[FL-1506, FL-2197] Power, USB, LED driver improvements (#966)

* Power, USB, LED driver improvements
* u2f hid descriptor fix
* variable_item_list: value alignment fix
* InputTypeRepeat handling in menu/submenu/var_item_list
* lp5562: fix bugs on 400khz i2c
* Scripts: lint in parallel.
* FuriHal: rename some USB structure to match naming convention. Drivers: update magic values in LP5562.

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

applications/bad_usb/bad_usb_app.c

@@ -71,7 +71,7 @@ void bad_usb_app_free(BadUsbApp* app) {
 }
 
 int32_t bad_usb_app(void* p) {
-    UsbInterface* usb_mode_prev = furi_hal_usb_get_config();
+    FuriHalUsbInterface* usb_mode_prev = furi_hal_usb_get_config();
     furi_hal_usb_set_config(&usb_hid);
 
     BadUsbApp* bad_usb_app = bad_usb_app_alloc();

applications/debug_tools/usb_mouse.c

@@ -41,7 +41,7 @@ int32_t usb_mouse_app(void* p) {
     furi_check(event_queue);
     ViewPort* view_port = view_port_alloc();
 
-    UsbInterface* usb_mode_prev = furi_hal_usb_get_config();
+    FuriHalUsbInterface* usb_mode_prev = furi_hal_usb_get_config();
     furi_hal_usb_set_config(&usb_hid);
 
     view_port_draw_callback_set(view_port, usb_mouse_render_callback, NULL);

applications/debug_tools/usb_test.c

@@ -15,6 +15,7 @@ typedef struct {
 typedef enum {
     UsbTestSubmenuIndexEnable,
     UsbTestSubmenuIndexDisable,
+    UsbTestSubmenuIndexRestart,
     UsbTestSubmenuIndexVcpSingle,
     UsbTestSubmenuIndexVcpDual,
     UsbTestSubmenuIndexHid,
@@ -28,6 +29,8 @@ void usb_test_submenu_callback(void* context, uint32_t index) {
         furi_hal_usb_enable();
     } else if(index == UsbTestSubmenuIndexDisable) {
         furi_hal_usb_disable();
+    } else if(index == UsbTestSubmenuIndexRestart) {
+        furi_hal_usb_reinit();
     } else if(index == UsbTestSubmenuIndexVcpSingle) {
         furi_hal_usb_set_config(&usb_cdc_single);
     } else if(index == UsbTestSubmenuIndexVcpDual) {
@@ -60,6 +63,8 @@ UsbTestApp* usb_test_app_alloc() {
         app->submenu, "Enable", UsbTestSubmenuIndexEnable, usb_test_submenu_callback, app);
     submenu_add_item(
         app->submenu, "Disable", UsbTestSubmenuIndexDisable, usb_test_submenu_callback, app);
+    submenu_add_item(
+        app->submenu, "Restart", UsbTestSubmenuIndexRestart, usb_test_submenu_callback, app);
     submenu_add_item(
         app->submenu, "Single VCP", UsbTestSubmenuIndexVcpSingle, usb_test_submenu_callback, app);
     submenu_add_item(

applications/gpio/usb_uart_bridge.c

@@ -154,7 +154,7 @@ static int32_t usb_uart_worker(void* context) {
     furi_thread_set_context(usb_uart->tx_thread, usb_uart);
     furi_thread_set_callback(usb_uart->tx_thread, usb_uart_tx_thread);
 
-    UsbInterface* usb_mode_prev = furi_hal_usb_get_config();
+    FuriHalUsbInterface* usb_mode_prev = furi_hal_usb_get_config();
     usb_uart_vcp_init(usb_uart, usb_uart->cfg.vcp_ch);
     usb_uart_serial_init(usb_uart, usb_uart->cfg.uart_ch);
     usb_uart_set_baudrate(usb_uart, usb_uart->cfg.baudrate);

applications/gui/modules/file_select.c

@@ -77,7 +77,7 @@ static bool file_select_input_callback(InputEvent* event, void* context) {
     FileSelect* file_select = (FileSelect*)context;
     bool consumed = false;
 
-    if(event->type == InputTypeShort) {
+    if((event->type == InputTypeShort) | (event->type == InputTypeRepeat)) {
         if(!file_select->init_completed) {
             if(!file_select_init_inner(file_select)) {
                 file_select->callback(false, file_select->context);

applications/gui/modules/menu.c

@@ -87,6 +87,14 @@ static bool menu_input_callback(InputEvent* event, void* context) {
             consumed = true;
             menu_process_ok(menu);
         }
+    } else if(event->type == InputTypeRepeat) {
+        if(event->key == InputKeyUp) {
+            consumed = true;
+            menu_process_up(menu);
+        } else if(event->key == InputKeyDown) {
+            consumed = true;
+            menu_process_down(menu);
+        }
     }
 
     return consumed;

applications/gui/modules/submenu.c

@@ -106,6 +106,14 @@ static bool submenu_view_input_callback(InputEvent* event, void* context) {
         default:
             break;
         }
+    } else if(event->type == InputTypeRepeat) {
+        if(event->key == InputKeyUp) {
+            consumed = true;
+            submenu_process_up(submenu);
+        } else if(event->key == InputKeyDown) {
+            consumed = true;
+            submenu_process_down(submenu);
+        }
     }
 
     return consumed;

applications/gui/modules/variable_item_list.c

@@ -71,7 +71,13 @@ static void variable_item_list_draw_callback(Canvas* canvas, void* _model) {
                 canvas_draw_str(canvas, 73, item_text_y, "<");
             }
 
-            canvas_draw_str(canvas, 80, item_text_y, string_get_cstr(item->current_value_text));
+            canvas_draw_str_aligned(
+                canvas,
+                (115 + 73) / 2 + 1,
+                item_text_y,
+                AlignCenter,
+                AlignBottom,
+                string_get_cstr(item->current_value_text));
 
             if(item->current_value_index < (item->values_count - 1)) {
                 canvas_draw_str(canvas, 115, item_text_y, ">");
@@ -147,6 +153,27 @@ static bool variable_item_list_input_callback(InputEvent* event, void* context)
         default:
             break;
         }
+    } else if(event->type == InputTypeRepeat) {
+        switch(event->key) {
+        case InputKeyUp:
+            consumed = true;
+            variable_item_list_process_up(variable_item_list);
+            break;
+        case InputKeyDown:
+            consumed = true;
+            variable_item_list_process_down(variable_item_list);
+            break;
+        case InputKeyLeft:
+            consumed = true;
+            variable_item_list_process_left(variable_item_list);
+            break;
+        case InputKeyRight:
+            consumed = true;
+            variable_item_list_process_right(variable_item_list);
+            break;
+        default:
+            break;
+        }
     }
 
     return consumed;

applications/power_observer/power_observer.c

@@ -2,6 +2,11 @@
 #include <furi_hal.h>
 #include <notification/notification_messages.h>
 
+typedef struct {
+    osThreadId_t thread;
+
+} PowerObserverSrv;
+
 const NotificationMessage message_green_110 = {
     .type = NotificationMessageTypeLedGreen,
     .data.led.value = 110,
@@ -14,20 +19,58 @@ static const NotificationSequence sequence_overconsumption = {
     NULL,
 };
 
+typedef enum {
+    EventReset = (1 << 0),
+    EventRequest = (1 << 1),
+} UsbEvent;
+
+static void usb_state_callback(FuriHalUsbStateEvent state, void* context) {
+    PowerObserverSrv* srv = (PowerObserverSrv*)(context);
+    if(state == FuriHalUsbStateEventReset) {
+        osThreadFlagsSet(srv->thread, EventReset);
+    } else if(state == FuriHalUsbStateEventDescriptorRequest) {
+        osThreadFlagsSet(srv->thread, EventRequest);
+    }
+}
+
 int32_t power_observer_srv(void* p) {
     NotificationApp* notifications = furi_record_open("notification");
+    PowerObserverSrv* srv = furi_alloc(sizeof(PowerObserverSrv));
+    srv->thread = osThreadGetId();
 
     const float overconsumption_limit = 0.03f;
+    bool usb_request_pending = false;
+    uint8_t usb_wait_time = 0;
+
+    furi_hal_usb_set_state_callback(usb_state_callback, srv);
 
     while(true) {
-        float current = -furi_hal_power_get_battery_current(FuriHalPowerICFuelGauge);
+        uint32_t flags = osThreadFlagsWait(EventReset | EventRequest, osFlagsWaitAny, 500);
+        if((flags & osFlagsError) == 0) {
+            if(flags & EventReset) {
+                usb_request_pending = true;
+                usb_wait_time = 0;
+            }
+            if(flags & EventRequest) {
+                usb_request_pending = false;
+            }
+        } else if(usb_request_pending) {
+            usb_wait_time++;
+            if(usb_wait_time > 4) {
+                furi_hal_usb_reinit();
+                usb_request_pending = false;
+            }
+        }
 
-        if(current >= overconsumption_limit) {
+        float current = -furi_hal_power_get_battery_current(FuriHalPowerICFuelGauge);
+        if(current > overconsumption_limit) {
             notification_message_block(notifications, &sequence_overconsumption);
         }
-
-        delay(1000);
+        if(furi_hal_power_is_otg_enabled()) {
+            furi_hal_power_check_otg_status();
+        }
     }
 
+    free(srv);
     return 0;
-}
+}

applications/u2f/u2f_hid.c

@@ -190,7 +190,7 @@ static int32_t u2f_hid_worker(void* context) {
 
     FURI_LOG_D(WORKER_TAG, "Init");
 
