Add dtmf_dolphin from https://github.com/xMasterX/all-the-plugins

git-subtree-dir: dtmf_dolphin
git-subtree-mainline: cba196ae8400911d6a840b04bb011f99e79db57a
git-subtree-split: 5793814f172ea710281620cb0dd4a22540b5ad3a

dtmf_dolphin/.gitsubtree

@@ -0,0 +1 @@
+https://github.com/xMasterX/all-the-plugins dev base_pack/dtmf_dolphin

dtmf_dolphin/LICENSE

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+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

dtmf_dolphin/README.md

@@ -0,0 +1,18 @@
+![Image](pics/dialer.jpg)
+
+[Original Link](https://github.com/litui/dtmf_dolphin)
+
+## DTMF Dolphin
+
+DTMF (Dual-Tone Multi-Frequency) dialer, Bluebox, and Redbox.
+
+Now in a release-ready state for both Dialer, Bluebox, and Redbox (US/UK) functionality!
+
+Please note that using the current tone output method, the 2600 tone is scaled about 33 Hz higher than it should be. This is a limitation of the current sample rate.
+
+### Educational Links:
+
+* http://www.phrack.org/issues/25/7.html#article
+* https://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling
+* https://en.wikipedia.org/wiki/Blue_box
+* https://en.wikipedia.org/wiki/Red_box_(phreaking)

dtmf_dolphin/application.fam

@@ -0,0 +1,18 @@
+App(
+    appid="dtmf_dolphin",
+    name="DTMF Dolphin",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="dtmf_dolphin_app",
+    requires=[
+        "storage",
+        "gui",
+        "dialogs",
+    ],
+    fap_icon="phone.png",
+    stack_size=8 * 1024,
+    order=20,
+    fap_category="Tools",
+    fap_author="@litui & @xMasterX",
+    fap_version="1.2",
+    fap_description="DTMF (Dual-Tone Multi-Frequency) dialer, Bluebox, and Redbox.",
+)

dtmf_dolphin/dtmf_dolphin.c

@@ -0,0 +1,89 @@
+#include "dtmf_dolphin_i.h"
+
+#include <furi.h>
+#include <furi_hal.h>
+
+static bool dtmf_dolphin_app_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    DTMFDolphinApp* app = context;
+    return scene_manager_handle_custom_event(app->scene_manager, event);
+}
+
+static bool dtmf_dolphin_app_back_event_callback(void* context) {
+    furi_assert(context);
+    DTMFDolphinApp* app = context;
+    return scene_manager_handle_back_event(app->scene_manager);
+}
+
+static void dtmf_dolphin_app_tick_event_callback(void* context) {
+    furi_assert(context);
+    DTMFDolphinApp* app = context;
+
+    scene_manager_handle_tick_event(app->scene_manager);
+}
+
+static DTMFDolphinApp* app_alloc() {
+    DTMFDolphinApp* app = malloc(sizeof(DTMFDolphinApp));
+
+    app->gui = furi_record_open(RECORD_GUI);
+    app->view_dispatcher = view_dispatcher_alloc();
+    app->scene_manager = scene_manager_alloc(&dtmf_dolphin_scene_handlers, app);
+    view_dispatcher_enable_queue(app->view_dispatcher);
+    view_dispatcher_set_event_callback_context(app->view_dispatcher, app);
+
+    view_dispatcher_set_custom_event_callback(
+        app->view_dispatcher, dtmf_dolphin_app_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        app->view_dispatcher, dtmf_dolphin_app_back_event_callback);
+    view_dispatcher_set_tick_event_callback(
+        app->view_dispatcher, dtmf_dolphin_app_tick_event_callback, 100);
+
+    view_dispatcher_attach_to_gui(app->view_dispatcher, app->gui, ViewDispatcherTypeFullscreen);
+
+    app->main_menu_list = variable_item_list_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        DTMFDolphinViewMainMenu,
+        variable_item_list_get_view(app->main_menu_list));
+
+    app->dtmf_dolphin_dialer = dtmf_dolphin_dialer_alloc();
+    view_dispatcher_add_view(
+        app->view_dispatcher,
+        DTMFDolphinViewDialer,
+        dtmf_dolphin_dialer_get_view(app->dtmf_dolphin_dialer));
+
+    app->notification = furi_record_open(RECORD_NOTIFICATION);
+    notification_message(app->notification, &sequence_display_backlight_enforce_on);
+
+    scene_manager_next_scene(app->scene_manager, DTMFDolphinSceneStart);
+
+    return app;
+}
+
+static void app_free(DTMFDolphinApp* app) {
+    furi_assert(app);
+    view_dispatcher_remove_view(app->view_dispatcher, DTMFDolphinViewMainMenu);
+    view_dispatcher_remove_view(app->view_dispatcher, DTMFDolphinViewDialer);
+    variable_item_list_free(app->main_menu_list);
+
+    dtmf_dolphin_dialer_free(app->dtmf_dolphin_dialer);
+
+    view_dispatcher_free(app->view_dispatcher);
+    scene_manager_free(app->scene_manager);
+
+    notification_message(app->notification, &sequence_display_backlight_enforce_auto);
+
+    furi_record_close(RECORD_GUI);
+    furi_record_close(RECORD_NOTIFICATION);
+    free(app);
+}
+
+int32_t dtmf_dolphin_app(void* p) {
+    UNUSED(p);
+    DTMFDolphinApp* app = app_alloc();
+
+    view_dispatcher_run(app->view_dispatcher);
+
+    app_free(app);
+    return 0;
+}

