm6ds3tr_c_wake_up_dur_t wake_up_dur;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+
+    if(ret == 0) {
+        wake_up_dur.timer_hr = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Timestamp register resolution setting.
+  *         Configuration of this bit affects
+  *         TIMESTAMP0_REG(40h), TIMESTAMP1_REG(41h),
+  *         TIMESTAMP2_REG(42h), STEP_TIMESTAMP_L(49h),
+  *         STEP_TIMESTAMP_H(4Ah) and
+  *         STEP_COUNT_DELTA(15h) registers.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of timer_hr in reg WAKE_UP_DUR
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_timestamp_res_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_timer_hr_t* val) {
+    lsm6ds3tr_c_wake_up_dur_t wake_up_dur;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+
+    switch(wake_up_dur.timer_hr) {
+    case LSM6DS3TR_C_LSB_6ms4:
+        *val = LSM6DS3TR_C_LSB_6ms4;
+        break;
+
+    case LSM6DS3TR_C_LSB_25us:
+        *val = LSM6DS3TR_C_LSB_25us;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_TS_RES_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_Dataoutput
+  * @brief       This section groups all the data output functions.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Circular burst-mode (rounding) read from output registers
+  *         through the primary interface.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of rounding in reg CTRL5_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_rounding_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_rounding_t val) {
+    lsm6ds3tr_c_ctrl5_c_t ctrl5_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+
+    if(ret == 0) {
+        ctrl5_c.rounding = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Circular burst-mode (rounding) read from output registers
+  *         through the primary interface.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of rounding in reg CTRL5_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_rounding_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_rounding_t* val) {
+    lsm6ds3tr_c_ctrl5_c_t ctrl5_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+
+    switch(ctrl5_c.rounding) {
+    case LSM6DS3TR_C_ROUND_DISABLE:
+        *val = LSM6DS3TR_C_ROUND_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_ROUND_XL:
+        *val = LSM6DS3TR_C_ROUND_XL;
+        break;
+
+    case LSM6DS3TR_C_ROUND_GY:
+        *val = LSM6DS3TR_C_ROUND_GY;
+        break;
+
+    case LSM6DS3TR_C_ROUND_GY_XL:
+        *val = LSM6DS3TR_C_ROUND_GY_XL;
+        break;
+
+    case LSM6DS3TR_C_ROUND_SH1_TO_SH6:
+        *val = LSM6DS3TR_C_ROUND_SH1_TO_SH6;
+        break;
+
+    case LSM6DS3TR_C_ROUND_XL_SH1_TO_SH6:
+        *val = LSM6DS3TR_C_ROUND_XL_SH1_TO_SH6;
+        break;
+
+    case LSM6DS3TR_C_ROUND_GY_XL_SH1_TO_SH12:
+        *val = LSM6DS3TR_C_ROUND_GY_XL_SH1_TO_SH12;
+        break;
+
+    case LSM6DS3TR_C_ROUND_GY_XL_SH1_TO_SH6:
+        *val = LSM6DS3TR_C_ROUND_GY_XL_SH1_TO_SH6;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_ROUND_OUT_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Temperature data output register (r). L and H registers together
+  *         express a 16-bit word in two’s complement.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_temperature_raw_get(stmdev_ctx_t* ctx, int16_t* val) {
+    uint8_t buff[2];
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_OUT_TEMP_L, buff, 2);
+    *val = (int16_t)buff[1];
+    *val = (*val * 256) + (int16_t)buff[0];
+
+    return ret;
+}
+
+/**
+  * @brief  Angular rate sensor. The value is expressed as a 16-bit word in
+  *         two’s complement.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_angular_rate_raw_get(stmdev_ctx_t* ctx, int16_t* val) {
+    uint8_t buff[6];
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_OUTX_L_G, buff, 6);
+    val[0] = (int16_t)buff[1];
+    val[0] = (val[0] * 256) + (int16_t)buff[0];
+    val[1] = (int16_t)buff[3];
+    val[1] = (val[1] * 256) + (int16_t)buff[2];
+    val[2] = (int16_t)buff[5];
+    val[2] = (val[2] * 256) + (int16_t)buff[4];
+
+    return ret;
+}
+
+/**
+  * @brief  Linear acceleration output register. The value is expressed
+  *         as a 16-bit word in two’s complement.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_acceleration_raw_get(stmdev_ctx_t* ctx, int16_t* val) {
+    uint8_t buff[6];
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_OUTX_L_XL, buff, 6);
+    val[0] = (int16_t)buff[1];
+    val[0] = (val[0] * 256) + (int16_t)buff[0];
+    val[1] = (int16_t)buff[3];
+    val[1] = (val[1] * 256) + (int16_t)buff[2];
+    val[2] = (int16_t)buff[5];
+    val[2] = (val[2] * 256) + (int16_t)buff[4];
+
+    return ret;
+}
+
+/**
+  * @brief  External magnetometer raw data.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mag_calibrated_raw_get(stmdev_ctx_t* ctx, int16_t* val) {
+    uint8_t buff[6];
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_OUT_MAG_RAW_X_L, buff, 6);
+    val[0] = (int16_t)buff[1];
+    val[0] = (val[0] * 256) + (int16_t)buff[0];
+    val[1] = (int16_t)buff[3];
+    val[1] = (val[1] * 256) + (int16_t)buff[2];
+    val[2] = (int16_t)buff[5];
+    val[2] = (val[2] * 256) + (int16_t)buff[4];
+
+    return ret;
+}
+
+/**
+  * @brief  Read data in FIFO.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buffer Data buffer to store FIFO data.
+  * @param  len    Number of data to read from FIFO.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_raw_data_get(stmdev_ctx_t* ctx, uint8_t* buffer, uint8_t len) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_DATA_OUT_L, buffer, len);
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_common
+  * @brief       This section groups common useful functions.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Enable access to the embedded functions/sensor hub
+  *         configuration registers[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of func_cfg_en in reg FUNC_CFG_ACCESS
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mem_bank_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_func_cfg_en_t val) {
+    lsm6ds3tr_c_func_cfg_access_t func_cfg_access;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FUNC_CFG_ACCESS, (uint8_t*)&func_cfg_access, 1);
+
+    if(ret == 0) {
+        func_cfg_access.func_cfg_en = (uint8_t)val;
+        ret =
+            lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FUNC_CFG_ACCESS, (uint8_t*)&func_cfg_access, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable access to the embedded functions/sensor hub configuration
+  *         registers[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of func_cfg_en in reg FUNC_CFG_ACCESS
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mem_bank_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_func_cfg_en_t* val) {
+    lsm6ds3tr_c_func_cfg_access_t func_cfg_access;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FUNC_CFG_ACCESS, (uint8_t*)&func_cfg_access, 1);
+
+    switch(func_cfg_access.func_cfg_en) {
+    case LSM6DS3TR_C_USER_BANK:
+        *val = LSM6DS3TR_C_USER_BANK;
+        break;
+
+    case LSM6DS3TR_C_BANK_B:
+        *val = LSM6DS3TR_C_BANK_B;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_BANK_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Data-ready pulsed / letched mode[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of drdy_pulsed in reg DRDY_PULSE_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_data_ready_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_drdy_pulsed_g_t val) {
+    lsm6ds3tr_c_drdy_pulse_cfg_g_t drdy_pulse_cfg_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_DRDY_PULSE_CFG_G, (uint8_t*)&drdy_pulse_cfg_g, 1);
+
+    if(ret == 0) {
+        drdy_pulse_cfg_g.drdy_pulsed = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(
+            ctx, LSM6DS3TR_C_DRDY_PULSE_CFG_G, (uint8_t*)&drdy_pulse_cfg_g, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Data-ready pulsed / letched mode[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of drdy_pulsed in reg DRDY_PULSE_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_data_ready_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_drdy_pulsed_g_t* val) {
+    lsm6ds3tr_c_drdy_pulse_cfg_g_t drdy_pulse_cfg_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_DRDY_PULSE_CFG_G, (uint8_t*)&drdy_pulse_cfg_g, 1);
+
+    switch(drdy_pulse_cfg_g.drdy_pulsed) {
+    case LSM6DS3TR_C_DRDY_LATCHED:
+        *val = LSM6DS3TR_C_DRDY_LATCHED;
+        break;
+
+    case LSM6DS3TR_C_DRDY_PULSED:
+        *val = LSM6DS3TR_C_DRDY_PULSED;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_DRDY_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  DeviceWhoamI.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_device_id_get(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WHO_AM_I, buff, 1);
+
+    return ret;
+}
+
+/**
+  * @brief  Software reset. Restore the default values in user registers[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of sw_reset in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_reset_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    if(ret == 0) {
+        ctrl3_c.sw_reset = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Software reset. Restore the default values in user registers[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of sw_reset in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_reset_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    *val = ctrl3_c.sw_reset;
+
+    return ret;
+}
+
+/**
+  * @brief  Big/Little Endian Data selection.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of ble in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_data_format_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_ble_t val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    if(ret == 0) {
+        ctrl3_c.ble = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Big/Little Endian Data selection.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of ble in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_data_format_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_ble_t* val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    switch(ctrl3_c.ble) {
+    case LSM6DS3TR_C_LSB_AT_LOW_ADD:
+        *val = LSM6DS3TR_C_LSB_AT_LOW_ADD;
+        break;
+
+    case LSM6DS3TR_C_MSB_AT_LOW_ADD:
+        *val = LSM6DS3TR_C_MSB_AT_LOW_ADD;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_DATA_FMT_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Register address automatically incremented during a multiple byte
+  *         access with a serial interface.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of if_inc in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_auto_increment_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    if(ret == 0) {
+        ctrl3_c.if_inc = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Register address automatically incremented during a multiple byte
+  *         access with a serial interface.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of if_inc in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_auto_increment_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    *val = ctrl3_c.if_inc;
+
+    return ret;
+}
+
+/**
+  * @brief  Reboot memory content. Reload the calibration parameters.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of boot in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_boot_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    if(ret == 0) {
+        ctrl3_c.boot = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Reboot memory content. Reload the calibration parameters.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of boot in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_boot_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    *val = ctrl3_c.boot;
+
+    return ret;
+}
+
+/**
+  * @brief  Linear acceleration sensor self-test enable.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of st_xl in reg CTRL5_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_self_test_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_st_xl_t val) {
+    lsm6ds3tr_c_ctrl5_c_t ctrl5_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+
+    if(ret == 0) {
+        ctrl5_c.st_xl = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Linear acceleration sensor self-test enable.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of st_xl in reg CTRL5_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_self_test_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_st_xl_t* val) {
+    lsm6ds3tr_c_ctrl5_c_t ctrl5_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+
+    switch(ctrl5_c.st_xl) {
+    case LSM6DS3TR_C_XL_ST_DISABLE:
+        *val = LSM6DS3TR_C_XL_ST_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_XL_ST_POSITIVE:
+        *val = LSM6DS3TR_C_XL_ST_POSITIVE;
+        break;
+
+    case LSM6DS3TR_C_XL_ST_NEGATIVE:
+        *val = LSM6DS3TR_C_XL_ST_NEGATIVE;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_XL_ST_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Angular rate sensor self-test enable.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of st_g in reg CTRL5_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_self_test_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_st_g_t val) {
+    lsm6ds3tr_c_ctrl5_c_t ctrl5_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+
+    if(ret == 0) {
+        ctrl5_c.st_g = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Angular rate sensor self-test enable.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of st_g in reg CTRL5_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_self_test_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_st_g_t* val) {
+    lsm6ds3tr_c_ctrl5_c_t ctrl5_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+
+    switch(ctrl5_c.st_g) {
+    case LSM6DS3TR_C_GY_ST_DISABLE:
+        *val = LSM6DS3TR_C_GY_ST_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_GY_ST_POSITIVE:
+        *val = LSM6DS3TR_C_GY_ST_POSITIVE;
+        break;
+
+    case LSM6DS3TR_C_GY_ST_NEGATIVE:
+        *val = LSM6DS3TR_C_GY_ST_NEGATIVE;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_GY_ST_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_filters
+  * @brief       This section group all the functions concerning the filters
+  *              configuration that impact both accelerometer and gyro.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Mask DRDY on pin (both XL & Gyro) until filter settling ends
+  *         (XL and Gyro independently masked).[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of drdy_mask in reg CTRL4_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_filter_settling_mask_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+
+    if(ret == 0) {
+        ctrl4_c.drdy_mask = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Mask DRDY on pin (both XL & Gyro) until filter settling ends
+  *         (XL and Gyro independently masked).[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of drdy_mask in reg CTRL4_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_filter_settling_mask_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+    *val = ctrl4_c.drdy_mask;
+
+    return ret;
+}
+
+/**
+  * @brief  HPF or SLOPE filter selection on wake-up and Activity/Inactivity
+  *         functions.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of slope_fds in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_hp_path_internal_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_slope_fds_t val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+    if(ret == 0) {
+        tap_cfg.slope_fds = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  HPF or SLOPE filter selection on wake-up and Activity/Inactivity
+  *         functions.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of slope_fds in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_hp_path_internal_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_slope_fds_t* val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+    switch(tap_cfg.slope_fds) {
+    case LSM6DS3TR_C_USE_SLOPE:
+        *val = LSM6DS3TR_C_USE_SLOPE;
+        break;
+
+    case LSM6DS3TR_C_USE_HPF:
+        *val = LSM6DS3TR_C_USE_HPF;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_HP_PATH_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_accelerometer_filters
+  * @brief       This section group all the functions concerning the filters
+  *              configuration that impact accelerometer in every mode.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Accelerometer analog chain bandwidth selection (only for
+  *         accelerometer ODR ≥ 1.67 kHz).[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of bw0_xl in reg CTRL1_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_filter_analog_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_bw0_xl_t val) {
+    lsm6ds3tr_c_ctrl1_xl_t ctrl1_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+
+    if(ret == 0) {
+        ctrl1_xl.bw0_xl = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Accelerometer analog chain bandwidth selection (only for
+  *         accelerometer ODR ≥ 1.67 kHz).[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of bw0_xl in reg CTRL1_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_filter_analog_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_bw0_xl_t* val) {
+    lsm6ds3tr_c_ctrl1_xl_t ctrl1_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+
+    switch(ctrl1_xl.bw0_xl) {
+    case LSM6DS3TR_C_XL_ANA_BW_1k5Hz:
+        *val = LSM6DS3TR_C_XL_ANA_BW_1k5Hz;
+        break;
+
+    case LSM6DS3TR_C_XL_ANA_BW_400Hz:
+        *val = LSM6DS3TR_C_XL_ANA_BW_400Hz;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_XL_ANA_BW_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_accelerometer_filters
+  * @brief       This section group all the functions concerning the filters
+  *              configuration that impact accelerometer.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Accelerometer digital LPF (LPF1) bandwidth selection LPF2 is
+  *         not used.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of lpf1_bw_sel in reg CTRL1_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_lp1_bandwidth_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_lpf1_bw_sel_t val) {
+    lsm6ds3tr_c_ctrl1_xl_t ctrl1_xl;
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+
+    if(ret == 0) {
+        ctrl1_xl.lpf1_bw_sel = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+
+            if(ret == 0) {
+                ctrl8_xl.lpf2_xl_en = 0;
+                ctrl8_xl.hp_slope_xl_en = 0;
+                ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Accelerometer digital LPF (LPF1) bandwidth selection LPF2
+  *         is not used.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of lpf1_bw_sel in reg CTRL1_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_lp1_bandwidth_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_lpf1_bw_sel_t* val) {
+    lsm6ds3tr_c_ctrl1_xl_t ctrl1_xl;
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+
+    if(ret == 0) {
+        if((ctrl8_xl.lpf2_xl_en != 0x00U) || (ctrl8_xl.hp_slope_xl_en != 0x00U)) {
+            *val = LSM6DS3TR_C_XL_LP1_NA;
+        }
+
+        else {
+            ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL1_XL, (uint8_t*)&ctrl1_xl, 1);
+
+            switch(ctrl1_xl.lpf1_bw_sel) {
+            case LSM6DS3TR_C_XL_LP1_ODR_DIV_2:
+                *val = LSM6DS3TR_C_XL_LP1_ODR_DIV_2;
+                break;
+
+            case LSM6DS3TR_C_XL_LP1_ODR_DIV_4:
+                *val = LSM6DS3TR_C_XL_LP1_ODR_DIV_4;
+                break;
+
+            default:
+                *val = LSM6DS3TR_C_XL_LP1_NA;
+                break;
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  LPF2 on outputs[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of input_composite in reg CTRL8_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_lp2_bandwidth_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_input_composite_t val) {
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+
+    if(ret == 0) {
+        ctrl8_xl.input_composite = ((uint8_t)val & 0x10U) >> 4;
+        ctrl8_xl.hpcf_xl = (uint8_t)val & 0x03U;
+        ctrl8_xl.lpf2_xl_en = 1;
+        ctrl8_xl.hp_slope_xl_en = 0;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  LPF2 on outputs[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of input_composite in reg CTRL8_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_lp2_bandwidth_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_input_composite_t* val) {
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+
+    if(ret == 0) {
+        if((ctrl8_xl.lpf2_xl_en == 0x00U) || (ctrl8_xl.hp_slope_xl_en != 0x00U)) {
+            *val = LSM6DS3TR_C_XL_LP_NA;
+        }
+
+        else {
+            switch((ctrl8_xl.input_composite << 4) + ctrl8_xl.hpcf_xl) {
+            case LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_50:
+                *val = LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_50;
+                break;
+
+            case LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_100:
+                *val = LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_100;
+                break;
+
+            case LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_9:
+                *val = LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_9;
+                break;
+
+            case LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_400:
+                *val = LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_400;
+                break;
+
+            case LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_50:
+                *val = LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_50;
+                break;
+
+            case LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_100:
+                *val = LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_100;
+                break;
+
+            case LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_9:
+                *val = LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_9;
+                break;
+
+            case LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_400:
+                *val = LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_400;
+                break;
+
+            default:
+                *val = LSM6DS3TR_C_XL_LP_NA;
+                break;
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable HP filter reference mode.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of hp_ref_mode in reg CTRL8_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_reference_mode_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+
+    if(ret == 0) {
+        ctrl8_xl.hp_ref_mode = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable HP filter reference mode.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of hp_ref_mode in reg CTRL8_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_reference_mode_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+    *val = ctrl8_xl.hp_ref_mode;
+
+    return ret;
+}
+
+/**
+  * @brief  High pass/Slope on outputs.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of hpcf_xl in reg CTRL8_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_hp_bandwidth_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_hpcf_xl_t val) {
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+
+    if(ret == 0) {
+        ctrl8_xl.input_composite = 0;
+        ctrl8_xl.hpcf_xl = (uint8_t)val & 0x03U;
+        ctrl8_xl.hp_slope_xl_en = 1;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  High pass/Slope on outputs.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of hpcf_xl in reg CTRL8_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_xl_hp_bandwidth_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_hpcf_xl_t* val) {
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+
+    if(ctrl8_xl.hp_slope_xl_en == 0x00U) {
+        *val = LSM6DS3TR_C_XL_HP_NA;
+    }
+
+    switch(ctrl8_xl.hpcf_xl) {
+    case LSM6DS3TR_C_XL_HP_ODR_DIV_4:
+        *val = LSM6DS3TR_C_XL_HP_ODR_DIV_4;
+        break;
+
+    case LSM6DS3TR_C_XL_HP_ODR_DIV_100:
+        *val = LSM6DS3TR_C_XL_HP_ODR_DIV_100;
+        break;
+
+    case LSM6DS3TR_C_XL_HP_ODR_DIV_9:
+        *val = LSM6DS3TR_C_XL_HP_ODR_DIV_9;
+        break;
+
+    case LSM6DS3TR_C_XL_HP_ODR_DIV_400:
+        *val = LSM6DS3TR_C_XL_HP_ODR_DIV_400;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_XL_HP_NA;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_gyroscope_filters
+  * @brief       This section group all the functions concerning the filters
+  *              configuration that impact gyroscope.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Gyroscope low pass path bandwidth.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    gyroscope filtering chain configuration.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_band_pass_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_lpf1_sel_g_t val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    lsm6ds3tr_c_ctrl6_c_t ctrl6_c;
+    lsm6ds3tr_c_ctrl7_g_t ctrl7_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL7_G, (uint8_t*)&ctrl7_g, 1);
+
+    if(ret == 0) {
+        ctrl7_g.hpm_g = ((uint8_t)val & 0x30U) >> 4;
+        ctrl7_g.hp_en_g = ((uint8_t)val & 0x80U) >> 7;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL7_G, (uint8_t*)&ctrl7_g, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+
+            if(ret == 0) {
+                ctrl6_c.ftype = (uint8_t)val & 0x03U;
+                ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+
+                if(ret == 0) {
+                    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+
+                    if(ret == 0) {
+                        ctrl4_c.lpf1_sel_g = ((uint8_t)val & 0x08U) >> 3;
+                        ret =
+                            lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+                    }
+                }
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Gyroscope low pass path bandwidth.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    gyroscope filtering chain
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_band_pass_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_lpf1_sel_g_t* val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    lsm6ds3tr_c_ctrl6_c_t ctrl6_c;
+    lsm6ds3tr_c_ctrl7_g_t ctrl7_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL7_G, (uint8_t*)&ctrl7_g, 1);
+
+            switch((ctrl7_g.hp_en_g << 7) + (ctrl7_g.hpm_g << 4) + (ctrl4_c.lpf1_sel_g << 3) +
+                   ctrl6_c.ftype) {
+            case LSM6DS3TR_C_HP_16mHz_LP2:
+                *val = LSM6DS3TR_C_HP_16mHz_LP2;
+                break;
+
+            case LSM6DS3TR_C_HP_65mHz_LP2:
+                *val = LSM6DS3TR_C_HP_65mHz_LP2;
+                break;
+
+            case LSM6DS3TR_C_HP_260mHz_LP2:
+                *val = LSM6DS3TR_C_HP_260mHz_LP2;
+                break;
+
+            case LSM6DS3TR_C_HP_1Hz04_LP2:
+                *val = LSM6DS3TR_C_HP_1Hz04_LP2;
+                break;
+
+            case LSM6DS3TR_C_HP_DISABLE_LP1_LIGHT:
+                *val = LSM6DS3TR_C_HP_DISABLE_LP1_LIGHT;
+                break;
+
+            case LSM6DS3TR_C_HP_DISABLE_LP1_NORMAL:
+                *val = LSM6DS3TR_C_HP_DISABLE_LP1_NORMAL;
+                break;
+
+            case LSM6DS3TR_C_HP_DISABLE_LP_STRONG:
+                *val = LSM6DS3TR_C_HP_DISABLE_LP_STRONG;
+                break;
+
+            case LSM6DS3TR_C_HP_DISABLE_LP1_AGGRESSIVE:
+                *val = LSM6DS3TR_C_HP_DISABLE_LP1_AGGRESSIVE;
+                break;
+
+            case LSM6DS3TR_C_HP_16mHz_LP1_LIGHT:
+                *val = LSM6DS3TR_C_HP_16mHz_LP1_LIGHT;
+                break;
+
+            case LSM6DS3TR_C_HP_65mHz_LP1_NORMAL:
+                *val = LSM6DS3TR_C_HP_65mHz_LP1_NORMAL;
+                break;
+
+            case LSM6DS3TR_C_HP_260mHz_LP1_STRONG:
+                *val = LSM6DS3TR_C_HP_260mHz_LP1_STRONG;
+                break;
+
+            case LSM6DS3TR_C_HP_1Hz04_LP1_AGGRESSIVE:
+                *val = LSM6DS3TR_C_HP_1Hz04_LP1_AGGRESSIVE;
+                break;
+
+            default:
+                *val = LSM6DS3TR_C_HP_GY_BAND_NA;
+                break;
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_serial_interface
+  * @brief       This section groups all the functions concerning serial
+  *              interface management
+  * @{
+  *
+  */
+
+/**
+  * @brief  SPI Serial Interface Mode selection.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of sim in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_spi_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_sim_t val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    if(ret == 0) {
+        ctrl3_c.sim = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  SPI Serial Interface Mode selection.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of sim in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_spi_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_sim_t* val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    switch(ctrl3_c.sim) {
+    case LSM6DS3TR_C_SPI_4_WIRE:
+        *val = LSM6DS3TR_C_SPI_4_WIRE;
+        break;
+
+    case LSM6DS3TR_C_SPI_3_WIRE:
+        *val = LSM6DS3TR_C_SPI_3_WIRE;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_SPI_MODE_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Disable / Enable I2C interface.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of i2c_disable in reg CTRL4_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_i2c_interface_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_i2c_disable_t val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+
+    if(ret == 0) {
+        ctrl4_c.i2c_disable = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Disable / Enable I2C interface.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of i2c_disable in reg CTRL4_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_i2c_interface_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_i2c_disable_t* val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+
+    switch(ctrl4_c.i2c_disable) {
+    case LSM6DS3TR_C_I2C_ENABLE:
+        *val = LSM6DS3TR_C_I2C_ENABLE;
+        break;
+
+    case LSM6DS3TR_C_I2C_DISABLE:
+        *val = LSM6DS3TR_C_I2C_DISABLE;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_I2C_MODE_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_interrupt_pins
+  * @brief       This section groups all the functions that manage
+  *              interrupt pins
+  * @{
+  *
+  */
+
+/**
+  * @brief  Select the signal that need to route on int1 pad[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    configure INT1_CTRL, MD1_CFG, CTRL4_C(den_drdy_int1),
+  *                MASTER_CONFIG(drdy_on_int1)
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pin_int1_route_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_int1_route_t val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    lsm6ds3tr_c_int1_ctrl_t int1_ctrl;
+    lsm6ds3tr_c_md1_cfg_t md1_cfg;
+    lsm6ds3tr_c_md2_cfg_t md2_cfg;
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_INT1_CTRL, (uint8_t*)&int1_ctrl, 1);
+
+    if(ret == 0) {
+        int1_ctrl.int1_drdy_xl = val.int1_drdy_xl;
+        int1_ctrl.int1_drdy_g = val.int1_drdy_g;
+        int1_ctrl.int1_boot = val.int1_boot;
+        int1_ctrl.int1_fth = val.int1_fth;
+        int1_ctrl.int1_fifo_ovr = val.int1_fifo_ovr;
+        int1_ctrl.int1_full_flag = val.int1_full_flag;
+        int1_ctrl.int1_sign_mot = val.int1_sign_mot;
+        int1_ctrl.int1_step_detector = val.int1_step_detector;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_INT1_CTRL, (uint8_t*)&int1_ctrl, 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MD1_CFG, (uint8_t*)&md1_cfg, 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MD2_CFG, (uint8_t*)&md2_cfg, 1);
+    }
+
+    if(ret == 0) {
+        md1_cfg.int1_timer = val.int1_timer;
+        md1_cfg.int1_tilt = val.int1_tilt;
+        md1_cfg.int1_6d = val.int1_6d;
+        md1_cfg.int1_double_tap = val.int1_double_tap;
+        md1_cfg.int1_ff = val.int1_ff;
+        md1_cfg.int1_wu = val.int1_wu;
+        md1_cfg.int1_single_tap = val.int1_single_tap;
+        md1_cfg.int1_inact_state = val.int1_inact_state;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MD1_CFG, (uint8_t*)&md1_cfg, 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+    }
+
+    if(ret == 0) {
+        ctrl4_c.den_drdy_int1 = val.den_drdy_int1;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    }
+
+    if(ret == 0) {
+        master_config.drdy_on_int1 = val.den_drdy_int1;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+        if((val.int1_6d != 0x00U) || (val.int1_ff != 0x00U) || (val.int1_wu != 0x00U) ||
+           (val.int1_single_tap != 0x00U) || (val.int1_double_tap != 0x00U) ||
+           (val.int1_inact_state != 0x00U) || (md2_cfg.int2_6d != 0x00U) ||
+           (md2_cfg.int2_ff != 0x00U) || (md2_cfg.int2_wu != 0x00U) ||
+           (md2_cfg.int2_single_tap != 0x00U) || (md2_cfg.int2_double_tap != 0x00U) ||
+           (md2_cfg.int2_inact_state != 0x00U)) {
+            tap_cfg.interrupts_enable = PROPERTY_ENABLE;
+        }
+
+        else {
+            tap_cfg.interrupts_enable = PROPERTY_DISABLE;
+        }
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Select the signal that need to route on int1 pad[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    read INT1_CTRL, MD1_CFG, CTRL4_C(den_drdy_int1),
+  *                MASTER_CONFIG(drdy_on_int1)
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pin_int1_route_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_int1_route_t* val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    lsm6ds3tr_c_int1_ctrl_t int1_ctrl;
+    lsm6ds3tr_c_md1_cfg_t md1_cfg;
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_INT1_CTRL, (uint8_t*)&int1_ctrl, 1);
+
+    if(ret == 0) {
+        val->int1_drdy_xl = int1_ctrl.int1_drdy_xl;
+        val->int1_drdy_g = int1_ctrl.int1_drdy_g;
+        val->int1_boot = int1_ctrl.int1_boot;
+        val->int1_fth = int1_ctrl.int1_fth;
+        val->int1_fifo_ovr = int1_ctrl.int1_fifo_ovr;
+        val->int1_full_flag = int1_ctrl.int1_full_flag;
+        val->int1_sign_mot = int1_ctrl.int1_sign_mot;
+        val->int1_step_detector = int1_ctrl.int1_step_detector;
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MD1_CFG, (uint8_t*)&md1_cfg, 1);
+
+        if(ret == 0) {
+            val->int1_timer = md1_cfg.int1_timer;
+            val->int1_tilt = md1_cfg.int1_tilt;
+            val->int1_6d = md1_cfg.int1_6d;
+            val->int1_double_tap = md1_cfg.int1_double_tap;
+            val->int1_ff = md1_cfg.int1_ff;
+            val->int1_wu = md1_cfg.int1_wu;
+            val->int1_single_tap = md1_cfg.int1_single_tap;
+            val->int1_inact_state = md1_cfg.int1_inact_state;
+            ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+
+            if(ret == 0) {
+                val->den_drdy_int1 = ctrl4_c.den_drdy_int1;
+                ret = lsm6ds3tr_c_read_reg(
+                    ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+                val->den_drdy_int1 = master_config.drdy_on_int1;
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Select the signal that need to route on int2 pad[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    INT2_CTRL, DRDY_PULSE_CFG(int2_wrist_tilt), MD2_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pin_int2_route_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_int2_route_t val) {
+    lsm6ds3tr_c_int2_ctrl_t int2_ctrl;
+    lsm6ds3tr_c_md1_cfg_t md1_cfg;
+    lsm6ds3tr_c_md2_cfg_t md2_cfg;
+    lsm6ds3tr_c_drdy_pulse_cfg_g_t drdy_pulse_cfg_g;
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_INT2_CTRL, (uint8_t*)&int2_ctrl, 1);
+
+    if(ret == 0) {
+        int2_ctrl.int2_drdy_xl = val.int2_drdy_xl;
+        int2_ctrl.int2_drdy_g = val.int2_drdy_g;
+        int2_ctrl.int2_drdy_temp = val.int2_drdy_temp;
+        int2_ctrl.int2_fth = val.int2_fth;
+        int2_ctrl.int2_fifo_ovr = val.int2_fifo_ovr;
+        int2_ctrl.int2_full_flag = val.int2_full_flag;
+        int2_ctrl.int2_step_count_ov = val.int2_step_count_ov;
+        int2_ctrl.int2_step_delta = val.int2_step_delta;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_INT2_CTRL, (uint8_t*)&int2_ctrl, 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MD1_CFG, (uint8_t*)&md1_cfg, 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MD2_CFG, (uint8_t*)&md2_cfg, 1);
+    }
+
+    if(ret == 0) {
+        md2_cfg.int2_iron = val.int2_iron;
+        md2_cfg.int2_tilt = val.int2_tilt;
+        md2_cfg.int2_6d = val.int2_6d;
+        md2_cfg.int2_double_tap = val.int2_double_tap;
+        md2_cfg.int2_ff = val.int2_ff;
+        md2_cfg.int2_wu = val.int2_wu;
+        md2_cfg.int2_single_tap = val.int2_single_tap;
+        md2_cfg.int2_inact_state = val.int2_inact_state;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MD2_CFG, (uint8_t*)&md2_cfg, 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(
+            ctx, LSM6DS3TR_C_DRDY_PULSE_CFG_G, (uint8_t*)&drdy_pulse_cfg_g, 1);
+    }
+
+    if(ret == 0) {
+        drdy_pulse_cfg_g.int2_wrist_tilt = val.int2_wrist_tilt;
+        ret = lsm6ds3tr_c_write_reg(
+            ctx, LSM6DS3TR_C_DRDY_PULSE_CFG_G, (uint8_t*)&drdy_pulse_cfg_g, 1);
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+        if((md1_cfg.int1_6d != 0x00U) || (md1_cfg.int1_ff != 0x00U) ||
+           (md1_cfg.int1_wu != 0x00U) || (md1_cfg.int1_single_tap != 0x00U) ||
+           (md1_cfg.int1_double_tap != 0x00U) || (md1_cfg.int1_inact_state != 0x00U) ||
+           (val.int2_6d != 0x00U) || (val.int2_ff != 0x00U) || (val.int2_wu != 0x00U) ||
+           (val.int2_single_tap != 0x00U) || (val.int2_double_tap != 0x00U) ||
+           (val.int2_inact_state != 0x00U)) {
+            tap_cfg.interrupts_enable = PROPERTY_ENABLE;
+        }
+
+        else {
+            tap_cfg.interrupts_enable = PROPERTY_DISABLE;
+        }
+    }
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Select the signal that need to route on int2 pad[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    INT2_CTRL, DRDY_PULSE_CFG(int2_wrist_tilt), MD2_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pin_int2_route_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_int2_route_t* val) {
+    lsm6ds3tr_c_int2_ctrl_t int2_ctrl;
+    lsm6ds3tr_c_md2_cfg_t md2_cfg;
+    lsm6ds3tr_c_drdy_pulse_cfg_g_t drdy_pulse_cfg_g;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_INT2_CTRL, (uint8_t*)&int2_ctrl, 1);
+
+    if(ret == 0) {
+        val->int2_drdy_xl = int2_ctrl.int2_drdy_xl;
+        val->int2_drdy_g = int2_ctrl.int2_drdy_g;
+        val->int2_drdy_temp = int2_ctrl.int2_drdy_temp;
+        val->int2_fth = int2_ctrl.int2_fth;
+        val->int2_fifo_ovr = int2_ctrl.int2_fifo_ovr;
+        val->int2_full_flag = int2_ctrl.int2_full_flag;
+        val->int2_step_count_ov = int2_ctrl.int2_step_count_ov;
+        val->int2_step_delta = int2_ctrl.int2_step_delta;
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MD2_CFG, (uint8_t*)&md2_cfg, 1);
+
+        if(ret == 0) {
+            val->int2_iron = md2_cfg.int2_iron;
+            val->int2_tilt = md2_cfg.int2_tilt;
+            val->int2_6d = md2_cfg.int2_6d;
+            val->int2_double_tap = md2_cfg.int2_double_tap;
+            val->int2_ff = md2_cfg.int2_ff;
+            val->int2_wu = md2_cfg.int2_wu;
+            val->int2_single_tap = md2_cfg.int2_single_tap;
+            val->int2_inact_state = md2_cfg.int2_inact_state;
+            ret = lsm6ds3tr_c_read_reg(
+                ctx, LSM6DS3TR_C_DRDY_PULSE_CFG_G, (uint8_t*)&drdy_pulse_cfg_g, 1);
+            val->int2_wrist_tilt = drdy_pulse_cfg_g.int2_wrist_tilt;
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Push-pull/open drain selection on interrupt pads.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of pp_od in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pin_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_pp_od_t val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    if(ret == 0) {
+        ctrl3_c.pp_od = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Push-pull/open drain selection on interrupt pads.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of pp_od in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pin_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_pp_od_t* val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    switch(ctrl3_c.pp_od) {
+    case LSM6DS3TR_C_PUSH_PULL:
+        *val = LSM6DS3TR_C_PUSH_PULL;
+        break;
+
+    case LSM6DS3TR_C_OPEN_DRAIN:
+        *val = LSM6DS3TR_C_OPEN_DRAIN;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_PIN_MODE_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Interrupt active-high/low.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of h_lactive in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pin_polarity_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_h_lactive_t val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    if(ret == 0) {
+        ctrl3_c.h_lactive = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Interrupt active-high/low.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of h_lactive in reg CTRL3_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pin_polarity_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_h_lactive_t* val) {
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL3_C, (uint8_t*)&ctrl3_c, 1);
+
+    switch(ctrl3_c.h_lactive) {
+    case LSM6DS3TR_C_ACTIVE_HIGH:
+        *val = LSM6DS3TR_C_ACTIVE_HIGH;
+        break;
+
+    case LSM6DS3TR_C_ACTIVE_LOW:
+        *val = LSM6DS3TR_C_ACTIVE_LOW;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_POLARITY_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  All interrupt signals become available on INT1 pin.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of int2_on_int1 in reg CTRL4_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_all_on_int1_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+
+    if(ret == 0) {
+        ctrl4_c.int2_on_int1 = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  All interrupt signals become available on INT1 pin.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of int2_on_int1 in reg CTRL4_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_all_on_int1_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+    *val = ctrl4_c.int2_on_int1;
+
+    return ret;
+}
+
+/**
+  * @brief  Latched/pulsed interrupt.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of lir in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_int_notification_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_lir_t val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+    if(ret == 0) {
+        tap_cfg.lir = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Latched/pulsed interrupt.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of lir in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_int_notification_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_lir_t* val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+    switch(tap_cfg.lir) {
+    case LSM6DS3TR_C_INT_PULSED:
+        *val = LSM6DS3TR_C_INT_PULSED;
+        break;
+
+    case LSM6DS3TR_C_INT_LATCHED:
+        *val = LSM6DS3TR_C_INT_LATCHED;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_INT_MODE;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_Wake_Up_event
+  * @brief       This section groups all the functions that manage the
+  *              Wake Up event generation.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Threshold for wakeup.1 LSB = FS_XL / 64.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of wk_ths in reg WAKE_UP_THS
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_wkup_threshold_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_wake_up_ths_t wake_up_ths;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_THS, (uint8_t*)&wake_up_ths, 1);
+
+    if(ret == 0) {
+        wake_up_ths.wk_ths = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_WAKE_UP_THS, (uint8_t*)&wake_up_ths, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Threshold for wakeup.1 LSB = FS_XL / 64.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of wk_ths in reg WAKE_UP_THS
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_wkup_threshold_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_wake_up_ths_t wake_up_ths;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_THS, (uint8_t*)&wake_up_ths, 1);
+    *val = wake_up_ths.wk_ths;
+
+    return ret;
+}
+
+/**
+  * @brief  Wake up duration event.1LSb = 1 / ODR[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of wake_dur in reg WAKE_UP_DUR
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_wkup_dur_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_wake_up_dur_t wake_up_dur;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+
+    if(ret == 0) {
+        wake_up_dur.wake_dur = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Wake up duration event.1LSb = 1 / ODR[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of wake_dur in reg WAKE_UP_DUR
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_wkup_dur_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_wake_up_dur_t wake_up_dur;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+    *val = wake_up_dur.wake_dur;
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_Activity/Inactivity_detection
+  * @brief       This section groups all the functions concerning
+  *              activity/inactivity detection.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Enables gyroscope Sleep mode.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of sleep in reg CTRL4_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_sleep_mode_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+
+    if(ret == 0) {
+        ctrl4_c.sleep = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enables gyroscope Sleep mode.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of sleep in reg CTRL4_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_gy_sleep_mode_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+    *val = ctrl4_c.sleep;
+
+    return ret;
+}
+
+/**
+  * @brief  Enable inactivity function.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of inact_en in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_act_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_inact_en_t val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+    if(ret == 0) {
+        tap_cfg.inact_en = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable inactivity function.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of inact_en in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_act_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_inact_en_t* val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+    switch(tap_cfg.inact_en) {
+    case LSM6DS3TR_C_PROPERTY_DISABLE:
+        *val = LSM6DS3TR_C_PROPERTY_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_XL_12Hz5_GY_NOT_AFFECTED:
+        *val = LSM6DS3TR_C_XL_12Hz5_GY_NOT_AFFECTED;
+        break;
+
+    case LSM6DS3TR_C_XL_12Hz5_GY_SLEEP:
+        *val = LSM6DS3TR_C_XL_12Hz5_GY_SLEEP;
+        break;
+
+    case LSM6DS3TR_C_XL_12Hz5_GY_PD:
+        *val = LSM6DS3TR_C_XL_12Hz5_GY_PD;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_ACT_MODE_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Duration to go in sleep mode.1 LSb = 512 / ODR[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of sleep_dur in reg WAKE_UP_DUR
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_act_sleep_dur_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_wake_up_dur_t wake_up_dur;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+
+    if(ret == 0) {
+        wake_up_dur.sleep_dur = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Duration to go in sleep mode. 1 LSb = 512 / ODR[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of sleep_dur in reg WAKE_UP_DUR
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_act_sleep_dur_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_wake_up_dur_t wake_up_dur;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+    *val = wake_up_dur.sleep_dur;
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_tap_generator
+  * @brief       This section groups all the functions that manage the
+  *              tap and double tap event generation.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Read the tap / double tap source register.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Structure of registers from TAP_SRC
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_src_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_tap_src_t* val) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_SRC, (uint8_t*)val, 1);
+
+    return ret;
+}
+
+/**
+  * @brief  Enable Z direction in tap recognition.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tap_z_en in reg TAP_CFG
+  *
+  */
+int32_t lsm6ds3tr_c_tap_detection_on_z_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+    if(ret == 0) {
+        tap_cfg.tap_z_en = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable Z direction in tap recognition.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tap_z_en in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_detection_on_z_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    *val = tap_cfg.tap_z_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Enable Y direction in tap recognition.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tap_y_en in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_detection_on_y_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+    if(ret == 0) {
+        tap_cfg.tap_y_en = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable Y direction in tap recognition.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tap_y_en in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_detection_on_y_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    *val = tap_cfg.tap_y_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Enable X direction in tap recognition.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tap_x_en in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_detection_on_x_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+
+    if(ret == 0) {
+        tap_cfg.tap_x_en = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable X direction in tap recognition.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tap_x_en in reg TAP_CFG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_detection_on_x_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_CFG, (uint8_t*)&tap_cfg, 1);
+    *val = tap_cfg.tap_x_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Threshold for tap recognition.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tap_ths in reg TAP_THS_6D
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_threshold_x_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_tap_ths_6d_t tap_ths_6d;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_THS_6D, (uint8_t*)&tap_ths_6d, 1);
+
+    if(ret == 0) {
+        tap_ths_6d.tap_ths = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_THS_6D, (uint8_t*)&tap_ths_6d, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Threshold for tap recognition.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tap_ths in reg TAP_THS_6D
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_threshold_x_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_tap_ths_6d_t tap_ths_6d;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_THS_6D, (uint8_t*)&tap_ths_6d, 1);
+    *val = tap_ths_6d.tap_ths;
+
+    return ret;
+}
+
+/**
+  * @brief  Maximum duration is the maximum time of an overthreshold signal
+  *         detection to be recognized as a tap event.
+  *         The default value of these bits is 00b which corresponds to
+  *         4*ODR_XL time.
+  *         If the SHOCK[1:0] bits are set to a different
+  *         value, 1LSB corresponds to 8*ODR_XL time.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of shock in reg INT_DUR2
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_shock_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_int_dur2_t int_dur2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_INT_DUR2, (uint8_t*)&int_dur2, 1);
+
+    if(ret == 0) {
+        int_dur2.shock = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_INT_DUR2, (uint8_t*)&int_dur2, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Maximum duration is the maximum time of an overthreshold signal
+  *         detection to be recognized as a tap event.
+  *         The default value of these bits is 00b which corresponds to
+  *         4*ODR_XL time.
+  *         If the SHOCK[1:0] bits are set to a different value, 1LSB
+  *         corresponds to 8*ODR_XL time.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of shock in reg INT_DUR2
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_shock_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_int_dur2_t int_dur2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_INT_DUR2, (uint8_t*)&int_dur2, 1);
+    *val = int_dur2.shock;
+
+    return ret;
+}
+
+/**
+  * @brief  Quiet time is the time after the first detected tap in which there
+  *         must not be any overthreshold event.
+  *         The default value of these bits is 00b which corresponds to
+  *         2*ODR_XL time.
+  *         If the QUIET[1:0] bits are set to a different value, 1LSB
+  *         corresponds to 4*ODR_XL time.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of quiet in reg INT_DUR2
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_quiet_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_int_dur2_t int_dur2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_INT_DUR2, (uint8_t*)&int_dur2, 1);
+
+    if(ret == 0) {
+        int_dur2.quiet = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_INT_DUR2, (uint8_t*)&int_dur2, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Quiet time is the time after the first detected tap in which there
+  *         must not be any overthreshold event.
+  *         The default value of these bits is 00b which corresponds to
+  *         2*ODR_XL time.
+  *         If the QUIET[1:0] bits are set to a different value, 1LSB
+  *         corresponds to 4*ODR_XL time.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of quiet in reg INT_DUR2
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_quiet_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_int_dur2_t int_dur2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_INT_DUR2, (uint8_t*)&int_dur2, 1);
+    *val = int_dur2.quiet;
+
+    return ret;
+}
+
+/**
+  * @brief  When double tap recognition is enabled, this register expresses the
+  *         maximum time between two consecutive detected taps to determine a
+  *         double tap event.
+  *         The default value of these bits is 0000b which corresponds to
+  *         16*ODR_XL time.
+  *         If the DUR[3:0] bits are set to a different value,1LSB corresponds
+  *         to 32*ODR_XL time.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of dur in reg INT_DUR2
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_dur_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_int_dur2_t int_dur2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_INT_DUR2, (uint8_t*)&int_dur2, 1);
+
+    if(ret == 0) {
+        int_dur2.dur = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_INT_DUR2, (uint8_t*)&int_dur2, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  When double tap recognition is enabled, this register expresses the
+  *         maximum time between two consecutive detected taps to determine a
+  *         double tap event.
+  *         The default value of these bits is 0000b which corresponds to
+  *         16*ODR_XL time.
+  *         If the DUR[3:0] bits are set to a different value,1LSB corresponds
+  *         to 32*ODR_XL time.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of dur in reg INT_DUR2
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_dur_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_int_dur2_t int_dur2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_INT_DUR2, (uint8_t*)&int_dur2, 1);
+    *val = int_dur2.dur;
+
+    return ret;
+}
+
+/**
+  * @brief  Single/double-tap event enable/disable.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of
+  *                                      single_double_tap in reg WAKE_UP_THS
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_single_double_tap_t val) {
+    lsm6ds3tr_c_wake_up_ths_t wake_up_ths;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_THS, (uint8_t*)&wake_up_ths, 1);
+
+    if(ret == 0) {
+        wake_up_ths.single_double_tap = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_WAKE_UP_THS, (uint8_t*)&wake_up_ths, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Single/double-tap event enable/disable.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of single_double_tap
+  *                                      in reg WAKE_UP_THS
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tap_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_single_double_tap_t* val) {
+    lsm6ds3tr_c_wake_up_ths_t wake_up_ths;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_THS, (uint8_t*)&wake_up_ths, 1);
+
+    switch(wake_up_ths.single_double_tap) {
+    case LSM6DS3TR_C_ONLY_SINGLE:
+        *val = LSM6DS3TR_C_ONLY_SINGLE;
+        break;
+
+    case LSM6DS3TR_C_BOTH_SINGLE_DOUBLE:
+        *val = LSM6DS3TR_C_BOTH_SINGLE_DOUBLE;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_TAP_MODE_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_ Six_position_detection(6D/4D)
+  * @brief       This section groups all the functions concerning six
+  *              position detection (6D).
+  * @{
+  *
+  */
+
+/**
+  * @brief  LPF2 feed 6D function selection.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of low_pass_on_6d in
+  *                                   reg CTRL8_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_6d_feed_data_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_low_pass_on_6d_t val) {
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+
+    if(ret == 0) {
+        ctrl8_xl.low_pass_on_6d = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  LPF2 feed 6D function selection.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of low_pass_on_6d in reg CTRL8_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_6d_feed_data_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_low_pass_on_6d_t* val) {
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL8_XL, (uint8_t*)&ctrl8_xl, 1);
+
+    switch(ctrl8_xl.low_pass_on_6d) {
+    case LSM6DS3TR_C_ODR_DIV_2_FEED:
+        *val = LSM6DS3TR_C_ODR_DIV_2_FEED;
+        break;
+
+    case LSM6DS3TR_C_LPF2_FEED:
+        *val = LSM6DS3TR_C_LPF2_FEED;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_6D_FEED_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Threshold for 4D/6D function.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of sixd_ths in reg TAP_THS_6D
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_6d_threshold_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_sixd_ths_t val) {
+    lsm6ds3tr_c_tap_ths_6d_t tap_ths_6d;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_THS_6D, (uint8_t*)&tap_ths_6d, 1);
+
+    if(ret == 0) {
+        tap_ths_6d.sixd_ths = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_THS_6D, (uint8_t*)&tap_ths_6d, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Threshold for 4D/6D function.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of sixd_ths in reg TAP_THS_6D
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_6d_threshold_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_sixd_ths_t* val) {
+    lsm6ds3tr_c_tap_ths_6d_t tap_ths_6d;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_THS_6D, (uint8_t*)&tap_ths_6d, 1);
+
+    switch(tap_ths_6d.sixd_ths) {
+    case LSM6DS3TR_C_DEG_80:
+        *val = LSM6DS3TR_C_DEG_80;
+        break;
+
+    case LSM6DS3TR_C_DEG_70:
+        *val = LSM6DS3TR_C_DEG_70;
+        break;
+
+    case LSM6DS3TR_C_DEG_60:
+        *val = LSM6DS3TR_C_DEG_60;
+        break;
+
+    case LSM6DS3TR_C_DEG_50:
+        *val = LSM6DS3TR_C_DEG_50;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_6D_TH_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  4D orientation detection enable.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of d4d_en in reg TAP_THS_6D
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_4d_mode_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_tap_ths_6d_t tap_ths_6d;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_THS_6D, (uint8_t*)&tap_ths_6d, 1);
+
+    if(ret == 0) {
+        tap_ths_6d.d4d_en = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_TAP_THS_6D, (uint8_t*)&tap_ths_6d, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  4D orientation detection enable.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of d4d_en in reg TAP_THS_6D
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_4d_mode_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_tap_ths_6d_t tap_ths_6d;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_TAP_THS_6D, (uint8_t*)&tap_ths_6d, 1);
+    *val = tap_ths_6d.d4d_en;
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_free_fall
+  * @brief       This section group all the functions concerning the free
+  *              fall detection.
+  * @{
+  *
+  */
+
+/**
+  * @brief Free-fall duration event. 1LSb = 1 / ODR[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of ff_dur in reg WAKE_UP_DUR
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_ff_dur_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_wake_up_dur_t wake_up_dur;
+    lsm6ds3tr_c_free_fall_t free_fall;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FREE_FALL, (uint8_t*)&free_fall, 1);
+
+    if(ret == 0) {
+        free_fall.ff_dur = (val & 0x1FU);
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FREE_FALL, (uint8_t*)&free_fall, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+
+            if(ret == 0) {
+                wake_up_dur.ff_dur = (val & 0x20U) >> 5;
+                ret =
+                    lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Free-fall duration event. 1LSb = 1 / ODR[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of ff_dur in reg WAKE_UP_DUR
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_ff_dur_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_wake_up_dur_t wake_up_dur;
+    lsm6ds3tr_c_free_fall_t free_fall;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_WAKE_UP_DUR, (uint8_t*)&wake_up_dur, 1);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FREE_FALL, (uint8_t*)&free_fall, 1);
+    }
+
+    *val = (wake_up_dur.ff_dur << 5) + free_fall.ff_dur;
+
+    return ret;
+}
+
+/**
+  * @brief  Free fall threshold setting.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of ff_ths in reg FREE_FALL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_ff_threshold_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_ff_ths_t val) {
+    lsm6ds3tr_c_free_fall_t free_fall;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FREE_FALL, (uint8_t*)&free_fall, 1);
+
+    if(ret == 0) {
+        free_fall.ff_ths = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FREE_FALL, (uint8_t*)&free_fall, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Free fall threshold setting.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of ff_ths in reg FREE_FALL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_ff_threshold_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_ff_ths_t* val) {
+    lsm6ds3tr_c_free_fall_t free_fall;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FREE_FALL, (uint8_t*)&free_fall, 1);
+
+    switch(free_fall.ff_ths) {
+    case LSM6DS3TR_C_FF_TSH_156mg:
+        *val = LSM6DS3TR_C_FF_TSH_156mg;
+        break;
+
+    case LSM6DS3TR_C_FF_TSH_219mg:
+        *val = LSM6DS3TR_C_FF_TSH_219mg;
+        break;
+
+    case LSM6DS3TR_C_FF_TSH_250mg:
+        *val = LSM6DS3TR_C_FF_TSH_250mg;
+        break;
+
+    case LSM6DS3TR_C_FF_TSH_312mg:
+        *val = LSM6DS3TR_C_FF_TSH_312mg;
+        break;
+
+    case LSM6DS3TR_C_FF_TSH_344mg:
+        *val = LSM6DS3TR_C_FF_TSH_344mg;
+        break;
+
+    case LSM6DS3TR_C_FF_TSH_406mg:
+        *val = LSM6DS3TR_C_FF_TSH_406mg;
+        break;
+
+    case LSM6DS3TR_C_FF_TSH_469mg:
+        *val = LSM6DS3TR_C_FF_TSH_469mg;
+        break;
+
+    case LSM6DS3TR_C_FF_TSH_500mg:
+        *val = LSM6DS3TR_C_FF_TSH_500mg;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_FF_TSH_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_fifo
+  * @brief       This section group all the functions concerning the
+  *              fifo usage
+  * @{
+  *
+  */
+
+/**
+  * @brief  FIFO watermark level selection.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of fth in reg FIFO_CTRL1
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_watermark_set(stmdev_ctx_t* ctx, uint16_t val) {
+    lsm6ds3tr_c_fifo_ctrl1_t fifo_ctrl1;
+    lsm6ds3tr_c_fifo_ctrl2_t fifo_ctrl2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+
+    if(ret == 0) {
+        fifo_ctrl1.fth = (uint8_t)(0x00FFU & val);
+        fifo_ctrl2.fth = (uint8_t)((0x0700U & val) >> 8);
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL1, (uint8_t*)&fifo_ctrl1, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  FIFO watermark level selection.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of fth in reg FIFO_CTRL1
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_watermark_get(stmdev_ctx_t* ctx, uint16_t* val) {
+    lsm6ds3tr_c_fifo_ctrl1_t fifo_ctrl1;
+    lsm6ds3tr_c_fifo_ctrl2_t fifo_ctrl2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL1, (uint8_t*)&fifo_ctrl1, 1);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+    }
+
+    *val = ((uint16_t)fifo_ctrl2.fth << 8) + (uint16_t)fifo_ctrl1.fth;
+
+    return ret;
+}
+
+/**
+  * @brief  FIFO data level.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    get the values of diff_fifo in reg  FIFO_STATUS1 and
+  *                FIFO_STATUS2(diff_fifo), it is recommended to set the
+  *                BDU bit.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_data_level_get(stmdev_ctx_t* ctx, uint16_t* val) {
+    lsm6ds3tr_c_fifo_status1_t fifo_status1;
+    lsm6ds3tr_c_fifo_status2_t fifo_status2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_STATUS1, (uint8_t*)&fifo_status1, 1);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_STATUS2, (uint8_t*)&fifo_status2, 1);
+        *val = ((uint16_t)fifo_status2.diff_fifo << 8) + (uint16_t)fifo_status1.diff_fifo;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  FIFO watermark.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    get the values of watermark in reg  FIFO_STATUS2 and
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_wtm_flag_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_fifo_status2_t fifo_status2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_STATUS2, (uint8_t*)&fifo_status2, 1);
+    *val = fifo_status2.waterm;
+
+    return ret;
+}
+
+/**
+  * @brief  FIFO pattern.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    get the values of fifo_pattern in reg  FIFO_STATUS3 and
+  *                FIFO_STATUS4, it is recommended to set the BDU bit
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_pattern_get(stmdev_ctx_t* ctx, uint16_t* val) {
+    lsm6ds3tr_c_fifo_status3_t fifo_status3;
+    lsm6ds3tr_c_fifo_status4_t fifo_status4;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_STATUS3, (uint8_t*)&fifo_status3, 1);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_STATUS4, (uint8_t*)&fifo_status4, 1);
+        *val = ((uint16_t)fifo_status4.fifo_pattern << 8) + fifo_status3.fifo_pattern;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Batching of temperature data[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of fifo_temp_en in reg FIFO_CTRL2
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_temp_batch_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_fifo_ctrl2_t fifo_ctrl2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+
+    if(ret == 0) {
+        fifo_ctrl2.fifo_temp_en = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Batching of temperature data[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of fifo_temp_en in reg FIFO_CTRL2