-    UsbInterface* usb_mode_prev = furi_hal_usb_get_config();
+    FuriHalUsbInterface* usb_mode_prev = furi_hal_usb_get_config();
     furi_hal_usb_set_config(&usb_hid_u2f);
 
     u2f_hid->lock_timer = osTimerNew(u2f_hid_lock_timeout_callback, osTimerOnce, u2f_hid, NULL);

bootloader/targets/f6/furi_hal/furi_hal_i2c.c

@@ -134,3 +134,72 @@ bool furi_hal_i2c_trx(
         return false;
     }
 }
+
+bool furi_hal_i2c_read_reg_8(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint8_t* data,
+    uint32_t timeout) {
+    assert(handle);
+
+    return furi_hal_i2c_trx(handle, i2c_addr, &reg_addr, 1, data, 1, timeout);
+}
+
+bool furi_hal_i2c_read_reg_16(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint16_t* data,
+    uint32_t timeout) {
+    assert(handle);
+
+    uint8_t reg_data[2];
+    bool ret = furi_hal_i2c_trx(handle, i2c_addr, &reg_addr, 1, reg_data, 2, timeout);
+    *data = (reg_data[0] << 8) | (reg_data[1]);
+
+    return ret;
+}
+
+bool furi_hal_i2c_read_mem(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t mem_addr,
+    uint8_t* data,
+    uint8_t len,
+    uint32_t timeout) {
+    assert(handle);
+
+    return furi_hal_i2c_trx(handle, i2c_addr, &mem_addr, 1, data, len, timeout);
+}
+
+bool furi_hal_i2c_write_reg_8(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint8_t data,
+    uint32_t timeout) {
+    assert(handle);
+
+    uint8_t tx_data[2];
+    tx_data[0] = reg_addr;
+    tx_data[1] = data;
+
+    return furi_hal_i2c_tx(handle, i2c_addr, (const uint8_t*)&tx_data, 2, timeout);
+}
+
+bool furi_hal_i2c_write_reg_16(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint16_t data,
+    uint32_t timeout) {
+    assert(handle);
+
+    uint8_t tx_data[3];
+    tx_data[0] = reg_addr;
+    tx_data[1] = (data >> 8) & 0xFF;
+    tx_data[2] = data & 0xFF;
+
+    return furi_hal_i2c_tx(handle, i2c_addr, (const uint8_t*)&tx_data, 3, timeout);
+}

bootloader/targets/f6/furi_hal/furi_hal_i2c.h

@@ -84,6 +84,112 @@ bool furi_hal_i2c_trx(
     const uint8_t rx_size,
     uint32_t timeout);
 
+/** Perform I2C device register read (8-bit)
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      reg_addr register address
+ * @param      data     pointer to register value
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_read_reg_8(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint8_t* data,
+    uint32_t timeout);
+
+/** Perform I2C device register read (16-bit)
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      reg_addr register address
+ * @param      data     pointer to register value
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_read_reg_16(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint16_t* data,
+    uint32_t timeout);
+
+/** Perform I2C device memory read
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      mem_addr memory start address
+ * @param      data     pointer to data buffer
+ * @param      len      size of data buffer
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_read_mem(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t mem_addr,
+    uint8_t* data,
+    uint8_t len,
+    uint32_t timeout);
+
+/** Perform I2C device register write (8-bit)
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      reg_addr register address
+ * @param      data     register value
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_write_reg_8(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint8_t data,
+    uint32_t timeout);
+
+/** Perform I2C device register write (16-bit)
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      reg_addr register address
+ * @param      data     register value
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_write_reg_16(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint16_t data,
+    uint32_t timeout);
+
+/** Perform I2C device memory
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      mem_addr memory start address
+ * @param      data     pointer to data buffer
+ * @param      len      size of data buffer
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_write_mem(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t mem_addr,
+    uint8_t* data,
+    uint8_t len,
+    uint32_t timeout);
+
 #ifdef __cplusplus
 }
 #endif

bootloader/targets/f7/furi_hal/furi_hal_i2c.c

@@ -134,3 +134,72 @@ bool furi_hal_i2c_trx(
         return false;
     }
 }
+
+bool furi_hal_i2c_read_reg_8(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint8_t* data,
+    uint32_t timeout) {
+    assert(handle);
+
+    return furi_hal_i2c_trx(handle, i2c_addr, &reg_addr, 1, data, 1, timeout);
+}
+
+bool furi_hal_i2c_read_reg_16(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint16_t* data,
+    uint32_t timeout) {
+    assert(handle);
+
+    uint8_t reg_data[2];
+    bool ret = furi_hal_i2c_trx(handle, i2c_addr, &reg_addr, 1, reg_data, 2, timeout);
+    *data = (reg_data[0] << 8) | (reg_data[1]);
+
+    return ret;
+}
+
+bool furi_hal_i2c_read_mem(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t mem_addr,
+    uint8_t* data,
+    uint8_t len,
+    uint32_t timeout) {
+    assert(handle);
+
+    return furi_hal_i2c_trx(handle, i2c_addr, &mem_addr, 1, data, len, timeout);
+}
+
+bool furi_hal_i2c_write_reg_8(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint8_t data,
+    uint32_t timeout) {
+    assert(handle);
+
+    uint8_t tx_data[2];
+    tx_data[0] = reg_addr;
+    tx_data[1] = data;
+
+    return furi_hal_i2c_tx(handle, i2c_addr, (const uint8_t*)&tx_data, 2, timeout);
+}
+
+bool furi_hal_i2c_write_reg_16(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint16_t data,
+    uint32_t timeout) {
+    assert(handle);
+
+    uint8_t tx_data[3];
+    tx_data[0] = reg_addr;
+    tx_data[1] = (data >> 8) & 0xFF;
+    tx_data[2] = data & 0xFF;
+
+    return furi_hal_i2c_tx(handle, i2c_addr, (const uint8_t*)&tx_data, 3, timeout);
+}

bootloader/targets/f7/furi_hal/furi_hal_i2c.h

@@ -84,6 +84,112 @@ bool furi_hal_i2c_trx(
     const uint8_t rx_size,
     uint32_t timeout);
 
+/** Perform I2C device register read (8-bit)
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      reg_addr register address
+ * @param      data     pointer to register value
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_read_reg_8(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint8_t* data,
+    uint32_t timeout);
+
+/** Perform I2C device register read (16-bit)
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      reg_addr register address
+ * @param      data     pointer to register value
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_read_reg_16(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint16_t* data,
+    uint32_t timeout);
+
+/** Perform I2C device memory read
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      mem_addr memory start address
+ * @param      data     pointer to data buffer
+ * @param      len      size of data buffer
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_read_mem(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t mem_addr,
+    uint8_t* data,
+    uint8_t len,
+    uint32_t timeout);
+
+/** Perform I2C device register write (8-bit)
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      reg_addr register address
+ * @param      data     register value
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_write_reg_8(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint8_t data,
+    uint32_t timeout);
+
+/** Perform I2C device register write (16-bit)
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      reg_addr register address
+ * @param      data     register value
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_write_reg_16(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t reg_addr,
+    uint16_t data,
+    uint32_t timeout);
+
+/** Perform I2C device memory
+ *
+ * @param      handle   pointer to FuriHalI2cBusHandle instance
+ * @param      i2c_addr I2C slave address
+ * @param      mem_addr memory start address
+ * @param      data     pointer to data buffer
+ * @param      len      size of data buffer
+ * @param      timeout  timeout in ticks
+ *
+ * @return     true on successful transfer, false otherwise
+ */
+bool furi_hal_i2c_write_mem(
+    FuriHalI2cBusHandle* handle,
+    uint8_t i2c_addr,
+    uint8_t mem_addr,
+    uint8_t* data,
+    uint8_t len,
+    uint32_t timeout);
+
 #ifdef __cplusplus
 }
 #endif

firmware/targets/f6/furi_hal/furi_hal_light.c

@@ -28,6 +28,7 @@ void furi_hal_light_init() {
 }
 
 void furi_hal_light_set(Light light, uint8_t value) {
+    uint8_t prev = 0;
     furi_hal_i2c_acquire(&furi_hal_i2c_handle_power);
     switch(light) {
     case LightRed:
@@ -40,10 +41,12 @@ void furi_hal_light_set(Light light, uint8_t value) {
         lp5562_set_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelBlue, value);
         break;
     case LightBacklight:
-        lp5562_set_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelWhite, value);
+        prev = lp5562_get_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelWhite);
+        lp5562_execute_ramp(
+            &furi_hal_i2c_handle_power, LP5562Engine1, LP5562ChannelWhite, prev, value, 100);
         break;
     default:
         break;
     }
     furi_hal_i2c_release(&furi_hal_i2c_handle_power);
-}
+}

firmware/targets/f6/furi_hal/furi_hal_power.c

@@ -216,6 +216,13 @@ bool furi_hal_power_is_otg_enabled() {
     return ret;
 }
 
+void furi_hal_power_check_otg_status() {
+    furi_hal_i2c_acquire(&furi_hal_i2c_handle_power);
+    if(bq25896_check_otg_fault(&furi_hal_i2c_handle_power))
+        bq25896_disable_otg(&furi_hal_i2c_handle_power);
+    furi_hal_i2c_release(&furi_hal_i2c_handle_power);
+}
+
 uint32_t furi_hal_power_get_battery_remaining_capacity() {
     furi_hal_i2c_acquire(&furi_hal_i2c_handle_power);
     uint32_t ret = bq27220_get_remaining_capacity(&furi_hal_i2c_handle_power);
@@ -297,6 +304,7 @@ void furi_hal_power_dump_state() {
            BQ27220_ERROR) {
         printf("Failed to get bq27220 status. Communication error.\r\n");
     } else {
+        // Operation status register
         printf(
             "bq27220: CALMD: %d, SEC0: %d, SEC1: %d, EDV2: %d, VDQ: %d, INITCOMP: %d, SMTH: %d, BTPINT: %d, CFGUPDATE: %d\r\n",
             operation_status.CALMD,

firmware/targets/f6/furi_hal/furi_hal_usb.c

@@ -9,15 +9,19 @@
 
 #define USB_RECONNECT_DELAY 500
 
-static UsbInterface* usb_if_cur;
-static UsbInterface* usb_if_next;
+static FuriHalUsbInterface* usb_if_cur;
+static FuriHalUsbInterface* usb_if_next;
 
 static const struct usb_string_descriptor dev_lang_desc = USB_ARRAY_DESC(USB_LANGID_ENG_US);
 
 static uint32_t ubuf[0x20];
 usbd_device udev;
 