dtmf_dolphin/dtmf_dolphin_audio.c

@@ -0,0 +1,270 @@
+#include "dtmf_dolphin_audio.h"
+
+DTMFDolphinAudio* current_player;
+
+static void dtmf_dolphin_audio_dma_isr(void* ctx) {
+    FuriMessageQueue* event_queue = ctx;
+
+    if(LL_DMA_IsActiveFlag_HT1(DMA1)) {
+        LL_DMA_ClearFlag_HT1(DMA1);
+
+        DTMFDolphinCustomEvent event = {.type = DTMFDolphinEventDMAHalfTransfer};
+        furi_message_queue_put(event_queue, &event, 0);
+    }
+
+    if(LL_DMA_IsActiveFlag_TC1(DMA1)) {
+        LL_DMA_ClearFlag_TC1(DMA1);
+
+        DTMFDolphinCustomEvent event = {.type = DTMFDolphinEventDMAFullTransfer};
+        furi_message_queue_put(event_queue, &event, 0);
+    }
+}
+
+void dtmf_dolphin_audio_clear_samples(DTMFDolphinAudio* player) {
+    for(size_t i = 0; i < player->buffer_length; i++) {
+        player->sample_buffer[i] = 0;
+    }
+}
+
+DTMFDolphinOsc* dtmf_dolphin_osc_alloc() {
+    DTMFDolphinOsc* osc = malloc(sizeof(DTMFDolphinOsc));
+    osc->cached_freq = 0;
+    osc->offset = 0;
+    osc->period = 0;
+    osc->lookup_table = NULL;
+    return osc;
+}
+
+DTMFDolphinPulseFilter* dtmf_dolphin_pulse_filter_alloc() {
+    DTMFDolphinPulseFilter* pf = malloc(sizeof(DTMFDolphinPulseFilter));
+    pf->duration = 0;
+    pf->period = 0;
+    pf->offset = 0;
+    pf->lookup_table = NULL;
+    return pf;
+}
+
+DTMFDolphinAudio* dtmf_dolphin_audio_alloc() {
+    DTMFDolphinAudio* player = malloc(sizeof(DTMFDolphinAudio));
+    player->buffer_length = SAMPLE_BUFFER_LENGTH;
+    player->half_buffer_length = SAMPLE_BUFFER_LENGTH / 2;
+    player->sample_buffer = malloc(sizeof(uint16_t) * player->buffer_length);
+    player->osc1 = dtmf_dolphin_osc_alloc();
+    player->osc2 = dtmf_dolphin_osc_alloc();
+    player->volume = 1.0f;
+    player->queue = furi_message_queue_alloc(10, sizeof(DTMFDolphinCustomEvent));
+    player->filter = dtmf_dolphin_pulse_filter_alloc();
+    player->playing = false;
+    dtmf_dolphin_audio_clear_samples(player);
+
+    return player;
+}
+
+size_t calc_waveform_period(float freq) {
+    if(!freq) {
+        return 0;
+    }
+    // DMA Rate calculation, thanks to Dr_Zlo
+    float dma_rate = CPU_CLOCK_FREQ / 2 / DTMF_DOLPHIN_HAL_DMA_PRESCALER /
+                     (DTMF_DOLPHIN_HAL_DMA_AUTORELOAD + 1);
+
+    // Using a constant scaling modifier, which likely represents
+    // the combined system overhead and isr latency.
+    return (uint16_t)dma_rate * 2 / freq * 0.801923;
+}
+
+void osc_generate_lookup_table(DTMFDolphinOsc* osc, float freq) {
+    if(osc->lookup_table != NULL) {
+        free(osc->lookup_table);
+    }
+    osc->offset = 0;
+    osc->cached_freq = freq;
+    osc->period = calc_waveform_period(freq);
+    if(!osc->period) {
+        osc->lookup_table = NULL;
+        return;
+    }
+    osc->lookup_table = malloc(sizeof(float) * osc->period);
+
+    for(size_t i = 0; i < osc->period; i++) {
+        osc->lookup_table[i] = sin(i * PERIOD_2_PI / osc->period) + 1;
+    }
+}
+
+void filter_generate_lookup_table(
+    DTMFDolphinPulseFilter* pf,
+    uint16_t pulses,
+    uint16_t pulse_ms,
+    uint16_t gap_ms) {
+    if(pf->lookup_table != NULL) {
+        free(pf->lookup_table);
+    }
+    pf->offset = 0;
+
+    uint16_t gap_period = calc_waveform_period(1000 / (float)gap_ms);
+    uint16_t pulse_period = calc_waveform_period(1000 / (float)pulse_ms);
+    pf->period = pulse_period + gap_period;
+
+    if(!pf->period) {
+        pf->lookup_table = NULL;
+        return;
+    }
+    pf->duration = pf->period * pulses;
+    pf->lookup_table = malloc(sizeof(bool) * pf->duration);
+
+    for(size_t i = 0; i < pf->duration; i++) {
+        pf->lookup_table[i] = i % pf->period < pulse_period;
+    }
+}
+
+float sample_frame(DTMFDolphinOsc* osc) {
+    float frame = 0.0;
+
+    if(osc->period) {
+        frame = osc->lookup_table[osc->offset];
+        osc->offset = (osc->offset + 1) % osc->period;
+    }
+
+    return frame;
+}
+
+bool sample_filter(DTMFDolphinPulseFilter* pf) {
+    bool frame = true;
+
+    if(pf->duration) {
+        if(pf->offset < pf->duration) {
+            frame = pf->lookup_table[pf->offset];
+            pf->offset = pf->offset + 1;
+        } else {
+            frame = false;
+        }
+    }
+
+    return frame;
+}
+
+void dtmf_dolphin_osc_free(DTMFDolphinOsc* osc) {
+    if(osc->lookup_table != NULL) {
+        free(osc->lookup_table);
+    }
+    free(osc);
+}
+
+void dtmf_dolphin_filter_free(DTMFDolphinPulseFilter* pf) {
+    if(pf->lookup_table != NULL) {
+        free(pf->lookup_table);
+    }
+    free(pf);
+}
+
+void dtmf_dolphin_audio_free(DTMFDolphinAudio* player) {
+    furi_message_queue_free(player->queue);
+    dtmf_dolphin_osc_free(player->osc1);
+    dtmf_dolphin_osc_free(player->osc2);
+    dtmf_dolphin_filter_free(player->filter);
+    free(player->sample_buffer);
+    free(player);
+    current_player = NULL;
+}
+
+bool generate_waveform(DTMFDolphinAudio* player, uint16_t buffer_index) {
+    uint16_t* sample_buffer_start = &player->sample_buffer[buffer_index];
+
+    for(size_t i = 0; i < player->half_buffer_length; i++) {
+        float data = 0;
+        if(player->osc2->period) {
+            data = (sample_frame(player->osc1) / 2) + (sample_frame(player->osc2) / 2);
+        } else {
+            data = (sample_frame(player->osc1));
+        }
+        data *= sample_filter(player->filter) ? player->volume : 0.0;
+        data *= UINT8_MAX / 2; // scale -128..127
+        data += UINT8_MAX / 2; // to unsigned
+
+        if(data < 0) {
+            data = 0;
+        }
+
+        if(data > 255) {
+            data = 255;
+        }
+
+        sample_buffer_start[i] = data;
+    }
+
+    return true;
+}
+
+bool dtmf_dolphin_audio_play_tones(
+    float freq1,
+    float freq2,
+    uint16_t pulses,
+    uint16_t pulse_ms,
+    uint16_t gap_ms) {
+    if(current_player != NULL && current_player->playing) {
+        // Cannot start playing while still playing something else
+        return false;
+    }
+    current_player = dtmf_dolphin_audio_alloc();
+
+    osc_generate_lookup_table(current_player->osc1, freq1);
+    osc_generate_lookup_table(current_player->osc2, freq2);
+    filter_generate_lookup_table(current_player->filter, pulses, pulse_ms, gap_ms);
+
+    generate_waveform(current_player, 0);
+    generate_waveform(current_player, current_player->half_buffer_length);
+
+    dtmf_dolphin_dma_init((uint32_t)current_player->sample_buffer, current_player->buffer_length);
+
+    furi_hal_interrupt_set_isr(
+        FuriHalInterruptIdDma1Ch1, dtmf_dolphin_audio_dma_isr, current_player->queue);
+    if(furi_hal_speaker_acquire(1000)) {
+        dtmf_dolphin_speaker_init();
+        dtmf_dolphin_dma_start();
+        dtmf_dolphin_speaker_start();
+        current_player->playing = true;
+        return true;
+    } else {
+        current_player->playing = false;
+        return false;
+    }
+}
+
+bool dtmf_dolphin_audio_stop_tones() {
+    if(current_player != NULL && !current_player->playing) {
+        // Can't stop a player that isn't playing.
+        return false;
+    }
+    while(current_player->filter->offset > 0 &&
+          current_player->filter->offset < current_player->filter->duration) {
+        // run remaining ticks if needed to complete filter sequence
+        dtmf_dolphin_audio_handle_tick();
+    }
+    dtmf_dolphin_speaker_stop();
+    dtmf_dolphin_dma_stop();
+    furi_hal_speaker_release();
+
+    furi_hal_interrupt_set_isr(FuriHalInterruptIdDma1Ch1, NULL, NULL);
+
+    dtmf_dolphin_audio_free(current_player);
+
+    return true;
+}
+
+bool dtmf_dolphin_audio_handle_tick() {
+    bool handled = false;
+
+    if(current_player) {
+        DTMFDolphinCustomEvent event;
+        if(furi_message_queue_get(current_player->queue, &event, 250) == FuriStatusOk) {
+            if(event.type == DTMFDolphinEventDMAHalfTransfer) {
+                generate_waveform(current_player, 0);
+                handled = true;
+            } else if(event.type == DTMFDolphinEventDMAFullTransfer) {
+                generate_waveform(current_player, current_player->half_buffer_length);
+                handled = true;
+            }
+        }
+    }
+    return handled;
+}