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_temp_batch_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_fifo_ctrl2_t fifo_ctrl2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+    *val = fifo_ctrl2.fifo_temp_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Trigger signal for FIFO write operation.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    act on FIFO_CTRL2(timer_pedo_fifo_drdy)
+  *                and MASTER_CONFIG(data_valid_sel_fifo)
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_write_trigger_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_trigger_fifo_t val) {
+    lsm6ds3tr_c_fifo_ctrl2_t fifo_ctrl2;
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+
+    if(ret == 0) {
+        fifo_ctrl2.timer_pedo_fifo_drdy = (uint8_t)val & 0x01U;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+
+        if(ret == 0) {
+            ret =
+                lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+            if(ret == 0) {
+                master_config.data_valid_sel_fifo = (((uint8_t)val & 0x02U) >> 1);
+                ret = lsm6ds3tr_c_write_reg(
+                    ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Trigger signal for FIFO write operation.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    act on FIFO_CTRL2(timer_pedo_fifo_drdy)
+  *                and MASTER_CONFIG(data_valid_sel_fifo)
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_write_trigger_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_trigger_fifo_t* val) {
+    lsm6ds3tr_c_fifo_ctrl2_t fifo_ctrl2;
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+        switch((fifo_ctrl2.timer_pedo_fifo_drdy << 1) + fifo_ctrl2.timer_pedo_fifo_drdy) {
+        case LSM6DS3TR_C_TRG_XL_GY_DRDY:
+            *val = LSM6DS3TR_C_TRG_XL_GY_DRDY;
+            break;
+
+        case LSM6DS3TR_C_TRG_STEP_DETECT:
+            *val = LSM6DS3TR_C_TRG_STEP_DETECT;
+            break;
+
+        case LSM6DS3TR_C_TRG_SH_DRDY:
+            *val = LSM6DS3TR_C_TRG_SH_DRDY;
+            break;
+
+        default:
+            *val = LSM6DS3TR_C_TRG_SH_ND;
+            break;
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief   Enable pedometer step counter and timestamp as 4th
+  *          FIFO data set.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of timer_pedo_fifo_en in reg FIFO_CTRL2
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_pedo_and_timestamp_batch_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_fifo_ctrl2_t fifo_ctrl2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+
+    if(ret == 0) {
+        fifo_ctrl2.timer_pedo_fifo_en = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable pedometer step counter and timestamp as 4th
+  *         FIFO data set.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of timer_pedo_fifo_en in reg FIFO_CTRL2
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_pedo_and_timestamp_batch_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_fifo_ctrl2_t fifo_ctrl2;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL2, (uint8_t*)&fifo_ctrl2, 1);
+    *val = fifo_ctrl2.timer_pedo_fifo_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Selects Batching Data Rate (writing frequency in FIFO) for
+  *         accelerometer data.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of dec_fifo_xl in reg FIFO_CTRL3
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_xl_batch_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_fifo_xl_t val) {
+    lsm6ds3tr_c_fifo_ctrl3_t fifo_ctrl3;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL3, (uint8_t*)&fifo_ctrl3, 1);
+
+    if(ret == 0) {
+        fifo_ctrl3.dec_fifo_xl = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL3, (uint8_t*)&fifo_ctrl3, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Selects Batching Data Rate (writing frequency in FIFO) for
+  *         accelerometer data.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of dec_fifo_xl in reg FIFO_CTRL3
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_xl_batch_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_fifo_xl_t* val) {
+    lsm6ds3tr_c_fifo_ctrl3_t fifo_ctrl3;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL3, (uint8_t*)&fifo_ctrl3, 1);
+
+    switch(fifo_ctrl3.dec_fifo_xl) {
+    case LSM6DS3TR_C_FIFO_XL_DISABLE:
+        *val = LSM6DS3TR_C_FIFO_XL_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_FIFO_XL_NO_DEC:
+        *val = LSM6DS3TR_C_FIFO_XL_NO_DEC;
+        break;
+
+    case LSM6DS3TR_C_FIFO_XL_DEC_2:
+        *val = LSM6DS3TR_C_FIFO_XL_DEC_2;
+        break;
+
+    case LSM6DS3TR_C_FIFO_XL_DEC_3:
+        *val = LSM6DS3TR_C_FIFO_XL_DEC_3;
+        break;
+
+    case LSM6DS3TR_C_FIFO_XL_DEC_4:
+        *val = LSM6DS3TR_C_FIFO_XL_DEC_4;
+        break;
+
+    case LSM6DS3TR_C_FIFO_XL_DEC_8:
+        *val = LSM6DS3TR_C_FIFO_XL_DEC_8;
+        break;
+
+    case LSM6DS3TR_C_FIFO_XL_DEC_16:
+        *val = LSM6DS3TR_C_FIFO_XL_DEC_16;
+        break;
+
+    case LSM6DS3TR_C_FIFO_XL_DEC_32:
+        *val = LSM6DS3TR_C_FIFO_XL_DEC_32;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_FIFO_XL_DEC_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Selects Batching Data Rate (writing frequency in FIFO)
+  *         for gyroscope data.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of dec_fifo_gyro in reg FIFO_CTRL3
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_gy_batch_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_fifo_gyro_t val) {
+    lsm6ds3tr_c_fifo_ctrl3_t fifo_ctrl3;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL3, (uint8_t*)&fifo_ctrl3, 1);
+
+    if(ret == 0) {
+        fifo_ctrl3.dec_fifo_gyro = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL3, (uint8_t*)&fifo_ctrl3, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Selects Batching Data Rate (writing frequency in FIFO)
+  *         for gyroscope data.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of dec_fifo_gyro in reg FIFO_CTRL3
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_gy_batch_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_fifo_gyro_t* val) {
+    lsm6ds3tr_c_fifo_ctrl3_t fifo_ctrl3;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL3, (uint8_t*)&fifo_ctrl3, 1);
+
+    switch(fifo_ctrl3.dec_fifo_gyro) {
+    case LSM6DS3TR_C_FIFO_GY_DISABLE:
+        *val = LSM6DS3TR_C_FIFO_GY_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_FIFO_GY_NO_DEC:
+        *val = LSM6DS3TR_C_FIFO_GY_NO_DEC;
+        break;
+
+    case LSM6DS3TR_C_FIFO_GY_DEC_2:
+        *val = LSM6DS3TR_C_FIFO_GY_DEC_2;
+        break;
+
+    case LSM6DS3TR_C_FIFO_GY_DEC_3:
+        *val = LSM6DS3TR_C_FIFO_GY_DEC_3;
+        break;
+
+    case LSM6DS3TR_C_FIFO_GY_DEC_4:
+        *val = LSM6DS3TR_C_FIFO_GY_DEC_4;
+        break;
+
+    case LSM6DS3TR_C_FIFO_GY_DEC_8:
+        *val = LSM6DS3TR_C_FIFO_GY_DEC_8;
+        break;
+
+    case LSM6DS3TR_C_FIFO_GY_DEC_16:
+        *val = LSM6DS3TR_C_FIFO_GY_DEC_16;
+        break;
+
+    case LSM6DS3TR_C_FIFO_GY_DEC_32:
+        *val = LSM6DS3TR_C_FIFO_GY_DEC_32;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_FIFO_GY_DEC_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief   Selects Batching Data Rate (writing frequency in FIFO)
+  *          for third data set.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of dec_ds3_fifo in reg FIFO_CTRL4
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_dataset_3_batch_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_ds3_fifo_t val) {
+    lsm6ds3tr_c_fifo_ctrl4_t fifo_ctrl4;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+
+    if(ret == 0) {
+        fifo_ctrl4.dec_ds3_fifo = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief   Selects Batching Data Rate (writing frequency in FIFO)
+  *          for third data set.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of dec_ds3_fifo in reg FIFO_CTRL4
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_dataset_3_batch_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_ds3_fifo_t* val) {
+    lsm6ds3tr_c_fifo_ctrl4_t fifo_ctrl4;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+
+    switch(fifo_ctrl4.dec_ds3_fifo) {
+    case LSM6DS3TR_C_FIFO_DS3_DISABLE:
+        *val = LSM6DS3TR_C_FIFO_DS3_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS3_NO_DEC:
+        *val = LSM6DS3TR_C_FIFO_DS3_NO_DEC;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS3_DEC_2:
+        *val = LSM6DS3TR_C_FIFO_DS3_DEC_2;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS3_DEC_3:
+        *val = LSM6DS3TR_C_FIFO_DS3_DEC_3;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS3_DEC_4:
+        *val = LSM6DS3TR_C_FIFO_DS3_DEC_4;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS3_DEC_8:
+        *val = LSM6DS3TR_C_FIFO_DS3_DEC_8;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS3_DEC_16:
+        *val = LSM6DS3TR_C_FIFO_DS3_DEC_16;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS3_DEC_32:
+        *val = LSM6DS3TR_C_FIFO_DS3_DEC_32;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_FIFO_DS3_DEC_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief   Selects Batching Data Rate (writing frequency in FIFO)
+  *          for fourth data set.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of dec_ds4_fifo in reg FIFO_CTRL4
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_dataset_4_batch_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_ds4_fifo_t val) {
+    lsm6ds3tr_c_fifo_ctrl4_t fifo_ctrl4;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+
+    if(ret == 0) {
+        fifo_ctrl4.dec_ds4_fifo = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief   Selects Batching Data Rate (writing frequency in FIFO) for
+  *          fourth data set.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of dec_ds4_fifo in reg FIFO_CTRL4
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_dataset_4_batch_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_ds4_fifo_t* val) {
+    lsm6ds3tr_c_fifo_ctrl4_t fifo_ctrl4;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+
+    switch(fifo_ctrl4.dec_ds4_fifo) {
+    case LSM6DS3TR_C_FIFO_DS4_DISABLE:
+        *val = LSM6DS3TR_C_FIFO_DS4_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS4_NO_DEC:
+        *val = LSM6DS3TR_C_FIFO_DS4_NO_DEC;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS4_DEC_2:
+        *val = LSM6DS3TR_C_FIFO_DS4_DEC_2;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS4_DEC_3:
+        *val = LSM6DS3TR_C_FIFO_DS4_DEC_3;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS4_DEC_4:
+        *val = LSM6DS3TR_C_FIFO_DS4_DEC_4;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS4_DEC_8:
+        *val = LSM6DS3TR_C_FIFO_DS4_DEC_8;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS4_DEC_16:
+        *val = LSM6DS3TR_C_FIFO_DS4_DEC_16;
+        break;
+
+    case LSM6DS3TR_C_FIFO_DS4_DEC_32:
+        *val = LSM6DS3TR_C_FIFO_DS4_DEC_32;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_FIFO_DS4_DEC_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief   8-bit data storage in FIFO.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of only_high_data in reg FIFO_CTRL4
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_xl_gy_8bit_format_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_fifo_ctrl4_t fifo_ctrl4;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+
+    if(ret == 0) {
+        fifo_ctrl4.only_high_data = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  8-bit data storage in FIFO.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of only_high_data in reg FIFO_CTRL4
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_xl_gy_8bit_format_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_fifo_ctrl4_t fifo_ctrl4;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+    *val = fifo_ctrl4.only_high_data;
+
+    return ret;
+}
+
+/**
+  * @brief  Sensing chain FIFO stop values memorization at threshold
+  *         level.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of stop_on_fth in reg FIFO_CTRL4
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_stop_on_wtm_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_fifo_ctrl4_t fifo_ctrl4;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+
+    if(ret == 0) {
+        fifo_ctrl4.stop_on_fth = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Sensing chain FIFO stop values memorization at threshold
+  *         level.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of stop_on_fth in reg FIFO_CTRL4
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_stop_on_wtm_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_fifo_ctrl4_t fifo_ctrl4;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL4, (uint8_t*)&fifo_ctrl4, 1);
+    *val = fifo_ctrl4.stop_on_fth;
+
+    return ret;
+}
+
+/**
+  * @brief  FIFO mode selection.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of fifo_mode in reg FIFO_CTRL5
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_fifo_mode_t val) {
+    lsm6ds3tr_c_fifo_ctrl5_t fifo_ctrl5;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL5, (uint8_t*)&fifo_ctrl5, 1);
+
+    if(ret == 0) {
+        fifo_ctrl5.fifo_mode = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL5, (uint8_t*)&fifo_ctrl5, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  FIFO mode selection.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of fifo_mode in reg FIFO_CTRL5
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_fifo_mode_t* val) {
+    lsm6ds3tr_c_fifo_ctrl5_t fifo_ctrl5;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL5, (uint8_t*)&fifo_ctrl5, 1);
+
+    switch(fifo_ctrl5.fifo_mode) {
+    case LSM6DS3TR_C_BYPASS_MODE:
+        *val = LSM6DS3TR_C_BYPASS_MODE;
+        break;
+
+    case LSM6DS3TR_C_FIFO_MODE:
+        *val = LSM6DS3TR_C_FIFO_MODE;
+        break;
+
+    case LSM6DS3TR_C_STREAM_TO_FIFO_MODE:
+        *val = LSM6DS3TR_C_STREAM_TO_FIFO_MODE;
+        break;
+
+    case LSM6DS3TR_C_BYPASS_TO_STREAM_MODE:
+        *val = LSM6DS3TR_C_BYPASS_TO_STREAM_MODE;
+        break;
+
+    case LSM6DS3TR_C_STREAM_MODE:
+        *val = LSM6DS3TR_C_STREAM_MODE;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_FIFO_MODE_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  FIFO ODR selection, setting FIFO_MODE also.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of odr_fifo in reg FIFO_CTRL5
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_data_rate_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_fifo_t val) {
+    lsm6ds3tr_c_fifo_ctrl5_t fifo_ctrl5;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL5, (uint8_t*)&fifo_ctrl5, 1);
+
+    if(ret == 0) {
+        fifo_ctrl5.odr_fifo = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_FIFO_CTRL5, (uint8_t*)&fifo_ctrl5, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  FIFO ODR selection, setting FIFO_MODE also.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of odr_fifo in reg FIFO_CTRL5
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_fifo_data_rate_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_fifo_t* val) {
+    lsm6ds3tr_c_fifo_ctrl5_t fifo_ctrl5;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_FIFO_CTRL5, (uint8_t*)&fifo_ctrl5, 1);
+
+    switch(fifo_ctrl5.odr_fifo) {
+    case LSM6DS3TR_C_FIFO_DISABLE:
+        *val = LSM6DS3TR_C_FIFO_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_FIFO_12Hz5:
+        *val = LSM6DS3TR_C_FIFO_12Hz5;
+        break;
+
+    case LSM6DS3TR_C_FIFO_26Hz:
+        *val = LSM6DS3TR_C_FIFO_26Hz;
+        break;
+
+    case LSM6DS3TR_C_FIFO_52Hz:
+        *val = LSM6DS3TR_C_FIFO_52Hz;
+        break;
+
+    case LSM6DS3TR_C_FIFO_104Hz:
+        *val = LSM6DS3TR_C_FIFO_104Hz;
+        break;
+
+    case LSM6DS3TR_C_FIFO_208Hz:
+        *val = LSM6DS3TR_C_FIFO_208Hz;
+        break;
+
+    case LSM6DS3TR_C_FIFO_416Hz:
+        *val = LSM6DS3TR_C_FIFO_416Hz;
+        break;
+
+    case LSM6DS3TR_C_FIFO_833Hz:
+        *val = LSM6DS3TR_C_FIFO_833Hz;
+        break;
+
+    case LSM6DS3TR_C_FIFO_1k66Hz:
+        *val = LSM6DS3TR_C_FIFO_1k66Hz;
+        break;
+
+    case LSM6DS3TR_C_FIFO_3k33Hz:
+        *val = LSM6DS3TR_C_FIFO_3k33Hz;
+        break;
+
+    case LSM6DS3TR_C_FIFO_6k66Hz:
+        *val = LSM6DS3TR_C_FIFO_6k66Hz;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_FIFO_RATE_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_DEN_functionality
+  * @brief       This section groups all the functions concerning DEN
+  *              functionality.
+  * @{
+  *
+  */
+
+/**
+  * @brief  DEN active level configuration.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of den_lh in reg CTRL5_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_polarity_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_lh_t val) {
+    lsm6ds3tr_c_ctrl5_c_t ctrl5_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+
+    if(ret == 0) {
+        ctrl5_c.den_lh = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  DEN active level configuration.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of den_lh in reg CTRL5_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_polarity_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_lh_t* val) {
+    lsm6ds3tr_c_ctrl5_c_t ctrl5_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL5_C, (uint8_t*)&ctrl5_c, 1);
+
+    switch(ctrl5_c.den_lh) {
+    case LSM6DS3TR_C_DEN_ACT_LOW:
+        *val = LSM6DS3TR_C_DEN_ACT_LOW;
+        break;
+
+    case LSM6DS3TR_C_DEN_ACT_HIGH:
+        *val = LSM6DS3TR_C_DEN_ACT_HIGH;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_DEN_POL_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  DEN functionality marking mode[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of den_mode in reg CTRL6_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_mode_t val) {
+    lsm6ds3tr_c_ctrl6_c_t ctrl6_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+
+    if(ret == 0) {
+        ctrl6_c.den_mode = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  DEN functionality marking mode[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of den_mode in reg CTRL6_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_mode_t* val) {
+    lsm6ds3tr_c_ctrl6_c_t ctrl6_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL6_C, (uint8_t*)&ctrl6_c, 1);
+
+    switch(ctrl6_c.den_mode) {
+    case LSM6DS3TR_C_DEN_DISABLE:
+        *val = LSM6DS3TR_C_DEN_DISABLE;
+        break;
+
+    case LSM6DS3TR_C_LEVEL_LETCHED:
+        *val = LSM6DS3TR_C_LEVEL_LETCHED;
+        break;
+
+    case LSM6DS3TR_C_LEVEL_TRIGGER:
+        *val = LSM6DS3TR_C_LEVEL_TRIGGER;
+        break;
+
+    case LSM6DS3TR_C_EDGE_TRIGGER:
+        *val = LSM6DS3TR_C_EDGE_TRIGGER;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_DEN_MODE_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Extend DEN functionality to accelerometer sensor.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of den_xl_g in reg CTRL9_XL
+  *                             and den_xl_en in CTRL4_C.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_enable_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_xl_en_t val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+
+    if(ret == 0) {
+        ctrl9_xl.den_xl_g = (uint8_t)val & 0x01U;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+
+            if(ret == 0) {
+                ctrl4_c.den_xl_en = (uint8_t)val & 0x02U;
+                ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Extend DEN functionality to accelerometer sensor. [get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of den_xl_g in reg CTRL9_XL
+  *                             and den_xl_en in CTRL4_C.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_enable_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_xl_en_t* val) {
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL4_C, (uint8_t*)&ctrl4_c, 1);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+
+        switch((ctrl4_c.den_xl_en << 1) + ctrl9_xl.den_xl_g) {
+        case LSM6DS3TR_C_STAMP_IN_GY_DATA:
+            *val = LSM6DS3TR_C_STAMP_IN_GY_DATA;
+            break;
+
+        case LSM6DS3TR_C_STAMP_IN_XL_DATA:
+            *val = LSM6DS3TR_C_STAMP_IN_XL_DATA;
+            break;
+
+        case LSM6DS3TR_C_STAMP_IN_GY_XL_DATA:
+            *val = LSM6DS3TR_C_STAMP_IN_GY_XL_DATA;
+            break;
+
+        default:
+            *val = LSM6DS3TR_C_DEN_STAMP_ND;
+            break;
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  DEN value stored in LSB of Z-axis.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of den_z in reg CTRL9_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_mark_axis_z_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+
+    if(ret == 0) {
+        ctrl9_xl.den_z = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  DEN value stored in LSB of Z-axis.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of den_z in reg CTRL9_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_mark_axis_z_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+    *val = ctrl9_xl.den_z;
+
+    return ret;
+}
+
+/**
+  * @brief  DEN value stored in LSB of Y-axis.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of den_y in reg CTRL9_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_mark_axis_y_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+
+    if(ret == 0) {
+        ctrl9_xl.den_y = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  DEN value stored in LSB of Y-axis.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of den_y in reg CTRL9_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_mark_axis_y_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+    *val = ctrl9_xl.den_y;
+
+    return ret;
+}
+
+/**
+  * @brief  DEN value stored in LSB of X-axis.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of den_x in reg CTRL9_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_mark_axis_x_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+
+    if(ret == 0) {
+        ctrl9_xl.den_x = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  DEN value stored in LSB of X-axis.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of den_x in reg CTRL9_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_den_mark_axis_x_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+    *val = ctrl9_xl.den_x;
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_Pedometer
+  * @brief       This section groups all the functions that manage pedometer.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Reset pedometer step counter.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of pedo_rst_step in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_step_reset_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+
+    if(ret == 0) {
+        ctrl10_c.pedo_rst_step = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Reset pedometer step counter.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of pedo_rst_step in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_step_reset_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    *val = ctrl10_c.pedo_rst_step;
+
+    return ret;
+}
+
+/**
+  * @brief  Enable pedometer algorithm.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of pedo_en in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_sens_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+
+    if(ret == 0) {
+        ctrl10_c.pedo_en = val;
+
+        if(val != 0x00U) {
+            ctrl10_c.func_en = val;
+        }
+
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  pedo_sens:   Enable pedometer algorithm.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of pedo_en in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_sens_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    *val = ctrl10_c.pedo_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Minimum threshold to detect a peak. Default is 10h.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of ths_min in reg
+  *                      CONFIG_PEDO_THS_MIN
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_threshold_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_config_pedo_ths_min_t config_pedo_ths_min;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(
+            ctx, LSM6DS3TR_C_CONFIG_PEDO_THS_MIN, (uint8_t*)&config_pedo_ths_min, 1);
+
+        if(ret == 0) {
+            config_pedo_ths_min.ths_min = val;
+            ret = lsm6ds3tr_c_write_reg(
+                ctx, LSM6DS3TR_C_CONFIG_PEDO_THS_MIN, (uint8_t*)&config_pedo_ths_min, 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Minimum threshold to detect a peak. Default is 10h.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of ths_min in reg  CONFIG_PEDO_THS_MIN
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_threshold_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_config_pedo_ths_min_t config_pedo_ths_min;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(
+            ctx, LSM6DS3TR_C_CONFIG_PEDO_THS_MIN, (uint8_t*)&config_pedo_ths_min, 1);
+
+        if(ret == 0) {
+            *val = config_pedo_ths_min.ths_min;
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  pedo_full_scale:   Pedometer data range.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of pedo_fs in
+  *                            reg CONFIG_PEDO_THS_MIN
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_full_scale_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_pedo_fs_t val) {
+    lsm6ds3tr_c_config_pedo_ths_min_t config_pedo_ths_min;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(
+            ctx, LSM6DS3TR_C_CONFIG_PEDO_THS_MIN, (uint8_t*)&config_pedo_ths_min, 1);
+
+        if(ret == 0) {
+            config_pedo_ths_min.pedo_fs = (uint8_t)val;
+            ret = lsm6ds3tr_c_write_reg(
+                ctx, LSM6DS3TR_C_CONFIG_PEDO_THS_MIN, (uint8_t*)&config_pedo_ths_min, 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Pedometer data range.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of pedo_fs in
+  *                            reg CONFIG_PEDO_THS_MIN
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_full_scale_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_pedo_fs_t* val) {
+    lsm6ds3tr_c_config_pedo_ths_min_t config_pedo_ths_min;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(
+            ctx, LSM6DS3TR_C_CONFIG_PEDO_THS_MIN, (uint8_t*)&config_pedo_ths_min, 1);
+
+        if(ret == 0) {
+            switch(config_pedo_ths_min.pedo_fs) {
+            case LSM6DS3TR_C_PEDO_AT_2g:
+                *val = LSM6DS3TR_C_PEDO_AT_2g;
+                break;
+
+            case LSM6DS3TR_C_PEDO_AT_4g:
+                *val = LSM6DS3TR_C_PEDO_AT_4g;
+                break;
+
+            default:
+                *val = LSM6DS3TR_C_PEDO_FS_ND;
+                break;
+            }
+
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Pedometer debounce configuration register (r/w).[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of deb_step in reg PEDO_DEB_REG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_debounce_steps_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_pedo_deb_reg_t pedo_deb_reg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_PEDO_DEB_REG, (uint8_t*)&pedo_deb_reg, 1);
+
+        if(ret == 0) {
+            pedo_deb_reg.deb_step = val;
+            ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_PEDO_DEB_REG, (uint8_t*)&pedo_deb_reg, 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Pedometer debounce configuration register (r/w).[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of deb_step in reg PEDO_DEB_REG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_debounce_steps_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_pedo_deb_reg_t pedo_deb_reg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_PEDO_DEB_REG, (uint8_t*)&pedo_deb_reg, 1);
+
+        if(ret == 0) {
+            *val = pedo_deb_reg.deb_step;
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Debounce time. If the time between two consecutive steps is
+  *         greater than  DEB_TIME*80ms, the debouncer is reactivated.
+  *         Default value: 01101[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of deb_time in reg PEDO_DEB_REG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_timeout_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_pedo_deb_reg_t pedo_deb_reg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_PEDO_DEB_REG, (uint8_t*)&pedo_deb_reg, 1);
+
+        if(ret == 0) {
+            pedo_deb_reg.deb_time = val;
+            ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_PEDO_DEB_REG, (uint8_t*)&pedo_deb_reg, 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Debounce time. If the time between two consecutive steps is
+  *         greater than  DEB_TIME*80ms, the debouncer is reactivated.
+  *         Default value: 01101[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of deb_time in reg PEDO_DEB_REG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_timeout_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_pedo_deb_reg_t pedo_deb_reg;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_PEDO_DEB_REG, (uint8_t*)&pedo_deb_reg, 1);
+
+        if(ret == 0) {
+            *val = pedo_deb_reg.deb_time;
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Time period register for step detection on delta time (r/w).[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that contains data to write
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_steps_period_set(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_STEP_COUNT_DELTA, buff, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Time period register for step detection on delta time (r/w).[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_pedo_steps_period_get(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_STEP_COUNT_DELTA, buff, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_significant_motion
+  * @brief       This section groups all the functions that manage the
+  *              significant motion detection.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Enable significant motion detection function.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of sign_motion_en in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_motion_sens_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+
+    if(ret == 0) {
+        ctrl10_c.sign_motion_en = val;
+
+        if(val != 0x00U) {
+            ctrl10_c.func_en = val;
+            ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable significant motion detection function.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of sign_motion_en in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_motion_sens_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    *val = ctrl10_c.sign_motion_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Significant motion threshold.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that store significant motion threshold.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_motion_threshold_set(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SM_THS, buff, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Significant motion threshold.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that store significant motion threshold.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_motion_threshold_get(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SM_THS, buff, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_tilt_detection
+  * @brief       This section groups all the functions that manage the tilt
+  *              event detection.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Enable tilt calculation.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tilt_en in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tilt_sens_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+
+    if(ret == 0) {
+        ctrl10_c.tilt_en = val;
+
+        if(val != 0x00U) {
+            ctrl10_c.func_en = val;
+        }
+
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable tilt calculation.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tilt_en in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tilt_sens_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    *val = ctrl10_c.tilt_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Enable tilt calculation.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tilt_en in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_wrist_tilt_sens_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+
+    if(ret == 0) {
+        ctrl10_c.wrist_tilt_en = val;
+
+        if(val != 0x00U) {
+            ctrl10_c.func_en = val;
+        }
+
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable tilt calculation.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tilt_en in reg CTRL10_C
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_wrist_tilt_sens_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    *val = ctrl10_c.wrist_tilt_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Absolute Wrist Tilt latency register (r/w).
+  *         Absolute wrist tilt latency parameters.
+  *         1 LSB = 40 ms. Default value: 0Fh (600 ms).[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that contains data to write
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tilt_latency_set(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_B);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_A_WRIST_TILT_LAT, buff, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Absolute Wrist Tilt latency register (r/w).
+  *         Absolute wrist tilt latency parameters.
+  *         1 LSB = 40 ms. Default value: 0Fh (600 ms).[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tilt_latency_get(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_B);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_A_WRIST_TILT_LAT, buff, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Absolute Wrist Tilt threshold register(r/w).
+  *         Absolute wrist tilt threshold parameters.
+  *         1 LSB = 15.625 mg.Default value: 20h (500 mg).[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that contains data to write
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tilt_threshold_set(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_B);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_A_WRIST_TILT_THS, buff, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Absolute Wrist Tilt threshold register(r/w).
+  *         Absolute wrist tilt threshold parameters.
+  *         1 LSB = 15.625 mg.Default value: 20h (500 mg).[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tilt_threshold_get(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_B);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_A_WRIST_TILT_THS, buff, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Absolute Wrist Tilt mask register (r/w).[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Registers A_WRIST_TILT_MASK
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tilt_src_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_a_wrist_tilt_mask_t* val) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_B);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_A_WRIST_TILT_MASK, (uint8_t*)val, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Absolute Wrist Tilt mask register (r/w).[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Registers A_WRIST_TILT_MASK
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_tilt_src_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_a_wrist_tilt_mask_t* val) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_B);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_A_WRIST_TILT_MASK, (uint8_t*)val, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_ magnetometer_sensor
+  * @brief       This section groups all the functions that manage additional
+  *              magnetometer sensor.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Enable soft-iron correction algorithm for magnetometer.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of soft_en in reg CTRL9_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mag_soft_iron_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+
+    if(ret == 0) {
+        ctrl9_xl.soft_en = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable soft-iron correction algorithm for magnetometer.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of soft_en in reg CTRL9_XL
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mag_soft_iron_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL9_XL, (uint8_t*)&ctrl9_xl, 1);
+    *val = ctrl9_xl.soft_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Enable hard-iron correction algorithm for magnetometer.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of iron_en in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mag_hard_iron_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+    if(ret == 0) {
+        master_config.iron_en = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+
+            if(ret == 0) {
+                if(val != 0x00U) {
+                    ctrl10_c.func_en = val;
+                }
+
+                ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Enable hard-iron correction algorithm for magnetometer.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of iron_en in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mag_hard_iron_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    *val = master_config.iron_en;
+
+    return ret;
+}
+
+/**
+  * @brief  Soft iron 3x3 matrix. Value are expressed in sign-module format.
+  *         (Es. SVVVVVVVb where S is the sign 0/+1/- and V is the value).[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that contains data to write
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mag_soft_iron_mat_set(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MAG_SI_XX, buff, 9);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Soft iron 3x3 matrix. Value are expressed in sign-module format.
+  *         (Es. SVVVVVVVb where S is the sign 0/+1/- and V is the value).[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mag_soft_iron_mat_get(stmdev_ctx_t* ctx, uint8_t* buff) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MAG_SI_XX, buff, 9);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Offset for hard-iron compensation register (r/w). The value is
+  *         expressed as a 16-bit word in two’s complement.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that contains data to write
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mag_offset_set(stmdev_ctx_t* ctx, int16_t* val) {
+    uint8_t buff[6];
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        buff[1] = (uint8_t)((uint16_t)val[0] / 256U);
+        buff[0] = (uint8_t)((uint16_t)val[0] - (buff[1] * 256U));
+        buff[3] = (uint8_t)((uint16_t)val[1] / 256U);
+        buff[2] = (uint8_t)((uint16_t)val[1] - (buff[3] * 256U));
+        buff[5] = (uint8_t)((uint16_t)val[2] / 256U);
+        buff[4] = (uint8_t)((uint16_t)val[2] - (buff[5] * 256U));
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MAG_OFFX_L, buff, 6);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Offset for hard-iron compensation register(r/w).
+  *         The value is expressed as a 16-bit word in two’s complement.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  buff   Buffer that stores data read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_mag_offset_get(stmdev_ctx_t* ctx, int16_t* val) {
+    uint8_t buff[6];
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MAG_OFFX_L, buff, 6);
+
+        if(ret == 0) {
+            val[0] = (int16_t)buff[1];
+            val[0] = (val[0] * 256) + (int16_t)buff[0];
+            val[1] = (int16_t)buff[3];
+            val[1] = (val[1] * 256) + (int16_t)buff[2];
+            val[2] = (int16_t)buff[5];
+            val[2] = (val[2] * 256) + (int16_t)buff[4];
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @defgroup    LSM6DS3TR_C_Sensor_hub
+  * @brief       This section groups all the functions that manage the sensor
+  *              hub functionality.
+  * @{
+  *
+  */
+
+/**
+  * @brief  Enable function.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values func_en
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_func_en_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+
+    if(ret == 0) {
+        ctrl10_c.func_en = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_CTRL10_C, (uint8_t*)&ctrl10_c, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Sensor synchronization time frame with the step of 500 ms and
+  *         full range of 5s. Unsigned 8-bit.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tph in reg SENSOR_SYNC_TIME_FRAME
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_sync_sens_frame_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_sensor_sync_time_frame_t sensor_sync_time_frame;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(
+        ctx, LSM6DS3TR_C_SENSOR_SYNC_TIME_FRAME, (uint8_t*)&sensor_sync_time_frame, 1);
+
+    if(ret == 0) {
+        sensor_sync_time_frame.tph = val;
+        ret = lsm6ds3tr_c_write_reg(
+            ctx, LSM6DS3TR_C_SENSOR_SYNC_TIME_FRAME, (uint8_t*)&sensor_sync_time_frame, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Sensor synchronization time frame with the step of 500 ms and
+  *         full range of 5s. Unsigned 8-bit.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of tph in reg  SENSOR_SYNC_TIME_FRAME
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_sync_sens_frame_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_sensor_sync_time_frame_t sensor_sync_time_frame;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(
+        ctx, LSM6DS3TR_C_SENSOR_SYNC_TIME_FRAME, (uint8_t*)&sensor_sync_time_frame, 1);
+    *val = sensor_sync_time_frame.tph;
+
+    return ret;
+}
+
+/**
+  * @brief  Resolution ratio of error code for sensor synchronization.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of rr in reg  SENSOR_SYNC_RES_RATIO
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_sync_sens_ratio_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_rr_t val) {
+    lsm6ds3tr_c_sensor_sync_res_ratio_t sensor_sync_res_ratio;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(
+        ctx, LSM6DS3TR_C_SENSOR_SYNC_RES_RATIO, (uint8_t*)&sensor_sync_res_ratio, 1);
+
+    if(ret == 0) {
+        sensor_sync_res_ratio.rr = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(
+            ctx, LSM6DS3TR_C_SENSOR_SYNC_RES_RATIO, (uint8_t*)&sensor_sync_res_ratio, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Resolution ratio of error code for sensor synchronization.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of rr in reg  SENSOR_SYNC_RES_RATIO
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_sync_sens_ratio_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_rr_t* val) {
+    lsm6ds3tr_c_sensor_sync_res_ratio_t sensor_sync_res_ratio;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(
+        ctx, LSM6DS3TR_C_SENSOR_SYNC_RES_RATIO, (uint8_t*)&sensor_sync_res_ratio, 1);
+
+    switch(sensor_sync_res_ratio.rr) {
+    case LSM6DS3TR_C_RES_RATIO_2_11:
+        *val = LSM6DS3TR_C_RES_RATIO_2_11;
+        break;
+
+    case LSM6DS3TR_C_RES_RATIO_2_12:
+        *val = LSM6DS3TR_C_RES_RATIO_2_12;
+        break;
+
+    case LSM6DS3TR_C_RES_RATIO_2_13:
+        *val = LSM6DS3TR_C_RES_RATIO_2_13;
+        break;
+
+    case LSM6DS3TR_C_RES_RATIO_2_14:
+        *val = LSM6DS3TR_C_RES_RATIO_2_14;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_RES_RATIO_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Sensor hub I2C master enable.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of master_on in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_master_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+    if(ret == 0) {
+        master_config.master_on = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Sensor hub I2C master enable.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of master_on in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_master_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    *val = master_config.master_on;
+
+    return ret;
+}
+
+/**
+  * @brief  I2C interface pass-through.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of pass_through_mode in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_pass_through_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+    if(ret == 0) {
+        master_config.pass_through_mode = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  I2C interface pass-through.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of pass_through_mode in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_pass_through_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    *val = master_config.pass_through_mode;
+
+    return ret;
+}
+
+/**
+  * @brief  Master I2C pull-up enable/disable.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of pull_up_en in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_pin_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_pull_up_en_t val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+    if(ret == 0) {
+        master_config.pull_up_en = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Master I2C pull-up enable/disable.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of pull_up_en in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_pin_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_pull_up_en_t* val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+    switch(master_config.pull_up_en) {
+    case LSM6DS3TR_C_EXT_PULL_UP:
+        *val = LSM6DS3TR_C_EXT_PULL_UP;
+        break;
+
+    case LSM6DS3TR_C_INTERNAL_PULL_UP:
+        *val = LSM6DS3TR_C_INTERNAL_PULL_UP;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_SH_PIN_MODE;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Sensor hub trigger signal selection.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of start_config in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_syncro_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_start_config_t val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+    if(ret == 0) {
+        master_config.start_config = (uint8_t)val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Sensor hub trigger signal selection.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of start_config in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_syncro_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_start_config_t* val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+    switch(master_config.start_config) {
+    case LSM6DS3TR_C_XL_GY_DRDY:
+        *val = LSM6DS3TR_C_XL_GY_DRDY;
+        break;
+
+    case LSM6DS3TR_C_EXT_ON_INT2_PIN:
+        *val = LSM6DS3TR_C_EXT_ON_INT2_PIN;
+        break;
+
+    default:
+        *val = LSM6DS3TR_C_SH_SYNCRO_ND;
+        break;
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Manage the Master DRDY signal on INT1 pad.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of drdy_on_int1 in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_drdy_on_int1_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+
+    if(ret == 0) {
+        master_config.drdy_on_int1 = val;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Manage the Master DRDY signal on INT1 pad.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of drdy_on_int1 in reg MASTER_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_drdy_on_int1_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_master_config_t master_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CONFIG, (uint8_t*)&master_config, 1);
+    *val = master_config.drdy_on_int1;
+
+    return ret;
+}
+
+/**
+  * @brief  Sensor hub output registers.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Structure of registers from SENSORHUB1_REG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_read_data_raw_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_emb_sh_read_t* val) {
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SENSORHUB1_REG, (uint8_t*)&(val->sh_byte_1), 12);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(
+            ctx, LSM6DS3TR_C_SENSORHUB13_REG, (uint8_t*)&(val->sh_byte_13), 6);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Master command code used for stamping for sensor sync.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of master_cmd_code in
+  *                reg MASTER_CMD_CODE
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_cmd_sens_sync_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_master_cmd_code_t master_cmd_code;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CMD_CODE, (uint8_t*)&master_cmd_code, 1);
+
+    if(ret == 0) {
+        master_cmd_code.master_cmd_code = val;
+        ret =
+            lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_MASTER_CMD_CODE, (uint8_t*)&master_cmd_code, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Master command code used for stamping for sensor sync.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of master_cmd_code in
+  *                reg MASTER_CMD_CODE
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_cmd_sens_sync_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_master_cmd_code_t master_cmd_code;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_MASTER_CMD_CODE, (uint8_t*)&master_cmd_code, 1);
+    *val = master_cmd_code.master_cmd_code;
+
+    return ret;
+}
+
+/**
+  * @brief  Error code used for sensor synchronization.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of error_code in
+  *                reg SENS_SYNC_SPI_ERROR_CODE.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_spi_sync_error_set(stmdev_ctx_t* ctx, uint8_t val) {
+    lsm6ds3tr_c_sens_sync_spi_error_code_t sens_sync_spi_error_code;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(
+        ctx, LSM6DS3TR_C_SENS_SYNC_SPI_ERROR_CODE, (uint8_t*)&sens_sync_spi_error_code, 1);
+
+    if(ret == 0) {
+        sens_sync_spi_error_code.error_code = val;
+        ret = lsm6ds3tr_c_write_reg(
+            ctx, LSM6DS3TR_C_SENS_SYNC_SPI_ERROR_CODE, (uint8_t*)&sens_sync_spi_error_code, 1);
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Error code used for sensor synchronization.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of error_code in
+  *                reg SENS_SYNC_SPI_ERROR_CODE.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_spi_sync_error_get(stmdev_ctx_t* ctx, uint8_t* val) {
+    lsm6ds3tr_c_sens_sync_spi_error_code_t sens_sync_spi_error_code;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_read_reg(
+        ctx, LSM6DS3TR_C_SENS_SYNC_SPI_ERROR_CODE, (uint8_t*)&sens_sync_spi_error_code, 1);
+    *val = sens_sync_spi_error_code.error_code;
+
+    return ret;
+}
+
+/**
+  * @brief   Number of external sensors to be read by the sensor hub.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of aux_sens_on in reg SLAVE0_CONFIG.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_num_of_dev_connected_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_aux_sens_on_t val) {
+    lsm6ds3tr_c_slave0_config_t slave0_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE0_CONFIG, (uint8_t*)&slave0_config, 1);
+
+        if(ret == 0) {
+            slave0_config.aux_sens_on = (uint8_t)val;
+            ret =
+                lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLAVE0_CONFIG, (uint8_t*)&slave0_config, 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief   Number of external sensors to be read by the sensor hub.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of aux_sens_on in reg SLAVE0_CONFIG.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t
+    lsm6ds3tr_c_sh_num_of_dev_connected_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_aux_sens_on_t* val) {
+    lsm6ds3tr_c_slave0_config_t slave0_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE0_CONFIG, (uint8_t*)&slave0_config, 1);
+
+        if(ret == 0) {
+            switch(slave0_config.aux_sens_on) {
+            case LSM6DS3TR_C_SLV_0:
+                *val = LSM6DS3TR_C_SLV_0;
+                break;
+
+            case LSM6DS3TR_C_SLV_0_1:
+                *val = LSM6DS3TR_C_SLV_0_1;
+                break;
+
+            case LSM6DS3TR_C_SLV_0_1_2:
+                *val = LSM6DS3TR_C_SLV_0_1_2;
+                break;
+
+            case LSM6DS3TR_C_SLV_0_1_2_3:
+                *val = LSM6DS3TR_C_SLV_0_1_2_3;
+                break;
+
+            default:
+                *val = LSM6DS3TR_C_SLV_EN_ND;
+                break;
+            }
+
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Configure slave 0 for perform a write.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Structure that contain:
+  *                  - uint8_t slv_add;    8 bit i2c device address
+  *                  - uint8_t slv_subadd; 8 bit register device address
+  *                  - uint8_t slv_data;   8 bit data to write
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_cfg_write(stmdev_ctx_t* ctx, lsm6ds3tr_c_sh_cfg_write_t* val) {
+    lsm6ds3tr_c_slv0_add_t slv0_add;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        slv0_add.slave0_add = val->slv0_add;
+        slv0_add.rw_0 = 0;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLV0_ADD, (uint8_t*)&slv0_add, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLV0_SUBADD, &(val->slv0_subadd), 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_write_reg(
+                    ctx, LSM6DS3TR_C_DATAWRITE_SRC_MODE_SUB_SLV0, &(val->slv0_data), 1);
+
+                if(ret == 0) {
+                    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+                }
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Configure slave 0 for perform a read.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Structure that contain:
+  *                  - uint8_t slv_add;    8 bit i2c device address
+  *                  - uint8_t slv_subadd; 8 bit register device address
+  *                  - uint8_t slv_len;    num of bit to read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slv0_cfg_read(stmdev_ctx_t* ctx, lsm6ds3tr_c_sh_cfg_read_t* val) {
+    lsm6ds3tr_c_slave0_config_t slave0_config;
+    lsm6ds3tr_c_slv0_add_t slv0_add;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        slv0_add.slave0_add = val->slv_add;
+        slv0_add.rw_0 = 1;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLV0_ADD, (uint8_t*)&slv0_add, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLV0_SUBADD, &(val->slv_subadd), 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_read_reg(
+                    ctx, LSM6DS3TR_C_SLAVE0_CONFIG, (uint8_t*)&slave0_config, 1);
+                slave0_config.slave0_numop = val->slv_len;
+
+                if(ret == 0) {
+                    ret = lsm6ds3tr_c_write_reg(
+                        ctx, LSM6DS3TR_C_SLAVE0_CONFIG, (uint8_t*)&slave0_config, 1);
+
+                    if(ret == 0) {
+                        ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+                    }
+                }
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Configure slave 1 for perform a read.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Structure that contain:
+  *                  - uint8_t slv_add;    8 bit i2c device address
+  *                  - uint8_t slv_subadd; 8 bit register device address
+  *                  - uint8_t slv_len;    num of bit to read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slv1_cfg_read(stmdev_ctx_t* ctx, lsm6ds3tr_c_sh_cfg_read_t* val) {
+    lsm6ds3tr_c_slave1_config_t slave1_config;
+    lsm6ds3tr_c_slv1_add_t slv1_add;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        slv1_add.slave1_add = val->slv_add;
+        slv1_add.r_1 = 1;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLV1_ADD, (uint8_t*)&slv1_add, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLV1_SUBADD, &(val->slv_subadd), 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_read_reg(
+                    ctx, LSM6DS3TR_C_SLAVE1_CONFIG, (uint8_t*)&slave1_config, 1);
+                slave1_config.slave1_numop = val->slv_len;
+
+                if(ret == 0) {
+                    ret = lsm6ds3tr_c_write_reg(
+                        ctx, LSM6DS3TR_C_SLAVE1_CONFIG, (uint8_t*)&slave1_config, 1);
+
+                    if(ret == 0) {
+                        ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+                    }
+                }
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Configure slave 2 for perform a read.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Structure that contain:
+  *                  - uint8_t slv_add;    8 bit i2c device address
+  *                  - uint8_t slv_subadd; 8 bit register device address
+  *                  - uint8_t slv_len;    num of bit to read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slv2_cfg_read(stmdev_ctx_t* ctx, lsm6ds3tr_c_sh_cfg_read_t* val) {
+    lsm6ds3tr_c_slv2_add_t slv2_add;
+    lsm6ds3tr_c_slave2_config_t slave2_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        slv2_add.slave2_add = val->slv_add;
+        slv2_add.r_2 = 1;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLV2_ADD, (uint8_t*)&slv2_add, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLV2_SUBADD, &(val->slv_subadd), 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_read_reg(
+                    ctx, LSM6DS3TR_C_SLAVE2_CONFIG, (uint8_t*)&slave2_config, 1);
+
+                if(ret == 0) {
+                    slave2_config.slave2_numop = val->slv_len;
+                    ret = lsm6ds3tr_c_write_reg(
+                        ctx, LSM6DS3TR_C_SLAVE2_CONFIG, (uint8_t*)&slave2_config, 1);
+
+                    if(ret == 0) {
+                        ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+                    }
+                }
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Configure slave 3 for perform a read.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Structure that contain:
+  *                  - uint8_t slv_add;    8 bit i2c device address
+  *                  - uint8_t slv_subadd; 8 bit register device address
+  *                  - uint8_t slv_len;    num of bit to read
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slv3_cfg_read(stmdev_ctx_t* ctx, lsm6ds3tr_c_sh_cfg_read_t* val) {
+    lsm6ds3tr_c_slave3_config_t slave3_config;
+    lsm6ds3tr_c_slv3_add_t slv3_add;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        slv3_add.slave3_add = val->slv_add;
+        slv3_add.r_3 = 1;
+        ret = lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLV3_ADD, (uint8_t*)&slv3_add, 1);
+
+        if(ret == 0) {
+            ret = lsm6ds3tr_c_write_reg(
+                ctx, LSM6DS3TR_C_SLV3_SUBADD, (uint8_t*)&(val->slv_subadd), 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_read_reg(
+                    ctx, LSM6DS3TR_C_SLAVE3_CONFIG, (uint8_t*)&slave3_config, 1);
+
+                if(ret == 0) {
+                    slave3_config.slave3_numop = val->slv_len;
+                    ret = lsm6ds3tr_c_write_reg(
+                        ctx, LSM6DS3TR_C_SLAVE3_CONFIG, (uint8_t*)&slave3_config, 1);
+
+                    if(ret == 0) {
+                        ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+                    }
+                }
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Decimation of read operation on Slave 0 starting from the
+  *         sensor hub trigger.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of slave0_rate in reg SLAVE0_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slave_0_dec_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave0_rate_t val) {
+    lsm6ds3tr_c_slave0_config_t slave0_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE0_CONFIG, (uint8_t*)&slave0_config, 1);
+
+        if(ret == 0) {
+            slave0_config.slave0_rate = (uint8_t)val;
+            ret =
+                lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLAVE0_CONFIG, (uint8_t*)&slave0_config, 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Decimation of read operation on Slave 0 starting from the
+  *         sensor hub trigger.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of slave0_rate in reg SLAVE0_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slave_0_dec_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave0_rate_t* val) {
+    lsm6ds3tr_c_slave0_config_t slave0_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE0_CONFIG, (uint8_t*)&slave0_config, 1);
+
+        if(ret == 0) {
+            switch(slave0_config.slave0_rate) {
+            case LSM6DS3TR_C_SL0_NO_DEC:
+                *val = LSM6DS3TR_C_SL0_NO_DEC;
+                break;
+
+            case LSM6DS3TR_C_SL0_DEC_2:
+                *val = LSM6DS3TR_C_SL0_DEC_2;
+                break;
+
+            case LSM6DS3TR_C_SL0_DEC_4:
+                *val = LSM6DS3TR_C_SL0_DEC_4;
+                break;
+
+            case LSM6DS3TR_C_SL0_DEC_8:
+                *val = LSM6DS3TR_C_SL0_DEC_8;
+                break;
+
+            default:
+                *val = LSM6DS3TR_C_SL0_DEC_ND;
+                break;
+            }
+
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Slave 0 write operation is performed only at the first sensor
+  *         hub cycle.
+  *         This is effective if the Aux_sens_on[1:0] field in
+  *         SLAVE0_CONFIG(04h) is set to a value other than 00.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of write_once in reg SLAVE1_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_write_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_write_once_t val) {
+    lsm6ds3tr_c_slave1_config_t slave1_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE1_CONFIG, (uint8_t*)&slave1_config, 1);
+        slave1_config.write_once = (uint8_t)val;
+
+        if(ret == 0) {
+            ret =
+                lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLAVE1_CONFIG, (uint8_t*)&slave1_config, 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Slave 0 write operation is performed only at the first sensor
+  *         hub cycle.
+  *         This is effective if the Aux_sens_on[1:0] field in
+  *         SLAVE0_CONFIG(04h) is set to a value other than 00.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of write_once in reg SLAVE1_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_write_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_write_once_t* val) {
+    lsm6ds3tr_c_slave1_config_t slave1_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE1_CONFIG, (uint8_t*)&slave1_config, 1);
+
+        if(ret == 0) {
+            switch(slave1_config.write_once) {
+            case LSM6DS3TR_C_EACH_SH_CYCLE:
+                *val = LSM6DS3TR_C_EACH_SH_CYCLE;
+                break;
+
+            case LSM6DS3TR_C_ONLY_FIRST_CYCLE:
+                *val = LSM6DS3TR_C_ONLY_FIRST_CYCLE;
+                break;
+
+            default:
+                *val = LSM6DS3TR_C_SH_WR_MODE_ND;
+                break;
+            }
+
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Decimation of read operation on Slave 1 starting from the
+  *         sensor hub trigger.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of slave1_rate in reg SLAVE1_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slave_1_dec_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave1_rate_t val) {
+    lsm6ds3tr_c_slave1_config_t slave1_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE1_CONFIG, (uint8_t*)&slave1_config, 1);
+
+        if(ret == 0) {
+            slave1_config.slave1_rate = (uint8_t)val;
+            ret =
+                lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLAVE1_CONFIG, (uint8_t*)&slave1_config, 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Decimation of read operation on Slave 1 starting from the
+  *         sensor hub trigger.[get]
+  *
+  * @param  ctx    Read / write interface definitions reg SLAVE1_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slave_1_dec_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave1_rate_t* val) {
+    lsm6ds3tr_c_slave1_config_t slave1_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE1_CONFIG, (uint8_t*)&slave1_config, 1);
+
+        if(ret == 0) {
+            switch(slave1_config.slave1_rate) {
+            case LSM6DS3TR_C_SL1_NO_DEC:
+                *val = LSM6DS3TR_C_SL1_NO_DEC;
+                break;
+
+            case LSM6DS3TR_C_SL1_DEC_2:
+                *val = LSM6DS3TR_C_SL1_DEC_2;
+                break;
+
+            case LSM6DS3TR_C_SL1_DEC_4:
+                *val = LSM6DS3TR_C_SL1_DEC_4;
+                break;
+
+            case LSM6DS3TR_C_SL1_DEC_8:
+                *val = LSM6DS3TR_C_SL1_DEC_8;
+                break;
+
+            default:
+                *val = LSM6DS3TR_C_SL1_DEC_ND;
+                break;
+            }
+
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Decimation of read operation on Slave 2 starting from the
+  *         sensor hub trigger.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of slave2_rate in reg SLAVE2_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slave_2_dec_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave2_rate_t val) {
+    lsm6ds3tr_c_slave2_config_t slave2_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE2_CONFIG, (uint8_t*)&slave2_config, 1);
+
+        if(ret == 0) {
+            slave2_config.slave2_rate = (uint8_t)val;
+            ret =
+                lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLAVE2_CONFIG, (uint8_t*)&slave2_config, 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Decimation of read operation on Slave 2 starting from the
+  *         sensor hub trigger.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of slave2_rate in reg SLAVE2_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slave_2_dec_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave2_rate_t* val) {
+    lsm6ds3tr_c_slave2_config_t slave2_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE2_CONFIG, (uint8_t*)&slave2_config, 1);
+
+        if(ret == 0) {
+            switch(slave2_config.slave2_rate) {
+            case LSM6DS3TR_C_SL2_NO_DEC:
+                *val = LSM6DS3TR_C_SL2_NO_DEC;
+                break;
+
+            case LSM6DS3TR_C_SL2_DEC_2:
+                *val = LSM6DS3TR_C_SL2_DEC_2;
+                break;
+
+            case LSM6DS3TR_C_SL2_DEC_4:
+                *val = LSM6DS3TR_C_SL2_DEC_4;
+                break;
+
+            case LSM6DS3TR_C_SL2_DEC_8:
+                *val = LSM6DS3TR_C_SL2_DEC_8;
+                break;
+
+            default:
+                *val = LSM6DS3TR_C_SL2_DEC_ND;
+                break;
+            }
+
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Decimation of read operation on Slave 3 starting from the
+  *         sensor hub trigger.[set]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Change the values of slave3_rate in reg SLAVE3_CONFIG
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slave_3_dec_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave3_rate_t val) {
+    lsm6ds3tr_c_slave3_config_t slave3_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE3_CONFIG, (uint8_t*)&slave3_config, 1);
+        slave3_config.slave3_rate = (uint8_t)val;
+
+        if(ret == 0) {
+            ret =
+                lsm6ds3tr_c_write_reg(ctx, LSM6DS3TR_C_SLAVE3_CONFIG, (uint8_t*)&slave3_config, 1);
+
+            if(ret == 0) {
+                ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+            }
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @brief  Decimation of read operation on Slave 3 starting from the
+  *         sensor hub trigger.[get]
+  *
+  * @param  ctx    Read / write interface definitions
+  * @param  val    Get the values of slave3_rate in reg SLAVE3_CONFIG.
+  * @retval        Interface status (MANDATORY: return 0 -> no Error).
+  *
+  */
+int32_t lsm6ds3tr_c_sh_slave_3_dec_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave3_rate_t* val) {
+    lsm6ds3tr_c_slave3_config_t slave3_config;
+    int32_t ret;
+
+    ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_BANK_A);
+
+    if(ret == 0) {
+        ret = lsm6ds3tr_c_read_reg(ctx, LSM6DS3TR_C_SLAVE3_CONFIG, (uint8_t*)&slave3_config, 1);
+
+        if(ret == 0) {
+            switch(slave3_config.slave3_rate) {
+            case LSM6DS3TR_C_SL3_NO_DEC:
+                *val = LSM6DS3TR_C_SL3_NO_DEC;
+                break;
+
+            case LSM6DS3TR_C_SL3_DEC_2:
+                *val = LSM6DS3TR_C_SL3_DEC_2;
+                break;
+
+            case LSM6DS3TR_C_SL3_DEC_4:
+                *val = LSM6DS3TR_C_SL3_DEC_4;
+                break;
+
+            case LSM6DS3TR_C_SL3_DEC_8:
+                *val = LSM6DS3TR_C_SL3_DEC_8;
+                break;
+
+            default:
+                *val = LSM6DS3TR_C_SL3_DEC_ND;
+                break;
+            }
+
+            ret = lsm6ds3tr_c_mem_bank_set(ctx, LSM6DS3TR_C_USER_BANK);
+        }
+    }
+
+    return ret;
+}
+
+/**
+  * @}
+  *
+  */
+
+/**
+  * @}
+  *
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

