Added support for the T-Deck internal speaker! Boot sounds added, notification sounds incomming.
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@ -51,7 +51,7 @@ The device will scan for WiFi networks on boot. Once the list is displayed, you
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- [X] Screen timeout on inactivity *(default 30 seconds)*
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- [ ] Keyboard backlight timeout with screen timeout
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- [ ] Trackball support
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- [ ] Speaker support
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- [X] Speaker support
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- [ ] GPS support
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- [ ] Lora support
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- [ ] BLE support
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@ -24,6 +24,4 @@ build_flags =
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-DARDUINO_USB_CDC_ON_BOOT=1
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-DDISABLE_ALL_LIBRARY_WARNINGS
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lib_deps =
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;mikalhart/TinyGPSPlus@^1.0.2
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marian-craciunescu/ESP32Ping@^1.7.0
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;sandeepmistry/LoRa
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lib_extra_dirs = lib
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151
src/Speaker.h
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151
src/Speaker.h
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@ -0,0 +1,151 @@
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#pragma once
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#include <Arduino.h>
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#include <driver/i2s.h>
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#include "pins.h"
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#define BOARD_I2S_PORT I2S_NUM_0
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#define SAMPLE_RATE 44100
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const float NOTE_FREQS[] = {
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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, // C4 to B4
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523.25, 554.37, 587.33, 622.25, 659.25, 698.46, 739.99, 783.99, 830.61, 880.00, 932.33, 987.77, // C5 to B5
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1046.50, 1108.73, 1174.66, 1244.51, 1318.51, 1396.91, 1480.00, 1568.00, 1661.22, 1760.00, 1864.66, 1975.53, // C6 to B6
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2093.00, 2217.46, 2349.32, 2489.02, 2637.02, 2793.83, 2960.00, 3136.00, 3322.44, 3520.00, 3729.31, 3951.07 // C7 to B7
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};
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float getNoteFrequency(char note, int octave) {
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if (note == 'p') return 0; // Pause
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int noteIndex = 0;
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switch (note) {
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case 'c': noteIndex = 0; break;
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case 'd': noteIndex = 2; break;
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case 'e': noteIndex = 4; break;
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case 'f': noteIndex = 5; break;
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case 'g': noteIndex = 7; break;
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case 'a': noteIndex = 9; break;
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case 'b': noteIndex = 11; break;
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default: return 0;
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}
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return NOTE_FREQS[noteIndex + ((octave - 4) * 12)];
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}
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void setupI2S() {
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i2s_config_t i2s_config = {
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.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX),
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.sample_rate = SAMPLE_RATE,
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.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,
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.channel_format = I2S_CHANNEL_FMT_ONLY_LEFT,
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.communication_format = I2S_COMM_FORMAT_STAND_I2S,
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.intr_alloc_flags = 0, // Default interrupt priority
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.dma_buf_count = 8,
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.dma_buf_len = 64,
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.use_apll = false,
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.tx_desc_auto_clear = true,
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.fixed_mclk = 0
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};
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i2s_pin_config_t pin_config = {
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.bck_io_num = BOARD_I2S_BCK,
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.ws_io_num = BOARD_I2S_WS,
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.data_out_num = BOARD_I2S_DOUT,
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.data_in_num = I2S_PIN_NO_CHANGE
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};
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i2s_driver_install(BOARD_I2S_PORT, &i2s_config, 0, NULL);
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i2s_set_pin(BOARD_I2S_PORT, &pin_config);
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i2s_set_clk(BOARD_I2S_PORT, SAMPLE_RATE, I2S_BITS_PER_SAMPLE_16BIT, I2S_CHANNEL_MONO);
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}
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void playTone(float frequency, int duration, int volume = 16383) {
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volume = constrain(volume, 0, 32767); // Max volume is 32767, we default to half volume if not specified
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const int wave_period = SAMPLE_RATE / frequency;
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int16_t sample_buffer[wave_period];
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for (int i = 0; i < wave_period; ++i)
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sample_buffer[i] = (i < wave_period / 2) ? volume : -volume;
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int total_samples = SAMPLE_RATE * duration / 1000;
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int samples_written = 0;
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while (samples_written < total_samples) {
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int to_write = min(wave_period, total_samples - samples_written);
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i2s_write(BOARD_I2S_PORT, sample_buffer, to_write * sizeof(int16_t), (size_t *)&to_write, portMAX_DELAY);
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samples_written += to_write;
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}