dtmf_dolphin/dtmf_dolphin_audio.h

@@ -0,0 +1,54 @@
+#pragma once
+// #include "dtmf_dolphin_i.h"
+#include "dtmf_dolphin_event.h"
+#include "dtmf_dolphin_hal.h"
+
+#define SAMPLE_BUFFER_LENGTH 8192
+#define PERIOD_2_PI 6.2832
+#define CPU_CLOCK_FREQ 64000000
+
+typedef struct {
+    float cached_freq;
+    size_t period;
+    float* lookup_table;
+    uint16_t offset;
+} DTMFDolphinOsc;
+
+typedef struct {
+    float duration;
+    size_t period;
+    bool* lookup_table;
+    uint16_t offset;
+} DTMFDolphinPulseFilter;
+
+typedef struct {
+    size_t buffer_length;
+    size_t half_buffer_length;
+    uint8_t* buffer_buffer;
+    uint16_t* sample_buffer;
+    float volume;
+    FuriMessageQueue* queue;
+    DTMFDolphinOsc* osc1;
+    DTMFDolphinOsc* osc2;
+    DTMFDolphinPulseFilter* filter;
+    bool playing;
+} DTMFDolphinAudio;
+
+DTMFDolphinOsc* dtmf_dolphin_osc_alloc();
+
+DTMFDolphinAudio* dtmf_dolphin_audio_alloc();
+
+void dtmf_dolphin_audio_free(DTMFDolphinAudio* player);
+
+void dtmf_dolphin_osc_free(DTMFDolphinOsc* osc);
+
+bool dtmf_dolphin_audio_play_tones(
+    float freq1,
+    float freq2,
+    uint16_t pulses,
+    uint16_t pulse_ms,
+    uint16_t gap_ms);
+
+bool dtmf_dolphin_audio_stop_tones();
+
+bool dtmf_dolphin_audio_handle_tick();