+ 2448 - 0
airmouse/tracking/imu/lsm6ds3tr_c_reg.h

@@ -0,0 +1,2448 @@
+/**
+  ******************************************************************************
+  * @file    lsm6ds3tr_c_reg.h
+  * @author  Sensors Software Solution Team
+  * @brief   This file contains all the functions prototypes for the
+  *          lsm6ds3tr_c_reg.c driver.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * This software component is licensed by ST under BSD 3-Clause license,
+  * the "License"; You may not use this file except in compliance with the
+  * License. You may obtain a copy of the License at:
+  *                        opensource.org/licenses/BSD-3-Clause
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef LSM6DS3TR_C_DRIVER_H
+#define LSM6DS3TR_C_DRIVER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include <stdint.h>
+#include <stddef.h>
+#include <math.h>
+
+/** @addtogroup LSM6DS3TR_C
+  * @{
+  *
+  */
+
+/** @defgroup  Endianness definitions
+  * @{
+  *
+  */
+
+#ifndef DRV_BYTE_ORDER
+#ifndef __BYTE_ORDER__
+
+#define DRV_LITTLE_ENDIAN 1234
+#define DRV_BIG_ENDIAN 4321
+
+/** if _BYTE_ORDER is not defined, choose the endianness of your architecture
+  * by uncommenting the define which fits your platform endianness
+  */
+//#define DRV_BYTE_ORDER    DRV_BIG_ENDIAN
+#define DRV_BYTE_ORDER DRV_LITTLE_ENDIAN
+
+#else /* defined __BYTE_ORDER__ */
+
+#define DRV_LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
+#define DRV_BIG_ENDIAN __ORDER_BIG_ENDIAN__
+#define DRV_BYTE_ORDER __BYTE_ORDER__
+
+#endif /* __BYTE_ORDER__*/
+#endif /* DRV_BYTE_ORDER */
+
+/**
+  * @}
+  *
+  */
+
+/** @defgroup STMicroelectronics sensors common types
+  * @{
+  *
+  */
+
+#ifndef MEMS_SHARED_TYPES
+#define MEMS_SHARED_TYPES
+
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} bitwise_t;
+
+#define PROPERTY_DISABLE (0U)
+#define PROPERTY_ENABLE (1U)
+
+/** @addtogroup  Interfaces_Functions
+  * @brief       This section provide a set of functions used to read and
+  *              write a generic register of the device.
+  *              MANDATORY: return 0 -> no Error.
+  * @{
+  *
+  */
+
+typedef int32_t (*stmdev_write_ptr)(void*, uint8_t, const uint8_t*, uint16_t);
+typedef int32_t (*stmdev_read_ptr)(void*, uint8_t, uint8_t*, uint16_t);
+typedef void (*stmdev_mdelay_ptr)(uint32_t millisec);
+
+typedef struct {
+    /** Component mandatory fields **/
+    stmdev_write_ptr write_reg;
+    stmdev_read_ptr read_reg;
+    /** Component optional fields **/
+    stmdev_mdelay_ptr mdelay;
+    /** Customizable optional pointer **/
+    void* handle;
+} stmdev_ctx_t;
+
+/**
+  * @}
+  *
+  */
+
+#endif /* MEMS_SHARED_TYPES */
+
+#ifndef MEMS_UCF_SHARED_TYPES
+#define MEMS_UCF_SHARED_TYPES
+
+/** @defgroup    Generic address-data structure definition
+  * @brief       This structure is useful to load a predefined configuration
+  *              of a sensor.
+  *              You can create a sensor configuration by your own or using
+  *              Unico / Unicleo tools available on STMicroelectronics
+  *              web site.
+  *
+  * @{
+  *
+  */
+
+typedef struct {
+    uint8_t address;
+    uint8_t data;
+} ucf_line_t;
+
+/**
+  * @}
+  *
+  */
+
+#endif /* MEMS_UCF_SHARED_TYPES */
+
+/**
+  * @}
+  *
+  */
+
+/** @defgroup LSM6DS3TR_C_Infos
+  * @{
+  *
+  */
+
+/** I2C Device Address 8 bit format  if SA0=0 -> D5 if SA0=1 -> D7 **/
+#define LSM6DS3TR_C_I2C_ADD_L 0xD5U
+#define LSM6DS3TR_C_I2C_ADD_H 0xD7U
+
+/** Device Identification (Who am I) **/
+#define LSM6DS3TR_C_ID 0x6AU
+
+/**
+  * @}
+  *
+  */
+
+#define LSM6DS3TR_C_FUNC_CFG_ACCESS 0x01U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t not_used_01 : 5;
+    uint8_t func_cfg_en : 3; /* func_cfg_en + func_cfg_en_b */
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t func_cfg_en : 3; /* func_cfg_en + func_cfg_en_b */
+    uint8_t not_used_01 : 5;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_func_cfg_access_t;
+
+#define LSM6DS3TR_C_SENSOR_SYNC_TIME_FRAME 0x04U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t tph : 4;
+    uint8_t not_used_01 : 4;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t not_used_01 : 4;
+    uint8_t tph : 4;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensor_sync_time_frame_t;
+
+#define LSM6DS3TR_C_SENSOR_SYNC_RES_RATIO 0x05U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t rr : 2;
+    uint8_t not_used_01 : 6;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t not_used_01 : 6;
+    uint8_t rr : 2;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensor_sync_res_ratio_t;
+
+#define LSM6DS3TR_C_FIFO_CTRL1 0x06U
+typedef struct {
+    uint8_t fth : 8; /* + FIFO_CTRL2(fth) */
+} lsm6ds3tr_c_fifo_ctrl1_t;
+
+#define LSM6DS3TR_C_FIFO_CTRL2 0x07U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t fth : 3; /* + FIFO_CTRL1(fth) */
+    uint8_t fifo_temp_en : 1;
+    uint8_t not_used_01 : 2;
+    uint8_t timer_pedo_fifo_drdy : 1;
+    uint8_t timer_pedo_fifo_en : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t timer_pedo_fifo_en : 1;
+    uint8_t timer_pedo_fifo_drdy : 1;
+    uint8_t not_used_01 : 2;
+    uint8_t fifo_temp_en : 1;
+    uint8_t fth : 3; /* + FIFO_CTRL1(fth) */
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_fifo_ctrl2_t;
+
+#define LSM6DS3TR_C_FIFO_CTRL3 0x08U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t dec_fifo_xl : 3;
+    uint8_t dec_fifo_gyro : 3;
+    uint8_t not_used_01 : 2;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t not_used_01 : 2;
+    uint8_t dec_fifo_gyro : 3;
+    uint8_t dec_fifo_xl : 3;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_fifo_ctrl3_t;
+
+#define LSM6DS3TR_C_FIFO_CTRL4 0x09U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t dec_ds3_fifo : 3;
+    uint8_t dec_ds4_fifo : 3;
+    uint8_t only_high_data : 1;
+    uint8_t stop_on_fth : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t stop_on_fth : 1;
+    uint8_t only_high_data : 1;
+    uint8_t dec_ds4_fifo : 3;
+    uint8_t dec_ds3_fifo : 3;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_fifo_ctrl4_t;
+
+#define LSM6DS3TR_C_FIFO_CTRL5 0x0AU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t fifo_mode : 3;
+    uint8_t odr_fifo : 4;
+    uint8_t not_used_01 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t not_used_01 : 1;
+    uint8_t odr_fifo : 4;
+    uint8_t fifo_mode : 3;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_fifo_ctrl5_t;
+
+#define LSM6DS3TR_C_DRDY_PULSE_CFG_G 0x0BU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t int2_wrist_tilt : 1;
+    uint8_t not_used_01 : 6;
+    uint8_t drdy_pulsed : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t drdy_pulsed : 1;
+    uint8_t not_used_01 : 6;
+    uint8_t int2_wrist_tilt : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_drdy_pulse_cfg_g_t;
+
+#define LSM6DS3TR_C_INT1_CTRL 0x0DU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t int1_drdy_xl : 1;
+    uint8_t int1_drdy_g : 1;
+    uint8_t int1_boot : 1;
+    uint8_t int1_fth : 1;
+    uint8_t int1_fifo_ovr : 1;
+    uint8_t int1_full_flag : 1;
+    uint8_t int1_sign_mot : 1;
+    uint8_t int1_step_detector : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t int1_step_detector : 1;
+    uint8_t int1_sign_mot : 1;
+    uint8_t int1_full_flag : 1;
+    uint8_t int1_fifo_ovr : 1;
+    uint8_t int1_fth : 1;
+    uint8_t int1_boot : 1;
+    uint8_t int1_drdy_g : 1;
+    uint8_t int1_drdy_xl : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_int1_ctrl_t;
+
+#define LSM6DS3TR_C_INT2_CTRL 0x0EU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t int2_drdy_xl : 1;
+    uint8_t int2_drdy_g : 1;
+    uint8_t int2_drdy_temp : 1;
+    uint8_t int2_fth : 1;
+    uint8_t int2_fifo_ovr : 1;
+    uint8_t int2_full_flag : 1;
+    uint8_t int2_step_count_ov : 1;
+    uint8_t int2_step_delta : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t int2_step_delta : 1;
+    uint8_t int2_step_count_ov : 1;
+    uint8_t int2_full_flag : 1;
+    uint8_t int2_fifo_ovr : 1;
+    uint8_t int2_fth : 1;
+    uint8_t int2_drdy_temp : 1;
+    uint8_t int2_drdy_g : 1;
+    uint8_t int2_drdy_xl : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_int2_ctrl_t;
+
+#define LSM6DS3TR_C_WHO_AM_I 0x0FU
+#define LSM6DS3TR_C_CTRL1_XL 0x10U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bw0_xl : 1;
+    uint8_t lpf1_bw_sel : 1;
+    uint8_t fs_xl : 2;
+    uint8_t odr_xl : 4;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t odr_xl : 4;
+    uint8_t fs_xl : 2;
+    uint8_t lpf1_bw_sel : 1;
+    uint8_t bw0_xl : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_ctrl1_xl_t;
+
+#define LSM6DS3TR_C_CTRL2_G 0x11U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t not_used_01 : 1;
+    uint8_t fs_g : 3; /* fs_g + fs_125 */
+    uint8_t odr_g : 4;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t odr_g : 4;
+    uint8_t fs_g : 3; /* fs_g + fs_125 */
+    uint8_t not_used_01 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_ctrl2_g_t;
+
+#define LSM6DS3TR_C_CTRL3_C 0x12U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t sw_reset : 1;
+    uint8_t ble : 1;
+    uint8_t if_inc : 1;
+    uint8_t sim : 1;
+    uint8_t pp_od : 1;
+    uint8_t h_lactive : 1;
+    uint8_t bdu : 1;
+    uint8_t boot : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t boot : 1;
+    uint8_t bdu : 1;
+    uint8_t h_lactive : 1;
+    uint8_t pp_od : 1;
+    uint8_t sim : 1;
+    uint8_t if_inc : 1;
+    uint8_t ble : 1;
+    uint8_t sw_reset : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_ctrl3_c_t;
+
+#define LSM6DS3TR_C_CTRL4_C 0x13U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t not_used_01 : 1;
+    uint8_t lpf1_sel_g : 1;
+    uint8_t i2c_disable : 1;
+    uint8_t drdy_mask : 1;
+    uint8_t den_drdy_int1 : 1;
+    uint8_t int2_on_int1 : 1;
+    uint8_t sleep : 1;
+    uint8_t den_xl_en : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t den_xl_en : 1;
+    uint8_t sleep : 1;
+    uint8_t int2_on_int1 : 1;
+    uint8_t den_drdy_int1 : 1;
+    uint8_t drdy_mask : 1;
+    uint8_t i2c_disable : 1;
+    uint8_t lpf1_sel_g : 1;
+    uint8_t not_used_01 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_ctrl4_c_t;
+
+#define LSM6DS3TR_C_CTRL5_C 0x14U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t st_xl : 2;
+    uint8_t st_g : 2;
+    uint8_t den_lh : 1;
+    uint8_t rounding : 3;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t rounding : 3;
+    uint8_t den_lh : 1;
+    uint8_t st_g : 2;
+    uint8_t st_xl : 2;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_ctrl5_c_t;
+
+#define LSM6DS3TR_C_CTRL6_C 0x15U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t ftype : 2;
+    uint8_t not_used_01 : 1;
+    uint8_t usr_off_w : 1;
+    uint8_t xl_hm_mode : 1;
+    uint8_t den_mode : 3; /* trig_en + lvl_en + lvl2_en */
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t den_mode : 3; /* trig_en + lvl_en + lvl2_en */
+    uint8_t xl_hm_mode : 1;
+    uint8_t usr_off_w : 1;
+    uint8_t not_used_01 : 1;
+    uint8_t ftype : 2;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_ctrl6_c_t;
+
+#define LSM6DS3TR_C_CTRL7_G 0x16U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t not_used_01 : 2;
+    uint8_t rounding_status : 1;
+    uint8_t not_used_02 : 1;
+    uint8_t hpm_g : 2;
+    uint8_t hp_en_g : 1;
+    uint8_t g_hm_mode : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t g_hm_mode : 1;
+    uint8_t hp_en_g : 1;
+    uint8_t hpm_g : 2;
+    uint8_t not_used_02 : 1;
+    uint8_t rounding_status : 1;
+    uint8_t not_used_01 : 2;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_ctrl7_g_t;
+
+#define LSM6DS3TR_C_CTRL8_XL 0x17U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t low_pass_on_6d : 1;
+    uint8_t not_used_01 : 1;
+    uint8_t hp_slope_xl_en : 1;
+    uint8_t input_composite : 1;
+    uint8_t hp_ref_mode : 1;
+    uint8_t hpcf_xl : 2;
+    uint8_t lpf2_xl_en : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t lpf2_xl_en : 1;
+    uint8_t hpcf_xl : 2;
+    uint8_t hp_ref_mode : 1;
+    uint8_t input_composite : 1;
+    uint8_t hp_slope_xl_en : 1;
+    uint8_t not_used_01 : 1;
+    uint8_t low_pass_on_6d : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_ctrl8_xl_t;
+
+#define LSM6DS3TR_C_CTRL9_XL 0x18U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t not_used_01 : 2;
+    uint8_t soft_en : 1;
+    uint8_t not_used_02 : 1;
+    uint8_t den_xl_g : 1;
+    uint8_t den_z : 1;
+    uint8_t den_y : 1;
+    uint8_t den_x : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t den_x : 1;
+    uint8_t den_y : 1;
+    uint8_t den_z : 1;
+    uint8_t den_xl_g : 1;
+    uint8_t not_used_02 : 1;
+    uint8_t soft_en : 1;
+    uint8_t not_used_01 : 2;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_ctrl9_xl_t;
+
+#define LSM6DS3TR_C_CTRL10_C 0x19U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t sign_motion_en : 1;
+    uint8_t pedo_rst_step : 1;
+    uint8_t func_en : 1;
+    uint8_t tilt_en : 1;
+    uint8_t pedo_en : 1;
+    uint8_t timer_en : 1;
+    uint8_t not_used_01 : 1;
+    uint8_t wrist_tilt_en : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t wrist_tilt_en : 1;
+    uint8_t not_used_01 : 1;
+    uint8_t timer_en : 1;
+    uint8_t pedo_en : 1;
+    uint8_t tilt_en : 1;
+    uint8_t func_en : 1;
+    uint8_t pedo_rst_step : 1;
+    uint8_t sign_motion_en : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_ctrl10_c_t;
+
+#define LSM6DS3TR_C_MASTER_CONFIG 0x1AU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t master_on : 1;
+    uint8_t iron_en : 1;
+    uint8_t pass_through_mode : 1;
+    uint8_t pull_up_en : 1;
+    uint8_t start_config : 1;
+    uint8_t not_used_01 : 1;
+    uint8_t data_valid_sel_fifo : 1;
+    uint8_t drdy_on_int1 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t drdy_on_int1 : 1;
+    uint8_t data_valid_sel_fifo : 1;
+    uint8_t not_used_01 : 1;
+    uint8_t start_config : 1;
+    uint8_t pull_up_en : 1;
+    uint8_t pass_through_mode : 1;
+    uint8_t iron_en : 1;
+    uint8_t master_on : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_master_config_t;
+
+#define LSM6DS3TR_C_WAKE_UP_SRC 0x1BU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t z_wu : 1;
+    uint8_t y_wu : 1;
+    uint8_t x_wu : 1;
+    uint8_t wu_ia : 1;
+    uint8_t sleep_state_ia : 1;
+    uint8_t ff_ia : 1;
+    uint8_t not_used_01 : 2;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t not_used_01 : 2;
+    uint8_t ff_ia : 1;
+    uint8_t sleep_state_ia : 1;
+    uint8_t wu_ia : 1;
+    uint8_t x_wu : 1;
+    uint8_t y_wu : 1;
+    uint8_t z_wu : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_wake_up_src_t;
+
+#define LSM6DS3TR_C_TAP_SRC 0x1CU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t z_tap : 1;
+    uint8_t y_tap : 1;
+    uint8_t x_tap : 1;
+    uint8_t tap_sign : 1;
+    uint8_t double_tap : 1;
+    uint8_t single_tap : 1;
+    uint8_t tap_ia : 1;
+    uint8_t not_used_01 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t not_used_01 : 1;
+    uint8_t tap_ia : 1;
+    uint8_t single_tap : 1;
+    uint8_t double_tap : 1;
+    uint8_t tap_sign : 1;
+    uint8_t x_tap : 1;
+    uint8_t y_tap : 1;
+    uint8_t z_tap : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_tap_src_t;
+
+#define LSM6DS3TR_C_D6D_SRC 0x1DU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t xl : 1;
+    uint8_t xh : 1;
+    uint8_t yl : 1;
+    uint8_t yh : 1;
+    uint8_t zl : 1;
+    uint8_t zh : 1;
+    uint8_t d6d_ia : 1;
+    uint8_t den_drdy : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t den_drdy : 1;
+    uint8_t d6d_ia : 1;
+    uint8_t zh : 1;
+    uint8_t zl : 1;
+    uint8_t yh : 1;
+    uint8_t yl : 1;
+    uint8_t xh : 1;
+    uint8_t xl : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_d6d_src_t;
+
+#define LSM6DS3TR_C_STATUS_REG 0x1EU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t xlda : 1;
+    uint8_t gda : 1;
+    uint8_t tda : 1;
+    uint8_t not_used_01 : 5;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t not_used_01 : 5;
+    uint8_t tda : 1;
+    uint8_t gda : 1;
+    uint8_t xlda : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_status_reg_t;
+
+#define LSM6DS3TR_C_OUT_TEMP_L 0x20U
+#define LSM6DS3TR_C_OUT_TEMP_H 0x21U
+#define LSM6DS3TR_C_OUTX_L_G 0x22U
+#define LSM6DS3TR_C_OUTX_H_G 0x23U
+#define LSM6DS3TR_C_OUTY_L_G 0x24U
+#define LSM6DS3TR_C_OUTY_H_G 0x25U
+#define LSM6DS3TR_C_OUTZ_L_G 0x26U
+#define LSM6DS3TR_C_OUTZ_H_G 0x27U
+#define LSM6DS3TR_C_OUTX_L_XL 0x28U
+#define LSM6DS3TR_C_OUTX_H_XL 0x29U
+#define LSM6DS3TR_C_OUTY_L_XL 0x2AU
+#define LSM6DS3TR_C_OUTY_H_XL 0x2BU
+#define LSM6DS3TR_C_OUTZ_L_XL 0x2CU
+#define LSM6DS3TR_C_OUTZ_H_XL 0x2DU
+#define LSM6DS3TR_C_SENSORHUB1_REG 0x2EU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub1_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB2_REG 0x2FU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub2_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB3_REG 0x30U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub3_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB4_REG 0x31U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub4_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB5_REG 0x32U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub5_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB6_REG 0x33U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub6_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB7_REG 0x34U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub7_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB8_REG 0x35U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub8_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB9_REG 0x36U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub9_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB10_REG 0x37U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub10_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB11_REG 0x38U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub11_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB12_REG 0x39U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub12_reg_t;
+
+#define LSM6DS3TR_C_FIFO_STATUS1 0x3AU
+typedef struct {
+    uint8_t diff_fifo : 8; /* + FIFO_STATUS2(diff_fifo) */
+} lsm6ds3tr_c_fifo_status1_t;
+
+#define LSM6DS3TR_C_FIFO_STATUS2 0x3BU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t diff_fifo : 3; /* + FIFO_STATUS1(diff_fifo) */
+    uint8_t not_used_01 : 1;
+    uint8_t fifo_empty : 1;
+    uint8_t fifo_full_smart : 1;
+    uint8_t over_run : 1;
+    uint8_t waterm : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t waterm : 1;
+    uint8_t over_run : 1;
+    uint8_t fifo_full_smart : 1;
+    uint8_t fifo_empty : 1;
+    uint8_t not_used_01 : 1;
+    uint8_t diff_fifo : 3; /* + FIFO_STATUS1(diff_fifo) */
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_fifo_status2_t;
+
+#define LSM6DS3TR_C_FIFO_STATUS3 0x3CU
+typedef struct {
+    uint8_t fifo_pattern : 8; /* + FIFO_STATUS4(fifo_pattern) */
+} lsm6ds3tr_c_fifo_status3_t;
+
+#define LSM6DS3TR_C_FIFO_STATUS4 0x3DU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t fifo_pattern : 2; /* + FIFO_STATUS3(fifo_pattern) */
+    uint8_t not_used_01 : 6;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t not_used_01 : 6;
+    uint8_t fifo_pattern : 2; /* + FIFO_STATUS3(fifo_pattern) */
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_fifo_status4_t;
+
+#define LSM6DS3TR_C_FIFO_DATA_OUT_L 0x3EU
+#define LSM6DS3TR_C_FIFO_DATA_OUT_H 0x3FU
+#define LSM6DS3TR_C_TIMESTAMP0_REG 0x40U
+#define LSM6DS3TR_C_TIMESTAMP1_REG 0x41U
+#define LSM6DS3TR_C_TIMESTAMP2_REG 0x42U
+#define LSM6DS3TR_C_STEP_TIMESTAMP_L 0x49U
+#define LSM6DS3TR_C_STEP_TIMESTAMP_H 0x4AU
+#define LSM6DS3TR_C_STEP_COUNTER_L 0x4BU
+#define LSM6DS3TR_C_STEP_COUNTER_H 0x4CU
+
+#define LSM6DS3TR_C_SENSORHUB13_REG 0x4DU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub13_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB14_REG 0x4EU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub14_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB15_REG 0x4FU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub15_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB16_REG 0x50U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub16_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB17_REG 0x51U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub17_reg_t;
+
+#define LSM6DS3TR_C_SENSORHUB18_REG 0x52U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t bit0 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit7 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t bit7 : 1;
+    uint8_t bit6 : 1;
+    uint8_t bit5 : 1;
+    uint8_t bit4 : 1;
+    uint8_t bit3 : 1;
+    uint8_t bit2 : 1;
+    uint8_t bit1 : 1;
+    uint8_t bit0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_sensorhub18_reg_t;
+
+#define LSM6DS3TR_C_FUNC_SRC1 0x53U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t sensorhub_end_op : 1;
+    uint8_t si_end_op : 1;
+    uint8_t hi_fail : 1;
+    uint8_t step_overflow : 1;
+    uint8_t step_detected : 1;
+    uint8_t tilt_ia : 1;
+    uint8_t sign_motion_ia : 1;
+    uint8_t step_count_delta_ia : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t step_count_delta_ia : 1;
+    uint8_t sign_motion_ia : 1;
+    uint8_t tilt_ia : 1;
+    uint8_t step_detected : 1;
+    uint8_t step_overflow : 1;
+    uint8_t hi_fail : 1;
+    uint8_t si_end_op : 1;
+    uint8_t sensorhub_end_op : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_func_src1_t;
+
+#define LSM6DS3TR_C_FUNC_SRC2 0x54U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t wrist_tilt_ia : 1;
+    uint8_t not_used_01 : 2;
+    uint8_t slave0_nack : 1;
+    uint8_t slave1_nack : 1;
+    uint8_t slave2_nack : 1;
+    uint8_t slave3_nack : 1;
+    uint8_t not_used_02 : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t not_used_02 : 1;
+    uint8_t slave3_nack : 1;
+    uint8_t slave2_nack : 1;
+    uint8_t slave1_nack : 1;
+    uint8_t slave0_nack : 1;
+    uint8_t not_used_01 : 2;
+    uint8_t wrist_tilt_ia : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_func_src2_t;
+
+#define LSM6DS3TR_C_WRIST_TILT_IA 0x55U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t not_used_01 : 2;
+    uint8_t wrist_tilt_ia_zneg : 1;
+    uint8_t wrist_tilt_ia_zpos : 1;
+    uint8_t wrist_tilt_ia_yneg : 1;
+    uint8_t wrist_tilt_ia_ypos : 1;
+    uint8_t wrist_tilt_ia_xneg : 1;
+    uint8_t wrist_tilt_ia_xpos : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t wrist_tilt_ia_xpos : 1;
+    uint8_t wrist_tilt_ia_xneg : 1;
+    uint8_t wrist_tilt_ia_ypos : 1;
+    uint8_t wrist_tilt_ia_yneg : 1;
+    uint8_t wrist_tilt_ia_zpos : 1;
+    uint8_t wrist_tilt_ia_zneg : 1;
+    uint8_t not_used_01 : 2;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_wrist_tilt_ia_t;
+
+#define LSM6DS3TR_C_TAP_CFG 0x58U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t lir : 1;
+    uint8_t tap_z_en : 1;
+    uint8_t tap_y_en : 1;
+    uint8_t tap_x_en : 1;
+    uint8_t slope_fds : 1;
+    uint8_t inact_en : 2;
+    uint8_t interrupts_enable : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t interrupts_enable : 1;
+    uint8_t inact_en : 2;
+    uint8_t slope_fds : 1;
+    uint8_t tap_x_en : 1;
+    uint8_t tap_y_en : 1;
+    uint8_t tap_z_en : 1;
+    uint8_t lir : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_tap_cfg_t;
+
+#define LSM6DS3TR_C_TAP_THS_6D 0x59U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t tap_ths : 5;
+    uint8_t sixd_ths : 2;
+    uint8_t d4d_en : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t d4d_en : 1;
+    uint8_t sixd_ths : 2;
+    uint8_t tap_ths : 5;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_tap_ths_6d_t;
+
+#define LSM6DS3TR_C_INT_DUR2 0x5AU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t shock : 2;
+    uint8_t quiet : 2;
+    uint8_t dur : 4;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t dur : 4;
+    uint8_t quiet : 2;
+    uint8_t shock : 2;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_int_dur2_t;
+
+#define LSM6DS3TR_C_WAKE_UP_THS 0x5BU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t wk_ths : 6;
+    uint8_t not_used_01 : 1;
+    uint8_t single_double_tap : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t single_double_tap : 1;
+    uint8_t not_used_01 : 1;
+    uint8_t wk_ths : 6;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_wake_up_ths_t;
+
+#define LSM6DS3TR_C_WAKE_UP_DUR 0x5CU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t sleep_dur : 4;
+    uint8_t timer_hr : 1;
+    uint8_t wake_dur : 2;
+    uint8_t ff_dur : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t ff_dur : 1;
+    uint8_t wake_dur : 2;
+    uint8_t timer_hr : 1;
+    uint8_t sleep_dur : 4;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_wake_up_dur_t;
+
+#define LSM6DS3TR_C_FREE_FALL 0x5DU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t ff_ths : 3;
+    uint8_t ff_dur : 5;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t ff_dur : 5;
+    uint8_t ff_ths : 3;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_free_fall_t;
+
+#define LSM6DS3TR_C_MD1_CFG 0x5EU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t int1_timer : 1;
+    uint8_t int1_tilt : 1;
+    uint8_t int1_6d : 1;
+    uint8_t int1_double_tap : 1;
+    uint8_t int1_ff : 1;
+    uint8_t int1_wu : 1;
+    uint8_t int1_single_tap : 1;
+    uint8_t int1_inact_state : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t int1_inact_state : 1;
+    uint8_t int1_single_tap : 1;
+    uint8_t int1_wu : 1;
+    uint8_t int1_ff : 1;
+    uint8_t int1_double_tap : 1;
+    uint8_t int1_6d : 1;
+    uint8_t int1_tilt : 1;
+    uint8_t int1_timer : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_md1_cfg_t;
+
+#define LSM6DS3TR_C_MD2_CFG 0x5FU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t int2_iron : 1;
+    uint8_t int2_tilt : 1;
+    uint8_t int2_6d : 1;
+    uint8_t int2_double_tap : 1;
+    uint8_t int2_ff : 1;
+    uint8_t int2_wu : 1;
+    uint8_t int2_single_tap : 1;
+    uint8_t int2_inact_state : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t int2_inact_state : 1;
+    uint8_t int2_single_tap : 1;
+    uint8_t int2_wu : 1;
+    uint8_t int2_ff : 1;
+    uint8_t int2_double_tap : 1;
+    uint8_t int2_6d : 1;
+    uint8_t int2_tilt : 1;
+    uint8_t int2_iron : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_md2_cfg_t;
+
+#define LSM6DS3TR_C_MASTER_CMD_CODE 0x60U
+typedef struct {
+    uint8_t master_cmd_code : 8;
+} lsm6ds3tr_c_master_cmd_code_t;
+
+#define LSM6DS3TR_C_SENS_SYNC_SPI_ERROR_CODE 0x61U
+typedef struct {
+    uint8_t error_code : 8;
+} lsm6ds3tr_c_sens_sync_spi_error_code_t;
+
+#define LSM6DS3TR_C_OUT_MAG_RAW_X_L 0x66U
+#define LSM6DS3TR_C_OUT_MAG_RAW_X_H 0x67U
+#define LSM6DS3TR_C_OUT_MAG_RAW_Y_L 0x68U
+#define LSM6DS3TR_C_OUT_MAG_RAW_Y_H 0x69U
+#define LSM6DS3TR_C_OUT_MAG_RAW_Z_L 0x6AU
+#define LSM6DS3TR_C_OUT_MAG_RAW_Z_H 0x6BU
+#define LSM6DS3TR_C_X_OFS_USR 0x73U
+#define LSM6DS3TR_C_Y_OFS_USR 0x74U
+#define LSM6DS3TR_C_Z_OFS_USR 0x75U
+#define LSM6DS3TR_C_SLV0_ADD 0x02U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t rw_0 : 1;
+    uint8_t slave0_add : 7;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t slave0_add : 7;
+    uint8_t rw_0 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_slv0_add_t;
+
+#define LSM6DS3TR_C_SLV0_SUBADD 0x03U
+typedef struct {
+    uint8_t slave0_reg : 8;
+} lsm6ds3tr_c_slv0_subadd_t;
+
+#define LSM6DS3TR_C_SLAVE0_CONFIG 0x04U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t slave0_numop : 3;
+    uint8_t src_mode : 1;
+    uint8_t aux_sens_on : 2;
+    uint8_t slave0_rate : 2;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t slave0_rate : 2;
+    uint8_t aux_sens_on : 2;
+    uint8_t src_mode : 1;
+    uint8_t slave0_numop : 3;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_slave0_config_t;
+
+#define LSM6DS3TR_C_SLV1_ADD 0x05U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t r_1 : 1;
+    uint8_t slave1_add : 7;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t slave1_add : 7;
+    uint8_t r_1 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_slv1_add_t;
+
+#define LSM6DS3TR_C_SLV1_SUBADD 0x06U
+typedef struct {
+    uint8_t slave1_reg : 8;
+} lsm6ds3tr_c_slv1_subadd_t;
+
+#define LSM6DS3TR_C_SLAVE1_CONFIG 0x07U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t slave1_numop : 3;
+    uint8_t not_used_01 : 2;
+    uint8_t write_once : 1;
+    uint8_t slave1_rate : 2;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t slave1_rate : 2;
+    uint8_t write_once : 1;
+    uint8_t not_used_01 : 2;
+    uint8_t slave1_numop : 3;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_slave1_config_t;
+
+#define LSM6DS3TR_C_SLV2_ADD 0x08U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t r_2 : 1;
+    uint8_t slave2_add : 7;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t slave2_add : 7;
+    uint8_t r_2 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_slv2_add_t;
+
+#define LSM6DS3TR_C_SLV2_SUBADD 0x09U
+typedef struct {
+    uint8_t slave2_reg : 8;
+} lsm6ds3tr_c_slv2_subadd_t;
+
+#define LSM6DS3TR_C_SLAVE2_CONFIG 0x0AU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t slave2_numop : 3;
+    uint8_t not_used_01 : 3;
+    uint8_t slave2_rate : 2;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t slave2_rate : 2;
+    uint8_t not_used_01 : 3;
+    uint8_t slave2_numop : 3;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_slave2_config_t;
+
+#define LSM6DS3TR_C_SLV3_ADD 0x0BU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t r_3 : 1;
+    uint8_t slave3_add : 7;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t slave3_add : 7;
+    uint8_t r_3 : 1;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_slv3_add_t;
+
+#define LSM6DS3TR_C_SLV3_SUBADD 0x0CU
+typedef struct {
+    uint8_t slave3_reg : 8;
+} lsm6ds3tr_c_slv3_subadd_t;
+
+#define LSM6DS3TR_C_SLAVE3_CONFIG 0x0DU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t slave3_numop : 3;
+    uint8_t not_used_01 : 3;
+    uint8_t slave3_rate : 2;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t slave3_rate : 2;
+    uint8_t not_used_01 : 3;
+    uint8_t slave3_numop : 3;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_slave3_config_t;
+
+#define LSM6DS3TR_C_DATAWRITE_SRC_MODE_SUB_SLV0 0x0EU
+typedef struct {
+    uint8_t slave_dataw : 8;
+} lsm6ds3tr_c_datawrite_src_mode_sub_slv0_t;
+
+#define LSM6DS3TR_C_CONFIG_PEDO_THS_MIN 0x0FU
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t ths_min : 5;
+    uint8_t not_used_01 : 2;
+    uint8_t pedo_fs : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t pedo_fs : 1;
+    uint8_t not_used_01 : 2;
+    uint8_t ths_min : 5;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_config_pedo_ths_min_t;
+
+#define LSM6DS3TR_C_SM_THS 0x13U
+#define LSM6DS3TR_C_PEDO_DEB_REG 0x14U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t deb_step : 3;
+    uint8_t deb_time : 5;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t deb_time : 5;
+    uint8_t deb_step : 3;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_pedo_deb_reg_t;
+
+#define LSM6DS3TR_C_STEP_COUNT_DELTA 0x15U
+#define LSM6DS3TR_C_MAG_SI_XX 0x24U
+#define LSM6DS3TR_C_MAG_SI_XY 0x25U
+#define LSM6DS3TR_C_MAG_SI_XZ 0x26U
+#define LSM6DS3TR_C_MAG_SI_YX 0x27U
+#define LSM6DS3TR_C_MAG_SI_YY 0x28U
+#define LSM6DS3TR_C_MAG_SI_YZ 0x29U
+#define LSM6DS3TR_C_MAG_SI_ZX 0x2AU
+#define LSM6DS3TR_C_MAG_SI_ZY 0x2BU
+#define LSM6DS3TR_C_MAG_SI_ZZ 0x2CU
+#define LSM6DS3TR_C_MAG_OFFX_L 0x2DU
+#define LSM6DS3TR_C_MAG_OFFX_H 0x2EU
+#define LSM6DS3TR_C_MAG_OFFY_L 0x2FU
+#define LSM6DS3TR_C_MAG_OFFY_H 0x30U
+#define LSM6DS3TR_C_MAG_OFFZ_L 0x31U
+#define LSM6DS3TR_C_MAG_OFFZ_H 0x32U
+#define LSM6DS3TR_C_A_WRIST_TILT_LAT 0x50U
+#define LSM6DS3TR_C_A_WRIST_TILT_THS 0x54U
+#define LSM6DS3TR_C_A_WRIST_TILT_MASK 0x59U
+typedef struct {
+#if DRV_BYTE_ORDER == DRV_LITTLE_ENDIAN
+    uint8_t not_used_01 : 2;
+    uint8_t wrist_tilt_mask_zneg : 1;
+    uint8_t wrist_tilt_mask_zpos : 1;
+    uint8_t wrist_tilt_mask_yneg : 1;
+    uint8_t wrist_tilt_mask_ypos : 1;
+    uint8_t wrist_tilt_mask_xneg : 1;
+    uint8_t wrist_tilt_mask_xpos : 1;
+#elif DRV_BYTE_ORDER == DRV_BIG_ENDIAN
+    uint8_t wrist_tilt_mask_xpos : 1;
+    uint8_t wrist_tilt_mask_xneg : 1;
+    uint8_t wrist_tilt_mask_ypos : 1;
+    uint8_t wrist_tilt_mask_yneg : 1;
+    uint8_t wrist_tilt_mask_zpos : 1;
+    uint8_t wrist_tilt_mask_zneg : 1;
+    uint8_t not_used_01 : 2;
+#endif /* DRV_BYTE_ORDER */
+} lsm6ds3tr_c_a_wrist_tilt_mask_t;
+
+/**
+  * @defgroup LSM6DS3TR_C_Register_Union
+  * @brief    This union group all the registers having a bit-field
+  *           description.
+  *           This union is useful but it's not needed by the driver.
+  *
+  *           REMOVING this union you are compliant with:
+  *           MISRA-C 2012 [Rule 19.2] -> " Union are not allowed "
+  *
+  * @{
+  *
+  */
+typedef union {
+    lsm6ds3tr_c_func_cfg_access_t func_cfg_access;
+    lsm6ds3tr_c_sensor_sync_time_frame_t sensor_sync_time_frame;
+    lsm6ds3tr_c_sensor_sync_res_ratio_t sensor_sync_res_ratio;
+    lsm6ds3tr_c_fifo_ctrl1_t fifo_ctrl1;
+    lsm6ds3tr_c_fifo_ctrl2_t fifo_ctrl2;
+    lsm6ds3tr_c_fifo_ctrl3_t fifo_ctrl3;
+    lsm6ds3tr_c_fifo_ctrl4_t fifo_ctrl4;
+    lsm6ds3tr_c_fifo_ctrl5_t fifo_ctrl5;
+    lsm6ds3tr_c_drdy_pulse_cfg_g_t drdy_pulse_cfg_g;
+    lsm6ds3tr_c_int1_ctrl_t int1_ctrl;
+    lsm6ds3tr_c_int2_ctrl_t int2_ctrl;
+    lsm6ds3tr_c_ctrl1_xl_t ctrl1_xl;
+    lsm6ds3tr_c_ctrl2_g_t ctrl2_g;
+    lsm6ds3tr_c_ctrl3_c_t ctrl3_c;
+    lsm6ds3tr_c_ctrl4_c_t ctrl4_c;
+    lsm6ds3tr_c_ctrl5_c_t ctrl5_c;
+    lsm6ds3tr_c_ctrl6_c_t ctrl6_c;
+    lsm6ds3tr_c_ctrl7_g_t ctrl7_g;
+    lsm6ds3tr_c_ctrl8_xl_t ctrl8_xl;
+    lsm6ds3tr_c_ctrl9_xl_t ctrl9_xl;
+    lsm6ds3tr_c_ctrl10_c_t ctrl10_c;
+    lsm6ds3tr_c_master_config_t master_config;
+    lsm6ds3tr_c_wake_up_src_t wake_up_src;
+    lsm6ds3tr_c_tap_src_t tap_src;
+    lsm6ds3tr_c_d6d_src_t d6d_src;
+    lsm6ds3tr_c_status_reg_t status_reg;
+    lsm6ds3tr_c_sensorhub1_reg_t sensorhub1_reg;
+    lsm6ds3tr_c_sensorhub2_reg_t sensorhub2_reg;
+    lsm6ds3tr_c_sensorhub3_reg_t sensorhub3_reg;
+    lsm6ds3tr_c_sensorhub4_reg_t sensorhub4_reg;
+    lsm6ds3tr_c_sensorhub5_reg_t sensorhub5_reg;
+    lsm6ds3tr_c_sensorhub6_reg_t sensorhub6_reg;
+    lsm6ds3tr_c_sensorhub7_reg_t sensorhub7_reg;
+    lsm6ds3tr_c_sensorhub8_reg_t sensorhub8_reg;
+    lsm6ds3tr_c_sensorhub9_reg_t sensorhub9_reg;
+    lsm6ds3tr_c_sensorhub10_reg_t sensorhub10_reg;
+    lsm6ds3tr_c_sensorhub11_reg_t sensorhub11_reg;
+    lsm6ds3tr_c_sensorhub12_reg_t sensorhub12_reg;
+    lsm6ds3tr_c_fifo_status1_t fifo_status1;
+    lsm6ds3tr_c_fifo_status2_t fifo_status2;
+    lsm6ds3tr_c_fifo_status3_t fifo_status3;
+    lsm6ds3tr_c_fifo_status4_t fifo_status4;
+    lsm6ds3tr_c_sensorhub13_reg_t sensorhub13_reg;
+    lsm6ds3tr_c_sensorhub14_reg_t sensorhub14_reg;
+    lsm6ds3tr_c_sensorhub15_reg_t sensorhub15_reg;
+    lsm6ds3tr_c_sensorhub16_reg_t sensorhub16_reg;
+    lsm6ds3tr_c_sensorhub17_reg_t sensorhub17_reg;
+    lsm6ds3tr_c_sensorhub18_reg_t sensorhub18_reg;
+    lsm6ds3tr_c_func_src1_t func_src1;
+    lsm6ds3tr_c_func_src2_t func_src2;
+    lsm6ds3tr_c_wrist_tilt_ia_t wrist_tilt_ia;
+    lsm6ds3tr_c_tap_cfg_t tap_cfg;
+    lsm6ds3tr_c_tap_ths_6d_t tap_ths_6d;
+    lsm6ds3tr_c_int_dur2_t int_dur2;
+    lsm6ds3tr_c_wake_up_ths_t wake_up_ths;
+    lsm6ds3tr_c_wake_up_dur_t wake_up_dur;
+    lsm6ds3tr_c_free_fall_t free_fall;
+    lsm6ds3tr_c_md1_cfg_t md1_cfg;
+    lsm6ds3tr_c_md2_cfg_t md2_cfg;
+    lsm6ds3tr_c_master_cmd_code_t master_cmd_code;
+    lsm6ds3tr_c_sens_sync_spi_error_code_t sens_sync_spi_error_code;
+    lsm6ds3tr_c_slv0_add_t slv0_add;
+    lsm6ds3tr_c_slv0_subadd_t slv0_subadd;
+    lsm6ds3tr_c_slave0_config_t slave0_config;
+    lsm6ds3tr_c_slv1_add_t slv1_add;
+    lsm6ds3tr_c_slv1_subadd_t slv1_subadd;
+    lsm6ds3tr_c_slave1_config_t slave1_config;
+    lsm6ds3tr_c_slv2_add_t slv2_add;
+    lsm6ds3tr_c_slv2_subadd_t slv2_subadd;
+    lsm6ds3tr_c_slave2_config_t slave2_config;
+    lsm6ds3tr_c_slv3_add_t slv3_add;
+    lsm6ds3tr_c_slv3_subadd_t slv3_subadd;
+    lsm6ds3tr_c_slave3_config_t slave3_config;
+    lsm6ds3tr_c_datawrite_src_mode_sub_slv0_t datawrite_src_mode_sub_slv0;
+    lsm6ds3tr_c_config_pedo_ths_min_t config_pedo_ths_min;
+    lsm6ds3tr_c_pedo_deb_reg_t pedo_deb_reg;
+    lsm6ds3tr_c_a_wrist_tilt_mask_t a_wrist_tilt_mask;
+    bitwise_t bitwise;
+    uint8_t byte;
+} lsm6ds3tr_c_reg_t;
+
+/**
+  * @}
+  *
+  */
+
+int32_t lsm6ds3tr_c_read_reg(stmdev_ctx_t* ctx, uint8_t reg, uint8_t* data, uint16_t len);
+int32_t lsm6ds3tr_c_write_reg(stmdev_ctx_t* ctx, uint8_t reg, uint8_t* data, uint16_t len);
+
+float_t lsm6ds3tr_c_from_fs2g_to_mg(int16_t lsb);
+float_t lsm6ds3tr_c_from_fs4g_to_mg(int16_t lsb);
+float_t lsm6ds3tr_c_from_fs8g_to_mg(int16_t lsb);
+float_t lsm6ds3tr_c_from_fs16g_to_mg(int16_t lsb);