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}
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void playRTTTL(const char* rtttl, int volume = 16383, int bpm = -1) {
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int default_duration = 4;
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int default_octave = 6;
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int internal_bpm = 63;
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const char* p = rtttl;
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// Skip name
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while (*p && *p != ':') p++;
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if (*p == ':') p++;
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while (*p && *p != ':') {
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char param = *p++;
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if (*p == '=') p++;
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int value = atoi(p);
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while (*p && isdigit(*p)) p++;
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if (*p == ',') p++;
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switch (param) {
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case 'd': default_duration = value; break;
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case 'o': default_octave = value; break;
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case 'b': internal_bpm = value; break;
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}
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}
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if (*p == ':') p++;
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if (bpm != -1)
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internal_bpm = bpm;
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int beat_duration = 60000 / internal_bpm;
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while (*p) {
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int duration = 0;
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if (isdigit(*p)) {
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duration = atoi(p);
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while (isdigit(*p)) p++;
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} else {
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duration = default_duration;
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}
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char note = *p++;
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int frequency = getNoteFrequency(note, default_octave);
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if (*p == '#') {
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frequency = getNoteFrequency(note + 1, default_octave);
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p++;
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}
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int octave = default_octave;
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if (isdigit(*p))
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octave = *p++ - '0';
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if (*p == '.') {
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duration = duration * 1.5;
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p++;
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}
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int note_duration = (beat_duration * 4) / duration;
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if (frequency > 0)
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playTone(frequency, note_duration, volume);
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else
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delay(note_duration);
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if (*p == ',') p++;
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}
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}
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10
src/main.ino
10
src/main.ino
@ -14,8 +14,9 @@
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#include <Wire.h>
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// Local includes
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#include "boot_screen.h"
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#include "bootScreen.h"
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#include "pins.h"
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#include "Speaker.h"
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// Constants
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@ -81,7 +82,6 @@ bool screenOn = true;
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int selectedNetworkIndex = 0;
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// Main functions ---------------------------------------------------------------------------------
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void displayXBM() {
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tft.fillScreen(TFT_BLACK);
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@ -113,6 +113,7 @@ void displayXBM() {
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void setup() {
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// Initialize serial communication
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Serial.begin(115200);
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while (!Serial);
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Serial.println("Booting device...");
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// Turn on the power to the board
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@ -132,6 +133,11 @@ void setup() {
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tft.invertDisplay(1);
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Serial.println("TFT initialized");
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// Initialize the speaker
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setupI2S(); // Do we want to keep this open or uninstall after each use to keep resources free?
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const char* rtttl_boot = "ff6_victory:d=4,o=5,b=100:32d6,32p,32d6,32p,32d6,32p,d6,a#,c6,16d6,8p,16c6,2d6"; // This will go in preferences soon
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playRTTTL(rtttl_boot);
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// Display the boot screen
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displayXBM();
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// Board pin definitions ------------------------
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#define BOARD_POWERON 10
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// Speaker
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#define BOARD_I2S_WS 5
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#define BOARD_I2S_BCK 7
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#define BOARD_I2S_DOUT 6
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#define BOARD_I2S_BCK 7
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#define BOARD_I2C_SDA 18
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#define BOARD_I2C_SCL 8
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@ -58,4 +59,3 @@
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#define READS 20 // Number of readings for averaging
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#define LILYGO_KB_SLAVE_ADDRESS 0x55
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