dtmf_dolphin/dtmf_dolphin_data.c

@@ -0,0 +1,220 @@
+#include "dtmf_dolphin_data.h"
+
+typedef struct {
+    const uint8_t row;
+    const uint8_t col;
+    const uint8_t span;
+} DTMFDolphinTonePos;
+
+typedef struct {
+    const char* name;
+    const float frequency_1;
+    const float frequency_2;
+    const DTMFDolphinTonePos pos;
+    const uint16_t pulses; // for Redbox
+    const uint16_t pulse_ms; // for Redbox
+    const uint16_t gap_duration; // for Redbox
+} DTMFDolphinTones;
+
+typedef struct {
+    const char* name;
+    DTMFDolphinToneSection block;
+    uint8_t tone_count;
+    DTMFDolphinTones tones[DTMF_DOLPHIN_MAX_TONE_COUNT];
+} DTMFDolphinSceneData;
+
+DTMFDolphinSceneData DTMFDolphinSceneDataDialer = {
+    .name = "Dialer",
+    .block = DTMF_DOLPHIN_TONE_BLOCK_DIALER,
+    .tone_count = 16,
+    .tones = {
+        {"1", 697.0, 1209.0, {0, 0, 1}, 0, 0, 0},
+        {"2", 697.0, 1336.0, {0, 1, 1}, 0, 0, 0},
+        {"3", 697.0, 1477.0, {0, 2, 1}, 0, 0, 0},
+        {"A", 697.0, 1633.0, {0, 3, 1}, 0, 0, 0},
+        {"4", 770.0, 1209.0, {1, 0, 1}, 0, 0, 0},
+        {"5", 770.0, 1336.0, {1, 1, 1}, 0, 0, 0},
+        {"6", 770.0, 1477.0, {1, 2, 1}, 0, 0, 0},
+        {"B", 770.0, 1633.0, {1, 3, 1}, 0, 0, 0},
+        {"7", 852.0, 1209.0, {2, 0, 1}, 0, 0, 0},
+        {"8", 852.0, 1336.0, {2, 1, 1}, 0, 0, 0},
+        {"9", 852.0, 1477.0, {2, 2, 1}, 0, 0, 0},
+        {"C", 852.0, 1633.0, {2, 3, 1}, 0, 0, 0},
+        {"*", 941.0, 1209.0, {3, 0, 1}, 0, 0, 0},
+        {"0", 941.0, 1336.0, {3, 1, 1}, 0, 0, 0},
+        {"#", 941.0, 1477.0, {3, 2, 1}, 0, 0, 0},
+        {"D", 941.0, 1633.0, {3, 3, 1}, 0, 0, 0},
+    }};
+
+DTMFDolphinSceneData DTMFDolphinSceneDataBluebox = {
+    .name = "Bluebox",
+    .block = DTMF_DOLPHIN_TONE_BLOCK_BLUEBOX,
+    .tone_count = 13,
+    .tones = {
+        {"1", 700.0, 900.0, {0, 0, 1}, 0, 0, 0},
+        {"2", 700.0, 1100.0, {0, 1, 1}, 0, 0, 0},
+        {"3", 900.0, 1100.0, {0, 2, 1}, 0, 0, 0},
+        {"4", 700.0, 1300.0, {1, 0, 1}, 0, 0, 0},
+        {"5", 900.0, 1300.0, {1, 1, 1}, 0, 0, 0},
+        {"6", 1100.0, 1300.0, {1, 2, 1}, 0, 0, 0},
+        {"7", 700.0, 1500.0, {2, 0, 1}, 0, 0, 0},
+        {"8", 900.0, 1500.0, {2, 1, 1}, 0, 0, 0},
+        {"9", 1100.0, 1500.0, {2, 2, 1}, 0, 0, 0},
+        {"0", 1300.0, 1500.0, {3, 1, 1}, 0, 0, 0},
+        {"KP", 1100.0, 1700.0, {0, 3, 2}, 0, 0, 0},
+        {"ST", 1500.0, 1700.0, {1, 3, 2}, 0, 0, 0},
+        {"2600", 2600.0, 0.0, {3, 2, 3}, 0, 0, 0},
+    }};
+
+DTMFDolphinSceneData DTMFDolphinSceneDataRedboxUS = {
+    .name = "Redbox (US)",
+    .block = DTMF_DOLPHIN_TONE_BLOCK_REDBOX_US,
+    .tone_count = 4,
+    .tones = {
+        {"Nickel", 1700.0, 2200.0, {0, 0, 5}, 1, 66, 0},
+        {"Dime", 1700.0, 2200.0, {1, 0, 5}, 2, 66, 66},
+        {"Quarter", 1700.0, 2200.0, {2, 0, 5}, 5, 33, 33},
+        {"Dollar", 1700.0, 2200.0, {3, 0, 5}, 1, 650, 0},
+    }};
+
+DTMFDolphinSceneData DTMFDolphinSceneDataRedboxCA = {
+    .name = "Redbox (CA)",
+    .block = DTMF_DOLPHIN_TONE_BLOCK_REDBOX_CA,
+    .tone_count = 3,
+    .tones = {
+        {"Nickel", 2200.0, 0.0, {0, 0, 5}, 1, 66, 0},
+        {"Dime", 2200.0, 0.0, {1, 0, 5}, 2, 66, 66},
+        {"Quarter", 2200.0, 0.0, {2, 0, 5}, 5, 33, 33},
+    }};
+
+DTMFDolphinSceneData DTMFDolphinSceneDataRedboxUK = {
+    .name = "Redbox (UK)",
+    .block = DTMF_DOLPHIN_TONE_BLOCK_REDBOX_UK,
+    .tone_count = 2,
+    .tones = {
+        {"10p", 1000.0, 0.0, {0, 0, 5}, 1, 200, 0},
+        {"50p", 1000.0, 0.0, {1, 0, 5}, 1, 350, 0},
+    }};
+
+DTMFDolphinSceneData DTMFDolphinSceneDataMisc = {
+    .name = "Misc",
+    .block = DTMF_DOLPHIN_TONE_BLOCK_MISC,
+    .tone_count = 3,
+    .tones = {
+        {"CCITT 11", 700.0, 1700.0, {0, 0, 5}, 0, 0, 0},
+        {"CCITT 12", 900.0, 1700.0, {1, 0, 5}, 0, 0, 0},
+        {"CCITT KP2", 1300.0, 1700.0, {2, 0, 5}, 0, 0, 0},
+    }};
+
+DTMFDolphinToneSection current_section;
+DTMFDolphinSceneData* current_scene_data;
+
+void dtmf_dolphin_data_set_current_section(DTMFDolphinToneSection section) {
+    current_section = section;
+
+    switch(current_section) {
+    case DTMF_DOLPHIN_TONE_BLOCK_BLUEBOX:
+        current_scene_data = &DTMFDolphinSceneDataBluebox;
+        break;
+    case DTMF_DOLPHIN_TONE_BLOCK_REDBOX_US:
+        current_scene_data = &DTMFDolphinSceneDataRedboxUS;
+        break;
+    case DTMF_DOLPHIN_TONE_BLOCK_REDBOX_CA:
+        current_scene_data = &DTMFDolphinSceneDataRedboxCA;
+        break;
+    case DTMF_DOLPHIN_TONE_BLOCK_REDBOX_UK:
+        current_scene_data = &DTMFDolphinSceneDataRedboxUK;
+        break;
+    case DTMF_DOLPHIN_TONE_BLOCK_MISC:
+        current_scene_data = &DTMFDolphinSceneDataMisc;
+        break;
+    default: // DTMF_DOLPHIN_TONE_BLOCK_DIALER:
+        current_scene_data = &DTMFDolphinSceneDataDialer;
+        break;
+    }
+}
+
+DTMFDolphinToneSection dtmf_dolphin_data_get_current_section() {
+    return current_section;
+}
+
+DTMFDolphinSceneData* dtmf_dolphin_data_get_current_scene_data() {
+    return current_scene_data;
+}
+
+bool dtmf_dolphin_data_get_tone_frequencies(float* freq1, float* freq2, uint8_t row, uint8_t col) {
+    for(size_t i = 0; i < current_scene_data->tone_count; i++) {
+        DTMFDolphinTones tones = current_scene_data->tones[i];
+        if(tones.pos.row == row && tones.pos.col == col) {
+            freq1[0] = tones.frequency_1;
+            freq2[0] = tones.frequency_2;
+            return true;
+        }
+    }
+    return false;
+}
+
+bool dtmf_dolphin_data_get_filter_data(
+    uint16_t* pulses,
+    uint16_t* pulse_ms,
+    uint16_t* gap_ms,
+    uint8_t row,
+    uint8_t col) {
+    for(size_t i = 0; i < current_scene_data->tone_count; i++) {
+        DTMFDolphinTones tones = current_scene_data->tones[i];
+        if(tones.pos.row == row && tones.pos.col == col) {
+            pulses[0] = tones.pulses;
+            pulse_ms[0] = tones.pulse_ms;
+            gap_ms[0] = tones.gap_duration;
+            return true;
+        }
+    }
+    return false;
+}
+
+const char* dtmf_dolphin_data_get_tone_name(uint8_t row, uint8_t col) {
+    for(size_t i = 0; i < current_scene_data->tone_count; i++) {
+        DTMFDolphinTones tones = current_scene_data->tones[i];
+        if(tones.pos.row == row && tones.pos.col == col) {
+            return tones.name;
+        }
+    }
+    return NULL;
+}
+
+const char* dtmf_dolphin_data_get_current_section_name() {
+    if(current_scene_data) {
+        return current_scene_data->name;
+    }
+    return NULL;
+}
+
+void dtmf_dolphin_tone_get_max_pos(uint8_t* max_rows, uint8_t* max_cols, uint8_t* max_span) {
+    max_rows[0] = 0;
+    max_cols[0] = 0;
+    max_span[0] = 0;
+    uint8_t tmp_rowspan[5] = {0, 0, 0, 0, 0};
+    for(size_t i = 0; i < current_scene_data->tone_count; i++) {
+        DTMFDolphinTones tones = current_scene_data->tones[i];
+        if(tones.pos.row > max_rows[0]) {
+            max_rows[0] = tones.pos.row;
+        }
+        if(tones.pos.col > max_cols[0]) {
+            max_cols[0] = tones.pos.col;
+        }
+        tmp_rowspan[tones.pos.row] += tones.pos.span;
+        if(tmp_rowspan[tones.pos.row] > max_span[0]) max_span[0] = tmp_rowspan[tones.pos.row];
+    }
+    max_rows[0]++;
+    max_cols[0]++;
+}
+
+uint8_t dtmf_dolphin_get_tone_span(uint8_t row, uint8_t col) {
+    for(size_t i = 0; i < current_scene_data->tone_count; i++) {
+        DTMFDolphinTones tones = current_scene_data->tones[i];
+        if(tones.pos.row == row && tones.pos.col == col) {
+            return tones.pos.span;
+        }
+    }
+    return 0;
+}

dtmf_dolphin/dtmf_dolphin_data.h

@@ -0,0 +1,36 @@
+#pragma once
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#define DTMF_DOLPHIN_MAX_TONE_COUNT 16
+
+typedef enum {
+    DTMF_DOLPHIN_TONE_BLOCK_DIALER,
+    DTMF_DOLPHIN_TONE_BLOCK_BLUEBOX,
+    DTMF_DOLPHIN_TONE_BLOCK_REDBOX_US,
+    DTMF_DOLPHIN_TONE_BLOCK_REDBOX_UK,
+    DTMF_DOLPHIN_TONE_BLOCK_REDBOX_CA,
+    DTMF_DOLPHIN_TONE_BLOCK_MISC,
+} DTMFDolphinToneSection;
+
+void dtmf_dolphin_data_set_current_section(DTMFDolphinToneSection section);
+
+DTMFDolphinToneSection dtmf_dolphin_data_get_current_section();
+
+bool dtmf_dolphin_data_get_tone_frequencies(float* freq1, float* freq2, uint8_t row, uint8_t col);
+
+bool dtmf_dolphin_data_get_filter_data(
+    uint16_t* pulses,
+    uint16_t* pulse_ms,
+    uint16_t* gap_ms,
+    uint8_t row,
+    uint8_t col);
+
+const char* dtmf_dolphin_data_get_tone_name(uint8_t row, uint8_t col);
+
+const char* dtmf_dolphin_data_get_current_section_name();
+
+void dtmf_dolphin_tone_get_max_pos(uint8_t* max_rows, uint8_t* max_cols, uint8_t* max_span);
+
+uint8_t dtmf_dolphin_get_tone_span(uint8_t row, uint8_t col);