+
+float_t lsm6ds3tr_c_from_fs125dps_to_mdps(int16_t lsb);
+float_t lsm6ds3tr_c_from_fs250dps_to_mdps(int16_t lsb);
+float_t lsm6ds3tr_c_from_fs500dps_to_mdps(int16_t lsb);
+float_t lsm6ds3tr_c_from_fs1000dps_to_mdps(int16_t lsb);
+float_t lsm6ds3tr_c_from_fs2000dps_to_mdps(int16_t lsb);
+
+float_t lsm6ds3tr_c_from_lsb_to_celsius(int16_t lsb);
+
+typedef enum {
+    LSM6DS3TR_C_2g = 0,
+    LSM6DS3TR_C_16g = 1,
+    LSM6DS3TR_C_4g = 2,
+    LSM6DS3TR_C_8g = 3,
+    LSM6DS3TR_C_XL_FS_ND = 4, /* ERROR CODE */
+} lsm6ds3tr_c_fs_xl_t;
+int32_t lsm6ds3tr_c_xl_full_scale_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_fs_xl_t val);
+int32_t lsm6ds3tr_c_xl_full_scale_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_fs_xl_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_XL_ODR_OFF = 0,
+    LSM6DS3TR_C_XL_ODR_12Hz5 = 1,
+    LSM6DS3TR_C_XL_ODR_26Hz = 2,
+    LSM6DS3TR_C_XL_ODR_52Hz = 3,
+    LSM6DS3TR_C_XL_ODR_104Hz = 4,
+    LSM6DS3TR_C_XL_ODR_208Hz = 5,
+    LSM6DS3TR_C_XL_ODR_416Hz = 6,
+    LSM6DS3TR_C_XL_ODR_833Hz = 7,
+    LSM6DS3TR_C_XL_ODR_1k66Hz = 8,
+    LSM6DS3TR_C_XL_ODR_3k33Hz = 9,
+    LSM6DS3TR_C_XL_ODR_6k66Hz = 10,
+    LSM6DS3TR_C_XL_ODR_1Hz6 = 11,
+    LSM6DS3TR_C_XL_ODR_ND = 12, /* ERROR CODE */
+} lsm6ds3tr_c_odr_xl_t;
+int32_t lsm6ds3tr_c_xl_data_rate_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_xl_t val);
+int32_t lsm6ds3tr_c_xl_data_rate_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_xl_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_250dps = 0,
+    LSM6DS3TR_C_125dps = 1,
+    LSM6DS3TR_C_500dps = 2,
+    LSM6DS3TR_C_1000dps = 4,
+    LSM6DS3TR_C_2000dps = 6,
+    LSM6DS3TR_C_GY_FS_ND = 7, /* ERROR CODE */
+} lsm6ds3tr_c_fs_g_t;
+int32_t lsm6ds3tr_c_gy_full_scale_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_fs_g_t val);
+int32_t lsm6ds3tr_c_gy_full_scale_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_fs_g_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_GY_ODR_OFF = 0,
+    LSM6DS3TR_C_GY_ODR_12Hz5 = 1,
+    LSM6DS3TR_C_GY_ODR_26Hz = 2,
+    LSM6DS3TR_C_GY_ODR_52Hz = 3,
+    LSM6DS3TR_C_GY_ODR_104Hz = 4,
+    LSM6DS3TR_C_GY_ODR_208Hz = 5,
+    LSM6DS3TR_C_GY_ODR_416Hz = 6,
+    LSM6DS3TR_C_GY_ODR_833Hz = 7,
+    LSM6DS3TR_C_GY_ODR_1k66Hz = 8,
+    LSM6DS3TR_C_GY_ODR_3k33Hz = 9,
+    LSM6DS3TR_C_GY_ODR_6k66Hz = 10,
+    LSM6DS3TR_C_GY_ODR_ND = 11, /* ERROR CODE */
+} lsm6ds3tr_c_odr_g_t;
+int32_t lsm6ds3tr_c_gy_data_rate_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_g_t val);
+int32_t lsm6ds3tr_c_gy_data_rate_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_g_t* val);
+
+int32_t lsm6ds3tr_c_block_data_update_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_block_data_update_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_LSb_1mg = 0,
+    LSM6DS3TR_C_LSb_16mg = 1,
+    LSM6DS3TR_C_WEIGHT_ND = 2,
+} lsm6ds3tr_c_usr_off_w_t;
+int32_t lsm6ds3tr_c_xl_offset_weight_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_usr_off_w_t val);
+int32_t lsm6ds3tr_c_xl_offset_weight_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_usr_off_w_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_XL_HIGH_PERFORMANCE = 0,
+    LSM6DS3TR_C_XL_NORMAL = 1,
+    LSM6DS3TR_C_XL_PW_MODE_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_xl_hm_mode_t;
+int32_t lsm6ds3tr_c_xl_power_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_xl_hm_mode_t val);
+int32_t lsm6ds3tr_c_xl_power_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_xl_hm_mode_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_STAT_RND_DISABLE = 0,
+    LSM6DS3TR_C_STAT_RND_ENABLE = 1,
+    LSM6DS3TR_C_STAT_RND_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_rounding_status_t;
+int32_t lsm6ds3tr_c_rounding_on_status_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_rounding_status_t val);
+int32_t lsm6ds3tr_c_rounding_on_status_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_rounding_status_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_GY_HIGH_PERFORMANCE = 0,
+    LSM6DS3TR_C_GY_NORMAL = 1,
+    LSM6DS3TR_C_GY_PW_MODE_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_g_hm_mode_t;
+int32_t lsm6ds3tr_c_gy_power_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_g_hm_mode_t val);
+int32_t lsm6ds3tr_c_gy_power_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_g_hm_mode_t* val);
+
+typedef struct {
+    lsm6ds3tr_c_wake_up_src_t wake_up_src;
+    lsm6ds3tr_c_tap_src_t tap_src;
+    lsm6ds3tr_c_d6d_src_t d6d_src;
+    lsm6ds3tr_c_status_reg_t status_reg;
+    lsm6ds3tr_c_func_src1_t func_src1;
+    lsm6ds3tr_c_func_src2_t func_src2;
+    lsm6ds3tr_c_wrist_tilt_ia_t wrist_tilt_ia;
+    lsm6ds3tr_c_a_wrist_tilt_mask_t a_wrist_tilt_mask;
+} lsm6ds3tr_c_all_sources_t;
+int32_t lsm6ds3tr_c_all_sources_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_all_sources_t* val);
+
+int32_t lsm6ds3tr_c_status_reg_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_status_reg_t* val);
+
+int32_t lsm6ds3tr_c_xl_flag_data_ready_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_gy_flag_data_ready_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_temp_flag_data_ready_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_xl_usr_offset_set(stmdev_ctx_t* ctx, uint8_t* buff);
+int32_t lsm6ds3tr_c_xl_usr_offset_get(stmdev_ctx_t* ctx, uint8_t* buff);
+int32_t lsm6ds3tr_c_timestamp_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_timestamp_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_LSB_6ms4 = 0,
+    LSM6DS3TR_C_LSB_25us = 1,
+    LSM6DS3TR_C_TS_RES_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_timer_hr_t;
+int32_t lsm6ds3tr_c_timestamp_res_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_timer_hr_t val);
+int32_t lsm6ds3tr_c_timestamp_res_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_timer_hr_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_ROUND_DISABLE = 0,
+    LSM6DS3TR_C_ROUND_XL = 1,
+    LSM6DS3TR_C_ROUND_GY = 2,
+    LSM6DS3TR_C_ROUND_GY_XL = 3,
+    LSM6DS3TR_C_ROUND_SH1_TO_SH6 = 4,
+    LSM6DS3TR_C_ROUND_XL_SH1_TO_SH6 = 5,
+    LSM6DS3TR_C_ROUND_GY_XL_SH1_TO_SH12 = 6,
+    LSM6DS3TR_C_ROUND_GY_XL_SH1_TO_SH6 = 7,
+    LSM6DS3TR_C_ROUND_OUT_ND = 8, /* ERROR CODE */
+} lsm6ds3tr_c_rounding_t;
+int32_t lsm6ds3tr_c_rounding_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_rounding_t val);
+int32_t lsm6ds3tr_c_rounding_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_rounding_t* val);
+
+int32_t lsm6ds3tr_c_temperature_raw_get(stmdev_ctx_t* ctx, int16_t* val);
+int32_t lsm6ds3tr_c_angular_rate_raw_get(stmdev_ctx_t* ctx, int16_t* val);
+int32_t lsm6ds3tr_c_acceleration_raw_get(stmdev_ctx_t* ctx, int16_t* val);
+
+int32_t lsm6ds3tr_c_mag_calibrated_raw_get(stmdev_ctx_t* ctx, int16_t* val);
+
+int32_t lsm6ds3tr_c_fifo_raw_data_get(stmdev_ctx_t* ctx, uint8_t* buffer, uint8_t len);
+
+typedef enum {
+    LSM6DS3TR_C_USER_BANK = 0,
+    LSM6DS3TR_C_BANK_A = 4,
+    LSM6DS3TR_C_BANK_B = 5,
+    LSM6DS3TR_C_BANK_ND = 6, /* ERROR CODE */
+} lsm6ds3tr_c_func_cfg_en_t;
+int32_t lsm6ds3tr_c_mem_bank_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_func_cfg_en_t val);
+int32_t lsm6ds3tr_c_mem_bank_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_func_cfg_en_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_DRDY_LATCHED = 0,
+    LSM6DS3TR_C_DRDY_PULSED = 1,
+    LSM6DS3TR_C_DRDY_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_drdy_pulsed_g_t;
+int32_t lsm6ds3tr_c_data_ready_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_drdy_pulsed_g_t val);
+int32_t lsm6ds3tr_c_data_ready_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_drdy_pulsed_g_t* val);
+
+int32_t lsm6ds3tr_c_device_id_get(stmdev_ctx_t* ctx, uint8_t* buff);
+int32_t lsm6ds3tr_c_reset_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_reset_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_LSB_AT_LOW_ADD = 0,
+    LSM6DS3TR_C_MSB_AT_LOW_ADD = 1,
+    LSM6DS3TR_C_DATA_FMT_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_ble_t;
+int32_t lsm6ds3tr_c_data_format_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_ble_t val);
+int32_t lsm6ds3tr_c_data_format_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_ble_t* val);
+
+int32_t lsm6ds3tr_c_auto_increment_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_auto_increment_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_boot_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_boot_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_XL_ST_DISABLE = 0,
+    LSM6DS3TR_C_XL_ST_POSITIVE = 1,
+    LSM6DS3TR_C_XL_ST_NEGATIVE = 2,
+    LSM6DS3TR_C_XL_ST_ND = 3, /* ERROR CODE */
+} lsm6ds3tr_c_st_xl_t;
+int32_t lsm6ds3tr_c_xl_self_test_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_st_xl_t val);
+int32_t lsm6ds3tr_c_xl_self_test_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_st_xl_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_GY_ST_DISABLE = 0,
+    LSM6DS3TR_C_GY_ST_POSITIVE = 1,
+    LSM6DS3TR_C_GY_ST_NEGATIVE = 3,
+    LSM6DS3TR_C_GY_ST_ND = 4, /* ERROR CODE */
+} lsm6ds3tr_c_st_g_t;
+int32_t lsm6ds3tr_c_gy_self_test_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_st_g_t val);
+int32_t lsm6ds3tr_c_gy_self_test_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_st_g_t* val);
+
+int32_t lsm6ds3tr_c_filter_settling_mask_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_filter_settling_mask_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_USE_SLOPE = 0,
+    LSM6DS3TR_C_USE_HPF = 1,
+    LSM6DS3TR_C_HP_PATH_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_slope_fds_t;
+int32_t lsm6ds3tr_c_xl_hp_path_internal_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_slope_fds_t val);
+int32_t lsm6ds3tr_c_xl_hp_path_internal_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_slope_fds_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_XL_ANA_BW_1k5Hz = 0,
+    LSM6DS3TR_C_XL_ANA_BW_400Hz = 1,
+    LSM6DS3TR_C_XL_ANA_BW_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_bw0_xl_t;
+int32_t lsm6ds3tr_c_xl_filter_analog_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_bw0_xl_t val);
+int32_t lsm6ds3tr_c_xl_filter_analog_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_bw0_xl_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_XL_LP1_ODR_DIV_2 = 0,
+    LSM6DS3TR_C_XL_LP1_ODR_DIV_4 = 1,
+    LSM6DS3TR_C_XL_LP1_NA = 2, /* ERROR CODE */
+} lsm6ds3tr_c_lpf1_bw_sel_t;
+int32_t lsm6ds3tr_c_xl_lp1_bandwidth_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_lpf1_bw_sel_t val);
+int32_t lsm6ds3tr_c_xl_lp1_bandwidth_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_lpf1_bw_sel_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_50 = 0x00,
+    LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_100 = 0x01,
+    LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_9 = 0x02,
+    LSM6DS3TR_C_XL_LOW_LAT_LP_ODR_DIV_400 = 0x03,
+    LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_50 = 0x10,
+    LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_100 = 0x11,
+    LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_9 = 0x12,
+    LSM6DS3TR_C_XL_LOW_NOISE_LP_ODR_DIV_400 = 0x13,
+    LSM6DS3TR_C_XL_LP_NA = 0x20, /* ERROR CODE */
+} lsm6ds3tr_c_input_composite_t;
+int32_t lsm6ds3tr_c_xl_lp2_bandwidth_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_input_composite_t val);
+int32_t lsm6ds3tr_c_xl_lp2_bandwidth_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_input_composite_t* val);
+
+int32_t lsm6ds3tr_c_xl_reference_mode_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_xl_reference_mode_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_XL_HP_ODR_DIV_4 = 0x00, /* Slope filter */
+    LSM6DS3TR_C_XL_HP_ODR_DIV_100 = 0x01,
+    LSM6DS3TR_C_XL_HP_ODR_DIV_9 = 0x02,
+    LSM6DS3TR_C_XL_HP_ODR_DIV_400 = 0x03,
+    LSM6DS3TR_C_XL_HP_NA = 0x10, /* ERROR CODE */
+} lsm6ds3tr_c_hpcf_xl_t;
+int32_t lsm6ds3tr_c_xl_hp_bandwidth_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_hpcf_xl_t val);
+int32_t lsm6ds3tr_c_xl_hp_bandwidth_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_hpcf_xl_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_LP2_ONLY = 0x00,
+
+    LSM6DS3TR_C_HP_16mHz_LP2 = 0x80,
+    LSM6DS3TR_C_HP_65mHz_LP2 = 0x90,
+    LSM6DS3TR_C_HP_260mHz_LP2 = 0xA0,
+    LSM6DS3TR_C_HP_1Hz04_LP2 = 0xB0,
+
+    LSM6DS3TR_C_HP_DISABLE_LP1_LIGHT = 0x0A,
+    LSM6DS3TR_C_HP_DISABLE_LP1_NORMAL = 0x09,
+    LSM6DS3TR_C_HP_DISABLE_LP_STRONG = 0x08,
+    LSM6DS3TR_C_HP_DISABLE_LP1_AGGRESSIVE = 0x0B,
+
+    LSM6DS3TR_C_HP_16mHz_LP1_LIGHT = 0x8A,
+    LSM6DS3TR_C_HP_65mHz_LP1_NORMAL = 0x99,
+    LSM6DS3TR_C_HP_260mHz_LP1_STRONG = 0xA8,
+    LSM6DS3TR_C_HP_1Hz04_LP1_AGGRESSIVE = 0xBB,
+
+    LSM6DS3TR_C_HP_GY_BAND_NA = 0xFF, /* ERROR CODE */
+} lsm6ds3tr_c_lpf1_sel_g_t;
+int32_t lsm6ds3tr_c_gy_band_pass_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_lpf1_sel_g_t val);
+int32_t lsm6ds3tr_c_gy_band_pass_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_lpf1_sel_g_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_SPI_4_WIRE = 0,
+    LSM6DS3TR_C_SPI_3_WIRE = 1,
+    LSM6DS3TR_C_SPI_MODE_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_sim_t;
+int32_t lsm6ds3tr_c_spi_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_sim_t val);
+int32_t lsm6ds3tr_c_spi_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_sim_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_I2C_ENABLE = 0,
+    LSM6DS3TR_C_I2C_DISABLE = 1,
+    LSM6DS3TR_C_I2C_MODE_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_i2c_disable_t;
+int32_t lsm6ds3tr_c_i2c_interface_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_i2c_disable_t val);
+int32_t lsm6ds3tr_c_i2c_interface_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_i2c_disable_t* val);
+
+typedef struct {
+    uint8_t int1_drdy_xl : 1;
+    uint8_t int1_drdy_g : 1;
+    uint8_t int1_boot : 1;
+    uint8_t int1_fth : 1;
+    uint8_t int1_fifo_ovr : 1;
+    uint8_t int1_full_flag : 1;
+    uint8_t int1_sign_mot : 1;
+    uint8_t int1_step_detector : 1;
+    uint8_t int1_timer : 1;
+    uint8_t int1_tilt : 1;
+    uint8_t int1_6d : 1;
+    uint8_t int1_double_tap : 1;
+    uint8_t int1_ff : 1;
+    uint8_t int1_wu : 1;
+    uint8_t int1_single_tap : 1;
+    uint8_t int1_inact_state : 1;
+    uint8_t den_drdy_int1 : 1;
+    uint8_t drdy_on_int1 : 1;
+} lsm6ds3tr_c_int1_route_t;
+int32_t lsm6ds3tr_c_pin_int1_route_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_int1_route_t val);
+int32_t lsm6ds3tr_c_pin_int1_route_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_int1_route_t* val);
+
+typedef struct {
+    uint8_t int2_drdy_xl : 1;
+    uint8_t int2_drdy_g : 1;
+    uint8_t int2_drdy_temp : 1;
+    uint8_t int2_fth : 1;
+    uint8_t int2_fifo_ovr : 1;
+    uint8_t int2_full_flag : 1;
+    uint8_t int2_step_count_ov : 1;
+    uint8_t int2_step_delta : 1;
+    uint8_t int2_iron : 1;
+    uint8_t int2_tilt : 1;
+    uint8_t int2_6d : 1;
+    uint8_t int2_double_tap : 1;
+    uint8_t int2_ff : 1;
+    uint8_t int2_wu : 1;
+    uint8_t int2_single_tap : 1;
+    uint8_t int2_inact_state : 1;
+    uint8_t int2_wrist_tilt : 1;
+} lsm6ds3tr_c_int2_route_t;
+int32_t lsm6ds3tr_c_pin_int2_route_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_int2_route_t val);
+int32_t lsm6ds3tr_c_pin_int2_route_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_int2_route_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_PUSH_PULL = 0,
+    LSM6DS3TR_C_OPEN_DRAIN = 1,
+    LSM6DS3TR_C_PIN_MODE_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_pp_od_t;
+int32_t lsm6ds3tr_c_pin_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_pp_od_t val);
+int32_t lsm6ds3tr_c_pin_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_pp_od_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_ACTIVE_HIGH = 0,
+    LSM6DS3TR_C_ACTIVE_LOW = 1,
+    LSM6DS3TR_C_POLARITY_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_h_lactive_t;
+int32_t lsm6ds3tr_c_pin_polarity_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_h_lactive_t val);
+int32_t lsm6ds3tr_c_pin_polarity_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_h_lactive_t* val);
+
+int32_t lsm6ds3tr_c_all_on_int1_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_all_on_int1_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_INT_PULSED = 0,
+    LSM6DS3TR_C_INT_LATCHED = 1,
+    LSM6DS3TR_C_INT_MODE = 2, /* ERROR CODE */
+} lsm6ds3tr_c_lir_t;
+int32_t lsm6ds3tr_c_int_notification_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_lir_t val);
+int32_t lsm6ds3tr_c_int_notification_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_lir_t* val);
+
+int32_t lsm6ds3tr_c_wkup_threshold_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_wkup_threshold_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_wkup_dur_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_wkup_dur_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_gy_sleep_mode_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_gy_sleep_mode_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_PROPERTY_DISABLE = 0,
+    LSM6DS3TR_C_XL_12Hz5_GY_NOT_AFFECTED = 1,
+    LSM6DS3TR_C_XL_12Hz5_GY_SLEEP = 2,
+    LSM6DS3TR_C_XL_12Hz5_GY_PD = 3,
+    LSM6DS3TR_C_ACT_MODE_ND = 4, /* ERROR CODE */
+} lsm6ds3tr_c_inact_en_t;
+int32_t lsm6ds3tr_c_act_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_inact_en_t val);
+int32_t lsm6ds3tr_c_act_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_inact_en_t* val);
+
+int32_t lsm6ds3tr_c_act_sleep_dur_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_act_sleep_dur_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_tap_src_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_tap_src_t* val);
+
+int32_t lsm6ds3tr_c_tap_detection_on_z_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_tap_detection_on_z_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_tap_detection_on_y_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_tap_detection_on_y_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_tap_detection_on_x_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_tap_detection_on_x_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_tap_threshold_x_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_tap_threshold_x_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_tap_shock_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_tap_shock_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_tap_quiet_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_tap_quiet_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_tap_dur_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_tap_dur_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_ONLY_SINGLE = 0,
+    LSM6DS3TR_C_BOTH_SINGLE_DOUBLE = 1,
+    LSM6DS3TR_C_TAP_MODE_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_single_double_tap_t;
+int32_t lsm6ds3tr_c_tap_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_single_double_tap_t val);
+int32_t lsm6ds3tr_c_tap_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_single_double_tap_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_ODR_DIV_2_FEED = 0,
+    LSM6DS3TR_C_LPF2_FEED = 1,
+    LSM6DS3TR_C_6D_FEED_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_low_pass_on_6d_t;
+int32_t lsm6ds3tr_c_6d_feed_data_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_low_pass_on_6d_t val);
+int32_t lsm6ds3tr_c_6d_feed_data_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_low_pass_on_6d_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_DEG_80 = 0,
+    LSM6DS3TR_C_DEG_70 = 1,
+    LSM6DS3TR_C_DEG_60 = 2,
+    LSM6DS3TR_C_DEG_50 = 3,
+    LSM6DS3TR_C_6D_TH_ND = 4, /* ERROR CODE */
+} lsm6ds3tr_c_sixd_ths_t;
+int32_t lsm6ds3tr_c_6d_threshold_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_sixd_ths_t val);
+int32_t lsm6ds3tr_c_6d_threshold_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_sixd_ths_t* val);
+
+int32_t lsm6ds3tr_c_4d_mode_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_4d_mode_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_ff_dur_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_ff_dur_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_FF_TSH_156mg = 0,
+    LSM6DS3TR_C_FF_TSH_219mg = 1,
+    LSM6DS3TR_C_FF_TSH_250mg = 2,
+    LSM6DS3TR_C_FF_TSH_312mg = 3,
+    LSM6DS3TR_C_FF_TSH_344mg = 4,
+    LSM6DS3TR_C_FF_TSH_406mg = 5,
+    LSM6DS3TR_C_FF_TSH_469mg = 6,
+    LSM6DS3TR_C_FF_TSH_500mg = 7,
+    LSM6DS3TR_C_FF_TSH_ND = 8, /* ERROR CODE */
+} lsm6ds3tr_c_ff_ths_t;
+int32_t lsm6ds3tr_c_ff_threshold_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_ff_ths_t val);
+int32_t lsm6ds3tr_c_ff_threshold_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_ff_ths_t* val);
+
+int32_t lsm6ds3tr_c_fifo_watermark_set(stmdev_ctx_t* ctx, uint16_t val);
+int32_t lsm6ds3tr_c_fifo_watermark_get(stmdev_ctx_t* ctx, uint16_t* val);
+
+int32_t lsm6ds3tr_c_fifo_data_level_get(stmdev_ctx_t* ctx, uint16_t* val);
+
+int32_t lsm6ds3tr_c_fifo_wtm_flag_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_fifo_pattern_get(stmdev_ctx_t* ctx, uint16_t* val);
+
+int32_t lsm6ds3tr_c_fifo_temp_batch_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_fifo_temp_batch_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_TRG_XL_GY_DRDY = 0,
+    LSM6DS3TR_C_TRG_STEP_DETECT = 1,
+    LSM6DS3TR_C_TRG_SH_DRDY = 2,
+    LSM6DS3TR_C_TRG_SH_ND = 3, /* ERROR CODE */
+} lsm6ds3tr_c_trigger_fifo_t;
+int32_t lsm6ds3tr_c_fifo_write_trigger_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_trigger_fifo_t val);
+int32_t lsm6ds3tr_c_fifo_write_trigger_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_trigger_fifo_t* val);
+
+int32_t lsm6ds3tr_c_fifo_pedo_and_timestamp_batch_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_fifo_pedo_and_timestamp_batch_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_FIFO_XL_DISABLE = 0,
+    LSM6DS3TR_C_FIFO_XL_NO_DEC = 1,
+    LSM6DS3TR_C_FIFO_XL_DEC_2 = 2,
+    LSM6DS3TR_C_FIFO_XL_DEC_3 = 3,
+    LSM6DS3TR_C_FIFO_XL_DEC_4 = 4,
+    LSM6DS3TR_C_FIFO_XL_DEC_8 = 5,
+    LSM6DS3TR_C_FIFO_XL_DEC_16 = 6,
+    LSM6DS3TR_C_FIFO_XL_DEC_32 = 7,
+    LSM6DS3TR_C_FIFO_XL_DEC_ND = 8, /* ERROR CODE */
+} lsm6ds3tr_c_dec_fifo_xl_t;
+int32_t lsm6ds3tr_c_fifo_xl_batch_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_fifo_xl_t val);
+int32_t lsm6ds3tr_c_fifo_xl_batch_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_fifo_xl_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_FIFO_GY_DISABLE = 0,
+    LSM6DS3TR_C_FIFO_GY_NO_DEC = 1,
+    LSM6DS3TR_C_FIFO_GY_DEC_2 = 2,
+    LSM6DS3TR_C_FIFO_GY_DEC_3 = 3,
+    LSM6DS3TR_C_FIFO_GY_DEC_4 = 4,
+    LSM6DS3TR_C_FIFO_GY_DEC_8 = 5,
+    LSM6DS3TR_C_FIFO_GY_DEC_16 = 6,
+    LSM6DS3TR_C_FIFO_GY_DEC_32 = 7,
+    LSM6DS3TR_C_FIFO_GY_DEC_ND = 8, /* ERROR CODE */
+} lsm6ds3tr_c_dec_fifo_gyro_t;
+int32_t lsm6ds3tr_c_fifo_gy_batch_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_fifo_gyro_t val);
+int32_t lsm6ds3tr_c_fifo_gy_batch_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_fifo_gyro_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_FIFO_DS3_DISABLE = 0,
+    LSM6DS3TR_C_FIFO_DS3_NO_DEC = 1,
+    LSM6DS3TR_C_FIFO_DS3_DEC_2 = 2,
+    LSM6DS3TR_C_FIFO_DS3_DEC_3 = 3,
+    LSM6DS3TR_C_FIFO_DS3_DEC_4 = 4,
+    LSM6DS3TR_C_FIFO_DS3_DEC_8 = 5,
+    LSM6DS3TR_C_FIFO_DS3_DEC_16 = 6,
+    LSM6DS3TR_C_FIFO_DS3_DEC_32 = 7,
+    LSM6DS3TR_C_FIFO_DS3_DEC_ND = 8, /* ERROR CODE */
+} lsm6ds3tr_c_dec_ds3_fifo_t;
+int32_t lsm6ds3tr_c_fifo_dataset_3_batch_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_ds3_fifo_t val);
+int32_t lsm6ds3tr_c_fifo_dataset_3_batch_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_ds3_fifo_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_FIFO_DS4_DISABLE = 0,
+    LSM6DS3TR_C_FIFO_DS4_NO_DEC = 1,
+    LSM6DS3TR_C_FIFO_DS4_DEC_2 = 2,
+    LSM6DS3TR_C_FIFO_DS4_DEC_3 = 3,
+    LSM6DS3TR_C_FIFO_DS4_DEC_4 = 4,
+    LSM6DS3TR_C_FIFO_DS4_DEC_8 = 5,
+    LSM6DS3TR_C_FIFO_DS4_DEC_16 = 6,
+    LSM6DS3TR_C_FIFO_DS4_DEC_32 = 7,
+    LSM6DS3TR_C_FIFO_DS4_DEC_ND = 8, /* ERROR CODE */
+} lsm6ds3tr_c_dec_ds4_fifo_t;
+int32_t lsm6ds3tr_c_fifo_dataset_4_batch_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_ds4_fifo_t val);
+int32_t lsm6ds3tr_c_fifo_dataset_4_batch_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_dec_ds4_fifo_t* val);
+
+int32_t lsm6ds3tr_c_fifo_xl_gy_8bit_format_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_fifo_xl_gy_8bit_format_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_fifo_stop_on_wtm_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_fifo_stop_on_wtm_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_BYPASS_MODE = 0,
+    LSM6DS3TR_C_FIFO_MODE = 1,
+    LSM6DS3TR_C_STREAM_TO_FIFO_MODE = 3,
+    LSM6DS3TR_C_BYPASS_TO_STREAM_MODE = 4,
+    LSM6DS3TR_C_STREAM_MODE = 6,
+    LSM6DS3TR_C_FIFO_MODE_ND = 8, /* ERROR CODE */
+} lsm6ds3tr_c_fifo_mode_t;
+int32_t lsm6ds3tr_c_fifo_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_fifo_mode_t val);
+int32_t lsm6ds3tr_c_fifo_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_fifo_mode_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_FIFO_DISABLE = 0,
+    LSM6DS3TR_C_FIFO_12Hz5 = 1,
+    LSM6DS3TR_C_FIFO_26Hz = 2,
+    LSM6DS3TR_C_FIFO_52Hz = 3,
+    LSM6DS3TR_C_FIFO_104Hz = 4,
+    LSM6DS3TR_C_FIFO_208Hz = 5,
+    LSM6DS3TR_C_FIFO_416Hz = 6,
+    LSM6DS3TR_C_FIFO_833Hz = 7,
+    LSM6DS3TR_C_FIFO_1k66Hz = 8,
+    LSM6DS3TR_C_FIFO_3k33Hz = 9,
+    LSM6DS3TR_C_FIFO_6k66Hz = 10,
+    LSM6DS3TR_C_FIFO_RATE_ND = 11, /* ERROR CODE */
+} lsm6ds3tr_c_odr_fifo_t;
+int32_t lsm6ds3tr_c_fifo_data_rate_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_fifo_t val);
+int32_t lsm6ds3tr_c_fifo_data_rate_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_odr_fifo_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_DEN_ACT_LOW = 0,
+    LSM6DS3TR_C_DEN_ACT_HIGH = 1,
+    LSM6DS3TR_C_DEN_POL_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_den_lh_t;
+int32_t lsm6ds3tr_c_den_polarity_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_lh_t val);
+int32_t lsm6ds3tr_c_den_polarity_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_lh_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_DEN_DISABLE = 0,
+    LSM6DS3TR_C_LEVEL_FIFO = 6,
+    LSM6DS3TR_C_LEVEL_LETCHED = 3,
+    LSM6DS3TR_C_LEVEL_TRIGGER = 2,
+    LSM6DS3TR_C_EDGE_TRIGGER = 4,
+    LSM6DS3TR_C_DEN_MODE_ND = 5, /* ERROR CODE */
+} lsm6ds3tr_c_den_mode_t;
+int32_t lsm6ds3tr_c_den_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_mode_t val);
+int32_t lsm6ds3tr_c_den_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_mode_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_STAMP_IN_GY_DATA = 0,
+    LSM6DS3TR_C_STAMP_IN_XL_DATA = 1,
+    LSM6DS3TR_C_STAMP_IN_GY_XL_DATA = 2,
+    LSM6DS3TR_C_DEN_STAMP_ND = 3, /* ERROR CODE */
+} lsm6ds3tr_c_den_xl_en_t;
+int32_t lsm6ds3tr_c_den_enable_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_xl_en_t val);
+int32_t lsm6ds3tr_c_den_enable_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_den_xl_en_t* val);
+
+int32_t lsm6ds3tr_c_den_mark_axis_z_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_den_mark_axis_z_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_den_mark_axis_y_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_den_mark_axis_y_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_den_mark_axis_x_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_den_mark_axis_x_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_pedo_step_reset_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_pedo_step_reset_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_pedo_sens_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_pedo_sens_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_pedo_threshold_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_pedo_threshold_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_PEDO_AT_2g = 0,
+    LSM6DS3TR_C_PEDO_AT_4g = 1,
+    LSM6DS3TR_C_PEDO_FS_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_pedo_fs_t;
+int32_t lsm6ds3tr_c_pedo_full_scale_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_pedo_fs_t val);
+int32_t lsm6ds3tr_c_pedo_full_scale_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_pedo_fs_t* val);
+
+int32_t lsm6ds3tr_c_pedo_debounce_steps_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_pedo_debounce_steps_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_pedo_timeout_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_pedo_timeout_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_pedo_steps_period_set(stmdev_ctx_t* ctx, uint8_t* buff);
+int32_t lsm6ds3tr_c_pedo_steps_period_get(stmdev_ctx_t* ctx, uint8_t* buff);
+
+int32_t lsm6ds3tr_c_motion_sens_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_motion_sens_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_motion_threshold_set(stmdev_ctx_t* ctx, uint8_t* buff);
+int32_t lsm6ds3tr_c_motion_threshold_get(stmdev_ctx_t* ctx, uint8_t* buff);
+
+int32_t lsm6ds3tr_c_tilt_sens_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_tilt_sens_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_wrist_tilt_sens_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_wrist_tilt_sens_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_tilt_latency_set(stmdev_ctx_t* ctx, uint8_t* buff);
+int32_t lsm6ds3tr_c_tilt_latency_get(stmdev_ctx_t* ctx, uint8_t* buff);
+
+int32_t lsm6ds3tr_c_tilt_threshold_set(stmdev_ctx_t* ctx, uint8_t* buff);
+int32_t lsm6ds3tr_c_tilt_threshold_get(stmdev_ctx_t* ctx, uint8_t* buff);
+
+int32_t lsm6ds3tr_c_tilt_src_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_a_wrist_tilt_mask_t* val);
+int32_t lsm6ds3tr_c_tilt_src_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_a_wrist_tilt_mask_t* val);
+
+int32_t lsm6ds3tr_c_mag_soft_iron_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_mag_soft_iron_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_mag_hard_iron_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_mag_hard_iron_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_mag_soft_iron_mat_set(stmdev_ctx_t* ctx, uint8_t* buff);
+int32_t lsm6ds3tr_c_mag_soft_iron_mat_get(stmdev_ctx_t* ctx, uint8_t* buff);
+
+int32_t lsm6ds3tr_c_mag_offset_set(stmdev_ctx_t* ctx, int16_t* val);
+int32_t lsm6ds3tr_c_mag_offset_get(stmdev_ctx_t* ctx, int16_t* val);
+
+int32_t lsm6ds3tr_c_func_en_set(stmdev_ctx_t* ctx, uint8_t val);
+
+int32_t lsm6ds3tr_c_sh_sync_sens_frame_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_sh_sync_sens_frame_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_RES_RATIO_2_11 = 0,
+    LSM6DS3TR_C_RES_RATIO_2_12 = 1,
+    LSM6DS3TR_C_RES_RATIO_2_13 = 2,
+    LSM6DS3TR_C_RES_RATIO_2_14 = 3,
+    LSM6DS3TR_C_RES_RATIO_ND = 4, /* ERROR CODE */
+} lsm6ds3tr_c_rr_t;
+int32_t lsm6ds3tr_c_sh_sync_sens_ratio_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_rr_t val);
+int32_t lsm6ds3tr_c_sh_sync_sens_ratio_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_rr_t* val);
+
+int32_t lsm6ds3tr_c_sh_master_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_sh_master_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_sh_pass_through_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_sh_pass_through_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_EXT_PULL_UP = 0,
+    LSM6DS3TR_C_INTERNAL_PULL_UP = 1,
+    LSM6DS3TR_C_SH_PIN_MODE = 2, /* ERROR CODE */
+} lsm6ds3tr_c_pull_up_en_t;
+int32_t lsm6ds3tr_c_sh_pin_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_pull_up_en_t val);
+int32_t lsm6ds3tr_c_sh_pin_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_pull_up_en_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_XL_GY_DRDY = 0,
+    LSM6DS3TR_C_EXT_ON_INT2_PIN = 1,
+    LSM6DS3TR_C_SH_SYNCRO_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_start_config_t;
+int32_t lsm6ds3tr_c_sh_syncro_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_start_config_t val);
+int32_t lsm6ds3tr_c_sh_syncro_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_start_config_t* val);
+
+int32_t lsm6ds3tr_c_sh_drdy_on_int1_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_sh_drdy_on_int1_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef struct {
+    lsm6ds3tr_c_sensorhub1_reg_t sh_byte_1;
+    lsm6ds3tr_c_sensorhub2_reg_t sh_byte_2;
+    lsm6ds3tr_c_sensorhub3_reg_t sh_byte_3;
+    lsm6ds3tr_c_sensorhub4_reg_t sh_byte_4;
+    lsm6ds3tr_c_sensorhub5_reg_t sh_byte_5;
+    lsm6ds3tr_c_sensorhub6_reg_t sh_byte_6;
+    lsm6ds3tr_c_sensorhub7_reg_t sh_byte_7;
+    lsm6ds3tr_c_sensorhub8_reg_t sh_byte_8;
+    lsm6ds3tr_c_sensorhub9_reg_t sh_byte_9;
+    lsm6ds3tr_c_sensorhub10_reg_t sh_byte_10;
+    lsm6ds3tr_c_sensorhub11_reg_t sh_byte_11;
+    lsm6ds3tr_c_sensorhub12_reg_t sh_byte_12;
+    lsm6ds3tr_c_sensorhub13_reg_t sh_byte_13;
+    lsm6ds3tr_c_sensorhub14_reg_t sh_byte_14;
+    lsm6ds3tr_c_sensorhub15_reg_t sh_byte_15;
+    lsm6ds3tr_c_sensorhub16_reg_t sh_byte_16;
+    lsm6ds3tr_c_sensorhub17_reg_t sh_byte_17;
+    lsm6ds3tr_c_sensorhub18_reg_t sh_byte_18;
+} lsm6ds3tr_c_emb_sh_read_t;
+int32_t lsm6ds3tr_c_sh_read_data_raw_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_emb_sh_read_t* val);
+
+int32_t lsm6ds3tr_c_sh_cmd_sens_sync_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_sh_cmd_sens_sync_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+int32_t lsm6ds3tr_c_sh_spi_sync_error_set(stmdev_ctx_t* ctx, uint8_t val);
+int32_t lsm6ds3tr_c_sh_spi_sync_error_get(stmdev_ctx_t* ctx, uint8_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_SLV_0 = 0,
+    LSM6DS3TR_C_SLV_0_1 = 1,
+    LSM6DS3TR_C_SLV_0_1_2 = 2,
+    LSM6DS3TR_C_SLV_0_1_2_3 = 3,
+    LSM6DS3TR_C_SLV_EN_ND = 4, /* ERROR CODE */
+} lsm6ds3tr_c_aux_sens_on_t;
+int32_t lsm6ds3tr_c_sh_num_of_dev_connected_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_aux_sens_on_t val);
+int32_t lsm6ds3tr_c_sh_num_of_dev_connected_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_aux_sens_on_t* val);
+
+typedef struct {
+    uint8_t slv0_add;
+    uint8_t slv0_subadd;
+    uint8_t slv0_data;
+} lsm6ds3tr_c_sh_cfg_write_t;
+int32_t lsm6ds3tr_c_sh_cfg_write(stmdev_ctx_t* ctx, lsm6ds3tr_c_sh_cfg_write_t* val);
+
+typedef struct {
+    uint8_t slv_add;
+    uint8_t slv_subadd;
+    uint8_t slv_len;
+} lsm6ds3tr_c_sh_cfg_read_t;
+int32_t lsm6ds3tr_c_sh_slv0_cfg_read(stmdev_ctx_t* ctx, lsm6ds3tr_c_sh_cfg_read_t* val);
+int32_t lsm6ds3tr_c_sh_slv1_cfg_read(stmdev_ctx_t* ctx, lsm6ds3tr_c_sh_cfg_read_t* val);
+int32_t lsm6ds3tr_c_sh_slv2_cfg_read(stmdev_ctx_t* ctx, lsm6ds3tr_c_sh_cfg_read_t* val);
+int32_t lsm6ds3tr_c_sh_slv3_cfg_read(stmdev_ctx_t* ctx, lsm6ds3tr_c_sh_cfg_read_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_SL0_NO_DEC = 0,
+    LSM6DS3TR_C_SL0_DEC_2 = 1,
+    LSM6DS3TR_C_SL0_DEC_4 = 2,
+    LSM6DS3TR_C_SL0_DEC_8 = 3,
+    LSM6DS3TR_C_SL0_DEC_ND = 4, /* ERROR CODE */
+} lsm6ds3tr_c_slave0_rate_t;
+int32_t lsm6ds3tr_c_sh_slave_0_dec_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave0_rate_t val);
+int32_t lsm6ds3tr_c_sh_slave_0_dec_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave0_rate_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_EACH_SH_CYCLE = 0,
+    LSM6DS3TR_C_ONLY_FIRST_CYCLE = 1,
+    LSM6DS3TR_C_SH_WR_MODE_ND = 2, /* ERROR CODE */
+} lsm6ds3tr_c_write_once_t;
+int32_t lsm6ds3tr_c_sh_write_mode_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_write_once_t val);
+int32_t lsm6ds3tr_c_sh_write_mode_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_write_once_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_SL1_NO_DEC = 0,
+    LSM6DS3TR_C_SL1_DEC_2 = 1,
+    LSM6DS3TR_C_SL1_DEC_4 = 2,
+    LSM6DS3TR_C_SL1_DEC_8 = 3,
+    LSM6DS3TR_C_SL1_DEC_ND = 4, /* ERROR CODE */
+} lsm6ds3tr_c_slave1_rate_t;
+int32_t lsm6ds3tr_c_sh_slave_1_dec_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave1_rate_t val);
+int32_t lsm6ds3tr_c_sh_slave_1_dec_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave1_rate_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_SL2_NO_DEC = 0,
+    LSM6DS3TR_C_SL2_DEC_2 = 1,
+    LSM6DS3TR_C_SL2_DEC_4 = 2,
+    LSM6DS3TR_C_SL2_DEC_8 = 3,
+    LSM6DS3TR_C_SL2_DEC_ND = 4, /* ERROR CODE */
+} lsm6ds3tr_c_slave2_rate_t;
+int32_t lsm6ds3tr_c_sh_slave_2_dec_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave2_rate_t val);
+int32_t lsm6ds3tr_c_sh_slave_2_dec_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave2_rate_t* val);
+
+typedef enum {
+    LSM6DS3TR_C_SL3_NO_DEC = 0,
+    LSM6DS3TR_C_SL3_DEC_2 = 1,
+    LSM6DS3TR_C_SL3_DEC_4 = 2,
+    LSM6DS3TR_C_SL3_DEC_8 = 3,
+    LSM6DS3TR_C_SL3_DEC_ND = 4, /* ERROR CODE */
+} lsm6ds3tr_c_slave3_rate_t;
+int32_t lsm6ds3tr_c_sh_slave_3_dec_set(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave3_rate_t val);
+int32_t lsm6ds3tr_c_sh_slave_3_dec_get(stmdev_ctx_t* ctx, lsm6ds3tr_c_slave3_rate_t* val);
+
+/**
+  * @}
+  *
+  */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LSM6DS3TR_C_DRIVER_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