+static FuriHalUsbStateCallback callback;
+static void* cb_ctx;
+
 static usbd_respond usb_descriptor_get(usbd_ctlreq* req, void** address, uint16_t* length);
+static void reset_evt(usbd_device* dev, uint8_t event, uint8_t ep);
 static void susp_evt(usbd_device* dev, uint8_t event, uint8_t ep);
 static void wkup_evt(usbd_device* dev, uint8_t event, uint8_t ep);
 
@@ -25,6 +29,7 @@ struct UsbCfg {
     osTimerId_t reconnect_tmr;
     bool enabled;
     bool connected;
+    bool mode_changing;
 } usb_config;
 
 static void furi_hal_usb_tmr_cb(void* context);
@@ -48,6 +53,7 @@ void furi_hal_usb_init(void) {
     usbd_reg_descr(&udev, usb_descriptor_get);
     usbd_reg_event(&udev, usbd_evt_susp, susp_evt);
     usbd_reg_event(&udev, usbd_evt_wkup, wkup_evt);
+    // Reset callback will be enabled after first mode change to avoid getting false reset events
 
     usb_config.enabled = false;
     usb_config.reconnect_tmr = NULL;
@@ -57,28 +63,49 @@ void furi_hal_usb_init(void) {
     FURI_LOG_I(TAG, "Init OK");
 }
 
-void furi_hal_usb_set_config(UsbInterface* new_if) {
-    if(new_if != usb_if_cur) {
-        if(usb_config.enabled) {
-            usb_if_next = new_if;
-            if(usb_config.reconnect_tmr == NULL)
-                usb_config.reconnect_tmr =
-                    osTimerNew(furi_hal_usb_tmr_cb, osTimerOnce, NULL, NULL);
-            furi_hal_usb_disable();
-            osTimerStart(usb_config.reconnect_tmr, USB_RECONNECT_DELAY);
-        } else {
-            if(usb_if_cur != NULL) usb_if_cur->deinit(&udev);
-            if(new_if != NULL) {
-                new_if->init(&udev, new_if);
-                FURI_LOG_I(TAG, "USB mode change");
-                usb_config.enabled = true;
-                usb_if_cur = new_if;
-            }
+void furi_hal_usb_set_config(FuriHalUsbInterface* new_if) {
+    if((new_if != usb_if_cur) && (usb_config.enabled)) { // Interface mode change - first stage
+        usb_config.mode_changing = true;
+        usb_if_next = new_if;
+        if(usb_config.reconnect_tmr == NULL)
+            usb_config.reconnect_tmr = osTimerNew(furi_hal_usb_tmr_cb, osTimerOnce, NULL, NULL);
+        furi_hal_usb_disable();
+        usb_config.mode_changing = true;
+        osTimerStart(usb_config.reconnect_tmr, USB_RECONNECT_DELAY);
+    } else if(
+        (usb_config.mode_changing) &&
+        (usb_if_next != new_if)) { // Last interface mode change wasn't completed
+        osTimerStop(usb_config.reconnect_tmr);
+        usb_if_next = new_if;
+        osTimerStart(usb_config.reconnect_tmr, USB_RECONNECT_DELAY);
+    } else { // Interface mode change - second stage
+        if(usb_if_cur != NULL) usb_if_cur->deinit(&udev);
+        if(new_if != NULL) {
+            new_if->init(&udev, new_if);
+            usbd_reg_event(&udev, usbd_evt_reset, reset_evt);
+            FURI_LOG_I(TAG, "USB Mode change done");
+            usb_config.enabled = true;
+            usb_if_cur = new_if;
+            usb_config.mode_changing = false;
         }
     }
 }
 
-UsbInterface* furi_hal_usb_get_config() {
+void furi_hal_usb_reinit() {
+    // Temporary disable callback to avoid getting false reset events
+    usbd_reg_event(&udev, usbd_evt_reset, NULL);
+    FURI_LOG_I(TAG, "USB Reinit");
+    furi_hal_usb_disable();
+    usbd_enable(&udev, false);
+    usbd_enable(&udev, true);
+    if(usb_config.reconnect_tmr == NULL)
+        usb_config.reconnect_tmr = osTimerNew(furi_hal_usb_tmr_cb, osTimerOnce, NULL, NULL);
+    usb_config.mode_changing = true;
+    usb_if_next = usb_if_cur;
+    osTimerStart(usb_config.reconnect_tmr, USB_RECONNECT_DELAY);
+}
+
+FuriHalUsbInterface* furi_hal_usb_get_config() {
     return usb_if_cur;
 }
 
@@ -113,6 +140,9 @@ static usbd_respond usb_descriptor_get(usbd_ctlreq* req, void** address, uint16_
 
     switch(dtype) {
     case USB_DTYPE_DEVICE:
+        if(callback != NULL) {
+            callback(FuriHalUsbStateEventDescriptorRequest, cb_ctx);
+        }
         desc = usb_if_cur->dev_descr;
         break;
     case USB_DTYPE_CONFIGURATION:
@@ -122,11 +152,11 @@ static usbd_respond usb_descriptor_get(usbd_ctlreq* req, void** address, uint16_
     case USB_DTYPE_STRING:
         if(dnumber == UsbDevLang) {
             desc = &dev_lang_desc;
-        } else if(dnumber == UsbDevManuf) {
+        } else if((dnumber == UsbDevManuf) && (usb_if_cur->str_manuf_descr != NULL)) {
             desc = usb_if_cur->str_manuf_descr;
-        } else if(dnumber == UsbDevProduct) {
+        } else if((dnumber == UsbDevProduct) && (usb_if_cur->str_prod_descr != NULL)) {
             desc = usb_if_cur->str_prod_descr;
-        } else if(dnumber == UsbDevSerial) {
+        } else if((dnumber == UsbDevSerial) && (usb_if_cur->str_serial_descr != NULL)) {
             desc = usb_if_cur->str_serial_descr;
         } else
             return usbd_fail;
@@ -144,11 +174,25 @@ static usbd_respond usb_descriptor_get(usbd_ctlreq* req, void** address, uint16_
     return usbd_ack;
 }
 
+void furi_hal_usb_set_state_callback(FuriHalUsbStateCallback cb, void* ctx) {
+    callback = cb;
+    cb_ctx = ctx;
+}
+
+static void reset_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
+    if(callback != NULL) {
+        callback(FuriHalUsbStateEventReset, cb_ctx);
+    }
+}
+
 static void susp_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
     if((usb_if_cur != NULL) && (usb_config.connected == true)) {
         usb_config.connected = false;
         usb_if_cur->suspend(&udev);
     }
+    if(callback != NULL) {
+        callback(FuriHalUsbStateEventSuspend, cb_ctx);
+    }
 }
 
 static void wkup_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
@@ -156,4 +200,7 @@ static void wkup_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
         usb_config.connected = true;
         usb_if_cur->wakeup(&udev);
     }
+    if(callback != NULL) {
+        callback(FuriHalUsbStateEventWakeup, cb_ctx);
+    }
 }

firmware/targets/f6/furi_hal/furi_hal_usb_cdc.c

@@ -385,7 +385,7 @@ static const struct CdcConfigDescriptorDual
 static struct usb_cdc_line_coding cdc_config[IF_NUM_MAX] = {};
 static uint8_t cdc_ctrl_line_state[IF_NUM_MAX];
 
-static void cdc_init(usbd_device* dev, UsbInterface* intf);
+static void cdc_init(usbd_device* dev, FuriHalUsbInterface* intf);
 static void cdc_deinit(usbd_device* dev);
 static void cdc_on_wakeup(usbd_device* dev);
 static void cdc_on_suspend(usbd_device* dev);
@@ -393,12 +393,12 @@ static void cdc_on_suspend(usbd_device* dev);
 static usbd_respond cdc_ep_config(usbd_device* dev, uint8_t cfg);
 static usbd_respond cdc_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_callback* callback);
 static usbd_device* usb_dev;
-static UsbInterface* cdc_if_cur = NULL;
+static FuriHalUsbInterface* cdc_if_cur = NULL;
 static bool connected = false;
 static CdcCallbacks* callbacks[IF_NUM_MAX] = {NULL};
 static void* cb_ctx[IF_NUM_MAX];
 
-UsbInterface usb_cdc_single = {
+FuriHalUsbInterface usb_cdc_single = {
     .init = cdc_init,
     .deinit = cdc_deinit,
     .wakeup = cdc_on_wakeup,
@@ -413,7 +413,7 @@ UsbInterface usb_cdc_single = {
     .cfg_descr = (void*)&cdc_cfg_desc_single,
 };
 
-UsbInterface usb_cdc_dual = {
+FuriHalUsbInterface usb_cdc_dual = {
     .init = cdc_init,
     .deinit = cdc_deinit,
     .wakeup = cdc_on_wakeup,
@@ -428,7 +428,7 @@ UsbInterface usb_cdc_dual = {
     .cfg_descr = (void*)&cdc_cfg_desc_dual,
 };
 
-static void cdc_init(usbd_device* dev, UsbInterface* intf) {
+static void cdc_init(usbd_device* dev, FuriHalUsbInterface* intf) {
     usb_dev = dev;
     cdc_if_cur = intf;
 

firmware/targets/f6/furi_hal/furi_hal_usb_hid.c

@@ -236,7 +236,7 @@ static struct HidReport {
     struct HidReportConsumer consumer;
 } __attribute__((packed)) hid_report;
 
-static void hid_init(usbd_device* dev, UsbInterface* intf);
+static void hid_init(usbd_device* dev, FuriHalUsbInterface* intf);
 static void hid_deinit(usbd_device* dev);
 static void hid_on_wakeup(usbd_device* dev);
 static void hid_on_suspend(usbd_device* dev);
@@ -348,7 +348,7 @@ bool furi_hal_hid_consumer_key_release(uint16_t button) {
     return hid_send_report(ReportIdConsumer);
 }
 