dtmf_dolphin/dtmf_dolphin_event.h

@@ -0,0 +1,21 @@
+#pragma once
+
+typedef enum {
+    DTMFDolphinEventVolumeUp = 0,
+    DTMFDolphinEventVolumeDown,
+    DTMFDolphinDialerOkCB,
+    DTMFDolphinEventStartDialer,
+    DTMFDolphinEventStartBluebox,
+    DTMFDolphinEventStartRedboxUS,
+    DTMFDolphinEventStartRedboxUK,
+    DTMFDolphinEventStartRedboxCA,
+    DTMFDolphinEventStartMisc,
+    DTMFDolphinEventPlayTones,
+    DTMFDolphinEventStopTones,
+    DTMFDolphinEventDMAHalfTransfer,
+    DTMFDolphinEventDMAFullTransfer,
+} DTMFDolphinEvent;
+
+typedef struct {
+    DTMFDolphinEvent type;
+} DTMFDolphinCustomEvent;

dtmf_dolphin/dtmf_dolphin_hal.c

@@ -0,0 +1,52 @@
+#include "dtmf_dolphin_hal.h"
+
+void dtmf_dolphin_speaker_init() {
+    LL_TIM_InitTypeDef TIM_InitStruct = {0};
+    TIM_InitStruct.Prescaler = DTMF_DOLPHIN_HAL_DMA_PRESCALER;
+    TIM_InitStruct.Autoreload = DTMF_DOLPHIN_HAL_DMA_AUTORELOAD;
+    LL_TIM_Init(FURI_HAL_SPEAKER_TIMER, &TIM_InitStruct);
+
+    LL_TIM_OC_InitTypeDef TIM_OC_InitStruct = {0};
+    TIM_OC_InitStruct.OCMode = LL_TIM_OCMODE_PWM1;
+    TIM_OC_InitStruct.OCState = LL_TIM_OCSTATE_ENABLE;
+    TIM_OC_InitStruct.CompareValue = 127;
+    LL_TIM_OC_Init(FURI_HAL_SPEAKER_TIMER, FURI_HAL_SPEAKER_CHANNEL, &TIM_OC_InitStruct);
+}
+
+void dtmf_dolphin_speaker_start() {
+    LL_TIM_EnableAllOutputs(FURI_HAL_SPEAKER_TIMER);
+    LL_TIM_EnableCounter(FURI_HAL_SPEAKER_TIMER);
+}
+
+void dtmf_dolphin_speaker_stop() {
+    LL_TIM_DisableAllOutputs(FURI_HAL_SPEAKER_TIMER);
+    LL_TIM_DisableCounter(FURI_HAL_SPEAKER_TIMER);
+}
+
+void dtmf_dolphin_dma_init(uint32_t address, size_t size) {
+    uint32_t dma_dst = (uint32_t) & (FURI_HAL_SPEAKER_TIMER->CCR1);
+
+    LL_DMA_ConfigAddresses(DMA_INSTANCE, address, dma_dst, LL_DMA_DIRECTION_MEMORY_TO_PERIPH);
+    LL_DMA_SetDataLength(DMA_INSTANCE, size);
+
+    LL_DMA_SetPeriphRequest(DMA_INSTANCE, LL_DMAMUX_REQ_TIM16_UP);
+    LL_DMA_SetDataTransferDirection(DMA_INSTANCE, LL_DMA_DIRECTION_MEMORY_TO_PERIPH);
+    LL_DMA_SetChannelPriorityLevel(DMA_INSTANCE, LL_DMA_PRIORITY_VERYHIGH);
+    LL_DMA_SetMode(DMA_INSTANCE, LL_DMA_MODE_CIRCULAR);
+    LL_DMA_SetPeriphIncMode(DMA_INSTANCE, LL_DMA_PERIPH_NOINCREMENT);
+    LL_DMA_SetMemoryIncMode(DMA_INSTANCE, LL_DMA_MEMORY_INCREMENT);
+    LL_DMA_SetPeriphSize(DMA_INSTANCE, LL_DMA_PDATAALIGN_HALFWORD);
+    LL_DMA_SetMemorySize(DMA_INSTANCE, LL_DMA_MDATAALIGN_HALFWORD);
+
+    LL_DMA_EnableIT_TC(DMA_INSTANCE);
+    LL_DMA_EnableIT_HT(DMA_INSTANCE);
+}
+
+void dtmf_dolphin_dma_start() {
+    LL_DMA_EnableChannel(DMA_INSTANCE);
+    LL_TIM_EnableDMAReq_UPDATE(FURI_HAL_SPEAKER_TIMER);
+}
+
+void dtmf_dolphin_dma_stop() {
+    LL_DMA_DisableChannel(DMA_INSTANCE);
+}

dtmf_dolphin/dtmf_dolphin_hal.h

@@ -0,0 +1,33 @@
+#pragma once
+#include <furi.h>
+#include <furi_hal.h>
+#include <stm32wb55xx.h>
+#include <stm32wbxx_ll_tim.h>
+#include <stm32wbxx_ll_dma.h>
+
+#define FURI_HAL_SPEAKER_TIMER TIM16
+#define FURI_HAL_SPEAKER_CHANNEL LL_TIM_CHANNEL_CH1
+#define DMA_INSTANCE DMA1, LL_DMA_CHANNEL_1
+
+#define DTMF_DOLPHIN_HAL_DMA_PRESCALER 4
+#define DTMF_DOLPHIN_HAL_DMA_AUTORELOAD 255
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void dtmf_dolphin_speaker_init();
+
+void dtmf_dolphin_speaker_start();
+
+void dtmf_dolphin_speaker_stop();
+
+void dtmf_dolphin_dma_init(uint32_t address, size_t size);
+
+void dtmf_dolphin_dma_start();
+
+void dtmf_dolphin_dma_stop();
+
+#ifdef __cplusplus
+}
+#endif

dtmf_dolphin/dtmf_dolphin_i.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include "scenes/dtmf_dolphin_scene.h"
+
+#include <gui/gui.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+// #include <gui/modules/submenu.h>
+// #include <gui/modules/widget.h>
+#include <gui/modules/variable_item_list.h>
+#include <notification/notification_messages.h>
+#include <input/input.h>
+
+#include "dtmf_dolphin_event.h"
+
+#include "views/dtmf_dolphin_dialer.h"
+
+#define TAG "DTMFDolphin"
+
+enum DTMFDolphinSceneState {
+    DTMFDolphinSceneStateDialer,
+    DTMFDolphinSceneStateBluebox,
+    DTMFDolphinSceneStateRedboxUS,
+    DTMFDolphinSceneStateRedboxUK,
+    DTMFDolphinSceneStateRedboxCA,
+    DTMFDolphinSceneStateMisc,
+};
+
+typedef struct {
+    ViewDispatcher* view_dispatcher;
+    SceneManager* scene_manager;
+    VariableItemList* main_menu_list;
+    DTMFDolphinDialer* dtmf_dolphin_dialer;
+
+    Gui* gui;
+    // ButtonPanel* dialer_button_panel;
+    // ButtonPanel* bluebox_button_panel;
+    // ButtonPanel* redbox_button_panel;
+    NotificationApp* notification;
+} DTMFDolphinApp;
+
+typedef enum { DTMFDolphinViewMainMenu, DTMFDolphinViewDialer } DTMFDolphinView;

dtmf_dolphin/scenes/dtmf_dolphin_scene.c

@@ -0,0 +1,30 @@
+#include "dtmf_dolphin_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const dtmf_dolphin_scene_on_enter_handlers[])(void*) = {
+#include "dtmf_dolphin_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const dtmf_dolphin_scene_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "dtmf_dolphin_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const dtmf_dolphin_scene_on_exit_handlers[])(void* context) = {
+#include "dtmf_dolphin_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers dtmf_dolphin_scene_handlers = {
+    .on_enter_handlers = dtmf_dolphin_scene_on_enter_handlers,
+    .on_event_handlers = dtmf_dolphin_scene_on_event_handlers,
+    .on_exit_handlers = dtmf_dolphin_scene_on_exit_handlers,
+    .scene_num = DTMFDolphinSceneNum,
+};