+ 230 - 0
airmouse/tracking/main_loop.cc

@@ -0,0 +1,230 @@
+#include "main_loop.h"
+
+#include <furi.h>
+#include <furi_hal.h>
+
+#include "imu/imu.h"
+#include "orientation_tracker.h"
+#include "calibration_data.h"
+
+#define TAG "tracker"
+
+static const float CURSOR_SPEED = 1024.0 / (M_PI / 4);
+static const float STABILIZE_BIAS = 16.0;
+
+class TrackingState {
+private:
+    float yaw;
+    float pitch;
+    float dYaw;
+    float dPitch;
+    bool firstRead;
+    bool stabilize;
+    CalibrationData calibration;
+    cardboard::OrientationTracker tracker;
+    uint64_t ippus, ippus2;
+
+private:
+    float clamp(float val) {
+        while (val <= -M_PI) {
+            val += 2 * M_PI;
+        }
+        while (val >= M_PI) {
+            val -= 2 * M_PI;
+        }
+        return val;
+    }
+
+    float highpass(float oldVal, float newVal) {
+        if (!stabilize) {
+            return newVal;
+        }
+        float delta = clamp(oldVal - newVal);
+        float alpha = (float) std::max(0.0, 1 - std::pow(std::fabs(delta) * CURSOR_SPEED / STABILIZE_BIAS, 3.0));
+        return newVal + alpha * delta;
+    }
+
+    void sendCurrentState(MouseMoveCallback mouse_move, void *context) {
+        float dX = dYaw * CURSOR_SPEED;
+        float dY = dPitch * CURSOR_SPEED;
+
+        // Scale the shift down to fit the protocol.
+        if (dX > 127) {
+            dY *= 127.0 / dX;
+            dX = 127;
+        }
+        if (dX < -127) {
+            dY *= -127.0 / dX;
+            dX = -127;
+        }
+        if (dY > 127) {
+            dX *= 127.0 / dY;
+            dY = 127;
+        }
+        if (dY < -127) {
+            dX *= -127.0 / dY;
+            dY = -127;
+        }
+
+        const int8_t x = (int8_t)std::floor(dX + 0.5);
+        const int8_t y = (int8_t)std::floor(dY + 0.5);
+
+        mouse_move(x, y, context);
+
+        // Only subtract the part of the error that was already sent.
+        if (x != 0) {
+            dYaw -= x / CURSOR_SPEED;
+        }
+        if (y != 0) {
+            dPitch -= y / CURSOR_SPEED;
+        }
+    }
+
+    void onOrientation(cardboard::Vector4& quaternion) {
+        float q1 = quaternion[0]; // X * sin(T/2)
+        float q2 = quaternion[1]; // Y * sin(T/2)
+        float q3 = quaternion[2]; // Z * sin(T/2)
+        float q0 = quaternion[3]; // cos(T/2)
+
+        float yaw = std::atan2(2 * (q0 * q3 - q1 * q2), (1 - 2 * (q1 * q1 + q3 * q3)));
+        float pitch = std::asin(2 * (q0 * q1 + q2 * q3));
+        // float roll = std::atan2(2 * (q0 * q2 - q1 * q3), (1 - 2 * (q1 * q1 + q2 * q2)));
+
+        if (yaw == NAN || pitch == NAN) {
+            // NaN case, skip it
+            return;
+        }
+
+        if (firstRead) {
+            this->yaw = yaw;
+            this->pitch = pitch;
+            firstRead = false;
+        } else {
+            const float newYaw = highpass(this->yaw, yaw);
+            const float newPitch = highpass(this->pitch, pitch);
+
+            float dYaw = clamp(this->yaw - newYaw);
+            float dPitch = this->pitch - newPitch;
+            this->yaw = newYaw;
+            this->pitch = newPitch;
+
+            // Accumulate the error locally.
+            this->dYaw += dYaw;
+            this->dPitch += dPitch;
+        }
+    }
+
+public:
+    TrackingState()
+        : yaw(0)
+        , pitch(0)
+        , dYaw(0)
+        , dPitch(0)
+        , firstRead(true)
+        , stabilize(true)
+        , tracker(10000000l) { // 10 ms / 100 Hz
+        ippus = furi_hal_cortex_instructions_per_microsecond();
+        ippus2 = ippus / 2;
+    }
+
+    void beginCalibration() {
+        calibration.reset();
+    }
+
+    bool stepCalibration() {
+        if (calibration.isComplete())
+            return true;
+
+        double vec[6];
+        if (imu_read(vec) & GYR_DATA_READY) {
+            cardboard::Vector3 data(vec[3], vec[4], vec[5]);
+            furi_delay_ms(9); // Artificially limit to ~100Hz
+            return calibration.add(data);
+        }
+
+        return false;
+    }
+
+    void saveCalibration() {
+        CalibrationMedian store;
+        cardboard::Vector3 median = calibration.getMedian();
+        store.x = median[0];
+        store.y = median[1];
+        store.z = median[2];
+        CALIBRATION_DATA_SAVE(&store);
+    }
+
+    void loadCalibration() {
+        CalibrationMedian store;
+        cardboard::Vector3 median = calibration.getMedian();
+        if (CALIBRATION_DATA_LOAD(&store)) {
+            median[0] = store.x;
+            median[1] = store.y;
+            median[2] = store.z;
+        }
+
+        tracker.SetCalibration(median);
+    }
+
+    void beginTracking() {
+        loadCalibration();
+        tracker.Resume();
+    }
+
+    void stepTracking(MouseMoveCallback mouse_move, void *context) {
+        double vec[6];
+        int ret = imu_read(vec);
+        if (ret != 0) {
+            uint64_t t = (DWT->CYCCNT * 1000llu + ippus2) / ippus;
+            if (ret & ACC_DATA_READY) {
+                cardboard::AccelerometerData adata
+                    = { .system_timestamp = t, .sensor_timestamp_ns = t,
+                        .data = cardboard::Vector3(vec[0], vec[1], vec[2]) };
+                tracker.OnAccelerometerData(adata);
+            }
+            if (ret & GYR_DATA_READY) {
+                cardboard::GyroscopeData gdata
+                    = { .system_timestamp = t, .sensor_timestamp_ns = t,
+                        .data = cardboard::Vector3(vec[3], vec[4], vec[5]) };
+                cardboard::Vector4 pose = tracker.OnGyroscopeData(gdata);
+                onOrientation(pose);
+                sendCurrentState(mouse_move, context);
+            }
+        }
+    }
+
+    void stopTracking() {
+        tracker.Pause();
+    }
+};
+
+static TrackingState g_state;
+
+extern "C" {
+
+void calibration_begin() {
+    g_state.beginCalibration();
+    FURI_LOG_I(TAG, "Calibrating");
+}
+
+bool calibration_step() {
+    return g_state.stepCalibration();
+}
+
+void calibration_end() {
+    g_state.saveCalibration();
+}
+
+void tracking_begin() {
+    g_state.beginTracking();
+}
+
+void tracking_step(MouseMoveCallback mouse_move, void *context) {
+    g_state.stepTracking(mouse_move, context);
+}
+
+void tracking_end() {
+    g_state.stopTracking();
+}
+
+}