-UsbInterface usb_hid = {
+FuriHalUsbInterface usb_hid = {
     .init = hid_init,
     .deinit = hid_deinit,
     .wakeup = hid_on_wakeup,
@@ -363,7 +363,7 @@ UsbInterface usb_hid = {
     .cfg_descr = (void*)&hid_cfg_desc,
 };
 
-static void hid_init(usbd_device* dev, UsbInterface* intf) {
+static void hid_init(usbd_device* dev, FuriHalUsbInterface* intf) {
     if(hid_semaphore == NULL) hid_semaphore = osSemaphoreNew(1, 1, NULL);
     usb_dev = dev;
     hid_report.keyboard.report_id = ReportIdKeyboard;

firmware/targets/f6/furi_hal/furi_hal_usb_u2f.c

@@ -48,8 +48,7 @@ static const uint8_t hid_u2f_report_desc[] = {
 };
 
 static const struct usb_string_descriptor dev_manuf_desc = USB_STRING_DESC("Flipper Devices Inc.");
-static const struct usb_string_descriptor dev_prod_desc = USB_STRING_DESC("U2F Token test");
-static const struct usb_string_descriptor dev_serial_desc = USB_STRING_DESC("TODO: serial");
+static const struct usb_string_descriptor dev_prod_desc = USB_STRING_DESC("U2F Token");
 
 /* Device descriptor */
 static const struct usb_device_descriptor hid_u2f_device_desc = {
@@ -65,7 +64,7 @@ static const struct usb_device_descriptor hid_u2f_device_desc = {
     .bcdDevice = VERSION_BCD(1, 0, 0),
     .iManufacturer = UsbDevManuf,
     .iProduct = UsbDevProduct,
-    .iSerialNumber = UsbDevSerial,
+    .iSerialNumber = 0,
     .bNumConfigurations = 1,
 };
 
@@ -138,7 +137,7 @@ static const struct HidConfigDescriptor hid_u2f_cfg_desc = {
         },
 };
 
-static void hid_u2f_init(usbd_device* dev, UsbInterface* intf);
+static void hid_u2f_init(usbd_device* dev, FuriHalUsbInterface* intf);
 static void hid_u2f_deinit(usbd_device* dev);
 static void hid_u2f_on_wakeup(usbd_device* dev);
 static void hid_u2f_on_suspend(usbd_device* dev);
@@ -171,7 +170,7 @@ void furi_hal_hid_u2f_set_callback(HidU2fCallback cb, void* ctx) {
     }
 }
 
-UsbInterface usb_hid_u2f = {
+FuriHalUsbInterface usb_hid_u2f = {
     .init = hid_u2f_init,
     .deinit = hid_u2f_deinit,
     .wakeup = hid_u2f_on_wakeup,
@@ -181,12 +180,12 @@ UsbInterface usb_hid_u2f = {
 
     .str_manuf_descr = (void*)&dev_manuf_desc,
     .str_prod_descr = (void*)&dev_prod_desc,
-    .str_serial_descr = (void*)&dev_serial_desc,
+    .str_serial_descr = NULL,
 
     .cfg_descr = (void*)&hid_u2f_cfg_desc,
 };
 
-static void hid_u2f_init(usbd_device* dev, UsbInterface* intf) {
+static void hid_u2f_init(usbd_device* dev, FuriHalUsbInterface* intf) {
     if(hid_u2f_semaphore == NULL) hid_u2f_semaphore = osSemaphoreNew(1, 1, NULL);
     usb_dev = dev;
 

firmware/targets/f7/furi_hal/furi_hal_light.c

@@ -28,6 +28,7 @@ void furi_hal_light_init() {
 }
 
 void furi_hal_light_set(Light light, uint8_t value) {
+    uint8_t prev = 0;
     furi_hal_i2c_acquire(&furi_hal_i2c_handle_power);
     switch(light) {
     case LightRed:
@@ -40,10 +41,12 @@ void furi_hal_light_set(Light light, uint8_t value) {
         lp5562_set_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelBlue, value);
         break;
     case LightBacklight:
-        lp5562_set_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelWhite, value);
+        prev = lp5562_get_channel_value(&furi_hal_i2c_handle_power, LP5562ChannelWhite);
+        lp5562_execute_ramp(
+            &furi_hal_i2c_handle_power, LP5562Engine1, LP5562ChannelWhite, prev, value, 100);
         break;
     default:
         break;
     }
     furi_hal_i2c_release(&furi_hal_i2c_handle_power);
-}
+}

firmware/targets/f7/furi_hal/furi_hal_power.c

@@ -216,6 +216,13 @@ bool furi_hal_power_is_otg_enabled() {
     return ret;
 }
 
+void furi_hal_power_check_otg_status() {
+    furi_hal_i2c_acquire(&furi_hal_i2c_handle_power);
+    if(bq25896_check_otg_fault(&furi_hal_i2c_handle_power))
+        bq25896_disable_otg(&furi_hal_i2c_handle_power);
+    furi_hal_i2c_release(&furi_hal_i2c_handle_power);
+}
+
 uint32_t furi_hal_power_get_battery_remaining_capacity() {
     furi_hal_i2c_acquire(&furi_hal_i2c_handle_power);
     uint32_t ret = bq27220_get_remaining_capacity(&furi_hal_i2c_handle_power);
@@ -297,6 +304,7 @@ void furi_hal_power_dump_state() {
            BQ27220_ERROR) {
         printf("Failed to get bq27220 status. Communication error.\r\n");
     } else {
+        // Operation status register
         printf(
             "bq27220: CALMD: %d, SEC0: %d, SEC1: %d, EDV2: %d, VDQ: %d, INITCOMP: %d, SMTH: %d, BTPINT: %d, CFGUPDATE: %d\r\n",
             operation_status.CALMD,

firmware/targets/f7/furi_hal/furi_hal_usb.c

@@ -9,15 +9,19 @@
 
 #define USB_RECONNECT_DELAY 500
 
-static UsbInterface* usb_if_cur;
-static UsbInterface* usb_if_next;
+static FuriHalUsbInterface* usb_if_cur;
+static FuriHalUsbInterface* usb_if_next;
 
 static const struct usb_string_descriptor dev_lang_desc = USB_ARRAY_DESC(USB_LANGID_ENG_US);
 
 static uint32_t ubuf[0x20];
 usbd_device udev;
 
+static FuriHalUsbStateCallback callback;
+static void* cb_ctx;
+
 static usbd_respond usb_descriptor_get(usbd_ctlreq* req, void** address, uint16_t* length);
+static void reset_evt(usbd_device* dev, uint8_t event, uint8_t ep);
 static void susp_evt(usbd_device* dev, uint8_t event, uint8_t ep);
 static void wkup_evt(usbd_device* dev, uint8_t event, uint8_t ep);
 
@@ -25,6 +29,7 @@ struct UsbCfg {
     osTimerId_t reconnect_tmr;
     bool enabled;
     bool connected;
+    bool mode_changing;
 } usb_config;
 
 static void furi_hal_usb_tmr_cb(void* context);
@@ -48,6 +53,7 @@ void furi_hal_usb_init(void) {
     usbd_reg_descr(&udev, usb_descriptor_get);
     usbd_reg_event(&udev, usbd_evt_susp, susp_evt);
     usbd_reg_event(&udev, usbd_evt_wkup, wkup_evt);
+    // Reset callback will be enabled after first mode change to avoid getting false reset events
 
     usb_config.enabled = false;
     usb_config.reconnect_tmr = NULL;
@@ -57,28 +63,49 @@ void furi_hal_usb_init(void) {
     FURI_LOG_I(TAG, "Init OK");
 }
 
-void furi_hal_usb_set_config(UsbInterface* new_if) {
-    if(new_if != usb_if_cur) {
-        if(usb_config.enabled) {
-            usb_if_next = new_if;
-            if(usb_config.reconnect_tmr == NULL)
-                usb_config.reconnect_tmr =
-                    osTimerNew(furi_hal_usb_tmr_cb, osTimerOnce, NULL, NULL);
-            furi_hal_usb_disable();
-            osTimerStart(usb_config.reconnect_tmr, USB_RECONNECT_DELAY);
-        } else {
-            if(usb_if_cur != NULL) usb_if_cur->deinit(&udev);
-            if(new_if != NULL) {
-                new_if->init(&udev, new_if);
-                FURI_LOG_I(TAG, "USB mode change");
-                usb_config.enabled = true;
-                usb_if_cur = new_if;
-            }
+void furi_hal_usb_set_config(FuriHalUsbInterface* new_if) {
+    if((new_if != usb_if_cur) && (usb_config.enabled)) { // Interface mode change - first stage
+        usb_config.mode_changing = true;
+        usb_if_next = new_if;
+        if(usb_config.reconnect_tmr == NULL)
+            usb_config.reconnect_tmr = osTimerNew(furi_hal_usb_tmr_cb, osTimerOnce, NULL, NULL);
+        furi_hal_usb_disable();
+        usb_config.mode_changing = true;
+        osTimerStart(usb_config.reconnect_tmr, USB_RECONNECT_DELAY);
+    } else if(
+        (usb_config.mode_changing) &&
+        (usb_if_next != new_if)) { // Last interface mode change wasn't completed
+        osTimerStop(usb_config.reconnect_tmr);
+        usb_if_next = new_if;
+        osTimerStart(usb_config.reconnect_tmr, USB_RECONNECT_DELAY);
+    } else { // Interface mode change - second stage
+        if(usb_if_cur != NULL) usb_if_cur->deinit(&udev);
+        if(new_if != NULL) {
+            new_if->init(&udev, new_if);
+            usbd_reg_event(&udev, usbd_evt_reset, reset_evt);
+            FURI_LOG_I(TAG, "USB Mode change done");
+            usb_config.enabled = true;
+            usb_if_cur = new_if;
+            usb_config.mode_changing = false;
         }
     }
 }
 