dtmf_dolphin/scenes/dtmf_dolphin_scene.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) DTMFDolphinScene##id,
+typedef enum {
+#include "dtmf_dolphin_scene_config.h"
+    DTMFDolphinSceneNum,
+} DTMFDolphinScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers dtmf_dolphin_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "dtmf_dolphin_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "dtmf_dolphin_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "dtmf_dolphin_scene_config.h"
+#undef ADD_SCENE

dtmf_dolphin/scenes/dtmf_dolphin_scene_config.h

@@ -0,0 +1,2 @@
+ADD_SCENE(dtmf_dolphin, start, Start)
+ADD_SCENE(dtmf_dolphin, dialer, Dialer)

dtmf_dolphin/scenes/dtmf_dolphin_scene_dialer.c

@@ -0,0 +1,49 @@
+#include "../dtmf_dolphin_i.h"
+// #include "../dtmf_dolphin_data.h"
+// #include "../dtmf_dolphin_audio.h"
+
+void dtmf_dolphin_scene_dialer_on_enter(void* context) {
+    DTMFDolphinApp* app = context;
+    DTMFDolphinScene scene_id = DTMFDolphinSceneDialer;
+    enum DTMFDolphinSceneState state = scene_manager_get_scene_state(app->scene_manager, scene_id);
+
+    switch(state) {
+    case DTMFDolphinSceneStateBluebox:
+        dtmf_dolphin_data_set_current_section(DTMF_DOLPHIN_TONE_BLOCK_BLUEBOX);
+        break;
+    case DTMFDolphinSceneStateRedboxUS:
+        dtmf_dolphin_data_set_current_section(DTMF_DOLPHIN_TONE_BLOCK_REDBOX_US);
+        break;
+    case DTMFDolphinSceneStateRedboxUK:
+        dtmf_dolphin_data_set_current_section(DTMF_DOLPHIN_TONE_BLOCK_REDBOX_UK);
+        break;
+    case DTMFDolphinSceneStateRedboxCA:
+        dtmf_dolphin_data_set_current_section(DTMF_DOLPHIN_TONE_BLOCK_REDBOX_CA);
+        break;
+    case DTMFDolphinSceneStateMisc:
+        dtmf_dolphin_data_set_current_section(DTMF_DOLPHIN_TONE_BLOCK_MISC);
+        break;
+    default:
+        dtmf_dolphin_data_set_current_section(DTMF_DOLPHIN_TONE_BLOCK_DIALER);
+        break;
+    }
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, DTMFDolphinViewDialer);
+}
+
+bool dtmf_dolphin_scene_dialer_on_event(void* context, SceneManagerEvent event) {
+    DTMFDolphinApp* app = context;
+    UNUSED(app);
+    UNUSED(event);
+    bool consumed = false;
+
+    // if(event.type == SceneManagerEventTypeTick) {
+    //     consumed = true;
+    // }
+
+    return consumed;
+}
+
+void dtmf_dolphin_scene_dialer_on_exit(void* context) {
+    UNUSED(context);
+}

dtmf_dolphin/scenes/dtmf_dolphin_scene_start.c

@@ -0,0 +1,94 @@
+#include "../dtmf_dolphin_i.h"
+
+static void dtmf_dolphin_scene_start_main_menu_enter_callback(void* context, uint32_t index) {
+    DTMFDolphinApp* app = context;
+    uint8_t cust_event = 255;
+    switch(index) {
+    case 0:
+        cust_event = DTMFDolphinEventStartDialer;
+        break;
+    case 1:
+        cust_event = DTMFDolphinEventStartBluebox;
+        break;
+    case 2:
+        cust_event = DTMFDolphinEventStartRedboxUS;
+        break;
+    case 3:
+        cust_event = DTMFDolphinEventStartRedboxUK;
+        break;
+    case 4:
+        cust_event = DTMFDolphinEventStartRedboxCA;
+        break;
+    case 5:
+        cust_event = DTMFDolphinEventStartMisc;
+        break;
+    default:
+        return;
+    }
+
+    view_dispatcher_send_custom_event(app->view_dispatcher, cust_event);
+}
+
+void dtmf_dolphin_scene_start_on_enter(void* context) {
+    DTMFDolphinApp* app = context;
+    VariableItemList* var_item_list = app->main_menu_list;
+
+    // VariableItem* item;
+    variable_item_list_set_enter_callback(
+        var_item_list, dtmf_dolphin_scene_start_main_menu_enter_callback, app);
+
+    variable_item_list_add(var_item_list, "Dialer", 0, NULL, context);
+    variable_item_list_add(var_item_list, "Bluebox", 0, NULL, context);
+    variable_item_list_add(var_item_list, "Redbox (US)", 0, NULL, context);
+    variable_item_list_add(var_item_list, "Redbox (UK)", 0, NULL, context);
+    variable_item_list_add(var_item_list, "Redbox (CA)", 0, NULL, context);
+    variable_item_list_add(var_item_list, "Misc", 0, NULL, context);
+
+    variable_item_list_set_selected_item(
+        var_item_list, scene_manager_get_scene_state(app->scene_manager, DTMFDolphinSceneStart));
+
+    view_dispatcher_switch_to_view(app->view_dispatcher, DTMFDolphinViewMainMenu);
+}
+
+bool dtmf_dolphin_scene_start_on_event(void* context, SceneManagerEvent event) {
+    DTMFDolphinApp* app = context;
+    UNUSED(app);
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        uint8_t sc_state;
+
+        switch(event.event) {
+        case DTMFDolphinEventStartDialer:
+            sc_state = DTMFDolphinSceneStateDialer;
+            break;
+        case DTMFDolphinEventStartBluebox:
+            sc_state = DTMFDolphinSceneStateBluebox;
+            break;
+        case DTMFDolphinEventStartRedboxUS:
+            sc_state = DTMFDolphinSceneStateRedboxUS;
+            break;
+        case DTMFDolphinEventStartRedboxUK:
+            sc_state = DTMFDolphinSceneStateRedboxUK;
+            break;
+        case DTMFDolphinEventStartRedboxCA:
+            sc_state = DTMFDolphinSceneStateRedboxCA;
+            break;
+        case DTMFDolphinEventStartMisc:
+            sc_state = DTMFDolphinSceneStateMisc;
+            break;
+        default:
+            return consumed;
+        }
+        scene_manager_set_scene_state(app->scene_manager, DTMFDolphinSceneDialer, sc_state);
+        scene_manager_next_scene(app->scene_manager, DTMFDolphinSceneDialer);
+
+        consumed = true;
+    }
+    return consumed;
+}
+
+void dtmf_dolphin_scene_start_on_exit(void* context) {
+    DTMFDolphinApp* app = context;
+    variable_item_list_reset(app->main_menu_list);
+}

dtmf_dolphin/views/dtmf_dolphin_common.h

@@ -0,0 +1,10 @@
+#pragma once
+#include "../dtmf_dolphin_event.h"
+#include "../dtmf_dolphin_data.h"
+#include "../dtmf_dolphin_audio.h"
+
+#define DTMF_DOLPHIN_NUMPAD_X 1
+#define DTMF_DOLPHIN_NUMPAD_Y 14
+#define DTMF_DOLPHIN_BUTTON_WIDTH 13
+#define DTMF_DOLPHIN_BUTTON_HEIGHT 13
+#define DTMF_DOLPHIN_BUTTON_PADDING 1 // all sides

