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georgikgeorgik
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add synt_piano
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‎README.md‎

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@@ -21,6 +21,9 @@ popd
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pushd apps/calculator
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esptool.py --chip esp32s3 --baud 921600 --before default_reset --after hard_reset write_flash 0x7A0000 build/calculator.bin
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popd
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pushd apps/synth_piano
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esptool.py --chip esp32s3 --baud 921600 --before default_reset --after hard_reset write_flash 0xA60000 build/synth_piano.bin
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popd
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```
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## Build

‎apps/synth_piano/CMakeLists.txt‎

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# The following five lines of boilerplate have to be in your project's
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# CMakeLists in this exact order for cmake to work correctly
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cmake_minimum_required(VERSION 3.16)
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include($ENV{IDF_PATH}/tools/cmake/project.cmake)
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project(synth_piano)

‎apps/synth_piano/main/CMakeLists.txt‎

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idf_component_register(SRCS "synth_piano.c"
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INCLUDE_DIRS "."
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REQUIRES app_update)

‎apps/synth_piano/main/idf_component.yml‎

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## IDF Component Manager Manifest File
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dependencies:
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espressif/esp-box: "^3.1.0"
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#espressif/esp-box-3: "^1.2.0"
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# Workaround for i2c: CONFLICT! driver_ng is not allowed to be used with this old driver
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esp_codec_dev:
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public: true
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version: "==1.1.0"
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## Required IDF version
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idf:
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version: ">=5.0.0"

‎apps/synth_piano/main/synth_piano.c‎

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#include <stdio.h>
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#include <math.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_log.h"
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#include "esp_system.h"
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#include "lvgl.h"
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#include "bsp/esp-bsp.h"
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#include "esp_timer.h"
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#include "driver/i2s.h"
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#include "esp_ota_ops.h"
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#define TAG "SynthPiano"
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#define SAMPLE_RATE 44100
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#define DEFAULT_VOLUME 90
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static lv_obj_t *octave_label;
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static int current_octave = 4;
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static int last_note_index = -1;
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static int last_octave_event = -1;
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static esp_codec_dev_handle_t spk_codec_dev = NULL;
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static QueueHandle_t tone_queue;
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typedef struct {
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float frequency;
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int duration_ms;
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} tone_t;
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static void update_display() {
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char buffer[16];
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snprintf(buffer, sizeof(buffer), "Octave: %d", current_octave);
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bsp_display_lock(0);
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lv_label_set_text(octave_label, buffer);
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bsp_display_unlock();
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}
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static void play_tone(float frequency, int duration_ms) {
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const int sample_rate = SAMPLE_RATE;
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const int num_samples = (sample_rate * duration_ms) / 1000;
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const float amplitude = 1.0;
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int16_t *samples = malloc(num_samples * sizeof(int16_t));
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if (!samples) {
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ESP_LOGE(TAG, "Failed to allocate memory for samples");
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return;
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}
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for (int i = 0; i < num_samples; ++i) {
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samples[i] = (int16_t)(amplitude * INT16_MAX * sinf(2.0f * M_PI * frequency * i / sample_rate));
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}
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esp_codec_dev_write(spk_codec_dev, samples, num_samples * sizeof(int16_t));
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vTaskDelay(pdMS_TO_TICKS(duration_ms)); // Ensure the tone plays for the specified duration
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free(samples);
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}
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static void tone_task(void *param) {
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tone_t tone;
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while (1) {
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if (xQueueReceive(tone_queue, &tone, portMAX_DELAY)) {
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play_tone(tone.frequency, tone.duration_ms);
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}
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}
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}
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static void note_event_cb(lv_event_t *e) {
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lv_obj_t *btn = lv_event_get_target(e);
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const char *txt = lv_btnmatrix_get_btn_text(btn, lv_btnmatrix_get_selected_btn(btn));
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float frequencies[12] = {
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261.63, 277.18, 293.66, 311.13, 329.63, 349.23, 369.99, 392.00, 415.30, 440.00, 466.16, 493.88
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};
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int note_index = atoi(txt);
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if (note_index == last_note_index) {
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return; // Ignore repeated events for the same note
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}
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last_note_index = note_index;
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if (note_index >= 0 && note_index < 12) {
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float frequency = frequencies[note_index] * powf(2.0f, current_octave - 4);
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tone_t tone = { .frequency = frequency, .duration_ms = 250 };
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xQueueSend(tone_queue, &tone, portMAX_DELAY); // Send tone to queue
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}
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}
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static void octave_event_cb(lv_event_t *e) {
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lv_obj_t *btn = lv_event_get_target(e);
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const char *txt = lv_btnmatrix_get_btn_text(btn, lv_btnmatrix_get_selected_btn(btn));
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if ((last_octave_event == 0 && strcmp(txt, "Up") == 0) || (last_octave_event == 1 && strcmp(txt, "Down") == 0)) {
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return; // Ignore repeated events for the same octave button
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}
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if (strcmp(txt, "Up") == 0) {
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last_octave_event = 0;
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current_octave = (current_octave < 8) ? current_octave + 1 : current_octave;
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} else if (strcmp(txt, "Down") == 0) {
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last_octave_event = 1;
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current_octave = (current_octave > 0) ? current_octave - 1 : current_octave;
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}
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update_display();
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}
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void app_audio_init(void)
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{
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/* Initialize speaker */
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spk_codec_dev = bsp_audio_codec_speaker_init();
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assert(spk_codec_dev);
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/* Speaker output volume */
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esp_codec_dev_set_out_vol(spk_codec_dev, DEFAULT_VOLUME);
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esp_codec_dev_open(spk_codec_dev, &(esp_codec_dev_sample_info_t){
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.sample_rate = SAMPLE_RATE,
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.channel = 1,
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.bits_per_sample = 16,
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});
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}
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void reset_to_factory_app() {
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// Get the partition structure for the factory partition
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const esp_partition_t *factory_partition = esp_partition_find_first(ESP_PARTITION_TYPE_APP, ESP_PARTITION_SUBTYPE_APP_FACTORY, NULL);
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if (factory_partition != NULL) {
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if (esp_ota_set_boot_partition(factory_partition) == ESP_OK) {
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printf("Set boot partition to factory, restarting now.\n");
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} else {
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printf("Failed to set boot partition to factory.\n");
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}
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} else {
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printf("Factory partition not found.\n");
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}
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fflush(stdout);
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}
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void app_main(void) {
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// Reset to factory app for the next boot.
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// It should return to graphical bootloader.
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reset_to_factory_app();
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// Initialize the BSP
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bsp_i2c_init();
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bsp_display_start();
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lv_init();
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app_audio_init();
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// Create a label for the octave
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octave_label = lv_label_create(lv_scr_act());
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lv_label_set_text(octave_label, "Octave: 4");
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lv_obj_align(octave_label, LV_ALIGN_TOP_LEFT, 0, 10);
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// Create a button matrix for the octave control
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static const char *octave_map[] = {
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"Up", "\n",
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"Down", ""
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};
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lv_obj_t *octave_btnm = lv_btnmatrix_create(lv_scr_act());
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lv_btnmatrix_set_map(octave_btnm, octave_map);
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lv_obj_set_size(octave_btnm, 150, 60);
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lv_obj_align(octave_btnm, LV_ALIGN_TOP_RIGHT, 0, 0);
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lv_obj_add_event_cb(octave_btnm, octave_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
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// Create a button matrix for the notes
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static const char *note_map[] = {
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"0", "1", "2", "3", "\n",
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"4", "5", "6", "7", "\n",
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"8", "9", "10", "11", ""
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};
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lv_obj_t *note_btnm = lv_btnmatrix_create(lv_scr_act());
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lv_btnmatrix_set_map(note_btnm, note_map);
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lv_obj_set_size(note_btnm, 320, 150);
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lv_obj_align(note_btnm, LV_ALIGN_CENTER, 0, 30);
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lv_obj_add_event_cb(note_btnm, note_event_cb, LV_EVENT_VALUE_CHANGED, NULL);
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// Create the tone queue
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tone_queue = xQueueCreate(10, sizeof(tone_t));
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assert(tone_queue != NULL);
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// Create the tone task
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xTaskCreate(tone_task, "tone_task", 2048, NULL, 5, NULL);
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bsp_display_backlight_on();
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while (1) {
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vTaskDelay(pdMS_TO_TICKS(1000));
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}
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}