+ 21 - 0
airmouse/tracking/main_loop.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef bool (*MouseMoveCallback)(int8_t x, int8_t y, void* context);
+
+void calibration_begin();
+bool calibration_step();
+void calibration_end();
+
+void tracking_begin();
+void tracking_step(MouseMoveCallback mouse_move, void* context);
+void tracking_end();
+
+#ifdef __cplusplus
+}
+#endif

+ 95 - 0
airmouse/tracking/orientation_tracker.cc

@@ -0,0 +1,95 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "orientation_tracker.h"
+
+#include "sensors/pose_prediction.h"
+#include "util/logging.h"
+#include "util/vector.h"
+#include "util/vectorutils.h"
+
+namespace cardboard {
+
+OrientationTracker::OrientationTracker(const long sampling_period_ns)
+    : sampling_period_ns_(sampling_period_ns)
+    , calibration_(Vector3::Zero())
+    , is_tracking_(false)
+    , sensor_fusion_(new SensorFusionEkf())
+    , latest_gyroscope_data_({ 0, 0, Vector3::Zero() })
+{
+    sensor_fusion_->SetBiasEstimationEnabled(/*kGyroBiasEstimationEnabled*/ true);
+}
+
+void OrientationTracker::SetCalibration(const Vector3& calibration) {
+    calibration_ = calibration;
+}
+
+void OrientationTracker::Pause()
+{
+    if (!is_tracking_) {
+        return;
+    }
+
+    // Create a gyro event with zero velocity. This effectively stops the prediction.
+    GyroscopeData event = latest_gyroscope_data_;
+    event.data = Vector3::Zero();
+
+    OnGyroscopeData(event);
+
+    is_tracking_ = false;
+}
+
+void OrientationTracker::Resume() { is_tracking_ = true; }
+
+Vector4 OrientationTracker::GetPose(int64_t timestamp_ns) const
+{
+    Rotation predicted_rotation;
+    const PoseState pose_state = sensor_fusion_->GetLatestPoseState();
+    if (sensor_fusion_->IsFullyInitialized()) {
+        predicted_rotation = pose_state.sensor_from_start_rotation;
+    } else {
+        CARDBOARD_LOGI("Tracker not fully initialized yet. Using pose prediction only.");
+        predicted_rotation = pose_prediction::PredictPose(timestamp_ns, pose_state);
+    }
+
+    return (-predicted_rotation).GetQuaternion();
+}
+
+void OrientationTracker::OnAccelerometerData(const AccelerometerData& event)
+{
+    if (!is_tracking_) {
+        return;
+    }
+    sensor_fusion_->ProcessAccelerometerSample(event);
+}
+
+Vector4 OrientationTracker::OnGyroscopeData(const GyroscopeData& event)
+{
+    if (!is_tracking_) {
+        return Vector4();
+    }
+
+    const GyroscopeData data = { .system_timestamp = event.system_timestamp,
+        .sensor_timestamp_ns = event.sensor_timestamp_ns,
+        .data = event.data - calibration_ };
+
+    latest_gyroscope_data_ = data;
+
+    sensor_fusion_->ProcessGyroscopeSample(data);
+
+    return GetPose(data.sensor_timestamp_ns + sampling_period_ns_);
+}
+
+} // namespace cardboard

+ 68 - 0
airmouse/tracking/orientation_tracker.h

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <array>
+#include <memory>
+#include <mutex> // NOLINT
+
+#include "sensors/accelerometer_data.h"
+#include "sensors/gyroscope_data.h"
+#include "sensors/sensor_fusion_ekf.h"
+#include "util/rotation.h"
+
+namespace cardboard {
+
+// OrientationTracker encapsulates pose tracking by connecting sensors
+// to SensorFusion.
+// This pose tracker reports poses in display space.
+class OrientationTracker {
+public:
+    OrientationTracker(const long sampling_period_ns);
+
+    void SetCalibration(const Vector3& calibration);
+
+    // Pauses tracking and sensors.
+    void Pause();
+
+    // Resumes tracking ans sensors.
+    void Resume();
+
+    // Gets the predicted pose for a given timestamp.
+    Vector4 GetPose(int64_t timestamp_ns) const;
+
+    // Function called when receiving AccelerometerData.
+    //
+    // @param event sensor event.
+    void OnAccelerometerData(const AccelerometerData& event);
+
+    // Function called when receiving GyroscopeData.
+    //
+    // @param event sensor event.
+    Vector4 OnGyroscopeData(const GyroscopeData& event);
+
+private:
+    long sampling_period_ns_;
+    Vector3 calibration_;
+
+    std::atomic<bool> is_tracking_;
+    // Sensor Fusion object that stores the internal state of the filter.
+    std::unique_ptr<SensorFusionEkf> sensor_fusion_;
+    // Latest gyroscope data.
+    GyroscopeData latest_gyroscope_data_;
+};
+
+} // namespace cardboard

+ 38 - 0
airmouse/tracking/sensors/accelerometer_data.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_SENSORS_ACCELEROMETER_DATA_H_
+#define CARDBOARD_SDK_SENSORS_ACCELEROMETER_DATA_H_
+
+#include "../util/vector.h"
+
+namespace cardboard {
+
+struct AccelerometerData {
+    // System wall time.
+    uint64_t system_timestamp;
+
+    // Sensor clock time in nanoseconds.
+    uint64_t sensor_timestamp_ns;
+
+    // Acceleration force along the x,y,z axes in m/s^2. This follows android
+    // specification
+    // (https://developer.android.com/guide/topics/sensors/sensors_overview.html#sensors-coords).
+    Vector3 data;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_SENSORS_ACCELEROMETER_DATA_H_

+ 313 - 0
airmouse/tracking/sensors/gyroscope_bias_estimator.cc

@@ -0,0 +1,313 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "gyroscope_bias_estimator.h"
+
+#include <algorithm>
+#include <chrono> // NOLINT
+
+#include "../util/rotation.h"
+#include "../util/vector.h"
+
+namespace {
+
+// Cutoff frequencies in Hertz applied to our various signals, and their
+// corresponding filters.
+const float kAccelerometerLowPassCutOffFrequencyHz = 1.0f;
+const float kRotationVelocityBasedAccelerometerLowPassCutOffFrequencyHz = 0.15f;
+const float kGyroscopeLowPassCutOffFrequencyHz = 1.0f;
+const float kGyroscopeBiasLowPassCutOffFrequencyHz = 0.15f;
+
+// Note that MEMS IMU are not that precise.
+const double kEpsilon = 1.0e-8;
+
+// Size of the filtering window for the mean and median filter. The larger the
+// windows the larger the filter delay.
+const int kFilterWindowSize = 5;
+
+// Threshold used to compare rotation computed from the accelerometer and the
+// gyroscope bias.
+const double kRatioBetweenGyroBiasAndAccel = 1.5;
+
+// The minimum sum of weights we need to acquire before returning a bias
+// estimation.
+const float kMinSumOfWeightsGyroBiasThreshold = 25.0f;
+
+// Amount of change in m/s^3 we allow on the smoothed accelerometer values to
+// consider the phone static.
+const double kAccelerometerDeltaStaticThreshold = 0.5;
+
+// Amount of change in radians/s^2 we allow on the smoothed gyroscope values to
+// consider the phone static.
+const double kGyroscopeDeltaStaticThreshold = 0.03;
+
+// If the gyroscope value is above this threshold, don't update the gyroscope
+// bias estimation. This threshold is applied to the magnitude of gyroscope
+// vectors in radians/s.
+const float kGyroscopeForBiasThreshold = 0.30f;
+
+// Used to monitor if accelerometer and gyroscope have been static for a few
+// frames.
+const int kStaticFrameDetectionThreshold = 50;
+
+// Minimum time step between sensor updates.
+const double kMinTimestep = 1; // std::chrono::nanoseconds(1);
+} // namespace
+
+namespace cardboard {
+
+// A helper class to keep track of whether some signal can be considered static
+// over specified number of frames.
+class GyroscopeBiasEstimator::IsStaticCounter {
+public:
+    // Initializes a counter with the number of consecutive frames we require
+    // the signal to be static before IsRecentlyStatic returns true.
+    //
+    // @param min_static_frames_threshold number of consecutive frames we
+    //     require the signal to be static before IsRecentlyStatic returns true.
+    explicit IsStaticCounter(int min_static_frames_threshold)
+        : min_static_frames_threshold_(min_static_frames_threshold)
+        , consecutive_static_frames_(0)
+    {
+    }
+
+    // Specifies whether the current frame is considered static.
+    //
+    // @param is_static static flag for current frame.
+    void AppendFrame(bool is_static)
+    {
+        if (is_static) {
+            ++consecutive_static_frames_;
+        } else {
+            consecutive_static_frames_ = 0;
+        }
+    }
+
+    // Returns if static movement is assumed.
+    bool IsRecentlyStatic() const
+    {
+        return consecutive_static_frames_ >= min_static_frames_threshold_;
+    }
+    // Resets counter.
+    void Reset() { consecutive_static_frames_ = 0; }
+
+private:
+    const int min_static_frames_threshold_;
+    int consecutive_static_frames_;
+};
+
+GyroscopeBiasEstimator::GyroscopeBiasEstimator()
+    : accelerometer_lowpass_filter_(kAccelerometerLowPassCutOffFrequencyHz)
+    , simulated_gyroscope_from_accelerometer_lowpass_filter_(
+          kRotationVelocityBasedAccelerometerLowPassCutOffFrequencyHz)
+    , gyroscope_lowpass_filter_(kGyroscopeLowPassCutOffFrequencyHz)
+    , gyroscope_bias_lowpass_filter_(kGyroscopeBiasLowPassCutOffFrequencyHz)
+    , accelerometer_static_counter_(new IsStaticCounter(kStaticFrameDetectionThreshold))
+    , gyroscope_static_counter_(new IsStaticCounter(kStaticFrameDetectionThreshold))
+    , current_accumulated_weights_gyroscope_bias_(0.f)
+    , mean_filter_(kFilterWindowSize)
+    , median_filter_(kFilterWindowSize)
+    , last_mean_filtered_accelerometer_value_({ 0, 0, 0 })
+{
+    Reset();
+}
+
+GyroscopeBiasEstimator::~GyroscopeBiasEstimator() { }
+
+void GyroscopeBiasEstimator::Reset()
+{
+    accelerometer_lowpass_filter_.Reset();
+    gyroscope_lowpass_filter_.Reset();
+    gyroscope_bias_lowpass_filter_.Reset();
+    accelerometer_static_counter_->Reset();
+    gyroscope_static_counter_->Reset();
+}
+
+void GyroscopeBiasEstimator::ProcessGyroscope(
+    const Vector3& gyroscope_sample, uint64_t timestamp_ns)
+{
+    // Update gyroscope and gyroscope delta low-pass filters.
+    gyroscope_lowpass_filter_.AddSample(gyroscope_sample, timestamp_ns);
+
+    const auto smoothed_gyroscope_delta
+        = gyroscope_sample - gyroscope_lowpass_filter_.GetFilteredData();
+
+    gyroscope_static_counter_->AppendFrame(
+        Length(smoothed_gyroscope_delta) < kGyroscopeDeltaStaticThreshold);
+
+    // Only update the bias if the gyroscope and accelerometer signals have been
+    // relatively static recently.
+    if (gyroscope_static_counter_->IsRecentlyStatic()
+        && accelerometer_static_counter_->IsRecentlyStatic()) {
+        // Reset static counter when updating the bias fails.
+        if (!UpdateGyroscopeBias(gyroscope_sample, timestamp_ns)) {
+            // Bias update fails because of large motion, thus reset the static
+            // counter.
+            gyroscope_static_counter_->AppendFrame(false);
+        }
+    } else {
+        // Reset weights, if not static.
+        current_accumulated_weights_gyroscope_bias_ = 0;
+    }
+}
+
+void GyroscopeBiasEstimator::ProcessAccelerometer(
+    const Vector3& accelerometer_sample, uint64_t timestamp_ns)
+{
+    // Get current state of the filter.
+    const uint64_t previous_accel_timestamp_ns
+        = accelerometer_lowpass_filter_.GetMostRecentTimestampNs();
+    const bool is_low_pass_filter_init = accelerometer_lowpass_filter_.IsInitialized();
+
+    // Update accel and accel delta low-pass filters.
+    accelerometer_lowpass_filter_.AddSample(accelerometer_sample, timestamp_ns);
+
+    const auto smoothed_accelerometer_delta
+        = accelerometer_sample - accelerometer_lowpass_filter_.GetFilteredData();
+
+    accelerometer_static_counter_->AppendFrame(
+        Length(smoothed_accelerometer_delta) < kAccelerometerDeltaStaticThreshold);
+
+    // Rotation from accel cannot be differentiated with only one sample.
+    if (!is_low_pass_filter_init) {
+        simulated_gyroscope_from_accelerometer_lowpass_filter_.AddSample({ 0, 0, 0 }, timestamp_ns);
+        return;
+    }
+
+    // No need to update the simulated gyroscope at this point because the motion
+    // is too large.
+    if (!accelerometer_static_counter_->IsRecentlyStatic()) {
+        return;
+    }
+
+    median_filter_.AddSample(accelerometer_lowpass_filter_.GetFilteredData());
+
+    // This processing can only be started if the buffer is fully initialized.
+    if (!median_filter_.IsValid()) {
+        mean_filter_.AddSample(accelerometer_lowpass_filter_.GetFilteredData());
+
+        // Update the last filtered accelerometer value.
+        last_mean_filtered_accelerometer_value_ = accelerometer_lowpass_filter_.GetFilteredData();
+        return;
+    }
+
+    mean_filter_.AddSample(median_filter_.GetFilteredData());
+
+    // Compute a mock gyroscope value from accelerometer.
+    const int64_t diff = timestamp_ns - previous_accel_timestamp_ns;
+    const double timestep = static_cast<double>(diff);
+
+    simulated_gyroscope_from_accelerometer_lowpass_filter_.AddSample(
+        ComputeAngularVelocityFromLatestAccelerometer(timestep), timestamp_ns);
+    last_mean_filtered_accelerometer_value_ = mean_filter_.GetFilteredData();
+}
+
+Vector3 GyroscopeBiasEstimator::ComputeAngularVelocityFromLatestAccelerometer(double timestep) const
+{
+    if (timestep < kMinTimestep) {
+        return { 0, 0, 0 };
+    }
+
+    const auto mean_of_median = mean_filter_.GetFilteredData();
+
+    // Compute an incremental rotation between the last state and the current
+    // state.
+    //
+    // Note that we switch to double precision here because of precision problem
+    // with small rotation.
+    const auto incremental_rotation = Rotation::RotateInto(
+        Vector3(last_mean_filtered_accelerometer_value_[0],
+            last_mean_filtered_accelerometer_value_[1], last_mean_filtered_accelerometer_value_[2]),
+        Vector3(mean_of_median[0], mean_of_median[1], mean_of_median[2]));
+
+    // We use axis angle here because this is how gyroscope values are stored.
+    Vector3 incremental_rotation_axis;
+    double incremental_rotation_angle;
+    incremental_rotation.GetAxisAndAngle(&incremental_rotation_axis, &incremental_rotation_angle);
+
+    incremental_rotation_axis *= incremental_rotation_angle / timestep;
+
+    return { static_cast<float>(incremental_rotation_axis[0]),
+        static_cast<float>(incremental_rotation_axis[1]),
+        static_cast<float>(incremental_rotation_axis[2]) };
+}
+
+bool GyroscopeBiasEstimator::UpdateGyroscopeBias(
+    const Vector3& gyroscope_sample, uint64_t timestamp_ns)
+{
+    // Gyroscope values that are too big are potentially dangerous as they could
+    // originate from slow and steady head rotations.
+    //
+    // Therefore we compute an update weight which:
+    // * favors gyroscope values that are closer to 0
+    // * is set to zero if gyroscope values are greater than a threshold.
+    //
+    // This way, the gyroscope bias estimation converges faster if the phone is
+    // flat on a table, as opposed to held up somewhat stationary in the user's
+    // hands.
+
+    // If magnitude is too big, don't update the filter at all so that we don't
+    // artificially increase the number of samples accumulated by the filter.
+    const float gyroscope_sample_norm2 = Length(gyroscope_sample);
+    if (gyroscope_sample_norm2 >= kGyroscopeForBiasThreshold) {
+        return false;
+    }
+
+    float update_weight
+        = std::max(0.0f, 1 - gyroscope_sample_norm2 / kGyroscopeForBiasThreshold);
+    update_weight *= update_weight;
+    gyroscope_bias_lowpass_filter_.AddWeightedSample(
+        gyroscope_lowpass_filter_.GetFilteredData(), timestamp_ns, update_weight);
+
+    // This counter is only partially valid as the low pass filter drops large
+    // samples.
+    current_accumulated_weights_gyroscope_bias_ += update_weight;
+
+    return true;
+}
+
+Vector3 GyroscopeBiasEstimator::GetGyroscopeBias() const
+{
+    return gyroscope_bias_lowpass_filter_.GetFilteredData();
+}
+
+bool GyroscopeBiasEstimator::IsCurrentEstimateValid() const
+{
+    // Remove any bias component along the gravity because they cannot be
+    // evaluated from accelerometer.
+    const auto current_gravity_dir = Normalized(last_mean_filtered_accelerometer_value_);
+    const auto gyro_bias_lowpass = gyroscope_bias_lowpass_filter_.GetFilteredData();
+
+    const auto off_gravity_gyro_bias
+        = gyro_bias_lowpass - current_gravity_dir * Dot(gyro_bias_lowpass, current_gravity_dir);
+
+    // Checks that the current bias estimate is not correlated with the
+    // rotation computed from accelerometer.
+    const auto gyro_from_accel
+        = simulated_gyroscope_from_accelerometer_lowpass_filter_.GetFilteredData();
+    const bool isGyroscopeBiasCorrelatedWithSimulatedGyro
+        = (Length(gyro_from_accel) * kRatioBetweenGyroBiasAndAccel
+            > (Length(off_gravity_gyro_bias) + kEpsilon));
+    const bool hasEnoughSamples
+        = current_accumulated_weights_gyroscope_bias_ > kMinSumOfWeightsGyroBiasThreshold;
+    const bool areCountersStatic = gyroscope_static_counter_->IsRecentlyStatic()
+        && accelerometer_static_counter_->IsRecentlyStatic();
+
+    const bool isStatic
+        = hasEnoughSamples && areCountersStatic && !isGyroscopeBiasCorrelatedWithSimulatedGyro;
+    return isStatic;
+}
+
+} // namespace cardboard

+ 134 - 0
airmouse/tracking/sensors/gyroscope_bias_estimator.h

@@ -0,0 +1,134 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_SENSORS_GYROSCOPE_BIAS_ESTIMATOR_H_
+#define CARDBOARD_SDK_SENSORS_GYROSCOPE_BIAS_ESTIMATOR_H_
+
+#include <chrono> // NOLINT
+#include <cstdint>
+#include <list>
+#include <memory>
+#include <vector>
+
+#include "lowpass_filter.h"
+#include "mean_filter.h"
+#include "median_filter.h"
+#include "../util/vector.h"
+
+namespace cardboard {
+
+// Class that attempts to estimate the gyroscope's bias.
+// Its main idea is that it averages the gyroscope values when the phone is
+// considered stationary.
+// Usage: A client should call the ProcessGyroscope and ProcessAccelerometer
+// methods for every accelerometer and gyroscope sensor sample. This class
+// expects these calls to be frequent, i.e., at least at 10 Hz. The client can
+// then call GetGyroBias to retrieve the current estimate of the gyroscope bias.
+// For best results, the fastest available delay option should be used when
+// registering to sensors. Note that this class is not thread-safe.
+//
+// The filtering applied to the accelerometer to estimate a rotation
+// from it follows :
+// Baptiste Delporte, Laurent Perroton, Thierry Grandpierre, Jacques Trichet.
+// Accelerometer and Magnetometer Based Gyroscope Emulation on Smart Sensor
+// for a Virtual Reality Application. Sensor and Transducers Journal, 2012.
+//
+// which is a combination of a IIR filter, a median and a mean filter.
+class GyroscopeBiasEstimator {
+public:
+    GyroscopeBiasEstimator();
+    virtual ~GyroscopeBiasEstimator();
+
+    // Updates the estimator with a gyroscope event.
+    //
+    // @param gyroscope_sample the angular speed around the x, y, z axis in
+    //     radians/sec.
+    // @param timestamp_ns the nanosecond at which the event occurred. Only
+    //     guaranteed to be comparable with timestamps from other PocessGyroscope
+    //     invocations.
+    virtual void ProcessGyroscope(const Vector3& gyroscope_sample, uint64_t timestamp_ns);
+
+    // Processes accelerometer samples to estimate if device is
+    // stable or not.
+    //
+    // First we filter the accelerometer. This is done with 3 filters.
+    //  - A IIR low-pass filter
+    //  - A median filter
+    //  - A mean filter.
+    // Then a rotation is computed between consecutive filtered accelerometer
+    // samples.
+    // Finally this is converted to a velocity to emulate a gyroscope.
+    //
+    // @param accelerometer_sample the acceleration (including gravity) on the x,
+    //     y, z axis in meters/s^2.
+    // @param timestamp_ns the nanosecond at which the event occurred. Only
+    //     guaranteed to be comparable with timestamps from other
+    //     ProcessAccelerometer invocations.
+    virtual void ProcessAccelerometer(const Vector3& accelerometer_sample, uint64_t timestamp_ns);
+
+    // Returns the estimated gyroscope bias.
+    //
+    // @return Estimated gyroscope bias. A vector with zeros is returned if no
+    //     estimate has been computed.
+    virtual Vector3 GetGyroscopeBias() const;
+
+    // Resets the estimator state.
+    void Reset();
+
+    // Returns true if the current estimate returned by GetGyroscopeBias is
+    // correct. The device (measured using the sensors) has to be static for this
+    // function to return true.
+    virtual bool IsCurrentEstimateValid() const;
+
+private:
+    // A helper class to keep track of whether some signal can be considered
+    // static over specified number of frames.
+    class IsStaticCounter;
+
+    // Updates gyroscope bias estimation.
+    //
+    // @return false if the current sample is too large.
+    bool UpdateGyroscopeBias(const Vector3& gyroscope_sample, uint64_t timestamp_ns);
+
+    // Returns device angular velocity (rad/s) from the latest accelerometer data.
+    //
+    // @param timestep in seconds between the last two samples.
+    // @return rotation velocity from latest accelerometer. This can be
+    // interpreted as an gyroscope.
+    Vector3 ComputeAngularVelocityFromLatestAccelerometer(double timestep) const;
+
+    LowpassFilter accelerometer_lowpass_filter_;
+    LowpassFilter simulated_gyroscope_from_accelerometer_lowpass_filter_;
+    LowpassFilter gyroscope_lowpass_filter_;
+    LowpassFilter gyroscope_bias_lowpass_filter_;
+
+    std::unique_ptr<IsStaticCounter> accelerometer_static_counter_;
+    std::unique_ptr<IsStaticCounter> gyroscope_static_counter_;
+
+    // Sum of the weight of sample used for gyroscope filtering.
+    float current_accumulated_weights_gyroscope_bias_;
+
+    // Set of filters for accelerometer data to estimate a rotation
+    // based only on accelerometer.
+    MeanFilter mean_filter_;
+    MedianFilter median_filter_;
+
+    // Last computed filter accelerometer value used for finite differences.
+    Vector3 last_mean_filtered_accelerometer_value_;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_SENSORS_GYROSCOPE_BIAS_ESTIMATOR_H_

+ 38 - 0
airmouse/tracking/sensors/gyroscope_data.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_SENSORS_GYROSCOPE_DATA_H_
+#define CARDBOARD_SDK_SENSORS_GYROSCOPE_DATA_H_
+
+#include "../util/vector.h"
+
+namespace cardboard {
+
+struct GyroscopeData {
+    // System wall time.
+    uint64_t system_timestamp;
+
+    // Sensor clock time in nanoseconds.
+    uint64_t sensor_timestamp_ns;
+
+    // Rate of rotation around the x,y,z axes in rad/s. This follows android
+    // specification
+    // (https://developer.android.com/guide/topics/sensors/sensors_overview.html#sensors-coords).
+    Vector3 data;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_SENSORS_GYROSCOPE_DATA_H_

+ 84 - 0
airmouse/tracking/sensors/lowpass_filter.cc

@@ -0,0 +1,84 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "lowpass_filter.h"
+
+#include <cmath>
+
+namespace {
+
+const double kSecondsFromNanoseconds = 1.0e-9;
+
+// Minimum time step between sensor updates. This corresponds to 1000 Hz.
+const double kMinTimestepS = 0.001f;
+
+// Maximum time step between sensor updates. This corresponds to 1 Hz.
+const double kMaxTimestepS = 1.00f;
+
+} // namespace
+
+namespace cardboard {
+
+LowpassFilter::LowpassFilter(double cutoff_freq_hz)
+    : cutoff_time_constant_(1 / (2 * (double)M_PI * cutoff_freq_hz))
+    , initialized_(false)
+{
+    Reset();
+}
+
+void LowpassFilter::AddSample(const Vector3& sample, uint64_t timestamp_ns)
+{
+    AddWeightedSample(sample, timestamp_ns, 1.0);
+}
+
+void LowpassFilter::AddWeightedSample(const Vector3& sample, uint64_t timestamp_ns, double weight)
+{
+    if (!initialized_) {
+        // Initialize filter state
+        filtered_data_ = { sample[0], sample[1], sample[2] };
+        timestamp_most_recent_update_ns_ = timestamp_ns;
+        initialized_ = true;
+        return;
+    }
+
+    if (timestamp_ns < timestamp_most_recent_update_ns_) {
+        timestamp_most_recent_update_ns_ = timestamp_ns;
+        return;
+    }
+
+    const double delta_s = static_cast<double>(timestamp_ns - timestamp_most_recent_update_ns_)
+        * kSecondsFromNanoseconds;
+    if (delta_s <= kMinTimestepS || delta_s > kMaxTimestepS) {
+        timestamp_most_recent_update_ns_ = timestamp_ns;
+        return;
+    }
+
+    const double weighted_delta_secs = weight * delta_s;
+
+    const double alpha = weighted_delta_secs / (cutoff_time_constant_ + weighted_delta_secs);
+
+    for (int i = 0; i < 3; ++i) {
+        filtered_data_[i] = (1 - alpha) * filtered_data_[i] + alpha * sample[i];
+    }
+    timestamp_most_recent_update_ns_ = timestamp_ns;
+}
+
+void LowpassFilter::Reset()
+{
+    initialized_ = false;
+    filtered_data_ = { 0, 0, 0 };
+}
+
+} // namespace cardboard

+ 81 - 0
airmouse/tracking/sensors/lowpass_filter.h

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_SENSORS_LOWPASS_FILTER_H_
+#define CARDBOARD_SDK_SENSORS_LOWPASS_FILTER_H_
+
+#include <array>
+#include <memory>
+
+#include "../util/vector.h"
+
+namespace cardboard {
+
+// Implements an IIR, first order, low pass filter over vectors of the given
+// dimension = 3.
+// See http://en.wikipedia.org/wiki/Low-pass_filter
+class LowpassFilter {
+public:
+    // Initializes a filter with the given cutoff frequency in Hz.
+    explicit LowpassFilter(double cutoff_freq_hz);
+
+    // Updates the filter with the given sample. Note that samples with
+    // non-monotonic timestamps and successive samples with a time steps below 1
+    // ms or above 1 s are ignored.
+    //
+    // @param sample current sample data.
+    // @param timestamp_ns timestamp associated to this sample in nanoseconds.
+    void AddSample(const Vector3& sample, uint64_t timestamp_ns);
+
+    // Updates the filter with the given weighted sample.
+    //
+    // @param sample current sample data.
+    // @param timestamp_ns timestamp associated to this sample in nanoseconds.
+    // @param weight typically a [0, 1] weight factor used when applying a new
+    //     sample. A weight of 1 corresponds to calling AddSample. A weight of 0
+    //     makes the update no-op. The first initial sample is not affected by
+    //     this.
+    void AddWeightedSample(const Vector3& sample, uint64_t timestamp_ns, double weight);
+
+    // Returns the filtered value. A vector with zeros is returned if no samples
+    // have been added.
+    Vector3 GetFilteredData() const {
+        return filtered_data_;
+    }
+
+    // Returns the most recent update timestamp in ns.
+    uint64_t GetMostRecentTimestampNs() const {
+        return timestamp_most_recent_update_ns_;
+    }
+
+    // Returns true when the filter is initialized.
+    bool IsInitialized() const {
+        return initialized_;
+    }
+
+    // Resets filter state.
+    void Reset();
+
+private:
+    const double cutoff_time_constant_;
+    uint64_t timestamp_most_recent_update_ns_;
+    bool initialized_;
+
+    Vector3 filtered_data_;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_SENSORS_LOWPASS_FILTER_H_

+ 46 - 0
airmouse/tracking/sensors/mean_filter.cc

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "mean_filter.h"
+
+namespace cardboard {
+
+MeanFilter::MeanFilter(size_t filter_size)
+    : filter_size_(filter_size)
+{
+}
+
+void MeanFilter::AddSample(const Vector3& sample)
+{
+    buffer_.push_back(sample);
+    if (buffer_.size() > filter_size_) {
+        buffer_.pop_front();
+    }
+}
+
+bool MeanFilter::IsValid() const { return buffer_.size() == filter_size_; }
+
+Vector3 MeanFilter::GetFilteredData() const
+{
+    // Compute mean of the samples stored in buffer_.
+    Vector3 mean = Vector3::Zero();
+    for (auto sample : buffer_) {
+        mean += sample;
+    }
+
+    return mean / static_cast<double>(filter_size_);
+}
+
+} // namespace cardboard

+ 48 - 0
airmouse/tracking/sensors/mean_filter.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_SENSORS_MEAN_FILTER_H_
+#define CARDBOARD_SDK_SENSORS_MEAN_FILTER_H_
+
+#include <deque>
+
+#include "../util/vector.h"
+
+namespace cardboard {
+
+// Fixed window FIFO mean filter for vectors of the given dimension.
+class MeanFilter {
+public:
+    // Create a mean filter of size filter_size.
+    // @param filter_size size of the internal filter.
+    explicit MeanFilter(size_t filter_size);
+
+    // Add sample to buffer_ if buffer_ is full it drop the oldest sample.
+    void AddSample(const Vector3& sample);
+
+    // Returns true if buffer has filter_size_ sample, false otherwise.
+    bool IsValid() const;
+
+    // Returns the mean of values stored in the internal buffer.
+    Vector3 GetFilteredData() const;
+
+private:
+    const size_t filter_size_;
+    std::deque<Vector3> buffer_;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_SENSORS_MEAN_FILTER_H_

+ 69 - 0
airmouse/tracking/sensors/median_filter.cc

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "median_filter.h"
+
+#include <algorithm>
+#include <vector>
+
+#include "../util/vector.h"
+#include "../util/vectorutils.h"
+
+namespace cardboard {
+
+MedianFilter::MedianFilter(size_t filter_size)
+    : filter_size_(filter_size)
+{
+}
+
+void MedianFilter::AddSample(const Vector3& sample)
+{
+    buffer_.push_back(sample);
+    norms_.push_back(Length(sample));
+    if (buffer_.size() > filter_size_) {
+        buffer_.pop_front();
+        norms_.pop_front();
+    }
+}
+
+bool MedianFilter::IsValid() const { return buffer_.size() == filter_size_; }
+
+Vector3 MedianFilter::GetFilteredData() const
+{
+    std::vector<float> norms(norms_.begin(), norms_.end());
+
+    // Get median of value of the norms.
+    std::nth_element(norms.begin(), norms.begin() + filter_size_ / 2, norms.end());
+    const float median_norm = norms[filter_size_ / 2];
+
+    // Get median value based on their norm.
+    auto median_it = buffer_.begin();
+    for (const auto norm : norms_) {
+        if (norm == median_norm) {
+            break;
+        }
+        ++median_it;
+    }
+
+    return *median_it;
+}
+
+void MedianFilter::Reset()
+{
+    buffer_.clear();
+    norms_.clear();
+}
+
+} // namespace cardboard

+ 53 - 0
airmouse/tracking/sensors/median_filter.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_SENSORS_MEDIAN_FILTER_H_
+#define CARDBOARD_SDK_SENSORS_MEDIAN_FILTER_H_
+
+#include <deque>
+
+#include "../util/vector.h"
+
+namespace cardboard {
+
+// Fixed window FIFO median filter for vectors of the given dimension = 3.
+class MedianFilter {
+public:
+    // Creates a median filter of size filter_size.
+    // @param filter_size size of the internal filter.
+    explicit MedianFilter(size_t filter_size);
+
+    // Adds sample to buffer_ if buffer_ is full it drops the oldest sample.
+    void AddSample(const Vector3& sample);
+
+    // Returns true if buffer has filter_size_ sample, false otherwise.
+    bool IsValid() const;
+
+    // Returns the median of values store in the internal buffer.
+    Vector3 GetFilteredData() const;
+
+    // Resets the filter, removing all samples that have been added.
+    void Reset();
+
+private:
+    const size_t filter_size_;
+    std::deque<Vector3> buffer_;
+    // Contains norms of the elements stored in buffer_.
+    std::deque<float> norms_;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_SENSORS_MEDIAN_FILTER_H_

+ 71 - 0
airmouse/tracking/sensors/pose_prediction.cc

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "pose_prediction.h"
+
+#include <chrono> // NOLINT
+
+#include "../util/logging.h"
+#include "../util/vectorutils.h"
+
+namespace cardboard {
+
+namespace {
+    const double kEpsilon = 1.0e-15;
+} // namespace
+
+namespace pose_prediction {
+
+    Rotation GetRotationFromGyroscope(const Vector3& gyroscope_value, double timestep_s)
+    {
+        const double velocity = Length(gyroscope_value);
+
+        // When there is no rotation data return an identity rotation.
+        if (velocity < kEpsilon) {
+            CARDBOARD_LOGI("PosePrediction::GetRotationFromGyroscope: Velocity really small, "
+                           "returning identity rotation.");
+            return Rotation::Identity();
+        }
+        // Since the gyroscope_value is a start from sensor transformation we need to
+        // invert it to have a sensor from start transformation, hence the minus sign.
+        // For more info:
+        // http://developer.android.com/guide/topics/sensors/sensors_motion.html#sensors-motion-gyro
+        return Rotation::FromAxisAndAngle(gyroscope_value / velocity, -timestep_s * velocity);
+    }
+
+    Rotation PredictPose(int64_t requested_pose_timestamp, const PoseState& current_state)
+    {
+        // Subtracting unsigned numbers is bad when the result is negative.
+        const int64_t diff = requested_pose_timestamp - current_state.timestamp;
+        const double timestep_s = diff * 1.0e-9;
+
+        const Rotation update = GetRotationFromGyroscope(
+            current_state.sensor_from_start_rotation_velocity, timestep_s);
+        return update * current_state.sensor_from_start_rotation;
+    }
+
+    Rotation PredictPoseInv(int64_t requested_pose_timestamp, const PoseState& current_state)
+    {
+        // Subtracting unsigned numbers is bad when the result is negative.
+        const int64_t diff = requested_pose_timestamp - current_state.timestamp;
+        const double timestep_s = diff * 1.0e-9;
+
+        const Rotation update = GetRotationFromGyroscope(
+            current_state.sensor_from_start_rotation_velocity, timestep_s);
+        return current_state.sensor_from_start_rotation * (-update);
+    }
+
+} // namespace pose_prediction
+} // namespace cardboard

+ 55 - 0
airmouse/tracking/sensors/pose_prediction.h

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_SENSORS_POSE_PREDICTION_H_
+#define CARDBOARD_SDK_SENSORS_POSE_PREDICTION_H_
+
+#include <cstdint>
+
+#include "pose_state.h"
+#include "../util/rotation.h"
+
+namespace cardboard {
+namespace pose_prediction {
+
+// Returns a rotation matrix based on the integration of the gyroscope_value
+// over the timestep_s in seconds.
+// TODO(pfg): Document the space better here.
+//
+// @param gyroscope_value gyroscope sensor values.
+// @param timestep_s integration period in seconds.
+// @return Integration of the gyroscope value the rotation is from Start to
+//         Sensor Space.
+Rotation GetRotationFromGyroscope(const Vector3& gyroscope_value, double timestep_s);
+
+// Gets a predicted pose for a given time in the future (e.g. rendering time)
+// based on a linear prediction model. This uses the system current state
+// (position, velocity, etc) from the past to extrapolate a position in the
+// future.
+//
+// @param requested_pose_timestamp time at which you want the pose.
+// @param current_state current state that stores the pose and linear model at a
+//        given time prior to requested_pose_timestamp_ns.
+// @return pose from Start to Sensor Space.
+Rotation PredictPose(int64_t requested_pose_timestamp, const PoseState& current_state);
+
+// Equivalent to PredictPose, but for use with poses relative to Start Space
+// rather than sensor space.
+Rotation PredictPoseInv(int64_t requested_pose_timestamp, const PoseState& current_state);
+
+} // namespace pose_prediction
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_SENSORS_POSE_PREDICTION_H_

+ 56 - 0
airmouse/tracking/sensors/pose_state.h

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_SENSORS_POSE_STATE_H_
+#define CARDBOARD_SDK_SENSORS_POSE_STATE_H_
+
+#include "../util/rotation.h"
+#include "../util/vector.h"
+
+namespace cardboard {
+
+enum {
+    kPoseStateFlagInvalid = 1U << 0,
+    kPoseStateFlagInitializing = 1U << 1,
+    kPoseStateFlagHas6DoF = 1U << 2,
+};
+
+// Stores a head pose pose plus derivatives. This can be used for prediction.
+struct PoseState {
+    // System wall time.
+    int64_t timestamp;
+
+    // Rotation from Sensor Space to Start Space.
+    Rotation sensor_from_start_rotation;
+
+    // First derivative of the rotation.
+    Vector3 sensor_from_start_rotation_velocity;
+
+    // Current gyroscope bias in rad/s.
+    Vector3 bias;
+
+    // The position of the headset.
+    Vector3 position = Vector3(0, 0, 0);
+
+    // In the same coordinate frame as the position.
+    Vector3 velocity = Vector3(0, 0, 0);
+
+    // Flags indicating the status of the pose.
+    uint64_t flags = 0U;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_SENSORS_POSE_STATE_H_