dtmf_dolphin/views/dtmf_dolphin_dialer.c

@@ -0,0 +1,350 @@
+#include "dtmf_dolphin_dialer.h"
+
+#include <gui/elements.h>
+
+typedef struct DTMFDolphinDialer {
+    View* view;
+    DTMFDolphinDialerOkCallback callback;
+    void* context;
+} DTMFDolphinDialer;
+
+typedef struct {
+    DTMFDolphinToneSection section;
+    uint8_t row;
+    uint8_t col;
+    float freq1;
+    float freq2;
+    bool playing;
+    uint16_t pulses;
+    uint16_t pulse_ms;
+    uint16_t gap_ms;
+} DTMFDolphinDialerModel;
+
+static bool dtmf_dolphin_dialer_process_up(DTMFDolphinDialer* dtmf_dolphin_dialer);
+static bool dtmf_dolphin_dialer_process_down(DTMFDolphinDialer* dtmf_dolphin_dialer);
+static bool dtmf_dolphin_dialer_process_left(DTMFDolphinDialer* dtmf_dolphin_dialer);
+static bool dtmf_dolphin_dialer_process_right(DTMFDolphinDialer* dtmf_dolphin_dialer);
+static bool
+    dtmf_dolphin_dialer_process_ok(DTMFDolphinDialer* dtmf_dolphin_dialer, InputEvent* event);
+
+void draw_button(Canvas* canvas, uint8_t row, uint8_t col, bool invert) {
+    uint8_t left = DTMF_DOLPHIN_NUMPAD_X + // ((col + 1) * DTMF_DOLPHIN_BUTTON_PADDING) +
+                   (col * DTMF_DOLPHIN_BUTTON_WIDTH);
+    // (col * DTMF_DOLPHIN_BUTTON_PADDING);
+    uint8_t top = DTMF_DOLPHIN_NUMPAD_Y + // ((row + 1) * DTMF_DOLPHIN_BUTTON_PADDING) +
+                  (row * DTMF_DOLPHIN_BUTTON_HEIGHT);
+    // (row * DTMF_DOLPHIN_BUTTON_PADDING);
+
+    uint8_t span = dtmf_dolphin_get_tone_span(row, col);
+
+    if(span == 0) {
+        return;
+    }
+
+    canvas_set_color(canvas, ColorBlack);
+
+    if(invert)
+        canvas_draw_rbox(
+            canvas,
+            left,
+            top,
+            (DTMF_DOLPHIN_BUTTON_WIDTH * span) - (DTMF_DOLPHIN_BUTTON_PADDING * 2),
+            DTMF_DOLPHIN_BUTTON_HEIGHT - (DTMF_DOLPHIN_BUTTON_PADDING * 2),
+            2);
+    else
+        canvas_draw_rframe(
+            canvas,
+            left,
+            top,
+            (DTMF_DOLPHIN_BUTTON_WIDTH * span) - (DTMF_DOLPHIN_BUTTON_PADDING * 2),
+            DTMF_DOLPHIN_BUTTON_HEIGHT - (DTMF_DOLPHIN_BUTTON_PADDING * 2),
+            2);
+
+    if(invert) canvas_invert_color(canvas);
+
+    canvas_set_font(canvas, FontSecondary);
+    // canvas_set_color(canvas, invert ? ColorWhite : ColorBlack);
+    canvas_draw_str_aligned(
+        canvas,
+        left - 1 + (int)((DTMF_DOLPHIN_BUTTON_WIDTH * span) / 2),
+        top + (int)(DTMF_DOLPHIN_BUTTON_HEIGHT / 2),
+        AlignCenter,
+        AlignCenter,
+        dtmf_dolphin_data_get_tone_name(row, col));
+
+    if(invert) canvas_invert_color(canvas);
+}
+
+void draw_dialer(Canvas* canvas, void* _model) {
+    DTMFDolphinDialerModel* model = _model;
+    uint8_t max_rows;
+    uint8_t max_cols;
+    uint8_t max_span;
+    dtmf_dolphin_tone_get_max_pos(&max_rows, &max_cols, &max_span);
+
+    canvas_set_font(canvas, FontSecondary);
+
+    for(int r = 0; r < max_rows; r++) {
+        for(int c = 0; c < max_cols; c++) {
+            if(model->row == r && model->col == c)
+                draw_button(canvas, r, c, true);
+            else
+                draw_button(canvas, r, c, false);
+        }
+    }
+}
+
+void update_frequencies(DTMFDolphinDialerModel* model) {
+    dtmf_dolphin_data_get_tone_frequencies(&model->freq1, &model->freq2, model->row, model->col);
+    dtmf_dolphin_data_get_filter_data(
+        &model->pulses, &model->pulse_ms, &model->gap_ms, model->row, model->col);
+}
+
+static void dtmf_dolphin_dialer_draw_callback(Canvas* canvas, void* _model) {
+    DTMFDolphinDialerModel* model = _model;
+    if(model->playing) {
+        // Leverage the prioritized draw callback to handle
+        // the DMA so that it doesn't skip.
+        dtmf_dolphin_audio_handle_tick();
+        // Don't do any drawing if audio is playing.
+        canvas_set_font(canvas, FontPrimary);
+        elements_multiline_text_aligned(
+            canvas,
+            canvas_width(canvas) / 2,
+            canvas_height(canvas) / 2,
+            AlignCenter,
+            AlignCenter,
+            "Playing Tones");
+        return;
+    }
+    update_frequencies(model);
+    uint8_t max_rows = 0;
+    uint8_t max_cols = 0;
+    uint8_t max_span = 0;
+    dtmf_dolphin_tone_get_max_pos(&max_rows, &max_cols, &max_span);
+
+    canvas_set_font(canvas, FontPrimary);
+    elements_multiline_text(canvas, 2, 10, dtmf_dolphin_data_get_current_section_name());
+    canvas_draw_line(
+        canvas,
+        (max_span * DTMF_DOLPHIN_BUTTON_WIDTH) + 1,
+        0,
+        (max_span * DTMF_DOLPHIN_BUTTON_WIDTH) + 1,
+        canvas_height(canvas));
+    elements_multiline_text(canvas, (max_span * DTMF_DOLPHIN_BUTTON_WIDTH) + 4, 10, "Detail");
+    canvas_draw_line(
+        canvas, 0, DTMF_DOLPHIN_NUMPAD_Y - 3, canvas_width(canvas), DTMF_DOLPHIN_NUMPAD_Y - 3);
+    // elements_multiline_text_aligned(canvas, 64, 2, AlignCenter, AlignTop, "Dialer Mode");
+
+    draw_dialer(canvas, model);
+
+    FuriString* output = furi_string_alloc();
+
+    if(model->freq1 && model->freq2) {
+        furi_string_cat_printf(
+            output,
+            "Dual Tone\nF1: %u Hz\nF2: %u Hz\n",
+            (unsigned int)model->freq1,
+            (unsigned int)model->freq2);
+    } else if(model->freq1) {
+        furi_string_cat_printf(output, "Single Tone\nF: %u Hz\n", (unsigned int)model->freq1);
+    }
+
+    canvas_set_font(canvas, FontSecondary);
+    canvas_set_color(canvas, ColorBlack);
+    if(model->pulse_ms) {
+        furi_string_cat_printf(output, "P: %u * %u ms\n", model->pulses, model->pulse_ms);
+    }
+    if(model->gap_ms) {
+        furi_string_cat_printf(output, "Gaps: %u ms\n", model->gap_ms);
+    }
+    elements_multiline_text(
+        canvas, (max_span * DTMF_DOLPHIN_BUTTON_WIDTH) + 4, 21, furi_string_get_cstr(output));
+
+    furi_string_free(output);
+}
+
+static bool dtmf_dolphin_dialer_input_callback(InputEvent* event, void* context) {
+    furi_assert(context);
+    DTMFDolphinDialer* dtmf_dolphin_dialer = context;
+    bool consumed = false;
+
+    if(event->type == InputTypeShort) {
+        if(event->key == InputKeyRight) {
+            consumed = dtmf_dolphin_dialer_process_right(dtmf_dolphin_dialer);
+        } else if(event->key == InputKeyLeft) {