‎main/CMakeLists.txt‎

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@@ -8,4 +8,5 @@ idf_component_register(SRCS
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lvgl_port_create_c_image("../resources/images/icon_tic_tac_toe.png" "images/gen/" "ARGB8888" "NONE")
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lvgl_port_create_c_image("../resources/images/icon_wifi_list.png" "images/gen/" "ARGB8888" "NONE")
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lvgl_port_create_c_image("../resources/images/icon_calculator.png" "images/gen/" "ARGB8888" "NONE")
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lvgl_port_create_c_image("../resources/images/icon_synth_piano.png" "images/gen/" "ARGB8888" "NONE")
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lvgl_port_add_images(${COMPONENT_LIB} "images/gen/")

‎main/bootloader_ui.c‎

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@@ -42,7 +42,7 @@ static lv_obj_t *g_group_list[3] = {0};
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LV_IMG_DECLARE(icon_tic_tac_toe)
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LV_IMG_DECLARE(icon_wifi_list)
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LV_IMG_DECLARE(icon_calculator)
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// LV_IMG_DECLARE(icon_app4)
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LV_IMG_DECLARE(icon_synth_piano)
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// LV_IMG_DECLARE(icon_app5)
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void ui_app1_start(void (*fn)(void));
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{ "Tic-Tac-Toe", (void *) &icon_tic_tac_toe, ui_app1_start, NULL},
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{ "Wi-Fi List", (void *) &icon_wifi_list, ui_app2_start, NULL},
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{ "Calculator", (void *) &icon_calculator, ui_app3_start, NULL},
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{ "App4", (void *) &icon_tic_tac_toe, ui_app4_start, NULL},
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{ "Piano", (void *) &icon_synth_piano, ui_app4_start, NULL},
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{ "App5", (void *) &icon_tic_tac_toe, ui_app5_start, NULL},
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};
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‎resources/images/icon_synth_piano.png‎

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