-UsbInterface* furi_hal_usb_get_config() {
+void furi_hal_usb_reinit() {
+    // Temporary disable callback to avoid getting false reset events
+    usbd_reg_event(&udev, usbd_evt_reset, NULL);
+    FURI_LOG_I(TAG, "USB Reinit");
+    furi_hal_usb_disable();
+    usbd_enable(&udev, false);
+    usbd_enable(&udev, true);
+    if(usb_config.reconnect_tmr == NULL)
+        usb_config.reconnect_tmr = osTimerNew(furi_hal_usb_tmr_cb, osTimerOnce, NULL, NULL);
+    usb_config.mode_changing = true;
+    usb_if_next = usb_if_cur;
+    osTimerStart(usb_config.reconnect_tmr, USB_RECONNECT_DELAY);
+}
+
+FuriHalUsbInterface* furi_hal_usb_get_config() {
     return usb_if_cur;
 }
 
@@ -113,6 +140,9 @@ static usbd_respond usb_descriptor_get(usbd_ctlreq* req, void** address, uint16_
 
     switch(dtype) {
     case USB_DTYPE_DEVICE:
+        if(callback != NULL) {
+            callback(FuriHalUsbStateEventDescriptorRequest, cb_ctx);
+        }
         desc = usb_if_cur->dev_descr;
         break;
     case USB_DTYPE_CONFIGURATION:
@@ -122,11 +152,11 @@ static usbd_respond usb_descriptor_get(usbd_ctlreq* req, void** address, uint16_
     case USB_DTYPE_STRING:
         if(dnumber == UsbDevLang) {
             desc = &dev_lang_desc;
-        } else if(dnumber == UsbDevManuf) {
+        } else if((dnumber == UsbDevManuf) && (usb_if_cur->str_manuf_descr != NULL)) {
             desc = usb_if_cur->str_manuf_descr;
-        } else if(dnumber == UsbDevProduct) {
+        } else if((dnumber == UsbDevProduct) && (usb_if_cur->str_prod_descr != NULL)) {
             desc = usb_if_cur->str_prod_descr;
-        } else if(dnumber == UsbDevSerial) {
+        } else if((dnumber == UsbDevSerial) && (usb_if_cur->str_serial_descr != NULL)) {
             desc = usb_if_cur->str_serial_descr;
         } else
             return usbd_fail;
@@ -144,11 +174,25 @@ static usbd_respond usb_descriptor_get(usbd_ctlreq* req, void** address, uint16_
     return usbd_ack;
 }
 
+void furi_hal_usb_set_state_callback(FuriHalUsbStateCallback cb, void* ctx) {
+    callback = cb;
+    cb_ctx = ctx;
+}
+
+static void reset_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
+    if(callback != NULL) {
+        callback(FuriHalUsbStateEventReset, cb_ctx);
+    }
+}
+
 static void susp_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
     if((usb_if_cur != NULL) && (usb_config.connected == true)) {
         usb_config.connected = false;
         usb_if_cur->suspend(&udev);
     }
+    if(callback != NULL) {
+        callback(FuriHalUsbStateEventSuspend, cb_ctx);
+    }
 }
 
 static void wkup_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
@@ -156,4 +200,7 @@ static void wkup_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
         usb_config.connected = true;
         usb_if_cur->wakeup(&udev);
     }
+    if(callback != NULL) {
+        callback(FuriHalUsbStateEventWakeup, cb_ctx);
+    }
 }

firmware/targets/f7/furi_hal/furi_hal_usb_cdc.c

@@ -385,7 +385,7 @@ static const struct CdcConfigDescriptorDual
 static struct usb_cdc_line_coding cdc_config[IF_NUM_MAX] = {};
 static uint8_t cdc_ctrl_line_state[IF_NUM_MAX];
 
-static void cdc_init(usbd_device* dev, UsbInterface* intf);
+static void cdc_init(usbd_device* dev, FuriHalUsbInterface* intf);
 static void cdc_deinit(usbd_device* dev);
 static void cdc_on_wakeup(usbd_device* dev);
 static void cdc_on_suspend(usbd_device* dev);
@@ -393,12 +393,12 @@ static void cdc_on_suspend(usbd_device* dev);
 static usbd_respond cdc_ep_config(usbd_device* dev, uint8_t cfg);
 static usbd_respond cdc_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_callback* callback);
 static usbd_device* usb_dev;
-static UsbInterface* cdc_if_cur = NULL;
+static FuriHalUsbInterface* cdc_if_cur = NULL;
 static bool connected = false;
 static CdcCallbacks* callbacks[IF_NUM_MAX] = {NULL};
 static void* cb_ctx[IF_NUM_MAX];
 
-UsbInterface usb_cdc_single = {
+FuriHalUsbInterface usb_cdc_single = {
     .init = cdc_init,
     .deinit = cdc_deinit,
     .wakeup = cdc_on_wakeup,
@@ -413,7 +413,7 @@ UsbInterface usb_cdc_single = {
     .cfg_descr = (void*)&cdc_cfg_desc_single,
 };
 
-UsbInterface usb_cdc_dual = {
+FuriHalUsbInterface usb_cdc_dual = {
     .init = cdc_init,
     .deinit = cdc_deinit,
     .wakeup = cdc_on_wakeup,
@@ -428,7 +428,7 @@ UsbInterface usb_cdc_dual = {
     .cfg_descr = (void*)&cdc_cfg_desc_dual,
 };
 
-static void cdc_init(usbd_device* dev, UsbInterface* intf) {
+static void cdc_init(usbd_device* dev, FuriHalUsbInterface* intf) {
     usb_dev = dev;
     cdc_if_cur = intf;
 

firmware/targets/f7/furi_hal/furi_hal_usb_hid.c

@@ -236,7 +236,7 @@ static struct HidReport {
     struct HidReportConsumer consumer;
 } __attribute__((packed)) hid_report;
 
-static void hid_init(usbd_device* dev, UsbInterface* intf);
+static void hid_init(usbd_device* dev, FuriHalUsbInterface* intf);
 static void hid_deinit(usbd_device* dev);
 static void hid_on_wakeup(usbd_device* dev);
 static void hid_on_suspend(usbd_device* dev);
@@ -348,7 +348,7 @@ bool furi_hal_hid_consumer_key_release(uint16_t button) {
     return hid_send_report(ReportIdConsumer);
 }
 
-UsbInterface usb_hid = {
+FuriHalUsbInterface usb_hid = {
     .init = hid_init,
     .deinit = hid_deinit,
     .wakeup = hid_on_wakeup,
@@ -363,7 +363,7 @@ UsbInterface usb_hid = {
     .cfg_descr = (void*)&hid_cfg_desc,
 };
 
-static void hid_init(usbd_device* dev, UsbInterface* intf) {
+static void hid_init(usbd_device* dev, FuriHalUsbInterface* intf) {
     if(hid_semaphore == NULL) hid_semaphore = osSemaphoreNew(1, 1, NULL);
     usb_dev = dev;
     hid_report.keyboard.report_id = ReportIdKeyboard;

firmware/targets/f7/furi_hal/furi_hal_usb_u2f.c

@@ -48,8 +48,7 @@ static const uint8_t hid_u2f_report_desc[] = {
 };
 
 static const struct usb_string_descriptor dev_manuf_desc = USB_STRING_DESC("Flipper Devices Inc.");
-static const struct usb_string_descriptor dev_prod_desc = USB_STRING_DESC("U2F Token test");
-static const struct usb_string_descriptor dev_serial_desc = USB_STRING_DESC("TODO: serial");
+static const struct usb_string_descriptor dev_prod_desc = USB_STRING_DESC("U2F Token");
 
 /* Device descriptor */
 static const struct usb_device_descriptor hid_u2f_device_desc = {
@@ -65,7 +64,7 @@ static const struct usb_device_descriptor hid_u2f_device_desc = {
     .bcdDevice = VERSION_BCD(1, 0, 0),
     .iManufacturer = UsbDevManuf,
     .iProduct = UsbDevProduct,
-    .iSerialNumber = UsbDevSerial,
+    .iSerialNumber = 0,
     .bNumConfigurations = 1,
 };
 
@@ -138,7 +137,7 @@ static const struct HidConfigDescriptor hid_u2f_cfg_desc = {
         },
 };
 
-static void hid_u2f_init(usbd_device* dev, UsbInterface* intf);
+static void hid_u2f_init(usbd_device* dev, FuriHalUsbInterface* intf);
 static void hid_u2f_deinit(usbd_device* dev);
 static void hid_u2f_on_wakeup(usbd_device* dev);
 static void hid_u2f_on_suspend(usbd_device* dev);
@@ -171,7 +170,7 @@ void furi_hal_hid_u2f_set_callback(HidU2fCallback cb, void* ctx) {
     }
 }
 
-UsbInterface usb_hid_u2f = {
+FuriHalUsbInterface usb_hid_u2f = {
     .init = hid_u2f_init,
     .deinit = hid_u2f_deinit,
     .wakeup = hid_u2f_on_wakeup,
@@ -181,12 +180,12 @@ UsbInterface usb_hid_u2f = {
 
     .str_manuf_descr = (void*)&dev_manuf_desc,
     .str_prod_descr = (void*)&dev_prod_desc,
-    .str_serial_descr = (void*)&dev_serial_desc,
+    .str_serial_descr = NULL,
 
     .cfg_descr = (void*)&hid_u2f_cfg_desc,
 };
 
-static void hid_u2f_init(usbd_device* dev, UsbInterface* intf) {
+static void hid_u2f_init(usbd_device* dev, FuriHalUsbInterface* intf) {
     if(hid_u2f_semaphore == NULL) hid_u2f_semaphore = osSemaphoreNew(1, 1, NULL);
     usb_dev = dev;
 

firmware/targets/furi_hal_include/furi_hal_power.h

@@ -91,6 +91,10 @@ void furi_hal_power_enable_otg();
  */
 void furi_hal_power_disable_otg();
 
+/** Check OTG status and disable it if falt happened
+ */
+void furi_hal_power_check_otg_status();
+
 /** Get OTG status
  *
  * @return     true if enabled

firmware/targets/furi_hal_include/furi_hal_usb.h

@@ -2,10 +2,10 @@
 
 #include "usb.h"
 