+            consumed = dtmf_dolphin_dialer_process_left(dtmf_dolphin_dialer);
+        } else if(event->key == InputKeyUp) {
+            consumed = dtmf_dolphin_dialer_process_up(dtmf_dolphin_dialer);
+        } else if(event->key == InputKeyDown) {
+            consumed = dtmf_dolphin_dialer_process_down(dtmf_dolphin_dialer);
+        }
+
+    } else if(event->key == InputKeyOk) {
+        consumed = dtmf_dolphin_dialer_process_ok(dtmf_dolphin_dialer, event);
+    }
+
+    return consumed;
+}
+
+static bool dtmf_dolphin_dialer_process_up(DTMFDolphinDialer* dtmf_dolphin_dialer) {
+    with_view_model(
+        dtmf_dolphin_dialer->view,
+        DTMFDolphinDialerModel * model,
+        {
+            uint8_t span = 0;
+            uint8_t cursor = model->row;
+            while(span == 0 && cursor > 0) {
+                cursor--;
+                span = dtmf_dolphin_get_tone_span(cursor, model->col);
+            }
+            if(span != 0) {
+                model->row = cursor;
+            }
+        },
+        true);
+    return true;
+}
+
+static bool dtmf_dolphin_dialer_process_down(DTMFDolphinDialer* dtmf_dolphin_dialer) {
+    uint8_t max_rows = 0;
+    uint8_t max_cols = 0;
+    uint8_t max_span = 0;
+    dtmf_dolphin_tone_get_max_pos(&max_rows, &max_cols, &max_span);
+
+    with_view_model(
+        dtmf_dolphin_dialer->view,
+        DTMFDolphinDialerModel * model,
+        {
+            uint8_t span = 0;
+            uint8_t cursor = model->row;
+            while(span == 0 && cursor < max_rows - 1) {
+                cursor++;
+                span = dtmf_dolphin_get_tone_span(cursor, model->col);
+            }
+            if(span != 0) {
+                model->row = cursor;
+            }
+        },
+        true);
+    return true;
+}
+
+static bool dtmf_dolphin_dialer_process_left(DTMFDolphinDialer* dtmf_dolphin_dialer) {
+    with_view_model(
+        dtmf_dolphin_dialer->view,
+        DTMFDolphinDialerModel * model,
+        {
+            uint8_t span = 0;
+            uint8_t cursor = model->col;
+            while(span == 0 && cursor > 0) {
+                cursor--;
+                span = dtmf_dolphin_get_tone_span(model->row, cursor);
+            }
+            if(span != 0) {
+                model->col = cursor;
+            }
+        },
+        true);
+    return true;
+}
+
+static bool dtmf_dolphin_dialer_process_right(DTMFDolphinDialer* dtmf_dolphin_dialer) {
+    uint8_t max_rows = 0;
+    uint8_t max_cols = 0;
+    uint8_t max_span = 0;
+    dtmf_dolphin_tone_get_max_pos(&max_rows, &max_cols, &max_span);
+
+    with_view_model(
+        dtmf_dolphin_dialer->view,
+        DTMFDolphinDialerModel * model,
+        {
+            uint8_t span = 0;
+            uint8_t cursor = model->col;
+            while(span == 0 && cursor < max_cols - 1) {
+                cursor++;
+                span = dtmf_dolphin_get_tone_span(model->row, cursor);
+            }
+            if(span != 0) {
+                model->col = cursor;
+            }
+        },
+        true);
+    return true;
+}
+
+static bool
+    dtmf_dolphin_dialer_process_ok(DTMFDolphinDialer* dtmf_dolphin_dialer, InputEvent* event) {
+    bool consumed = false;
+
+    with_view_model(
+        dtmf_dolphin_dialer->view,
+        DTMFDolphinDialerModel * model,
+        {
+            if(event->type == InputTypePress) {
+                model->playing = dtmf_dolphin_audio_play_tones(
+                    model->freq1, model->freq2, model->pulses, model->pulse_ms, model->gap_ms);
+            } else if(event->type == InputTypeRelease) {
+                model->playing = !dtmf_dolphin_audio_stop_tones();
+            }
+        },
+        true);
+
+    return consumed;
+}
+
+static void dtmf_dolphin_dialer_enter_callback(void* context) {
+    furi_assert(context);
+    DTMFDolphinDialer* dtmf_dolphin_dialer = context;
+
+    with_view_model(
+        dtmf_dolphin_dialer->view,
+        DTMFDolphinDialerModel * model,
+        {
+            model->col = 0;
+            model->row = 0;
+            model->section = 0;
+            model->freq1 = 0.0;
+            model->freq2 = 0.0;
+            model->playing = false;
+        },
+        true);
+}
+
+DTMFDolphinDialer* dtmf_dolphin_dialer_alloc() {
+    DTMFDolphinDialer* dtmf_dolphin_dialer = malloc(sizeof(DTMFDolphinDialer));
+
+    dtmf_dolphin_dialer->view = view_alloc();
+    view_allocate_model(
+        dtmf_dolphin_dialer->view, ViewModelTypeLocking, sizeof(DTMFDolphinDialerModel));
+
+    with_view_model(
+        dtmf_dolphin_dialer->view,
+        DTMFDolphinDialerModel * model,
+        {
+            model->col = 0;
+            model->row = 0;
+            model->section = 0;
+            model->freq1 = 0.0;
+            model->freq2 = 0.0;
+            model->playing = false;
+        },
+        true);
+
+    view_set_context(dtmf_dolphin_dialer->view, dtmf_dolphin_dialer);
+    view_set_draw_callback(dtmf_dolphin_dialer->view, dtmf_dolphin_dialer_draw_callback);
+    view_set_input_callback(dtmf_dolphin_dialer->view, dtmf_dolphin_dialer_input_callback);
+    view_set_enter_callback(dtmf_dolphin_dialer->view, dtmf_dolphin_dialer_enter_callback);
+    return dtmf_dolphin_dialer;
+}
+
+void dtmf_dolphin_dialer_free(DTMFDolphinDialer* dtmf_dolphin_dialer) {
+    furi_assert(dtmf_dolphin_dialer);
+    view_free(dtmf_dolphin_dialer->view);
+    free(dtmf_dolphin_dialer);
+}
+
+View* dtmf_dolphin_dialer_get_view(DTMFDolphinDialer* dtmf_dolphin_dialer) {
+    furi_assert(dtmf_dolphin_dialer);
+    return dtmf_dolphin_dialer->view;
+}

dtmf_dolphin/views/dtmf_dolphin_dialer.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <gui/view.h>
+#include "dtmf_dolphin_common.h"
+
+typedef struct DTMFDolphinDialer DTMFDolphinDialer;
+typedef void (*DTMFDolphinDialerOkCallback)(InputType type, void* context);
+
+DTMFDolphinDialer* dtmf_dolphin_dialer_alloc();
+
+void dtmf_dolphin_dialer_free(DTMFDolphinDialer* dtmf_dolphin_dialer);
+
+View* dtmf_dolphin_dialer_get_view(DTMFDolphinDialer* dtmf_dolphin_dialer);
+
+void dtmf_dolphin_dialer_set_ok_callback(
+    DTMFDolphinDialer* dtmf_dolphin_dialer,
+    DTMFDolphinDialerOkCallback callback,
+    void* context);