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Improved RTTTL processing with the ESP8266Audio library

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This commit is contained in:
Dionysus 2024-06-05 18:07:54 -04:00
parent d4911ee2d3
commit 0cfe90ff99
Signed by: acidvegas
GPG Key ID: EF4B922DB85DC9DE
3 changed files with 22 additions and 98 deletions
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2
platformio.ini
View File

@ -24,4 +24,6 @@ build_flags =
-DARDUINO_USB_CDC_ON_BOOT=1
-DDISABLE_ALL_LIBRARY_WARNINGS
lib_deps =
ArduinoWebsockets
earlephilhower/ESP8266Audio
lib_extra_dirs = lib

110
src/Speaker.h
View File

@ -2,6 +2,9 @@
#include <Arduino.h>
#include <driver/i2s.h>
#include <AudioGeneratorRTTTL.h>
#include <AudioOutputI2S.h>
#include <AudioFileSourcePROGMEM.h>
#include "pins.h"
@ -9,31 +12,6 @@
#define SAMPLE_RATE 44100
const float NOTE_FREQS[] = {
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
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
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
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
};
float getNoteFrequency(char note, int octave) {
if (note == 'p') return 0; // Pause
int noteIndex = 0;
switch (note) {
case 'c': noteIndex = 0; break;
case 'd': noteIndex = 2; break;
case 'e': noteIndex = 4; break;
case 'f': noteIndex = 5; break;
case 'g': noteIndex = 7; break;
case 'a': noteIndex = 9; break;
case 'b': noteIndex = 11; break;
default: return 0;
}
return NOTE_FREQS[noteIndex + ((octave - 4) * 12)];
}
void setupI2S() {
i2s_config_t i2s_config = {
.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX),
@ -41,7 +19,7 @@ void setupI2S() {
.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,
.channel_format = I2S_CHANNEL_FMT_ONLY_LEFT,
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
.intr_alloc_flags = 0, // Default interrupt priority
.intr_alloc_flags = 0,
.dma_buf_count = 8,
.dma_buf_len = 64,
.use_apll = false,
@ -61,9 +39,8 @@ void setupI2S() {
i2s_set_clk(BOARD_I2S_PORT, SAMPLE_RATE, I2S_BITS_PER_SAMPLE_16BIT, I2S_CHANNEL_MONO);
}
void playTone(float frequency, int duration, int volume = 16383) {
volume = constrain(volume, 0, 32767); // Max volume is 32767, we default to half volume if not specified
volume = constrain(volume, 0, 32767);
const int wave_period = SAMPLE_RATE / frequency;
int16_t sample_buffer[wave_period];
@ -80,77 +57,20 @@ void playTone(float frequency, int duration, int volume = 16383) {
}
}
void playRTTTL(const char* rtttl) {
static AudioGeneratorRTTTL *rtttlGenerator = new AudioGeneratorRTTTL();
static AudioOutputI2S *audioOutput = new AudioOutputI2S();
static AudioFileSourcePROGMEM *fileSource = new AudioFileSourcePROGMEM(rtttl, strlen(rtttl));
void playRTTTL(const char* rtttl, int volume = 16383, int bpm = -1) {
int default_duration = 4;
int default_octave = 6;
int internal_bpm = 63;
const char* p = rtttl;
// Skip name
while (*p && *p != ':') p++;
if (*p == ':') p++;
while (*p && *p != ':') {
char param = *p++;
if (*p == '=') p++;
int value = atoi(p);
while (*p && isdigit(*p)) p++;
if (*p == ',') p++;
switch (param) {
case 'd': default_duration = value; break;
case 'o': default_octave = value; break;
case 'b': internal_bpm = value; break;
}
}
if (*p == ':') p++;
if (bpm != -1)
internal_bpm = bpm;
int beat_duration = 60000 / internal_bpm;
while (*p) {
int duration = 0;
if (isdigit(*p)) {
duration = atoi(p);
while (isdigit(*p)) p++;
} else {
duration = default_duration;
}
char note = *p++;
int frequency = getNoteFrequency(note, default_octave);
if (*p == '#') {
frequency = getNoteFrequency(note + 1, default_octave);
p++;
}
int octave = default_octave;
if (isdigit(*p))
octave = *p++ - '0';
if (*p == '.') {
duration = duration * 1.5;
p++;
}
int note_duration = (beat_duration * 4) / duration;
if (frequency > 0)
playTone(frequency, note_duration, volume);
else
delay(note_duration);
if (*p == ',') p++;
audioOutput->begin();
rtttlGenerator->begin(fileSource, audioOutput);
while (rtttlGenerator->isRunning()) {
rtttlGenerator->loop();
}
rtttlGenerator->stop();
fileSource->close();
}
void playNotificationSound() {
playTone(1000, 200);
delay(100);

6
src/main.ino
View File

@ -113,7 +113,6 @@ void displayXBM() {
void setup() {
// Initialize serial communication
Serial.begin(115200);
while (!Serial);
Serial.println("Booting device...");
// Turn on the power to the board
@ -141,7 +140,8 @@ void setup() {
// Initialize the speaker
setupI2S(); // Do we want to keep this open or uninstall after each use to keep resources free?
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
//const char* rtttl_boot = "ff6_victory:d=4,o=5,b=120:32d6,32p,32d6,32p,32d6,32p,d6,a#,c6,16d6,8p,16c6,2d6"; // This will go in preferences soon
const char* rtttl_boot = "TakeOnMe:d=4,o=4,b=375:8f#5,8f#5,8f#5,8d5,8p,8b,8p,8e5,8p,8e5,8p,8e5,8g#5,8g#5,8a5,8b5";
playRTTTL(rtttl_boot);
// Setup the WiFi
@ -1204,6 +1204,8 @@ void parseAndDisplay(String line) {
addLine("ERROR", "ERR_ERRONEUSNICKNAME", "error", TFT_RED, TFT_DARKGREY);
} else if (command == "433") { // ERR_NICKNAMEINUSE
addLine("ERROR", "ERR_NICKNAMEINUSE", "error", TFT_RED, TFT_DARKGREY);
irc_nickname = "ACID_" + String(random(1000, 9999)); // Generate a random nickname
sendIRC("NICK " + irc_nickname); // Attempt to change to the random nickname
}
}
}