-typedef struct UsbInterface UsbInterface;
+typedef struct FuriHalUsbInterface FuriHalUsbInterface;
 
-struct UsbInterface {
-    void (*init)(usbd_device* dev, UsbInterface* intf);
+struct FuriHalUsbInterface {
+    void (*init)(usbd_device* dev, FuriHalUsbInterface* intf);
     void (*deinit)(usbd_device* dev);
     void (*wakeup)(usbd_device* dev);
     void (*suspend)(usbd_device* dev);
@@ -20,10 +20,19 @@ struct UsbInterface {
 };
 
 /** USB device interface modes */
-extern UsbInterface usb_cdc_single;
-extern UsbInterface usb_cdc_dual;
-extern UsbInterface usb_hid;
-extern UsbInterface usb_hid_u2f;
+extern FuriHalUsbInterface usb_cdc_single;
+extern FuriHalUsbInterface usb_cdc_dual;
+extern FuriHalUsbInterface usb_hid;
+extern FuriHalUsbInterface usb_hid_u2f;
+
+typedef enum {
+    FuriHalUsbStateEventReset,
+    FuriHalUsbStateEventWakeup,
+    FuriHalUsbStateEventSuspend,
+    FuriHalUsbStateEventDescriptorRequest,
+} FuriHalUsbStateEvent;
+
+typedef void (*FuriHalUsbStateCallback)(FuriHalUsbStateEvent state, void* context);
 
 /** USB device low-level initialization
  */
@@ -33,13 +42,13 @@ void furi_hal_usb_init();
  *
  * @param      mode new USB device mode
  */
-void furi_hal_usb_set_config(UsbInterface* new_if);
+void furi_hal_usb_set_config(FuriHalUsbInterface* new_if);
 
 /** Get USB device configuration
  *
  * @return    current USB device mode
  */
-UsbInterface* furi_hal_usb_get_config();
+FuriHalUsbInterface* furi_hal_usb_get_config();
 
 /** Disable USB device
  */
@@ -48,3 +57,11 @@ void furi_hal_usb_disable();
 /** Enable USB device
  */
 void furi_hal_usb_enable();
+
+/** Set USB state callback
+ */
+void furi_hal_usb_set_state_callback(FuriHalUsbStateCallback cb, void* ctx);
+
+/** Restart USB device
+ */
+void furi_hal_usb_reinit();

lib/drivers/bq25896.c

@@ -10,19 +10,6 @@ uint8_t bit_reverse(uint8_t b) {
     return b;
 }
 
-bool bq25896_read(FuriHalI2cBusHandle* handle, uint8_t address, uint8_t* data, size_t size) {
-    return furi_hal_i2c_trx(handle, BQ25896_ADDRESS, &address, 1, data, size, BQ25896_I2C_TIMEOUT);
-}
-
-bool bq25896_read_reg(FuriHalI2cBusHandle* handle, uint8_t address, uint8_t* data) {
-    return bq25896_read(handle, address, data, 1);
-}
-
-bool bq25896_write_reg(FuriHalI2cBusHandle* handle, uint8_t address, uint8_t* data) {
-    uint8_t buffer[2] = {address, *data};
-    return furi_hal_i2c_tx(handle, BQ25896_ADDRESS, buffer, 2, BQ25896_I2C_TIMEOUT);
-}
-
 typedef struct {
     REG00 r00;
     REG01 r01;
@@ -51,60 +38,101 @@ static bq25896_regs_t bq25896_regs;
 
 void bq25896_init(FuriHalI2cBusHandle* handle) {
     bq25896_regs.r14.REG_RST = 1;
-    bq25896_write_reg(handle, 0x14, (uint8_t*)&bq25896_regs.r14);
+    furi_hal_i2c_write_reg_8(
+        handle, BQ25896_ADDRESS, 0x14, *(uint8_t*)&bq25896_regs.r14, BQ25896_I2C_TIMEOUT);
 
     // Readout all registers
-    bq25896_read(handle, 0x00, (uint8_t*)&bq25896_regs, sizeof(bq25896_regs));
+    furi_hal_i2c_read_mem(
+        handle,
+        BQ25896_ADDRESS,
+        0x00,
+        (uint8_t*)&bq25896_regs,
+        sizeof(bq25896_regs),
+        BQ25896_I2C_TIMEOUT);
 
     // Poll ADC forever
     bq25896_regs.r02.CONV_START = 1;
     bq25896_regs.r02.CONV_RATE = 1;
-    bq25896_write_reg(handle, 0x02, (uint8_t*)&bq25896_regs.r02);
+    furi_hal_i2c_write_reg_8(
+        handle, BQ25896_ADDRESS, 0x02, *(uint8_t*)&bq25896_regs.r02, BQ25896_I2C_TIMEOUT);
 
     bq25896_regs.r07.WATCHDOG = WatchdogDisable;
-    bq25896_write_reg(handle, 0x07, (uint8_t*)&bq25896_regs.r07);
+    furi_hal_i2c_write_reg_8(
+        handle, BQ25896_ADDRESS, 0x07, *(uint8_t*)&bq25896_regs.r07, BQ25896_I2C_TIMEOUT);
+
+    // OTG power configuration
+    bq25896_regs.r0A.BOOSTV = 0x8; // BOOST Voltage: 5.062V
+    bq25896_regs.r0A.BOOST_LIM = BOOST_LIM_1400; // BOOST Current limit: 1.4A
+    furi_hal_i2c_write_reg_8(
+        handle, BQ25896_ADDRESS, 0x0A, *(uint8_t*)&bq25896_regs.r0A, BQ25896_I2C_TIMEOUT);
 
-    bq25896_read(handle, 0x00, (uint8_t*)&bq25896_regs, sizeof(bq25896_regs));
+    furi_hal_i2c_read_mem(
+        handle,
+        BQ25896_ADDRESS,
+        0x00,
+        (uint8_t*)&bq25896_regs,
+        sizeof(bq25896_regs),
+        BQ25896_I2C_TIMEOUT);
 }
 
 void bq25896_poweroff(FuriHalI2cBusHandle* handle) {
     bq25896_regs.r09.BATFET_DIS = 1;
-    bq25896_write_reg(handle, 0x09, (uint8_t*)&bq25896_regs.r09);
+    furi_hal_i2c_write_reg_8(
+        handle, BQ25896_ADDRESS, 0x09, *(uint8_t*)&bq25896_regs.r09, BQ25896_I2C_TIMEOUT);
 }
 
 bool bq25896_is_charging(FuriHalI2cBusHandle* handle) {
-    bq25896_read(handle, 0x00, (uint8_t*)&bq25896_regs, sizeof(bq25896_regs));
-    bq25896_read_reg(handle, 0x0B, (uint8_t*)&bq25896_regs.r0B);
+    furi_hal_i2c_read_mem(
+        handle,
+        BQ25896_ADDRESS,
+        0x00,
+        (uint8_t*)&bq25896_regs,
+        sizeof(bq25896_regs),
+        BQ25896_I2C_TIMEOUT);
+    furi_hal_i2c_read_reg_8(
+        handle, BQ25896_ADDRESS, 0x0B, (uint8_t*)&bq25896_regs.r0B, BQ25896_I2C_TIMEOUT);
     return bq25896_regs.r0B.CHRG_STAT != ChrgStatNo;
 }
 
 void bq25896_enable_charging(FuriHalI2cBusHandle* handle) {
     bq25896_regs.r03.CHG_CONFIG = 1;
-    bq25896_write_reg(handle, 0x03, (uint8_t*)&bq25896_regs.r03);
+    furi_hal_i2c_write_reg_8(
+        handle, BQ25896_ADDRESS, 0x03, *(uint8_t*)&bq25896_regs.r03, BQ25896_I2C_TIMEOUT);
 }
 
 void bq25896_disable_charging(FuriHalI2cBusHandle* handle) {
     bq25896_regs.r03.CHG_CONFIG = 0;
-    bq25896_write_reg(handle, 0x03, (uint8_t*)&bq25896_regs.r03);
+    furi_hal_i2c_write_reg_8(
+        handle, BQ25896_ADDRESS, 0x03, *(uint8_t*)&bq25896_regs.r03, BQ25896_I2C_TIMEOUT);
 }
 
 void bq25896_enable_otg(FuriHalI2cBusHandle* handle) {
     bq25896_regs.r03.OTG_CONFIG = 1;
-    bq25896_write_reg(handle, 0x03, (uint8_t*)&bq25896_regs.r03);
+    furi_hal_i2c_write_reg_8(
+        handle, BQ25896_ADDRESS, 0x03, *(uint8_t*)&bq25896_regs.r03, BQ25896_I2C_TIMEOUT);
 }
 
 void bq25896_disable_otg(FuriHalI2cBusHandle* handle) {
     bq25896_regs.r03.OTG_CONFIG = 0;
-    bq25896_write_reg(handle, 0x03, (uint8_t*)&bq25896_regs.r03);
+    furi_hal_i2c_write_reg_8(
+        handle, BQ25896_ADDRESS, 0x03, *(uint8_t*)&bq25896_regs.r03, BQ25896_I2C_TIMEOUT);
 }
 
 bool bq25896_is_otg_enabled(FuriHalI2cBusHandle* handle) {
-    bq25896_read_reg(handle, 0x03, (uint8_t*)&bq25896_regs.r03);
+    furi_hal_i2c_read_reg_8(
+        handle, BQ25896_ADDRESS, 0x03, (uint8_t*)&bq25896_regs.r03, BQ25896_I2C_TIMEOUT);
     return bq25896_regs.r03.OTG_CONFIG;
 }
 