+ 336 - 0
airmouse/tracking/sensors/sensor_fusion_ekf.cc

@@ -0,0 +1,336 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "sensor_fusion_ekf.h"
+
+#include <algorithm>
+#include <cmath>
+
+#include "accelerometer_data.h"
+#include "gyroscope_data.h"
+#include "pose_prediction.h"
+#include "../util/matrixutils.h"
+
+namespace cardboard {
+
+namespace {
+
+    const double kFiniteDifferencingEpsilon = 1.0e-7;
+    const double kEpsilon = 1.0e-15;
+    // Default gyroscope frequency. This corresponds to 100 Hz.
+    const double kDefaultGyroscopeTimestep_s = 0.01f;
+    // Maximum time between gyroscope before we start limiting the integration.
+    const double kMaximumGyroscopeSampleDelay_s = 0.04f;
+    // Compute a first-order exponential moving average of changes in accel norm per
+    // frame.
+    const double kSmoothingFactor = 0.5;
+    // Minimum and maximum values used for accelerometer noise covariance matrix.
+    // The smaller the sigma value, the more weight is given to the accelerometer
+    // signal.
+    const double kMinAccelNoiseSigma = 0.75;
+    const double kMaxAccelNoiseSigma = 7.0;
+    // Initial value for the diagonal elements of the different covariance matrices.
+    const double kInitialStateCovarianceValue = 25.0;
+    const double kInitialProcessCovarianceValue = 1.0;
+    // Maximum accelerometer norm change allowed before capping it covariance to a
+    // large value.
+    const double kMaxAccelNormChange = 0.15;
+    // Timestep IIR filtering coefficient.
+    const double kTimestepFilterCoeff = 0.95;
+    // Minimum number of sample for timestep filtering.
+    const int kTimestepFilterMinSamples = 10;
+
+    // Z direction in start space.
+    const Vector3 kCanonicalZDirection(0.0, 0.0, 1.0);
+
+    // Computes an axis-angle rotation from the input vector.
+    // angle = norm(a)
+    // axis = a.normalized()
+    // If norm(a) == 0, it returns an identity rotation.
+    static inline void RotationFromVector(const Vector3& a, Rotation& r)
+    {
+        const double norm_a = Length(a);
+        if (norm_a < kEpsilon) {
+            r = Rotation::Identity();
+            return;
+        }
+        r = Rotation::FromAxisAndAngle(a / norm_a, norm_a);
+    }
+
+} // namespace
+
+SensorFusionEkf::SensorFusionEkf()
+    : execute_reset_with_next_accelerometer_sample_(false)
+    , bias_estimation_enabled_(true)
+    , gyroscope_bias_estimate_({ 0, 0, 0 })
+{
+    ResetState();
+}
+
+void SensorFusionEkf::Reset() { execute_reset_with_next_accelerometer_sample_ = true; }
+
+void SensorFusionEkf::ResetState()
+{
+    current_state_.sensor_from_start_rotation = Rotation::Identity();
+    current_state_.sensor_from_start_rotation_velocity = Vector3::Zero();
+
+    current_gyroscope_sensor_timestamp_ns_ = 0;
+    current_accelerometer_sensor_timestamp_ns_ = 0;
+
+    state_covariance_ = Matrix3x3::Identity() * kInitialStateCovarianceValue;
+    process_covariance_ = Matrix3x3::Identity() * kInitialProcessCovarianceValue;
+    accelerometer_measurement_covariance_
+        = Matrix3x3::Identity() * kMinAccelNoiseSigma * kMinAccelNoiseSigma;
+    innovation_covariance_ = Matrix3x3::Identity();
+
+    accelerometer_measurement_jacobian_ = Matrix3x3::Zero();
+    kalman_gain_ = Matrix3x3::Zero();
+    innovation_ = Vector3::Zero();
+    accelerometer_measurement_ = Vector3::Zero();
+    prediction_ = Vector3::Zero();
+    control_input_ = Vector3::Zero();
+    state_update_ = Vector3::Zero();
+
+    moving_average_accelerometer_norm_change_ = 0.0;
+
+    is_timestep_filter_initialized_ = false;
+    is_gyroscope_filter_valid_ = false;
+    is_aligned_with_gravity_ = false;
+
+    // Reset biases.
+    gyroscope_bias_estimator_.Reset();
+    gyroscope_bias_estimate_ = { 0, 0, 0 };
+}
+
+// Here I am doing something wrong relative to time stamps. The state timestamps
+// always correspond to the gyrostamps because it would require additional
+// extrapolation if I wanted to do otherwise.
+PoseState SensorFusionEkf::GetLatestPoseState() const { return current_state_; }
+
+void SensorFusionEkf::ProcessGyroscopeSample(const GyroscopeData& sample)
+{
+    // Don't accept gyroscope sample when waiting for a reset.
+    if (execute_reset_with_next_accelerometer_sample_) {
+        return;
+    }
+
+    // Discard outdated samples.
+    if (current_gyroscope_sensor_timestamp_ns_ >= sample.sensor_timestamp_ns) {
+        current_gyroscope_sensor_timestamp_ns_ = sample.sensor_timestamp_ns;
+        return;
+    }
+
+    // Checks that we received at least one gyroscope sample in the past.
+    if (current_gyroscope_sensor_timestamp_ns_ != 0) {
+        double current_timestep_s = std::chrono::duration_cast<std::chrono::duration<double>>(
+            std::chrono::nanoseconds(
+                sample.sensor_timestamp_ns - current_gyroscope_sensor_timestamp_ns_))
+                                        .count();
+        if (current_timestep_s > kMaximumGyroscopeSampleDelay_s) {
+            if (is_gyroscope_filter_valid_) {
+                // Replaces the delta timestamp by the filtered estimates of the delta time.
+                current_timestep_s = filtered_gyroscope_timestep_s_;
+            } else {
+                current_timestep_s = kDefaultGyroscopeTimestep_s;
+            }
+        } else {
+            FilterGyroscopeTimestep(current_timestep_s);
+        }
+
+        if (bias_estimation_enabled_) {
+            gyroscope_bias_estimator_.ProcessGyroscope(sample.data, sample.sensor_timestamp_ns);
+
+            if (gyroscope_bias_estimator_.IsCurrentEstimateValid()) {
+                // As soon as the device is considered to be static, the bias estimator
+                // should have a precise estimate of the gyroscope bias.
+                gyroscope_bias_estimate_ = gyroscope_bias_estimator_.GetGyroscopeBias();
+            }
+        }
+
+        // Only integrate after receiving an accelerometer sample.
+        if (is_aligned_with_gravity_) {
+            const Rotation rotation_from_gyroscope = pose_prediction::GetRotationFromGyroscope(
+                { sample.data[0] - gyroscope_bias_estimate_[0],
+                    sample.data[1] - gyroscope_bias_estimate_[1],
+                    sample.data[2] - gyroscope_bias_estimate_[2] },
+                current_timestep_s);
+            current_state_.sensor_from_start_rotation
+                = rotation_from_gyroscope * current_state_.sensor_from_start_rotation;
+            UpdateStateCovariance(RotationMatrixNH(rotation_from_gyroscope));
+            state_covariance_ = state_covariance_
+                + ((current_timestep_s * current_timestep_s) * process_covariance_);
+        }
+    }
+
+    // Saves gyroscope event for future prediction.
+    current_state_.timestamp = sample.system_timestamp;
+    current_gyroscope_sensor_timestamp_ns_ = sample.sensor_timestamp_ns;
+    current_state_.sensor_from_start_rotation_velocity.Set(
+        sample.data[0] - gyroscope_bias_estimate_[0], sample.data[1] - gyroscope_bias_estimate_[1],
+        sample.data[2] - gyroscope_bias_estimate_[2]);
+}
+
+Vector3 SensorFusionEkf::ComputeInnovation(const Rotation& pose)
+{
+    const Vector3 predicted_down_direction = pose * kCanonicalZDirection;
+
+    const Rotation rotation
+        = Rotation::RotateInto(predicted_down_direction, accelerometer_measurement_);
+    Vector3 axis;
+    double angle;
+    rotation.GetAxisAndAngle(&axis, &angle);
+    return axis * angle;
+}
+
+void SensorFusionEkf::ComputeMeasurementJacobian()
+{
+    for (int dof = 0; dof < 3; dof++) {
+        Vector3 delta = Vector3::Zero();
+        delta[dof] = kFiniteDifferencingEpsilon;
+
+        Rotation epsilon_rotation;
+        RotationFromVector(delta, epsilon_rotation);
+        const Vector3 delta_rotation
+            = ComputeInnovation(epsilon_rotation * current_state_.sensor_from_start_rotation);
+
+        const Vector3 col = (innovation_ - delta_rotation) / kFiniteDifferencingEpsilon;
+        accelerometer_measurement_jacobian_(0, dof) = col[0];
+        accelerometer_measurement_jacobian_(1, dof) = col[1];
+        accelerometer_measurement_jacobian_(2, dof) = col[2];
+    }
+}
+
+void SensorFusionEkf::ProcessAccelerometerSample(const AccelerometerData& sample)
+{
+    // Discard outdated samples.
+    if (current_accelerometer_sensor_timestamp_ns_ >= sample.sensor_timestamp_ns) {
+        current_accelerometer_sensor_timestamp_ns_ = sample.sensor_timestamp_ns;
+        return;
+    }
+
+    // Call reset state if required.
+    if (execute_reset_with_next_accelerometer_sample_.exchange(false)) {
+        ResetState();
+    }
+
+    accelerometer_measurement_.Set(sample.data[0], sample.data[1], sample.data[2]);
+    current_accelerometer_sensor_timestamp_ns_ = sample.sensor_timestamp_ns;
+
+    if (bias_estimation_enabled_) {
+        gyroscope_bias_estimator_.ProcessAccelerometer(sample.data, sample.sensor_timestamp_ns);
+    }
+
+    if (!is_aligned_with_gravity_) {
+        // This is the first accelerometer measurement so it initializes the
+        // orientation estimate.
+        current_state_.sensor_from_start_rotation
+            = Rotation::RotateInto(kCanonicalZDirection, accelerometer_measurement_);
+        is_aligned_with_gravity_ = true;
+
+        previous_accelerometer_norm_ = Length(accelerometer_measurement_);
+        return;
+    }
+
+    UpdateMeasurementCovariance();
+
+    innovation_ = ComputeInnovation(current_state_.sensor_from_start_rotation);
+    ComputeMeasurementJacobian();
+
+    // S = H * P * H' + R
+    innovation_covariance_ = accelerometer_measurement_jacobian_ * state_covariance_
+            * Transpose(accelerometer_measurement_jacobian_)
+        + accelerometer_measurement_covariance_;
+
+    // K = P * H' * S^-1
+    kalman_gain_ = state_covariance_ * Transpose(accelerometer_measurement_jacobian_)
+        * Inverse(innovation_covariance_);
+
+    // x_update = K*nu
+    state_update_ = kalman_gain_ * innovation_;
+
+    // P = (I - K * H) * P;
+    state_covariance_ = (Matrix3x3::Identity() - kalman_gain_ * accelerometer_measurement_jacobian_)
+        * state_covariance_;
+
+    // Updates pose and associate covariance matrix.
+    Rotation rotation_from_state_update;
+    RotationFromVector(state_update_, rotation_from_state_update);
+
+    current_state_.sensor_from_start_rotation
+        = rotation_from_state_update * current_state_.sensor_from_start_rotation;
+    UpdateStateCovariance(RotationMatrixNH(rotation_from_state_update));
+}
+
+void SensorFusionEkf::UpdateStateCovariance(const Matrix3x3& motion_update)
+{
+    state_covariance_ = motion_update * state_covariance_ * Transpose(motion_update);
+}
+
+void SensorFusionEkf::FilterGyroscopeTimestep(double gyroscope_timestep_s)
+{
+    if (!is_timestep_filter_initialized_) {
+        // Initializes the filter.
+        filtered_gyroscope_timestep_s_ = gyroscope_timestep_s;
+        num_gyroscope_timestep_samples_ = 1;
+        is_timestep_filter_initialized_ = true;
+        return;
+    }
+
+    // Computes the IIR filter response.
+    filtered_gyroscope_timestep_s_ = kTimestepFilterCoeff * filtered_gyroscope_timestep_s_
+        + (1 - kTimestepFilterCoeff) * gyroscope_timestep_s;
+    ++num_gyroscope_timestep_samples_;
+
+    if (num_gyroscope_timestep_samples_ > kTimestepFilterMinSamples) {
+        is_gyroscope_filter_valid_ = true;
+    }
+}
+
+void SensorFusionEkf::UpdateMeasurementCovariance()
+{
+    const double current_accelerometer_norm = Length(accelerometer_measurement_);
+    // Norm change between current and previous accel readings.
+    const double current_accelerometer_norm_change
+        = std::abs(current_accelerometer_norm - previous_accelerometer_norm_);
+    previous_accelerometer_norm_ = current_accelerometer_norm;
+
+    moving_average_accelerometer_norm_change_ = kSmoothingFactor * current_accelerometer_norm_change
+        + (1 - kSmoothingFactor) * moving_average_accelerometer_norm_change_;
+
+    // If we hit the accel norm change threshold, we use the maximum noise sigma
+    // for the accel covariance. For anything below that, we use a linear
+    // combination between min and max sigma values.
+    const double norm_change_ratio
+        = moving_average_accelerometer_norm_change_ / kMaxAccelNormChange;
+    const double accelerometer_noise_sigma = std::min(kMaxAccelNoiseSigma,
+        kMinAccelNoiseSigma + norm_change_ratio * (kMaxAccelNoiseSigma - kMinAccelNoiseSigma));
+
+    // Updates the accel covariance matrix with the new sigma value.
+    accelerometer_measurement_covariance_
+        = Matrix3x3::Identity() * accelerometer_noise_sigma * accelerometer_noise_sigma;
+}
+
+bool SensorFusionEkf::IsBiasEstimationEnabled() const { return bias_estimation_enabled_; }
+
+void SensorFusionEkf::SetBiasEstimationEnabled(bool enable)
+{
+    if (bias_estimation_enabled_ != enable) {
+        bias_estimation_enabled_ = enable;
+        gyroscope_bias_estimate_ = { 0, 0, 0 };
+        gyroscope_bias_estimator_.Reset();
+    }
+}
+
+} // namespace cardboard

+ 188 - 0
airmouse/tracking/sensors/sensor_fusion_ekf.h

@@ -0,0 +1,188 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_SENSORS_SENSOR_FUSION_EKF_H_
+#define CARDBOARD_SDK_SENSORS_SENSOR_FUSION_EKF_H_
+
+#include <array>
+#include <atomic>
+#include <cstdint>
+
+#include "accelerometer_data.h"
+#include "gyroscope_bias_estimator.h"
+#include "gyroscope_data.h"
+#include "pose_state.h"
+#include "../util/matrix_3x3.h"
+#include "../util/rotation.h"
+#include "../util/vector.h"
+
+namespace cardboard {
+
+// Sensor fusion class that implements an Extended Kalman Filter (EKF) to
+// estimate a 3D rotation from a gyroscope and an accelerometer.
+// This system only has one state, the pose. It does not estimate any velocity
+// or acceleration.
+//
+// To learn more about Kalman filtering one can read this article which is a
+// good introduction: https://en.wikipedia.org/wiki/Kalman_filter
+class SensorFusionEkf {
+public:
+    SensorFusionEkf();
+
+    // Resets the state of the sensor fusion. It sets the velocity for
+    // prediction to zero. The reset will happen with the next
+    // accelerometer sample. Gyroscope sample will be discarded until a new
+    // accelerometer sample arrives.
+    void Reset();
+
+    // Gets the PoseState representing the latest pose and  derivatives at a
+    // particular timestamp as estimated by SensorFusion.
+    PoseState GetLatestPoseState() const;
+
+    // Processes one gyroscope sample event. This updates the pose of the system
+    // and the prediction model. The gyroscope data is assumed to be in axis angle
+    // form. Angle = ||v|| and Axis = v / ||v||, with v = [v_x, v_y, v_z]^T.
+    //
+    // @param sample gyroscope sample data.
+    void ProcessGyroscopeSample(const GyroscopeData& sample);
+
+    // Processes one accelerometer sample event. This updates the pose of the
+    // system. If the Accelerometer norm changes too much between sample it is not
+    // trusted as much.
+    //
+    // @param sample accelerometer sample data.
+    void ProcessAccelerometerSample(const AccelerometerData& sample);
+
+    // Enables or disables the drift correction by estimating the gyroscope bias.
+    //
+    // @param enable Enable drift correction.
+    void SetBiasEstimationEnabled(bool enable);
+
+    // Returns a boolean that indicates if bias estimation is enabled or disabled.
+    //
+    // @return true if bias estimation is enabled, false otherwise.
+    bool IsBiasEstimationEnabled() const;
+
+    // Returns the current gyroscope bias estimate from GyroscopeBiasEstimator.
+    Vector3 GetGyroscopeBias() const {
+        return {
+            gyroscope_bias_estimate_[0], gyroscope_bias_estimate_[1], gyroscope_bias_estimate_[2]};
+    }
+
+    // Returns true after receiving the first accelerometer measurement.
+    bool IsFullyInitialized() const {
+        return is_aligned_with_gravity_;
+    }
+
+private:
+    // Estimates the average timestep between gyroscope event.
+    void FilterGyroscopeTimestep(double gyroscope_timestep);
+
+    // Updates the state covariance with an incremental motion. It changes the
+    // space of the quadric.
+    void UpdateStateCovariance(const Matrix3x3& motion_update);
+
+    // Computes the innovation vector of the Kalman based on the input pose.
+    // It uses the latest measurement vector (i.e. accelerometer data), which must
+    // be set prior to calling this function.
+    Vector3 ComputeInnovation(const Rotation& pose);
+
+    // This computes the measurement_jacobian_ via numerical differentiation based
+    // on the current value of sensor_from_start_rotation_.
+    void ComputeMeasurementJacobian();
+
+    // Updates the accelerometer covariance matrix.
+    //
+    // This looks at the norm of recent accelerometer readings. If it has changed
+    // significantly, it means the phone receives additional acceleration than
+    // just gravity, and so the down vector information gravity signal is noisier.
+    void UpdateMeasurementCovariance();
+
+    // Reset all internal states. This is not thread safe. Lock should be acquired
+    // outside of it. This function is called in ProcessAccelerometerSample.
+    void ResetState();
+
+    // Current transformation from Sensor Space to Start Space.
+    // x_sensor = sensor_from_start_rotation_ * x_start;
+    PoseState current_state_;
+
+    // Filtering of the gyroscope timestep started?
+    bool is_timestep_filter_initialized_;
+    // Filtered gyroscope timestep valid?
+    bool is_gyroscope_filter_valid_;
+    // Sensor fusion currently aligned with gravity? After initialization
+    // it will requires a couple of accelerometer data for the system to get
+    // aligned.
+    std::atomic<bool> is_aligned_with_gravity_;
+
+    // Covariance of Kalman filter state (P in common formulation).
+    Matrix3x3 state_covariance_;
+    // Covariance of the process noise (Q in common formulation).
+    Matrix3x3 process_covariance_;
+    // Covariance of the accelerometer measurement (R in common formulation).
+    Matrix3x3 accelerometer_measurement_covariance_;
+    // Covariance of innovation (S in common formulation).
+    Matrix3x3 innovation_covariance_;
+    // Jacobian of the measurements (H in common formulation).
+    Matrix3x3 accelerometer_measurement_jacobian_;
+    // Gain of the Kalman filter (K in common formulation).
+    Matrix3x3 kalman_gain_;
+    // Parameter update a.k.a. innovation vector. (\nu in common formulation).
+    Vector3 innovation_;
+    // Measurement vector (z in common formulation).
+    Vector3 accelerometer_measurement_;
+    // Current prediction vector (g in common formulation).
+    Vector3 prediction_;
+    // Control input, currently this is only the gyroscope data (\mu in common
+    // formulation).
+    Vector3 control_input_;
+    // Update of the state vector. (x in common formulation).
+    Vector3 state_update_;
+
+    // Sensor time of the last gyroscope processed event.
+    uint64_t current_gyroscope_sensor_timestamp_ns_;
+    // Sensor time of the last accelerometer processed event.
+    uint64_t current_accelerometer_sensor_timestamp_ns_;
+
+    // Estimates of the timestep between gyroscope event in seconds.
+    double filtered_gyroscope_timestep_s_;
+    // Number of timestep samples processed so far by the filter.
+    uint32_t num_gyroscope_timestep_samples_;
+    // Norm of the accelerometer for the previous measurement.
+    double previous_accelerometer_norm_;
+    // Moving average of the accelerometer norm changes. It is computed for every
+    // sensor datum.
+    double moving_average_accelerometer_norm_change_;
+
+    // Flag indicating if a state reset should be executed with the next
+    // accelerometer sample.
+    std::atomic<bool> execute_reset_with_next_accelerometer_sample_;
+
+    // Flag indicating if bias estimation is enabled (enabled by default).
+    std::atomic<bool> bias_estimation_enabled_;
+
+    // Bias estimator and static device detector.
+    GyroscopeBiasEstimator gyroscope_bias_estimator_;
+
+    // Current bias estimate_;
+    Vector3 gyroscope_bias_estimate_;
+
+    SensorFusionEkf(const SensorFusionEkf&) = delete;
+    SensorFusionEkf& operator=(const SensorFusionEkf&) = delete;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_SENSORS_SENSOR_FUSION_EKF_H_

+ 38 - 0
airmouse/tracking/util/logging.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_UTIL_LOGGING_H_
+#define CARDBOARD_SDK_UTIL_LOGGING_H_
+
+#include <furi.h>
+#include <furi_hal.h>
+
+#if defined(__ANDROID__)
+
+#include <android/log.h>
+
+// Uncomment these to enable debug logging from native code
+
+#define CARDBOARD_LOGI(...) // __android_log_print(ANDROID_LOG_INFO, "CardboardSDK", __VA_ARGS__)
+#define CARDBOARD_LOGE(...) // __android_log_print(ANDROID_LOG_ERROR, "CardboardSDK", __VA_ARGS__)
+
+#else
+
+#define CARDBOARD_LOGI(...) // FURI_LOG_I("CardboardSDK", __VA_ARGS__)
+#define CARDBOARD_LOGE(...) // FURI_LOG_E("CardboardSDK", __VA_ARGS__)
+
+#endif
+
+#endif // CARDBOARD_SDK_UTIL_LOGGING_H_

+ 121 - 0
airmouse/tracking/util/matrix_3x3.cc

@@ -0,0 +1,121 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "matrix_3x3.h"
+
+namespace cardboard {
+
+Matrix3x3::Matrix3x3(double m00, double m01, double m02, double m10, double m11, double m12,
+    double m20, double m21, double m22)
+    : elem_ { { { m00, m01, m02 }, { m10, m11, m12 }, { m20, m21, m22 } } }
+{
+}
+
+Matrix3x3::Matrix3x3()
+{
+    for (int row = 0; row < 3; ++row) {
+        for (int col = 0; col < 3; ++col)
+            elem_[row][col] = 0;
+    }
+}
+
+Matrix3x3 Matrix3x3::Zero()
+{
+    Matrix3x3 result;
+    return result;
+}
+
+Matrix3x3 Matrix3x3::Identity()
+{
+    Matrix3x3 result;
+    for (int row = 0; row < 3; ++row) {
+        result.elem_[row][row] = 1;
+    }
+    return result;
+}
+
+void Matrix3x3::MultiplyScalar(double s)
+{
+    for (int row = 0; row < 3; ++row) {
+        for (int col = 0; col < 3; ++col)
+            elem_[row][col] *= s;
+    }
+}
+
+Matrix3x3 Matrix3x3::Negation() const
+{
+    Matrix3x3 result;
+    for (int row = 0; row < 3; ++row) {
+        for (int col = 0; col < 3; ++col)
+            result.elem_[row][col] = -elem_[row][col];
+    }
+    return result;
+}
+
+Matrix3x3 Matrix3x3::Scale(const Matrix3x3& m, double s)
+{
+    Matrix3x3 result;
+    for (int row = 0; row < 3; ++row) {
+        for (int col = 0; col < 3; ++col)
+            result.elem_[row][col] = m.elem_[row][col] * s;
+    }
+    return result;
+}
+
+Matrix3x3 Matrix3x3::Addition(const Matrix3x3& lhs, const Matrix3x3& rhs)
+{
+    Matrix3x3 result;
+    for (int row = 0; row < 3; ++row) {
+        for (int col = 0; col < 3; ++col)
+            result.elem_[row][col] = lhs.elem_[row][col] + rhs.elem_[row][col];
+    }
+    return result;
+}
+
+Matrix3x3 Matrix3x3::Subtraction(const Matrix3x3& lhs, const Matrix3x3& rhs)
+{
+    Matrix3x3 result;
+    for (int row = 0; row < 3; ++row) {
+        for (int col = 0; col < 3; ++col)
+            result.elem_[row][col] = lhs.elem_[row][col] - rhs.elem_[row][col];
+    }
+    return result;
+}
+
+Matrix3x3 Matrix3x3::Product(const Matrix3x3& m0, const Matrix3x3& m1)
+{
+    Matrix3x3 result;
+    for (int row = 0; row < 3; ++row) {
+        for (int col = 0; col < 3; ++col) {
+            result.elem_[row][col] = 0;
+            for (int i = 0; i < 3; ++i)
+                result.elem_[row][col] += m0.elem_[row][i] * m1.elem_[i][col];
+        }
+    }
+    return result;
+}
+
+bool Matrix3x3::AreEqual(const Matrix3x3& m0, const Matrix3x3& m1)
+{
+    for (int row = 0; row < 3; ++row) {
+        for (int col = 0; col < 3; ++col) {
+            if (m0.elem_[row][col] != m1.elem_[row][col])
+                return false;
+        }
+    }
+    return true;
+}
+
+} // namespace cardboard

+ 138 - 0
airmouse/tracking/util/matrix_3x3.h

@@ -0,0 +1,138 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_UTIL_MATRIX_3X3_H_
+#define CARDBOARD_SDK_UTIL_MATRIX_3X3_H_
+
+#include <array>
+#include <cstring> // For memcpy().
+#include <istream> // NOLINT
+#include <ostream> // NOLINT
+
+namespace cardboard {
+
+// The Matrix3x3 class defines a square 3-dimensional matrix. Elements are
+// stored in row-major order.
+// TODO(b/135461889): Make this class consistent with Matrix4x4.
+class Matrix3x3 {
+public:
+    // The default constructor zero-initializes all elements.
+    Matrix3x3();
+
+    // Dimension-specific constructors that are passed individual element values.
+    Matrix3x3(
+        double m00,
+        double m01,
+        double m02,
+        double m10,
+        double m11,
+        double m12,
+        double m20,
+        double m21,
+        double m22);
+
+    // Constructor that reads elements from a linear array of the correct size.
+    explicit Matrix3x3(const double array[3 * 3]);
+
+    // Returns a Matrix3x3 containing all zeroes.
+    static Matrix3x3 Zero();
+
+    // Returns an identity Matrix3x3.
+    static Matrix3x3 Identity();
+
+    // Mutable element accessors.
+    double& operator()(int row, int col) {
+        return elem_[row][col];
+    }
+    std::array<double, 3>& operator[](int row) {
+        return elem_[row];
+    }
+
+    // Read-only element accessors.
+    const double& operator()(int row, int col) const {
+        return elem_[row][col];
+    }
+    const std::array<double, 3>& operator[](int row) const {
+        return elem_[row];
+    }
+
+    // Return a pointer to the data for interfacing with libraries.
+    double* Data() {
+        return &elem_[0][0];
+    }
+    const double* Data() const {
+        return &elem_[0][0];
+    }
+
+    // Self-modifying multiplication operators.
+    void operator*=(double s) {
+        MultiplyScalar(s);
+    }
+    void operator*=(const Matrix3x3& m) {
+        *this = Product(*this, m);
+    }
+
+    // Unary operators.
+    Matrix3x3 operator-() const {
+        return Negation();
+    }
+
+    // Binary scale operators.
+    friend Matrix3x3 operator*(const Matrix3x3& m, double s) {
+        return Scale(m, s);
+    }
+    friend Matrix3x3 operator*(double s, const Matrix3x3& m) {
+        return Scale(m, s);
+    }
+
+    // Binary matrix addition.
+    friend Matrix3x3 operator+(const Matrix3x3& lhs, const Matrix3x3& rhs) {
+        return Addition(lhs, rhs);
+    }
+
+    // Binary matrix subtraction.
+    friend Matrix3x3 operator-(const Matrix3x3& lhs, const Matrix3x3& rhs) {
+        return Subtraction(lhs, rhs);
+    }
+
+    // Binary multiplication operator.
+    friend Matrix3x3 operator*(const Matrix3x3& m0, const Matrix3x3& m1) {
+        return Product(m0, m1);
+    }
+
+    // Exact equality and inequality comparisons.
+    friend bool operator==(const Matrix3x3& m0, const Matrix3x3& m1) {
+        return AreEqual(m0, m1);
+    }
+    friend bool operator!=(const Matrix3x3& m0, const Matrix3x3& m1) {
+        return !AreEqual(m0, m1);
+    }
+
+private:
+    // These private functions implement most of the operators.
+    void MultiplyScalar(double s);
+    Matrix3x3 Negation() const;
+    static Matrix3x3 Addition(const Matrix3x3& lhs, const Matrix3x3& rhs);
+    static Matrix3x3 Subtraction(const Matrix3x3& lhs, const Matrix3x3& rhs);
+    static Matrix3x3 Scale(const Matrix3x3& m, double s);
+    static Matrix3x3 Product(const Matrix3x3& m0, const Matrix3x3& m1);
+    static bool AreEqual(const Matrix3x3& m0, const Matrix3x3& m1);
+
+    std::array<std::array<double, 3>, 3> elem_;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_UTIL_MATRIX_3X3_H_

+ 87 - 0
airmouse/tracking/util/matrix_4x4.cc

@@ -0,0 +1,87 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "matrix_4x4.h"
+
+#include <algorithm>
+#include <cmath>
+#include <cstring>
+
+namespace cardboard {
+
+Matrix4x4 Matrix4x4::Identity()
+{
+    Matrix4x4 ret;
+    for (int j = 0; j < 4; ++j) {
+        for (int i = 0; i < 4; ++i) {
+            ret.m[j][i] = (i == j) ? 1 : 0;
+        }
+    }
+
+    return ret;
+}
+
+Matrix4x4 Matrix4x4::Zeros()
+{
+    Matrix4x4 ret;
+    for (int j = 0; j < 4; ++j) {
+        for (int i = 0; i < 4; ++i) {
+            ret.m[j][i] = 0;
+        }
+    }
+
+    return ret;
+}
+
+Matrix4x4 Matrix4x4::Translation(float x, float y, float z)
+{
+    Matrix4x4 ret = Matrix4x4::Identity();
+    ret.m[3][0] = x;
+    ret.m[3][1] = y;
+    ret.m[3][2] = z;
+
+    return ret;
+}
+
+Matrix4x4 Matrix4x4::Perspective(const std::array<float, 4>& fov, float zNear, float zFar)
+{
+    Matrix4x4 ret = Matrix4x4::Zeros();
+
+    const float xLeft = -std::tan(fov[0] * M_PI / 180.0f) * zNear;
+    const float xRight = std::tan(fov[1] * M_PI / 180.0f) * zNear;
+    const float yBottom = -std::tan(fov[2] * M_PI / 180.0f) * zNear;
+    const float yTop = std::tan(fov[3] * M_PI / 180.0f) * zNear;
+
+    const float X = (2 * zNear) / (xRight - xLeft);
+    const float Y = (2 * zNear) / (yTop - yBottom);
+    const float A = (xRight + xLeft) / (xRight - xLeft);
+    const float B = (yTop + yBottom) / (yTop - yBottom);
+    const float C = (zNear + zFar) / (zNear - zFar);
+    const float D = (2 * zNear * zFar) / (zNear - zFar);
+
+    ret.m[0][0] = X;
+    ret.m[2][0] = A;
+    ret.m[1][1] = Y;
+    ret.m[2][1] = B;
+    ret.m[2][2] = C;
+    ret.m[3][2] = D;
+    ret.m[2][3] = -1;
+
+    return ret;
+}
+
+void Matrix4x4::ToArray(float* array) const { std::memcpy(array, &m[0][0], 16 * sizeof(float)); }
+
+} // namespace cardboard

+ 37 - 0
airmouse/tracking/util/matrix_4x4.h

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_UTIL_MATRIX_4X4_H_
+#define CARDBOARD_SDK_UTIL_MATRIX_4X4_H_
+
+#include <array>
+
+namespace cardboard {
+
+class Matrix4x4 {
+public:
+    static Matrix4x4 Identity();
+    static Matrix4x4 Zeros();
+    static Matrix4x4 Translation(float x, float y, float z);
+    static Matrix4x4 Perspective(const std::array<float, 4>& fov, float zNear, float zFar);
+    void ToArray(float* array) const;
+
+private:
+    std::array<std::array<float, 4>, 4> m;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_UTIL_MATRIX4X4_H_

+ 148 - 0
airmouse/tracking/util/matrixutils.cc

@@ -0,0 +1,148 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "matrixutils.h"
+
+#include "vectorutils.h"
+
+namespace cardboard {
+
+namespace {
+
+    // Returns true if the cofactor for a given row and column should be negated.
+    static bool IsCofactorNegated(int row, int col)
+    {
+        // Negated iff (row + col) is odd.
+        return ((row + col) & 1) != 0;
+    }
+
+    static double CofactorElement3(const Matrix3x3& m, int row, int col)
+    {
+        static const int index[3][2] = { { 1, 2 }, { 0, 2 }, { 0, 1 } };
+        const int i0 = index[row][0];
+        const int i1 = index[row][1];
+        const int j0 = index[col][0];
+        const int j1 = index[col][1];
+        const double cofactor = m(i0, j0) * m(i1, j1) - m(i0, j1) * m(i1, j0);
+        return IsCofactorNegated(row, col) ? -cofactor : cofactor;
+    }
+
+    // Multiplies a matrix and some type of column vector to
+    // produce another column vector of the same type.
+    Vector3 MultiplyMatrixAndVector(const Matrix3x3& m, const Vector3& v)
+    {
+        Vector3 result = Vector3::Zero();
+        for (int row = 0; row < 3; ++row) {
+            for (int col = 0; col < 3; ++col)
+                result[row] += m(row, col) * v[col];
+        }
+        return result;
+    }
+
+    // Sets the upper 3x3 of a Matrix to represent a 3D rotation.
+    void RotationMatrix3x3(const Rotation& r, Matrix3x3* matrix)
+    {
+        //
+        // Given a quaternion (a,b,c,d) where d is the scalar part, the 3x3 rotation
+        // matrix is:
+        //
+        //   a^2 - b^2 - c^2 + d^2         2ab - 2cd               2ac + 2bd
+        //         2ab + 2cd        -a^2 + b^2 - c^2 + d^2         2bc - 2ad
+        //         2ac - 2bd               2bc + 2ad        -a^2 - b^2 + c^2 + d^2
+        //
+        const Vector<4>& quat = r.GetQuaternion();
+        const double aa = quat[0] * quat[0];
+        const double bb = quat[1] * quat[1];
+        const double cc = quat[2] * quat[2];
+        const double dd = quat[3] * quat[3];
+
+        const double ab = quat[0] * quat[1];
+        const double ac = quat[0] * quat[2];
+        const double bc = quat[1] * quat[2];
+
+        const double ad = quat[0] * quat[3];
+        const double bd = quat[1] * quat[3];
+        const double cd = quat[2] * quat[3];
+
+        Matrix3x3& m = *matrix;
+        m[0][0] = aa - bb - cc + dd;
+        m[0][1] = 2 * ab - 2 * cd;
+        m[0][2] = 2 * ac + 2 * bd;
+        m[1][0] = 2 * ab + 2 * cd;
+        m[1][1] = -aa + bb - cc + dd;
+        m[1][2] = 2 * bc - 2 * ad;
+        m[2][0] = 2 * ac - 2 * bd;
+        m[2][1] = 2 * bc + 2 * ad;
+        m[2][2] = -aa - bb + cc + dd;
+    }
+
+} // anonymous namespace
+
+Vector3 operator*(const Matrix3x3& m, const Vector3& v) { return MultiplyMatrixAndVector(m, v); }
+
+Matrix3x3 CofactorMatrix(const Matrix3x3& m)
+{
+    Matrix3x3 result;
+    for (int row = 0; row < 3; ++row) {
+        for (int col = 0; col < 3; ++col)
+            result(row, col) = CofactorElement3(m, row, col);
+    }
+    return result;
+}
+
+Matrix3x3 AdjugateWithDeterminant(const Matrix3x3& m, double* determinant)
+{
+    const Matrix3x3 cofactor_matrix = CofactorMatrix(m);
+    if (determinant) {
+        *determinant = m(0, 0) * cofactor_matrix(0, 0) + m(0, 1) * cofactor_matrix(0, 1)
+            + m(0, 2) * cofactor_matrix(0, 2);
+    }
+    return Transpose(cofactor_matrix);
+}
+
+// Returns the transpose of a matrix.
+Matrix3x3 Transpose(const Matrix3x3& m)
+{
+    Matrix3x3 result;
+    for (int row = 0; row < 3; ++row) {
+        for (int col = 0; col < 3; ++col)
+            result(row, col) = m(col, row);
+    }
+    return result;
+}
+
+Matrix3x3 InverseWithDeterminant(const Matrix3x3& m, double* determinant)
+{
+    // The inverse is the adjugate divided by the determinant.
+    double det;
+    Matrix3x3 adjugate = AdjugateWithDeterminant(m, &det);
+    if (determinant)
+        *determinant = det;
+    if (det == 0)
+        return Matrix3x3::Zero();
+    else
+        return adjugate * (1 / det);
+}
+
+Matrix3x3 Inverse(const Matrix3x3& m) { return InverseWithDeterminant(m, nullptr); }
+
+Matrix3x3 RotationMatrixNH(const Rotation& r)
+{
+    Matrix3x3 m;
+    RotationMatrix3x3(r, &m);
+    return m;
+}
+
+} // namespace cardboard

+ 65 - 0
airmouse/tracking/util/matrixutils.h

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_UTIL_MATRIXUTILS_H_
+#define CARDBOARD_SDK_UTIL_MATRIXUTILS_H_
+
+//
+// This file contains operators and free functions that define generic Matrix
+// operations.
+//
+
+#include "matrix_3x3.h"
+#include "rotation.h"
+#include "vector.h"
+
+namespace cardboard {
+
+// Returns the transpose of a matrix.
+Matrix3x3 Transpose(const Matrix3x3& m);
+
+// Multiplies a Matrix and a column Vector of the same Dimension to produce
+// another column Vector.
+Vector3 operator*(const Matrix3x3& m, const Vector3& v);
+
+// Returns the determinant of the matrix. This function is defined for all the
+// typedef'ed Matrix types.
+double Determinant(const Matrix3x3& m);
+
+// Returns the adjugate of the matrix, which is defined as the transpose of the
+// cofactor matrix. This function is defined for all the typedef'ed Matrix
+// types.  The determinant of the matrix is computed as a side effect, so it is
+// returned in the determinant parameter if it is not null.
+Matrix3x3 AdjugateWithDeterminant(const Matrix3x3& m, double* determinant);
+
+// Returns the inverse of the matrix. This function is defined for all the
+// typedef'ed Matrix types.  The determinant of the matrix is computed as a
+// side effect, so it is returned in the determinant parameter if it is not
+// null. If the determinant is 0, the returned matrix has all zeroes.
+Matrix3x3 InverseWithDeterminant(const Matrix3x3& m, double* determinant);
+
+// Returns the inverse of the matrix. This function is defined for all the
+// typedef'ed Matrix types. If the determinant of the matrix is 0, the returned
+// matrix has all zeroes.
+Matrix3x3 Inverse(const Matrix3x3& m);
+
+// Returns a 3x3 Matrix representing a 3D rotation. This creates a Matrix that
+// does not work with homogeneous coordinates, so the function name ends in
+// "NH".
+Matrix3x3 RotationMatrixNH(const Rotation& r);
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_UTIL_MATRIXUTILS_H_

