Interfacing UDA1334A I2S Stereo Decoder Module with ESP32

				
					//**********************************************************************************************************
//*    audioI2S-- I2S audiodecoder for ESP32,                                                              *
//**********************************************************************************************************
//
// first release on 11/2018
// Version 3  , Jul.02/2020
//
//
// THE SOFTWARE IS PROVIDED "AS IS" FOR PRIVATE USE ONLY, IT IS NOT FOR COMMERCIAL USE IN WHOLE OR PART OR CONCEPT.
// FOR PERSONAL USE IT IS SUPPLIED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHOR
// OR COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE
//

#include "Arduino.h"
#include "WiFiMulti.h"
#include "Audio.h"
#include "SPI.h"
#include "SD.h"
#include "FS.h"

// Digital I/O used
#define SD_CS          5
#define SPI_MOSI      23
#define SPI_MISO      19
#define SPI_SCK       18
#define I2S_DOUT      25
#define I2S_BCLK      27
#define I2S_LRC       26

Audio audio;
WiFiMulti wifiMulti;
String ssid =     "xxxxx";
String password = "xxxxx";


void setup() {
    pinMode(SD_CS, OUTPUT);      digitalWrite(SD_CS, HIGH);
    SPI.begin(SPI_SCK, SPI_MISO, SPI_MOSI);
    SPI.setFrequency(1000000);
    Serial.begin(115200);
    SD.begin(SD_CS);
    WiFi.mode(WIFI_STA);
    wifiMulti.addAP(ssid.c_str(), password.c_str());
    wifiMulti.run();
    if(WiFi.status() != WL_CONNECTED){
        WiFi.disconnect(true);
        wifiMulti.run();
    }
    audio.setPinout(I2S_BCLK, I2S_LRC, I2S_DOUT);
    audio.setVolume(12); // 0...21

//    audio.connecttoFS(SD, "/320k_test.mp3");
//    audio.connecttoFS(SD, "test.wav");
//    audio.connecttohost("http://www.wdr.de/wdrlive/media/einslive.m3u");
//    audio.connecttohost("http://macslons-irish-pub-radio.com/media.asx");
//    audio.connecttohost("http://mp3.ffh.de/radioffh/hqlivestream.aac"); //  128k aac
      audio.connecttohost("http://mp3.ffh.de/radioffh/hqlivestream.mp3"); //  128k mp3
}

void loop()
{
    audio.loop();
    if(Serial.available()){ // put streamURL in serial monitor
        audio.stopSong();
        String r=Serial.readString(); r.trim();
        if(r.length()>5) audio.connecttohost(r.c_str());
        log_i("free heap=%i", ESP.getFreeHeap());
    }
}

// optional
void audio_info(const char *info){
    Serial.print("info        "); Serial.println(info);
}
void audio_id3data(const char *info){  //id3 metadata
    Serial.print("id3data     ");Serial.println(info);
}
void audio_eof_mp3(const char *info){  //end of file
    Serial.print("eof_mp3     ");Serial.println(info);
}
void audio_showstation(const char *info){
    Serial.print("station     ");Serial.println(info);
}
void audio_showstreamtitle(const char *info){
    Serial.print("streamtitle ");Serial.println(info);
}
void audio_bitrate(const char *info){
    Serial.print("bitrate     ");Serial.println(info);
}
void audio_commercial(const char *info){  //duration in sec
    Serial.print("commercial  ");Serial.println(info);
}
void audio_icyurl(const char *info){  //homepage
    Serial.print("icyurl      ");Serial.println(info);
}
void audio_lasthost(const char *info){  //stream URL played
    Serial.print("lasthost    ");Serial.println(info);
}