97 lines
3.3 KiB
Markdown
97 lines
3.3 KiB
Markdown
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# ESP32-audioI2S
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Play mp3 files from SD card via I2S with external hardware.
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HELIX-mp3 and -aac decoder is included.
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Works with MAX98357A (3 Watt amplifier with DAC), connected three lines (DOUT, BLCK, LRC) to I2S.
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For stereo are two MAX98357A necessary. AudioI2S works with UDA1334A (Adafruit I2S Stereo Decoder Breakout Board) and PCM1502A.
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Other HW may work but not tested. Plays also icy-streams (mp3 only) and GoogleTTS. Can compiled with Arduino IDE.
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```` c++
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#include "Arduino.h"
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#include "WiFi.h"
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#include "src/audioI2S/Audio.h"
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#include "SD.h"
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#include "FS.h"
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// Digital I/O used
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#define SD_CS 5
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#define SPI_MOSI 23
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#define SPI_MISO 19
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#define SPI_SCK 18
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#define I2S_DOUT 25
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#define I2S_BCLK 27
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#define I2S_LRC 26
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Audio audio;
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String ssid = "*******";
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String password = "*******";
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void setup() {
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pinMode(SD_CS, OUTPUT); digitalWrite(SD_CS, HIGH);
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SPI.begin(SPI_SCK, SPI_MISO, SPI_MOSI);
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Serial.begin(115200);
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SD.begin(SD_CS);
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WiFi.disconnect();
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WiFi.mode(WIFI_STA);
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WiFi.begin(ssid.c_str(), password.c_str());
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while (WiFi.status() != WL_CONNECTED) delay(1500);
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audio.setPinout(I2S_BCLK, I2S_LRC, I2S_DOUT);
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audio.setVolume(21); // 0...21
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// audio.connecttoSD("/320k_test.mp3");
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// audio.connecttohost("http://www.wdr.de/wdrlive/media/einslive.m3u");
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// audio.connecttohost("http://macslons-irish-pub-radio.com/media.asx");
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// audio.connecttohost("http://mp3.ffh.de/radioffh/hqlivestream.aac"); // 128k aac
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audio.connecttohost("http://mp3.ffh.de/radioffh/hqlivestream.mp3"); // 128k mp3
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// audio.connecttospeech("Wenn die Hunde schlafen, kann der Wolf gut Schafe stehlen.", "de");
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// audio.connecttohost("http://media.ndr.de/download/podcasts/podcast4161/AU-20190404-0844-1700.mp3"); // podcast
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}
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void loop()
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{
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audio.loop();
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}
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// optional
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void audio_info(const char *info){
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Serial.print("info "); Serial.println(info);
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}
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void audio_id3data(const char *info){ //id3 metadata
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Serial.print("id3data ");Serial.println(info);
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}
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void audio_eof_mp3(const char *info){ //end of file
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Serial.print("eof_mp3 ");Serial.println(info);
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}
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void audio_showstation(const char *info){
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Serial.print("station ");Serial.println(info);
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}
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void audio_showstreaminfo(const char *info){
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Serial.print("streaminfo ");Serial.println(info);
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}
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void audio_showstreamtitle(const char *info){
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Serial.print("streamtitle ");Serial.println(info);
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}
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void audio_bitrate(const char *info){
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Serial.print("bitrate ");Serial.println(info);
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}
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void audio_commercial(const char *info){ //duration in sec
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Serial.print("commercial ");Serial.println(info);
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}
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void audio_icyurl(const char *info){ //homepage
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Serial.print("icyurl ");Serial.println(info);
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}
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void audio_lasthost(const char *info){ //stream URL played
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Serial.print("lasthost ");Serial.println(info);
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}
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void audio_eof_speech(const char *info){
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Serial.print("eof_speech ");Serial.println(info);
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}
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````
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Breadboard
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Wiring
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Impulse diagram
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