+bool bq25896_check_otg_fault(FuriHalI2cBusHandle* handle) {
+    furi_hal_i2c_read_reg_8(
+        handle, BQ25896_ADDRESS, 0x0C, (uint8_t*)&bq25896_regs.r0C, BQ25896_I2C_TIMEOUT);
+    return bq25896_regs.r0C.BOOST_FAULT;
+}
+
 uint16_t bq25896_get_vbus_voltage(FuriHalI2cBusHandle* handle) {
-    bq25896_read_reg(handle, 0x11, (uint8_t*)&bq25896_regs.r11);
+    furi_hal_i2c_read_reg_8(
+        handle, BQ25896_ADDRESS, 0x11, (uint8_t*)&bq25896_regs.r11, BQ25896_I2C_TIMEOUT);
     if(bq25896_regs.r11.VBUS_GD) {
         return (uint16_t)bq25896_regs.r11.VBUSV * 100 + 2600;
     } else {
@@ -113,21 +141,25 @@ uint16_t bq25896_get_vbus_voltage(FuriHalI2cBusHandle* handle) {
 }
 
 uint16_t bq25896_get_vsys_voltage(FuriHalI2cBusHandle* handle) {
-    bq25896_read_reg(handle, 0x0F, (uint8_t*)&bq25896_regs.r0F);
+    furi_hal_i2c_read_reg_8(
+        handle, BQ25896_ADDRESS, 0x0F, (uint8_t*)&bq25896_regs.r0F, BQ25896_I2C_TIMEOUT);
     return (uint16_t)bq25896_regs.r0F.SYSV * 20 + 2304;
 }
 
 uint16_t bq25896_get_vbat_voltage(FuriHalI2cBusHandle* handle) {
-    bq25896_read_reg(handle, 0x0E, (uint8_t*)&bq25896_regs.r0E);
+    furi_hal_i2c_read_reg_8(
+        handle, BQ25896_ADDRESS, 0x0E, (uint8_t*)&bq25896_regs.r0E, BQ25896_I2C_TIMEOUT);
     return (uint16_t)bq25896_regs.r0E.BATV * 20 + 2304;
 }
 
 uint16_t bq25896_get_vbat_current(FuriHalI2cBusHandle* handle) {
-    bq25896_read_reg(handle, 0x12, (uint8_t*)&bq25896_regs.r12);
+    furi_hal_i2c_read_reg_8(
+        handle, BQ25896_ADDRESS, 0x12, (uint8_t*)&bq25896_regs.r12, BQ25896_I2C_TIMEOUT);
     return (uint16_t)bq25896_regs.r12.ICHGR * 50;
 }
 
 uint32_t bq25896_get_ntc_mpct(FuriHalI2cBusHandle* handle) {
-    bq25896_read_reg(handle, 0x10, (uint8_t*)&bq25896_regs.r10);
+    furi_hal_i2c_read_reg_8(
+        handle, BQ25896_ADDRESS, 0x10, (uint8_t*)&bq25896_regs.r10, BQ25896_I2C_TIMEOUT);
     return (uint32_t)bq25896_regs.r10.TSPCT * 465 + 21000;
 }

lib/drivers/bq25896.h

@@ -28,6 +28,9 @@ void bq25896_disable_otg(FuriHalI2cBusHandle* handle);
 /** Is otg enabled */
 bool bq25896_is_otg_enabled(FuriHalI2cBusHandle* handle);
 
+/** Check OTG BOOST Fault status */
+bool bq25896_check_otg_fault(FuriHalI2cBusHandle* handle);
+
 /** Get VBUS Voltage in mV */
 uint16_t bq25896_get_vbus_voltage(FuriHalI2cBusHandle* handle);
 

lib/drivers/bq27220.c

@@ -8,24 +8,17 @@
 #define TAG "Gauge"
 
 uint16_t bq27220_read_word(FuriHalI2cBusHandle* handle, uint8_t address) {
-    uint8_t buffer[2] = {address};
-    uint16_t ret = 0;
+    uint16_t buf = 0;
 
-    if(furi_hal_i2c_trx(handle, BQ27220_ADDRESS, buffer, 1, buffer, 2, BQ27220_I2C_TIMEOUT)) {
-        ret = *(uint16_t*)buffer;
-    }
+    furi_hal_i2c_read_mem(
+        handle, BQ27220_ADDRESS, address, (uint8_t*)&buf, 2, BQ27220_I2C_TIMEOUT);
 
-    return ret;
+    return buf;
 }
 
 bool bq27220_control(FuriHalI2cBusHandle* handle, uint16_t control) {
-    bool ret = false;
-    uint8_t buffer[3];
-
-    buffer[0] = CommandControl;
-    buffer[1] = control & 0xFF;
-    buffer[2] = (control >> 8) & 0xFF;
-    ret = furi_hal_i2c_tx(handle, BQ27220_ADDRESS, buffer, 3, BQ27220_I2C_TIMEOUT);
+    bool ret = furi_hal_i2c_write_mem(
+        handle, BQ27220_ADDRESS, CommandControl, (uint8_t*)&control, 2, BQ27220_I2C_TIMEOUT);
 
     return ret;
 }
@@ -40,22 +33,22 @@ uint8_t bq27220_get_checksum(uint8_t* data, uint16_t len) {
 
 bool bq27220_set_parameter_u16(FuriHalI2cBusHandle* handle, uint16_t address, uint16_t value) {
     bool ret;
-    uint8_t buffer[5];
+    uint8_t buffer[4];
 
-    buffer[0] = CommandSelectSubclass;
-    buffer[1] = address & 0xFF;
-    buffer[2] = (address >> 8) & 0xFF;
-    buffer[3] = (value >> 8) & 0xFF;
-    buffer[4] = value & 0xFF;
-    ret = furi_hal_i2c_tx(handle, BQ27220_ADDRESS, buffer, 5, BQ27220_I2C_TIMEOUT);
+    buffer[0] = address & 0xFF;
+    buffer[1] = (address >> 8) & 0xFF;
+    buffer[2] = (value >> 8) & 0xFF;
+    buffer[3] = value & 0xFF;
+    ret = furi_hal_i2c_write_mem(
+        handle, BQ27220_ADDRESS, CommandSelectSubclass, buffer, 4, BQ27220_I2C_TIMEOUT);
 
     delay_us(10000);
 
     uint8_t checksum = bq27220_get_checksum(&buffer[1], 4);
-    buffer[0] = CommandMACDataSum;
-    buffer[1] = checksum;
-    buffer[2] = 6;
-    ret = furi_hal_i2c_tx(handle, BQ27220_ADDRESS, buffer, 3, BQ27220_I2C_TIMEOUT);
+    buffer[0] = checksum;
+    buffer[1] = 6;
+    ret = furi_hal_i2c_write_mem(
+        handle, BQ27220_ADDRESS, CommandMACDataSum, buffer, 2, BQ27220_I2C_TIMEOUT);
 
     delay_us(10000);
     return ret;

lib/drivers/lp5562.c

@@ -1,21 +1,17 @@
 #include "lp5562.h"
 #include "lp5562_reg.h"
+#include <furi_hal.h>
 
 #include <stdio.h>
 
-static bool lp5562_write_reg(FuriHalI2cBusHandle* handle, uint8_t address, uint8_t* data) {
-    uint8_t buffer[2] = {address, *data};
-    return furi_hal_i2c_tx(handle, LP5562_ADDRESS, buffer, 2, LP5562_I2C_TIMEOUT);
-}
-
 void lp5562_reset(FuriHalI2cBusHandle* handle) {
     Reg0D_Reset reg = {.value = 0xFF};
-    lp5562_write_reg(handle, 0x0D, (uint8_t*)&reg);
+    furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x0D, *(uint8_t*)&reg, LP5562_I2C_TIMEOUT);
 }
 
 void lp5562_configure(FuriHalI2cBusHandle* handle) {
     Reg08_Config config = {.INT_CLK_EN = true, .PS_EN = true, .PWM_HF = true};
-    lp5562_write_reg(handle, 0x08, (uint8_t*)&config);
+    furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x08, *(uint8_t*)&config, LP5562_I2C_TIMEOUT);
 
     Reg70_LedMap map = {
         .red = EngSelectI2C,
@@ -23,42 +19,178 @@ void lp5562_configure(FuriHalI2cBusHandle* handle) {
         .blue = EngSelectI2C,
         .white = EngSelectI2C,
     };
-    lp5562_write_reg(handle, 0x70, (uint8_t*)&map);
+    furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x70, *(uint8_t*)&map, LP5562_I2C_TIMEOUT);
 }
 
 void lp5562_enable(FuriHalI2cBusHandle* handle) {
     Reg00_Enable reg = {.CHIP_EN = true, .LOG_EN = true};
-    lp5562_write_reg(handle, 0x00, (uint8_t*)&reg);
+    furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x00, *(uint8_t*)&reg, LP5562_I2C_TIMEOUT);
+    //>488μs delay is required after writing to 0x00 register, otherwise program engine will not work
+    delay_us(500);
 }
 
 void lp5562_set_channel_current(FuriHalI2cBusHandle* handle, LP5562Channel channel, uint8_t value) {
     uint8_t reg_no;
     if(channel == LP5562ChannelRed) {
-        reg_no = 0x07;
+        reg_no = LP5562_CHANNEL_RED_CURRENT_REGISTER;
     } else if(channel == LP5562ChannelGreen) {
-        reg_no = 0x06;
+        reg_no = LP5562_CHANNEL_GREEN_CURRENT_REGISTER;
     } else if(channel == LP5562ChannelBlue) {
-        reg_no = 0x05;
+        reg_no = LP5562_CHANNEL_BLUE_CURRENT_REGISTER;
     } else if(channel == LP5562ChannelWhite) {
-        reg_no = 0x0F;
+        reg_no = LP5562_CHANNEL_WHITE_CURRENT_REGISTER;
     } else {
         return;
     }
-    lp5562_write_reg(handle, reg_no, &value);
+    furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, reg_no, value, LP5562_I2C_TIMEOUT);
 }
 