+ 117 - 0
airmouse/tracking/util/rotation.cc

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "rotation.h"
+
+#include <cmath>
+#include <limits>
+
+#include "vectorutils.h"
+
+namespace cardboard {
+
+void Rotation::SetAxisAndAngle(const VectorType& axis, double angle)
+{
+    VectorType unit_axis = axis;
+    if (!Normalize(&unit_axis)) {
+        *this = Identity();
+    } else {
+        double a = angle / 2;
+        const double s = sin(a);
+        const VectorType v(unit_axis * s);
+        SetQuaternion(QuaternionType(v[0], v[1], v[2], cos(a)));
+    }
+}
+
+Rotation Rotation::FromRotationMatrix(const Matrix3x3& mat)
+{
+    static const double kOne = 1.0;
+    static const double kFour = 4.0;
+
+    const double d0 = mat(0, 0), d1 = mat(1, 1), d2 = mat(2, 2);
+    const double ww = kOne + d0 + d1 + d2;
+    const double xx = kOne + d0 - d1 - d2;
+    const double yy = kOne - d0 + d1 - d2;
+    const double zz = kOne - d0 - d1 + d2;
+
+    const double max = std::max(ww, std::max(xx, std::max(yy, zz)));
+    if (ww == max) {
+        const double w4 = sqrt(ww * kFour);
+        return Rotation::FromQuaternion(QuaternionType((mat(2, 1) - mat(1, 2)) / w4,
+            (mat(0, 2) - mat(2, 0)) / w4, (mat(1, 0) - mat(0, 1)) / w4, w4 / kFour));
+    }
+
+    if (xx == max) {
+        const double x4 = sqrt(xx * kFour);
+        return Rotation::FromQuaternion(QuaternionType(x4 / kFour, (mat(0, 1) + mat(1, 0)) / x4,
+            (mat(0, 2) + mat(2, 0)) / x4, (mat(2, 1) - mat(1, 2)) / x4));
+    }
+
+    if (yy == max) {
+        const double y4 = sqrt(yy * kFour);
+        return Rotation::FromQuaternion(QuaternionType((mat(0, 1) + mat(1, 0)) / y4, y4 / kFour,
+            (mat(1, 2) + mat(2, 1)) / y4, (mat(0, 2) - mat(2, 0)) / y4));
+    }
+
+    // zz is the largest component.
+    const double z4 = sqrt(zz * kFour);
+    return Rotation::FromQuaternion(QuaternionType((mat(0, 2) + mat(2, 0)) / z4,
+        (mat(1, 2) + mat(2, 1)) / z4, z4 / kFour, (mat(1, 0) - mat(0, 1)) / z4));
+}
+
+void Rotation::GetAxisAndAngle(VectorType* axis, double* angle) const
+{
+    VectorType vec(quat_[0], quat_[1], quat_[2]);
+    if (Normalize(&vec)) {
+        *angle = 2 * acos(quat_[3]);
+        *axis = vec;
+    } else {
+        *axis = VectorType(1, 0, 0);
+        *angle = 0.0;
+    }
+}
+
+Rotation Rotation::RotateInto(const VectorType& from, const VectorType& to)
+{
+    static const double kTolerance = std::numeric_limits<double>::epsilon() * 100;
+
+    // Directly build the quaternion using the following technique:
+    // http://lolengine.net/blog/2014/02/24/quaternion-from-two-vectors-final
+    const double norm_u_norm_v = sqrt(LengthSquared(from) * LengthSquared(to));
+    double real_part = norm_u_norm_v + Dot(from, to);
+    VectorType w;
+    if (real_part < kTolerance * norm_u_norm_v) {
+        // If |from| and |to| are exactly opposite, rotate 180 degrees around an
+        // arbitrary orthogonal axis. Axis normalization can happen later, when we
+        // normalize the quaternion.
+        real_part = 0.0;
+        w = (abs(from[0]) > abs(from[2])) ? VectorType(-from[1], from[0], 0)
+                                          : VectorType(0, -from[2], from[1]);
+    } else {
+        // Otherwise, build the quaternion the standard way.
+        w = Cross(from, to);
+    }
+
+    // Build and return a normalized quaternion.
+    // Note that Rotation::FromQuaternion automatically performs normalization.
+    return Rotation::FromQuaternion(QuaternionType(w[0], w[1], w[2], real_part));
+}
+
+Rotation::VectorType Rotation::operator*(const Rotation::VectorType& v) const
+{
+    return ApplyToVector(v);
+}
+
+} // namespace cardboard

+ 156 - 0
airmouse/tracking/util/rotation.h

@@ -0,0 +1,156 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_UTIL_ROTATION_H_
+#define CARDBOARD_SDK_UTIL_ROTATION_H_
+
+#include "matrix_3x3.h"
+#include "vector.h"
+#include "vectorutils.h"
+
+namespace cardboard {
+
+// The Rotation class represents a rotation around a 3-dimensional axis. It
+// uses normalized quaternions internally to make the math robust.
+class Rotation {
+public:
+    // Convenience typedefs for vector of the correct type.
+    typedef Vector<3> VectorType;
+    typedef Vector<4> QuaternionType;
+
+    // The default constructor creates an identity Rotation, which has no effect.
+    Rotation() {
+        quat_.Set(0, 0, 0, 1);
+    }
+
+    // Returns an identity Rotation, which has no effect.
+    static Rotation Identity() {
+        return Rotation();
+    }
+
+    // Sets the Rotation from a quaternion (4D vector), which is first normalized.
+    void SetQuaternion(const QuaternionType& quaternion) {
+        quat_ = Normalized(quaternion);
+    }
+
+    // Returns the Rotation as a normalized quaternion (4D vector).
+    const QuaternionType& GetQuaternion() const {
+        return quat_;
+    }
+
+    // Sets the Rotation to rotate by the given angle around the given axis,
+    // following the right-hand rule. The axis does not need to be unit
+    // length. If it is zero length, this results in an identity Rotation.
+    void SetAxisAndAngle(const VectorType& axis, double angle);
+
+    // Returns the right-hand rule axis and angle corresponding to the
+    // Rotation. If the Rotation is the identity rotation, this returns the +X
+    // axis and an angle of 0.
+    void GetAxisAndAngle(VectorType* axis, double* angle) const;
+
+    // Convenience function that constructs and returns a Rotation given an axis
+    // and angle.
+    static Rotation FromAxisAndAngle(const VectorType& axis, double angle) {
+        Rotation r;
+        r.SetAxisAndAngle(axis, angle);
+        return r;
+    }
+
+    // Convenience function that constructs and returns a Rotation given a
+    // quaternion.
+    static Rotation FromQuaternion(const QuaternionType& quat) {
+        Rotation r;
+        r.SetQuaternion(quat);
+        return r;
+    }
+
+    // Convenience function that constructs and returns a Rotation given a
+    // rotation matrix R with $R^\top R = I && det(R) = 1$.
+    static Rotation FromRotationMatrix(const Matrix3x3& mat);
+
+    // Convenience function that constructs and returns a Rotation given Euler
+    // angles that are applied in the order of rotate-Z by roll, rotate-X by
+    // pitch, rotate-Y by yaw (same as GetRollPitchYaw).
+    static Rotation FromRollPitchYaw(double roll, double pitch, double yaw) {
+        VectorType x(1, 0, 0), y(0, 1, 0), z(0, 0, 1);
+        return FromAxisAndAngle(z, roll) * (FromAxisAndAngle(x, pitch) * FromAxisAndAngle(y, yaw));
+    }
+
+    // Convenience function that constructs and returns a Rotation given Euler
+    // angles that are applied in the order of rotate-Y by yaw, rotate-X by
+    // pitch, rotate-Z by roll (same as GetYawPitchRoll).
+    static Rotation FromYawPitchRoll(double yaw, double pitch, double roll) {
+        VectorType x(1, 0, 0), y(0, 1, 0), z(0, 0, 1);
+        return FromAxisAndAngle(y, yaw) * (FromAxisAndAngle(x, pitch) * FromAxisAndAngle(z, roll));
+    }
+
+    // Constructs and returns a Rotation that rotates one vector to another along
+    // the shortest arc. This returns an identity rotation if either vector has
+    // zero length.
+    static Rotation RotateInto(const VectorType& from, const VectorType& to);
+
+    // The negation operator returns the inverse rotation.
+    friend Rotation operator-(const Rotation& r) {
+        // Because we store normalized quaternions, the inverse is found by
+        // negating the vector part.
+        return Rotation(-r.quat_[0], -r.quat_[1], -r.quat_[2], r.quat_[3]);
+    }
+
+    // Appends a rotation to this one.
+    Rotation& operator*=(const Rotation& r) {
+        const QuaternionType& qr = r.quat_;
+        QuaternionType& qt = quat_;
+        SetQuaternion(QuaternionType(
+            qr[3] * qt[0] + qr[0] * qt[3] + qr[2] * qt[1] - qr[1] * qt[2],
+            qr[3] * qt[1] + qr[1] * qt[3] + qr[0] * qt[2] - qr[2] * qt[0],
+            qr[3] * qt[2] + qr[2] * qt[3] + qr[1] * qt[0] - qr[0] * qt[1],
+            qr[3] * qt[3] - qr[0] * qt[0] - qr[1] * qt[1] - qr[2] * qt[2]));
+        return *this;
+    }
+
+    // Binary multiplication operator - returns a composite Rotation.
+    friend const Rotation operator*(const Rotation& r0, const Rotation& r1) {
+        Rotation r = r0;
+        r *= r1;
+        return r;
+    }
+
+    // Multiply a Rotation and a Vector to get a Vector.
+    VectorType operator*(const VectorType& v) const;
+
+private:
+    // Private constructor that builds a Rotation from quaternion components.
+    Rotation(double q0, double q1, double q2, double q3)
+        : quat_(q0, q1, q2, q3) {
+    }
+
+    // Applies a Rotation to a Vector to rotate the Vector. Method borrowed from:
+    // http://blog.molecular-matters.com/2013/05/24/a-faster-quaternion-vector-multiplication/
+    VectorType ApplyToVector(const VectorType& v) const {
+        VectorType im(quat_[0], quat_[1], quat_[2]);
+        VectorType temp = 2.0 * Cross(im, v);
+        return v + quat_[3] * temp + Cross(im, temp);
+    }
+
+    // The rotation represented as a normalized quaternion. (Unit quaternions are
+    // required for constructing rotation matrices, so it makes sense to always
+    // store them that way.) The vector part is in the first 3 elements, and the
+    // scalar part is in the last element.
+    QuaternionType quat_;
+};
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_UTIL_ROTATION_H_

+ 251 - 0
airmouse/tracking/util/vector.h

@@ -0,0 +1,251 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_UTIL_VECTOR_H_
+#define CARDBOARD_SDK_UTIL_VECTOR_H_
+
+#include <array>
+
+namespace cardboard {
+
+// Geometric N-dimensional Vector class.
+template <int Dimension>
+class Vector {
+public:
+    // The default constructor zero-initializes all elements.
+    Vector();
+
+    // Dimension-specific constructors that are passed individual element values.
+    constexpr Vector(double e0, double e1, double e2);
+    constexpr Vector(double e0, double e1, double e2, double e3);
+
+    // Constructor for a Vector of dimension N from a Vector of dimension N-1 and
+    // a scalar of the correct type, assuming N is at least 2.
+    // constexpr Vector(const Vector<Dimension - 1>& v, double s);
+
+    void Set(double e0, double e1, double e2); // Only when Dimension == 3.
+    void Set(double e0, double e1, double e2,
+             double e3); // Only when Dimension == 4.
+
+    // Mutable element accessor.
+    double& operator[](int index) {
+        return elem_[index];
+    }
+
+    // Element accessor.
+    double operator[](int index) const {
+        return elem_[index];
+    }
+
+    // Returns a Vector containing all zeroes.
+    static Vector Zero();
+
+    // Self-modifying operators.
+    void operator+=(const Vector& v) {
+        Add(v);
+    }
+    void operator-=(const Vector& v) {
+        Subtract(v);
+    }
+    void operator*=(double s) {
+        Multiply(s);
+    }
+    void operator/=(double s) {
+        Divide(s);
+    }
+
+    // Unary negation operator.
+    Vector operator-() const {
+        return Negation();
+    }
+
+    // Binary operators.
+    friend Vector operator+(const Vector& v0, const Vector& v1) {
+        return Sum(v0, v1);
+    }
+    friend Vector operator-(const Vector& v0, const Vector& v1) {
+        return Difference(v0, v1);
+    }
+    friend Vector operator*(const Vector& v, double s) {
+        return Scale(v, s);
+    }
+    friend Vector operator*(double s, const Vector& v) {
+        return Scale(v, s);
+    }
+    friend Vector operator*(const Vector& v, const Vector& s) {
+        return Product(v, s);
+    }
+    friend Vector operator/(const Vector& v, double s) {
+        return Divide(v, s);
+    }
+
+    // Self-modifying addition.
+    void Add(const Vector& v);
+    // Self-modifying subtraction.
+    void Subtract(const Vector& v);
+    // Self-modifying multiplication by a scalar.
+    void Multiply(double s);
+    // Self-modifying division by a scalar.
+    void Divide(double s);
+
+    // Unary negation.
+    Vector Negation() const;
+
+    // Binary component-wise multiplication.
+    static Vector Product(const Vector& v0, const Vector& v1);
+    // Binary component-wise addition.
+    static Vector Sum(const Vector& v0, const Vector& v1);
+    // Binary component-wise subtraction.
+    static Vector Difference(const Vector& v0, const Vector& v1);
+    // Binary multiplication by a scalar.
+    static Vector Scale(const Vector& v, double s);
+    // Binary division by a scalar.
+    static Vector Divide(const Vector& v, double s);
+
+private:
+    std::array<double, Dimension> elem_;
+};
+//------------------------------------------------------------------------------
+
+template <int Dimension>
+Vector<Dimension>::Vector() {
+    for(int i = 0; i < Dimension; i++) {
+        elem_[i] = 0;
+    }
+}
+
+template <int Dimension>
+constexpr Vector<Dimension>::Vector(double e0, double e1, double e2)
+    : elem_{e0, e1, e2} {
+}
+
+template <int Dimension>
+constexpr Vector<Dimension>::Vector(double e0, double e1, double e2, double e3)
+    : elem_{e0, e1, e2, e3} {
+}
+/*
+template <>
+constexpr Vector<4>::Vector(const Vector<3>& v, double s)
+    : elem_{v[0], v[1], v[2], s} {}
+*/
+template <int Dimension>
+void Vector<Dimension>::Set(double e0, double e1, double e2) {
+    elem_[0] = e0;
+    elem_[1] = e1;
+    elem_[2] = e2;
+}
+
+template <int Dimension>
+void Vector<Dimension>::Set(double e0, double e1, double e2, double e3) {
+    elem_[0] = e0;
+    elem_[1] = e1;
+    elem_[2] = e2;
+    elem_[3] = e3;
+}
+
+template <int Dimension>
+Vector<Dimension> Vector<Dimension>::Zero() {
+    Vector<Dimension> v;
+    return v;
+}
+
+template <int Dimension>
+void Vector<Dimension>::Add(const Vector& v) {
+    for(int i = 0; i < Dimension; i++) {
+        elem_[i] += v[i];
+    }
+}
+
+template <int Dimension>
+void Vector<Dimension>::Subtract(const Vector& v) {
+    for(int i = 0; i < Dimension; i++) {
+        elem_[i] -= v[i];
+    }
+}
+
+template <int Dimension>
+void Vector<Dimension>::Multiply(double s) {
+    for(int i = 0; i < Dimension; i++) {
+        elem_[i] *= s;
+    }
+}
+
+template <int Dimension>
+void Vector<Dimension>::Divide(double s) {
+    for(int i = 0; i < Dimension; i++) {
+        elem_[i] /= s;
+    }
+}
+
+template <int Dimension>
+Vector<Dimension> Vector<Dimension>::Negation() const {
+    Vector<Dimension> ret;
+    for(int i = 0; i < Dimension; i++) {
+        ret.elem_[i] = -elem_[i];
+    }
+    return ret;
+}
+
+template <int Dimension>
+Vector<Dimension> Vector<Dimension>::Product(const Vector& v0, const Vector& v1) {
+    Vector<Dimension> ret;
+    for(int i = 0; i < Dimension; i++) {
+        ret.elem_[i] = v0[i] * v1[i];
+    }
+    return ret;
+}
+
+template <int Dimension>
+Vector<Dimension> Vector<Dimension>::Sum(const Vector& v0, const Vector& v1) {
+    Vector<Dimension> ret;
+    for(int i = 0; i < Dimension; i++) {
+        ret.elem_[i] = v0[i] + v1[i];
+    }
+    return ret;
+}
+
+template <int Dimension>
+Vector<Dimension> Vector<Dimension>::Difference(const Vector& v0, const Vector& v1) {
+    Vector<Dimension> ret;
+    for(int i = 0; i < Dimension; i++) {
+        ret.elem_[i] = v0[i] - v1[i];
+    }
+    return ret;
+}
+
+template <int Dimension>
+Vector<Dimension> Vector<Dimension>::Scale(const Vector& v, double s) {
+    Vector<Dimension> ret;
+    for(int i = 0; i < Dimension; i++) {
+        ret.elem_[i] = v[i] * s;
+    }
+    return ret;
+}
+
+template <int Dimension>
+Vector<Dimension> Vector<Dimension>::Divide(const Vector& v, double s) {
+    Vector<Dimension> ret;
+    for(int i = 0; i < Dimension; i++) {
+        ret.elem_[i] = v[i] / s;
+    }
+    return ret;
+}
+
+typedef Vector<3> Vector3;
+typedef Vector<4> Vector4;
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_UTIL_VECTOR_H_

+ 40 - 0
airmouse/tracking/util/vectorutils.cc

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "vectorutils.h"
+
+namespace cardboard {
+
+// Returns the dot (inner) product of two Vectors.
+double Dot(const Vector<3>& v0, const Vector<3>& v1)
+{
+    return v0[0] * v1[0] + v0[1] * v1[1] + v0[2] * v1[2];
+}
+
+// Returns the dot (inner) product of two Vectors.
+double Dot(const Vector<4>& v0, const Vector<4>& v1)
+{
+    return v0[0] * v1[0] + v0[1] * v1[1] + v0[2] * v1[2] + v0[3] * v1[3];
+}
+
+// Returns the 3-dimensional cross product of 2 Vectors. Note that this is
+// defined only for 3-dimensional Vectors.
+Vector<3> Cross(const Vector<3>& v0, const Vector<3>& v1)
+{
+    return Vector<3>(v0[1] * v1[2] - v0[2] * v1[1], v0[2] * v1[0] - v0[0] * v1[2],
+        v0[0] * v1[1] - v0[1] * v1[0]);
+}
+
+} // namespace cardboard

+ 76 - 0
airmouse/tracking/util/vectorutils.h

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2019 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CARDBOARD_SDK_UTIL_VECTORUTILS_H_
+#define CARDBOARD_SDK_UTIL_VECTORUTILS_H_
+
+//
+// This file contains free functions that operate on Vector instances.
+//
+
+#include <cmath>
+
+#include "vector.h"
+
+namespace cardboard {
+
+// Returns the dot (inner) product of two Vectors.
+double Dot(const Vector<3>& v0, const Vector<3>& v1);
+
+// Returns the dot (inner) product of two Vectors.
+double Dot(const Vector<4>& v0, const Vector<4>& v1);
+
+// Returns the 3-dimensional cross product of 2 Vectors. Note that this is
+// defined only for 3-dimensional Vectors.
+Vector<3> Cross(const Vector<3>& v0, const Vector<3>& v1);
+
+// Returns the square of the length of a Vector.
+template <int Dimension>
+double LengthSquared(const Vector<Dimension>& v) {
+    return Dot(v, v);
+}
+
+// Returns the geometric length of a Vector.
+template <int Dimension>
+double Length(const Vector<Dimension>& v) {
+    return sqrt(LengthSquared(v));
+}
+
+// the Vector untouched and returns false.
+template <int Dimension>
+bool Normalize(Vector<Dimension>* v) {
+    const double len = Length(*v);
+    if(len == 0) {
+        return false;
+    } else {
+        (*v) /= len;
+        return true;
+    }
+}
+
+// Returns a unit-length version of a Vector. If the given Vector has no
+// length, this returns a Zero() Vector.
+template <int Dimension>
+Vector<Dimension> Normalized(const Vector<Dimension>& v) {
+    Vector<Dimension> result = v;
+    if(Normalize(&result))
+        return result;
+    else
+        return Vector<Dimension>::Zero();
+}
+
+} // namespace cardboard
+
+#endif // CARDBOARD_SDK_UTIL_VECTORUTILS_H_

+ 314 - 0
airmouse/views/bt_mouse.c

@@ -0,0 +1,314 @@
+#include "bt_mouse.h"
+#include "../tracking/main_loop.h"
+
+#include <furi.h>
+#include <furi_hal_bt.h>
+#include <furi_hal_bt_hid.h>
+#include <furi_hal_usb_hid.h>
+#include <bt/bt_service/bt.h>
+#include <gui/elements.h>
+#include <notification/notification.h>
+#include <notification/notification_messages.h>
+
+typedef struct ButtonEvent {
+    int8_t button;
+    bool state;
+} ButtonEvent;
+
+#define BTN_EVT_QUEUE_SIZE 32
+
+struct BtMouse {
+    View* view;
+    ViewDispatcher* view_dispatcher;
+    Bt* bt;
+    NotificationApp* notifications;
+    FuriMutex* mutex;
+    FuriThread* thread;
+    bool connected;
+
+    // Current mouse state
+    uint8_t btn;
+    int dx;
+    int dy;
+    int wheel;
+
+    // Circular buffer;
+    // (qhead == qtail) means either empty or overflow.
+    // We'll ignore overflow and treat it as empty.
+    int qhead;
+    int qtail;
+    ButtonEvent queue[BTN_EVT_QUEUE_SIZE];
+};
+
+#define BT_MOUSE_FLAG_INPUT_EVENT (1UL << 0)
+#define BT_MOUSE_FLAG_KILL_THREAD (1UL << 1)
+#define BT_MOUSE_FLAG_ALL (BT_MOUSE_FLAG_INPUT_EVENT | BT_MOUSE_FLAG_KILL_THREAD)
+
+#define MOUSE_SCROLL 2
+
+static void bt_mouse_notify_event(BtMouse* bt_mouse) {
+    FuriThreadId thread_id = furi_thread_get_id(bt_mouse->thread);
+    furi_assert(thread_id);
+    furi_thread_flags_set(thread_id, BT_MOUSE_FLAG_INPUT_EVENT);
+}
+
+static void bt_mouse_draw_callback(Canvas* canvas, void* context) {
+    UNUSED(context);
+    canvas_clear(canvas);
+    canvas_set_font(canvas, FontPrimary);
+    canvas_draw_str(canvas, 0, 10, "Bluetooth Mouse mode");
+    canvas_set_font(canvas, FontSecondary);
+    canvas_draw_str(canvas, 0, 63, "Hold [back] to exit");
+}
+
+static void bt_mouse_button_state(BtMouse* bt_mouse, int8_t button, bool state) {
+    ButtonEvent event;
+    event.button = button;
+    event.state = state;
+
+    if(bt_mouse->connected) {
+        furi_mutex_acquire(bt_mouse->mutex, FuriWaitForever);
+        bt_mouse->queue[bt_mouse->qtail++] = event;
+        bt_mouse->qtail %= BTN_EVT_QUEUE_SIZE;
+        furi_mutex_release(bt_mouse->mutex);
+        bt_mouse_notify_event(bt_mouse);
+    }
+}
+
+static void bt_mouse_process(BtMouse* bt_mouse, InputEvent* event) {
+    with_view_model(
+        bt_mouse->view,
+        void* model,
+        {
+            UNUSED(model);
+            if(event->key == InputKeyUp) {
+                if(event->type == InputTypePress) {
+                    bt_mouse_button_state(bt_mouse, HID_MOUSE_BTN_LEFT, true);
+                } else if(event->type == InputTypeRelease) {
+                    bt_mouse_button_state(bt_mouse, HID_MOUSE_BTN_LEFT, false);
+                }
+            } else if(event->key == InputKeyDown) {
+                if(event->type == InputTypePress) {
+                    bt_mouse_button_state(bt_mouse, HID_MOUSE_BTN_RIGHT, true);
+                } else if(event->type == InputTypeRelease) {
+                    bt_mouse_button_state(bt_mouse, HID_MOUSE_BTN_RIGHT, false);
+                }
+            } else if(event->key == InputKeyOk) {
+                if(event->type == InputTypePress) {
+                    bt_mouse_button_state(bt_mouse, HID_MOUSE_BTN_WHEEL, true);
+                } else if(event->type == InputTypeRelease) {
+                    bt_mouse_button_state(bt_mouse, HID_MOUSE_BTN_WHEEL, false);
+                }
+            } else if(event->key == InputKeyRight) {
+                if(event->type == InputTypePress || event->type == InputTypeRepeat) {
+                    bt_mouse->wheel = MOUSE_SCROLL;
+                }
+            } else if(event->key == InputKeyLeft) {
+                if(event->type == InputTypePress || event->type == InputTypeRepeat) {
+                    bt_mouse->wheel = -MOUSE_SCROLL;
+                }
+            }
+        },
+        true);
+}
+
+static bool bt_mouse_input_callback(InputEvent* event, void* context) {
+    furi_assert(context);
+    BtMouse* bt_mouse = context;
+    bool consumed = false;
+
+    if(event->type == InputTypeLong && event->key == InputKeyBack) {
+        furi_hal_bt_hid_mouse_release_all();
+    } else {
+        bt_mouse_process(bt_mouse, event);
+        consumed = true;
+    }
+
+    return consumed;
+}
+
+void bt_mouse_connection_status_changed_callback(BtStatus status, void* context) {
+    furi_assert(context);
+    BtMouse* bt_mouse = context;
+
+    bt_mouse->connected = (status == BtStatusConnected);
+    if(!bt_mouse->notifications) {
+        tracking_end();
+        return;
+    }
+
+    if(bt_mouse->connected) {
+        notification_internal_message(bt_mouse->notifications, &sequence_set_blue_255);
+        tracking_begin();
+        view_dispatcher_send_custom_event(bt_mouse->view_dispatcher, 0);
+    } else {
+        tracking_end();
+        notification_internal_message(bt_mouse->notifications, &sequence_reset_blue);
+    }
+}
+
+bool bt_mouse_move(int8_t dx, int8_t dy, void* context) {
+    furi_assert(context);
+    BtMouse* bt_mouse = context;
+
+    if(bt_mouse->connected) {
+        furi_mutex_acquire(bt_mouse->mutex, FuriWaitForever);
+        bt_mouse->dx += dx;
+        bt_mouse->dy += dy;
+        furi_mutex_release(bt_mouse->mutex);
+        bt_mouse_notify_event(bt_mouse);
+    }
+
+    return true;
+}
+
+static int8_t clamp(int t) {
+    if(t < -128) {
+        return -128;
+    } else if(t > 127) {
+        return 127;
+    }
+    return t;
+}
+
+static int32_t bt_mouse_thread_callback(void* context) {
+    furi_assert(context);
+    BtMouse* bt_mouse = (BtMouse*)context;
+
+    while(1) {
+        uint32_t flags =
+            furi_thread_flags_wait(BT_MOUSE_FLAG_ALL, FuriFlagWaitAny, FuriWaitForever);
+        if(flags & BT_MOUSE_FLAG_KILL_THREAD) {
+            break;
+        }
+        if(flags & BT_MOUSE_FLAG_INPUT_EVENT) {
+            furi_mutex_acquire(bt_mouse->mutex, FuriWaitForever);
+
+            ButtonEvent event;
+            bool send_buttons = false;
+            if(bt_mouse->qhead != bt_mouse->qtail) {
+                event = bt_mouse->queue[bt_mouse->qhead++];
+                bt_mouse->qhead %= BTN_EVT_QUEUE_SIZE;
+                send_buttons = true;
+            }
+
+            int8_t dx = clamp(bt_mouse->dx);
+            bt_mouse->dx -= dx;
+            int8_t dy = clamp(bt_mouse->dy);
+            bt_mouse->dy -= dy;
+            int8_t wheel = clamp(bt_mouse->wheel);
+            bt_mouse->wheel -= wheel;
+
+            furi_mutex_release(bt_mouse->mutex);
+
+            if(bt_mouse->connected && send_buttons) {
+                if(event.state) {
+                    furi_hal_bt_hid_mouse_press(event.button);
+                } else {
+                    furi_hal_bt_hid_mouse_release(event.button);
+                }
+            }
+
+            if(bt_mouse->connected && (dx != 0 || dy != 0)) {
+                furi_hal_bt_hid_mouse_move(dx, dy);
+            }
+
+            if(bt_mouse->connected && wheel != 0) {
+                furi_hal_bt_hid_mouse_scroll(wheel);
+            }
+        }
+    }
+
+    return 0;
+}
+
+void bt_mouse_thread_start(BtMouse* bt_mouse) {
+    furi_assert(bt_mouse);
+    bt_mouse->mutex = furi_mutex_alloc(FuriMutexTypeNormal);
+    bt_mouse->thread = furi_thread_alloc();
+    furi_thread_set_name(bt_mouse->thread, "BtSender");
+    furi_thread_set_stack_size(bt_mouse->thread, 1024);
+    furi_thread_set_context(bt_mouse->thread, bt_mouse);
+    furi_thread_set_callback(bt_mouse->thread, bt_mouse_thread_callback);
+    furi_thread_start(bt_mouse->thread);
+}
+
+void bt_mouse_thread_stop(BtMouse* bt_mouse) {
+    furi_assert(bt_mouse);
+    FuriThreadId thread_id = furi_thread_get_id(bt_mouse->thread);
+    furi_assert(thread_id);
+    furi_thread_flags_set(thread_id, BT_MOUSE_FLAG_KILL_THREAD);
+    furi_thread_join(bt_mouse->thread);
+    furi_thread_free(bt_mouse->thread);
+    furi_mutex_free(bt_mouse->mutex);
+    bt_mouse->mutex = NULL;
+    bt_mouse->thread = NULL;
+}
+
+void bt_mouse_enter_callback(void* context) {
+    furi_assert(context);
+    BtMouse* bt_mouse = context;
+
+    bt_mouse->bt = furi_record_open(RECORD_BT);
+    bt_mouse->notifications = furi_record_open(RECORD_NOTIFICATION);
+    bt_set_status_changed_callback(
+        bt_mouse->bt, bt_mouse_connection_status_changed_callback, bt_mouse);
+    furi_assert(bt_set_profile(bt_mouse->bt, BtProfileHidKeyboard));
+    furi_hal_bt_start_advertising();
+    bt_mouse_thread_start(bt_mouse);
+}
+
+bool bt_mouse_custom_callback(uint32_t event, void* context) {
+    UNUSED(event);
+    furi_assert(context);
+    BtMouse* bt_mouse = context;
+
+    tracking_step(bt_mouse_move, context);
+    furi_delay_ms(3); // Magic! Removing this will break the buttons
+
+    view_dispatcher_send_custom_event(bt_mouse->view_dispatcher, 0);
+    return true;
+}
+
+void bt_mouse_exit_callback(void* context) {
+    furi_assert(context);
+    BtMouse* bt_mouse = context;
+
+    bt_mouse_thread_stop(bt_mouse);
+    tracking_end();
+    notification_internal_message(bt_mouse->notifications, &sequence_reset_blue);
+
+    furi_hal_bt_stop_advertising();
+    bt_set_profile(bt_mouse->bt, BtProfileSerial);
+
+    furi_record_close(RECORD_NOTIFICATION);
+    bt_mouse->notifications = NULL;
+    furi_record_close(RECORD_BT);
+    bt_mouse->bt = NULL;
+}
+
+BtMouse* bt_mouse_alloc(ViewDispatcher* view_dispatcher) {
+    BtMouse* bt_mouse = malloc(sizeof(BtMouse));
+    memset(bt_mouse, 0, sizeof(BtMouse));
+
+    bt_mouse->view = view_alloc();
+    bt_mouse->view_dispatcher = view_dispatcher;
+    view_set_context(bt_mouse->view, bt_mouse);
+    view_set_draw_callback(bt_mouse->view, bt_mouse_draw_callback);
+    view_set_input_callback(bt_mouse->view, bt_mouse_input_callback);
+    view_set_enter_callback(bt_mouse->view, bt_mouse_enter_callback);
+    view_set_custom_callback(bt_mouse->view, bt_mouse_custom_callback);
+    view_set_exit_callback(bt_mouse->view, bt_mouse_exit_callback);
+    return bt_mouse;
+}
+
+void bt_mouse_free(BtMouse* bt_mouse) {
+    furi_assert(bt_mouse);
+    view_free(bt_mouse->view);
+    free(bt_mouse);
+}
+
+View* bt_mouse_get_view(BtMouse* bt_mouse) {
+    furi_assert(bt_mouse);
+    return bt_mouse->view;
+}

+ 14 - 0
airmouse/views/bt_mouse.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <gui/view.h>
+#include <gui/view_dispatcher.h>
+
+typedef struct BtMouse BtMouse;
+
+BtMouse* bt_mouse_alloc(ViewDispatcher* view_dispatcher);
+
+void bt_mouse_free(BtMouse* bt_mouse);
+
+View* bt_mouse_get_view(BtMouse* bt_mouse);
+
+void bt_mouse_set_connected_status(BtMouse* bt_mouse, bool connected);

+ 69 - 0
airmouse/views/calibration.c

@@ -0,0 +1,69 @@
+#include "calibration.h"
+#include "../tracking/main_loop.h"
+#include "../air_mouse.h"
+
+#include <furi.h>
+#include <gui/elements.h>
+
+struct Calibration {
+    View* view;
+    ViewDispatcher* view_dispatcher;
+};
+
+static void calibration_draw_callback(Canvas* canvas, void* context) {
+    UNUSED(context);
+    canvas_clear(canvas);
+    canvas_set_font(canvas, FontPrimary);
+    canvas_draw_str(canvas, 0, 10, "Calibrating...");
+    canvas_set_font(canvas, FontSecondary);
+    canvas_draw_str(canvas, 0, 63, "Please wait");
+}
+
+void calibration_enter_callback(void* context) {
+    furi_assert(context);
+    Calibration* calibration = context;
+    calibration_begin();
+    view_dispatcher_send_custom_event(calibration->view_dispatcher, 0);
+}
+
+bool calibration_custom_callback(uint32_t event, void* context) {
+    UNUSED(event);
+    furi_assert(context);
+    Calibration* calibration = context;
+
+    if(calibration_step()) {
+        view_dispatcher_switch_to_view(calibration->view_dispatcher, AirMouseViewSubmenu);
+    } else {
+        view_dispatcher_send_custom_event(calibration->view_dispatcher, 0);
+    }
+
+    return true;
+}
+
+void calibration_exit_callback(void* context) {
+    furi_assert(context);
+    calibration_end();
+}
+
+Calibration* calibration_alloc(ViewDispatcher* view_dispatcher) {
+    Calibration* calibration = malloc(sizeof(Calibration));
+    calibration->view = view_alloc();
+    calibration->view_dispatcher = view_dispatcher;
+    view_set_context(calibration->view, calibration);
+    view_set_draw_callback(calibration->view, calibration_draw_callback);
+    view_set_enter_callback(calibration->view, calibration_enter_callback);
+    view_set_custom_callback(calibration->view, calibration_custom_callback);
+    view_set_exit_callback(calibration->view, calibration_exit_callback);
+    return calibration;
+}
+
+void calibration_free(Calibration* calibration) {
+    furi_assert(calibration);
+    view_free(calibration->view);
+    free(calibration);
+}
+
+View* calibration_get_view(Calibration* calibration) {
+    furi_assert(calibration);
+    return calibration->view;
+}

+ 12 - 0
airmouse/views/calibration.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <gui/view.h>
+#include <gui/view_dispatcher.h>
+
+typedef struct Calibration Calibration;
+
+Calibration* calibration_alloc(ViewDispatcher* view_dispatcher);
+
+void calibration_free(Calibration* calibration);
+
+View* calibration_get_view(Calibration* calibration);

+ 139 - 0
airmouse/views/usb_mouse.c

@@ -0,0 +1,139 @@
+#include "usb_mouse.h"
+#include "../tracking/main_loop.h"
+
+#include <furi.h>
+#include <furi_hal_usb.h>
+#include <furi_hal_usb_hid.h>
+#include <gui/elements.h>
+
+struct UsbMouse {
+    View* view;
+    ViewDispatcher* view_dispatcher;
+    FuriHalUsbInterface* usb_mode_prev;
+};
+
+static void usb_mouse_draw_callback(Canvas* canvas, void* context) {
+    UNUSED(context);
+    canvas_clear(canvas);
+    canvas_set_font(canvas, FontPrimary);
+    canvas_draw_str(canvas, 0, 10, "USB Mouse mode");
+    canvas_set_font(canvas, FontSecondary);
+    canvas_draw_str(canvas, 0, 63, "Hold [back] to exit");
+}
+
+#define MOUSE_SCROLL 2
+
+static void usb_mouse_process(UsbMouse* usb_mouse, InputEvent* event) {
+    with_view_model(
+        usb_mouse->view,
+        void* model,
+        {
+            UNUSED(model);
+            if(event->key == InputKeyUp) {
+                if(event->type == InputTypePress) {
+                    furi_hal_hid_mouse_press(HID_MOUSE_BTN_LEFT);
+                } else if(event->type == InputTypeRelease) {
+                    furi_hal_hid_mouse_release(HID_MOUSE_BTN_LEFT);
+                }
+            } else if(event->key == InputKeyDown) {
+                if(event->type == InputTypePress) {
+                    furi_hal_hid_mouse_press(HID_MOUSE_BTN_RIGHT);
+                } else if(event->type == InputTypeRelease) {
+                    furi_hal_hid_mouse_release(HID_MOUSE_BTN_RIGHT);
+                }
+            } else if(event->key == InputKeyOk) {
+                if(event->type == InputTypePress) {
+                    furi_hal_hid_mouse_press(HID_MOUSE_BTN_WHEEL);
+                } else if(event->type == InputTypeRelease) {
+                    furi_hal_hid_mouse_release(HID_MOUSE_BTN_WHEEL);
+                }
+            } else if(event->key == InputKeyRight) {
+                if(event->type == InputTypePress || event->type == InputTypeRepeat) {
+                    furi_hal_hid_mouse_scroll(MOUSE_SCROLL);
+                }
+            } else if(event->key == InputKeyLeft) {
+                if(event->type == InputTypePress || event->type == InputTypeRepeat) {
+                    furi_hal_hid_mouse_scroll(-MOUSE_SCROLL);
+                }
+            }
+        },
+        true);
+}
+
+static bool usb_mouse_input_callback(InputEvent* event, void* context) {
+    furi_assert(context);
+    UsbMouse* usb_mouse = context;
+    bool consumed = false;
+
+    if(event->type == InputTypeLong && event->key == InputKeyBack) {
+        // furi_hal_hid_mouse_release_all();
+    } else {
+        usb_mouse_process(usb_mouse, event);
+        consumed = true;
+    }
+
+    return consumed;
+}
+
+void usb_mouse_enter_callback(void* context) {
+    furi_assert(context);
+    UsbMouse* usb_mouse = context;
+
+    usb_mouse->usb_mode_prev = furi_hal_usb_get_config();
+    furi_hal_usb_unlock();
+    furi_check(furi_hal_usb_set_config(&usb_hid, NULL) == true);
+
+    tracking_begin();
+
+    view_dispatcher_send_custom_event(usb_mouse->view_dispatcher, 0);
+}
+
+bool usb_mouse_move(int8_t dx, int8_t dy, void* context) {
+    UNUSED(context);
+    return furi_hal_hid_mouse_move(dx, dy);
+}
+
+bool usb_mouse_custom_callback(uint32_t event, void* context) {
+    UNUSED(event);
+    furi_assert(context);
+    UsbMouse* usb_mouse = context;
+
+    tracking_step(usb_mouse_move, context);
+    furi_delay_ms(3); // Magic! Removing this will break the buttons
+
+    view_dispatcher_send_custom_event(usb_mouse->view_dispatcher, 0);
+    return true;
+}
+
+void usb_mouse_exit_callback(void* context) {
+    furi_assert(context);
+    UsbMouse* usb_mouse = context;
+
+    tracking_end();
+
+    furi_hal_usb_set_config(usb_mouse->usb_mode_prev, NULL);
+}
+
+UsbMouse* usb_mouse_alloc(ViewDispatcher* view_dispatcher) {
+    UsbMouse* usb_mouse = malloc(sizeof(UsbMouse));
+    usb_mouse->view = view_alloc();
+    usb_mouse->view_dispatcher = view_dispatcher;
+    view_set_context(usb_mouse->view, usb_mouse);
+    view_set_draw_callback(usb_mouse->view, usb_mouse_draw_callback);
+    view_set_input_callback(usb_mouse->view, usb_mouse_input_callback);
+    view_set_enter_callback(usb_mouse->view, usb_mouse_enter_callback);
+    view_set_custom_callback(usb_mouse->view, usb_mouse_custom_callback);
+    view_set_exit_callback(usb_mouse->view, usb_mouse_exit_callback);
+    return usb_mouse;
+}
+
+void usb_mouse_free(UsbMouse* usb_mouse) {
+    furi_assert(usb_mouse);
+    view_free(usb_mouse->view);
+    free(usb_mouse);
+}
+
+View* usb_mouse_get_view(UsbMouse* usb_mouse) {
+    furi_assert(usb_mouse);
+    return usb_mouse->view;
+}

+ 12 - 0
airmouse/views/usb_mouse.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <gui/view.h>
+#include <gui/view_dispatcher.h>
+
+typedef struct UsbMouse UsbMouse;
+
+UsbMouse* usb_mouse_alloc(ViewDispatcher* view_dispatcher);
+
+void usb_mouse_free(UsbMouse* usb_mouse);
+
+View* usb_mouse_get_view(UsbMouse* usb_mouse);