 void lp5562_set_channel_value(FuriHalI2cBusHandle* handle, LP5562Channel channel, uint8_t value) {
     uint8_t reg_no;
     if(channel == LP5562ChannelRed) {
-        reg_no = 0x04;
+        reg_no = LP5562_CHANNEL_RED_VALUE_REGISTER;
+    } else if(channel == LP5562ChannelGreen) {
+        reg_no = LP5562_CHANNEL_GREEN_VALUE_REGISTER;
+    } else if(channel == LP5562ChannelBlue) {
+        reg_no = LP5562_CHANNEL_BLUE_VALUE_REGISTER;
+    } else if(channel == LP5562ChannelWhite) {
+        reg_no = LP5562_CHANNEL_WHITE_VALUE_REGISTER;
+    } else {
+        return;
+    }
+    furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, reg_no, value, LP5562_I2C_TIMEOUT);
+}
+
+uint8_t lp5562_get_channel_value(FuriHalI2cBusHandle* handle, LP5562Channel channel) {
+    uint8_t reg_no;
+    uint8_t value;
+    if(channel == LP5562ChannelRed) {
+        reg_no = LP5562_CHANNEL_RED_VALUE_REGISTER;
+    } else if(channel == LP5562ChannelGreen) {
+        reg_no = LP5562_CHANNEL_GREEN_VALUE_REGISTER;
+    } else if(channel == LP5562ChannelBlue) {
+        reg_no = LP5562_CHANNEL_BLUE_VALUE_REGISTER;
+    } else if(channel == LP5562ChannelWhite) {
+        reg_no = LP5562_CHANNEL_WHITE_VALUE_REGISTER;
+    } else {
+        return 0;
+    }
+    furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, reg_no, &value, LP5562_I2C_TIMEOUT);
+    return value;
+}
+
+static void
+    lp5562_set_channel_src(FuriHalI2cBusHandle* handle, LP5562Channel channel, LP5562Engine src) {
+    uint8_t reg_val = 0;
+    uint8_t bit_offset = 0;
+
+    if(channel == LP5562ChannelRed) {
+        bit_offset = 4;
     } else if(channel == LP5562ChannelGreen) {
-        reg_no = 0x03;
+        bit_offset = 2;
     } else if(channel == LP5562ChannelBlue) {
-        reg_no = 0x02;
+        bit_offset = 0;
     } else if(channel == LP5562ChannelWhite) {
-        reg_no = 0x0E;
+        bit_offset = 6;
     } else {
         return;
     }
-    lp5562_write_reg(handle, reg_no, &value);
+
+    furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, 0x70, &reg_val, LP5562_I2C_TIMEOUT);
+    reg_val &= ~(0x3 << bit_offset);
+    reg_val |= ((src & 0x03) << bit_offset);
+    furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x70, reg_val, LP5562_I2C_TIMEOUT);
+}
+
+void lp5562_execute_program(
+    FuriHalI2cBusHandle* handle,
+    LP5562Engine eng,
+    LP5562Channel ch,
+    uint16_t* program) {
+    if((eng < LP5562Engine1) || (eng > LP5562Engine3)) return;
+    uint8_t reg_val = 0;
+    uint8_t bit_offset = 0;
+    uint8_t enable_reg = 0;
+
+    // Read old value of enable register
+    furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, 0x00, &enable_reg, LP5562_I2C_TIMEOUT);
+
+    // Engine configuration
+    bit_offset = (3 - eng) * 2;
+    furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, 0x01, &reg_val, LP5562_I2C_TIMEOUT);
+    reg_val &= ~(0x3 << bit_offset);
+    reg_val |= (0x01 << bit_offset); // load
+    furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x01, reg_val, LP5562_I2C_TIMEOUT);
+    delay_us(100);
+
+    // Program load
+    for(uint8_t i = 0; i < 16; i++) {
+        // Program words are big-endian, so reverse byte order before loading
+        program[i] = __REV16(program[i]);
+    }
+    furi_hal_i2c_write_mem(
+        handle,
+        LP5562_ADDRESS,
+        0x10 + (0x20 * (eng - 1)),
+        (uint8_t*)program,
+        16 * 2,
+        LP5562_I2C_TIMEOUT);
+
+    // Program start
+    bit_offset = (3 - eng) * 2;
+    furi_hal_i2c_read_reg_8(handle, LP5562_ADDRESS, 0x01, &reg_val, LP5562_I2C_TIMEOUT);
+    reg_val &= ~(0x3 << bit_offset);
+    reg_val |= (0x02 << bit_offset); // run
+    furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x01, reg_val, LP5562_I2C_TIMEOUT);
+
+    // Switch output to Execution Engine
+    lp5562_set_channel_src(handle, ch, eng);
+
+    enable_reg &= ~(0x3 << bit_offset);
+    enable_reg |= (0x02 << bit_offset); // run
+    furi_hal_i2c_write_reg_8(handle, LP5562_ADDRESS, 0x00, enable_reg, LP5562_I2C_TIMEOUT);
+}
+
+void lp5562_execute_ramp(
+    FuriHalI2cBusHandle* handle,
+    LP5562Engine eng,
+    LP5562Channel ch,
+    uint8_t val_start,
+    uint8_t val_end,
+    uint16_t time) {
+    if(val_start == val_end) return;
+
+    // Temporary switch to constant value from register
+    lp5562_set_channel_src(handle, ch, LP5562Direct);
+
+    // Prepare command sequence
+    uint16_t program[16];
+    uint8_t diff = (val_end > val_start) ? (val_end - val_start) : (val_start - val_end);
+    uint16_t time_step = time * 2 / diff;
+    uint8_t prescaller = 0;
+    if(time_step > 0x3F) {
+        time_step /= 32;
+        prescaller = 1;
+    }
+
+    if(time_step == 0) {
+        time_step = 1;
+    } else if(time_step > 0x3F)
+        time_step = 0x3F;
+
+    program[0] = 0x4000 | val_start; // Set PWM
+    if(val_end > val_start) {
+        program[1] = (prescaller << 14) | (time_step << 8) | ((diff / 2) & 0x7F); // Ramp Up
+    } else {
+        program[1] = (prescaller << 14) | (time_step << 8) | 0x80 |
+                     ((diff / 2) & 0x7F); // Ramp Down
+    }
+    program[2] = 0xA001 | ((2 - 1) << 7); // Loop to step 1, repeat twice to get full 8-bit scale
+    program[3] = 0xC000; // End
+
+    // Execute program
+    lp5562_execute_program(handle, eng, LP5562ChannelWhite, program);
+
+    // Write end value to register
+    lp5562_set_channel_value(handle, ch, val_end);
 }

lib/drivers/lp5562.h

@@ -12,6 +12,13 @@ typedef enum {
     LP5562ChannelWhite,
 } LP5562Channel;
 
+typedef enum {
+    LP5562Direct = 0,
+    LP5562Engine1 = 1,
+    LP5562Engine2 = 2,
+    LP5562Engine3 = 3,
+} LP5562Engine;
+
 /** Initialize Driver */
 void lp5562_reset(FuriHalI2cBusHandle* handle);
 
@@ -24,5 +31,24 @@ void lp5562_enable(FuriHalI2cBusHandle* handle);
 /** Set channel current */
 void lp5562_set_channel_current(FuriHalI2cBusHandle* handle, LP5562Channel channel, uint8_t value);
 
-/** Set channel current */
+/** Set channel PWM value */
 void lp5562_set_channel_value(FuriHalI2cBusHandle* handle, LP5562Channel channel, uint8_t value);
+
+/** Get channel PWM value */
+uint8_t lp5562_get_channel_value(FuriHalI2cBusHandle* handle, LP5562Channel channel);
+
+/** Execute program sequence */
+void lp5562_execute_program(
+    FuriHalI2cBusHandle* handle,
+    LP5562Engine eng,
+    LP5562Channel ch,
+    uint16_t* program);
+
+/** Execute ramp program sequence */
+void lp5562_execute_ramp(
+    FuriHalI2cBusHandle* handle,
+    LP5562Engine eng,
+    LP5562Channel ch,
+    uint8_t val_start,
+    uint8_t val_end,
+    uint16_t time);

lib/drivers/lp5562_reg.h

@@ -7,6 +7,16 @@
 #define LP5562_ADDRESS 0x60
 #define LP5562_I2C_TIMEOUT 50
 
+#define LP5562_CHANNEL_RED_CURRENT_REGISTER 0x07
+#define LP5562_CHANNEL_GREEN_CURRENT_REGISTER 0x06
+#define LP5562_CHANNEL_BLUE_CURRENT_REGISTER 0x05
+#define LP5562_CHANNEL_WHITE_CURRENT_REGISTER 0x0F
+
+#define LP5562_CHANNEL_RED_VALUE_REGISTER 0x04
+#define LP5562_CHANNEL_GREEN_VALUE_REGISTER 0x03
+#define LP5562_CHANNEL_BLUE_VALUE_REGISTER 0x02
+#define LP5562_CHANNEL_WHITE_VALUE_REGISTER 0x0E
+
 typedef enum {
     EngExecHold = 0b00,
     EngExecStep = 0b01,

scripts/lint.py

@@ -4,6 +4,7 @@ import os
 import re
 import shutil
 import subprocess
+import multiprocessing
 
 from flipper.app import App
 
@@ -60,17 +61,30 @@ class Main(App):
                     output.append(os.path.join(dirpath, filename))
         return output
 
-    def _format_sources(self, sources: list, dry_run: bool = False):
-        args = ["clang-format", "--Werror", "--style=file", "-i"]
-        if dry_run:
-            args.append("--dry-run")
-        args += sources
+    @staticmethod
+    def _format_source(task):
         try:
-            subprocess.check_call(args)
+            subprocess.check_call(task)
             return True
         except subprocess.CalledProcessError as e:
             return False
 
+    def _format_sources(self, sources: list, dry_run: bool = False):
+        args = ["clang-format", "--Werror", "--style=file", "-i"]
+        if dry_run:
+            args.append("--dry-run")
+
+        files_per_task = 69
+        tasks = []
+        while len(sources) > 0:
+            tasks.append(args + sources[:files_per_task])
+            sources = sources[files_per_task:]
+
+        pool = multiprocessing.Pool()
+        results = pool.map(self._format_source, tasks)
+
+        return not False in results
+
     def _fix_filename(self, filename: str):
         return filename.replace("-", "_")