exp5_music.ino

// Specifically for use with the Adafruit Feather, the pins are pre-set here!

// include SPI, MP3 and SD libraries
#include <SPI.h>
#include <SD.h>
#include <Adafruit_VS1053.h>

// These are the pins used
#define VS1053_RESET   -1     // VS1053 reset pin (not used!)

// Feather M0 or 32u4
#if defined(__AVR__) || defined(ARDUINO_SAMD_FEATHER_M0)
  #define VS1053_CS       6     // VS1053 chip select pin (output)
  #define VS1053_DCS     10     // VS1053 Data/command select pin (output)
  #define CARDCS          5     // Card chip select pin
  // DREQ should be an Int pin *if possible* (not possible on 32u4)
  #define VS1053_DREQ     9     // VS1053 Data request, ideally an Interrupt pin
#endif


int buttonPin = 13;
int buttonPrev = 1;
int buttonVal;

Adafruit_VS1053_FilePlayer musicPlayer = 
  Adafruit_VS1053_FilePlayer(VS1053_RESET, VS1053_CS, VS1053_DCS, VS1053_DREQ, CARDCS);

void setup() {
  Serial.begin(115200);

  pinMode(buttonPin, INPUT);
  Serial.println(buttonPin);
  // if you're using Bluefruit or LoRa/RFM Feather, disable the BLE interface
  //pinMode(8, INPUT_PULLUP);

  // Wait for serial port to be opened, remove this line for 'standalone' operation
  //while (!Serial) { delay(1); }

  
  if (! musicPlayer.begin()) { // initialise the music player
     Serial.println(F("Couldn't find VS1053, do you have the right pins defined?"));
     while (1);
  }

  Serial.println(F("VS1053 found"));
 
  //musicPlayer.sineTest(0x44, 500);    // Make a tone to indicate VS1053 is working
  
  if (!SD.begin(CARDCS)) {
    Serial.println(F("SD failed, or not present"));
    while (1);  // don't do anything more
  }
  Serial.println("SD OK!");
  
  // list files
  printDirectory(SD.open("/"), 0);
  
  // Set volume for left, right channels. lower numbers == louder volume!
  musicPlayer.setVolume(10,10);
  
#if defined(__AVR_ATmega32U4__) 
  // Timer interrupts are not suggested, better to use DREQ interrupt!
  // but we don't have them on the 32u4 feather...
  musicPlayer.useInterrupt(VS1053_FILEPLAYER_TIMER0_INT); // timer int
#elif defined(ESP32)
  // no IRQ! doesn't work yet :/
#else
  // If DREQ is on an interrupt pin we can do background
  // audio playing
  musicPlayer.useInterrupt(VS1053_FILEPLAYER_PIN_INT);  // DREQ int
#endif
  
}

void loop() {
buttonVal = digitalRead(buttonPin);

  
  // Play a file in the background, REQUIRES interrupts!
if((buttonVal==1)&&(buttonPrev==0)) {
Serial.println(F("Playing full track 001"));
  musicPlayer.playFullFile("track001.mp3");
}


Serial.println(buttonVal);



 // Serial.println(F("Playing track 002"));
 // musicPlayer.startPlayingFile("track002.mp3");
  
//  Serial.print(".");
//  // File is playing in the background
//  if (musicPlayer.stopped()) {
//    Serial.println("Done playing music");
//    while (1) {
//      delay(10);  // we're done! do nothing...
//    }
//  }
//  if (Serial.available()) {
//    char c = Serial.read();
//    
//    // if we get an 's' on the serial console, stop!
//    if (c == 's') {
//      musicPlayer.stopPlaying();
//    }
//    
//    // if we get an 'p' on the serial console, pause/unpause!
//    if (c == 'p') {
//      if (! musicPlayer.paused()) {
//        Serial.println("Paused");
//        musicPlayer.pausePlaying(true);
//      } else { 
//        Serial.println("Resumed");
//        musicPlayer.pausePlaying(false);
//      }
//    }
//  }


  delay(100);
buttonPrev = buttonVal; //store the value of this cycle to compare next loop

  
}



/// File listing helper
void printDirectory(File dir, int numTabs) {
   while(true) {
     
     File entry =  dir.openNextFile();
     if (! entry) {
       // no more files
       //Serial.println("**nomorefiles**");
       break;
     }
     for (uint8_t i=0; i<numTabs; i++) {
       Serial.print('\t');
     }
     Serial.print(entry.name());
     if (entry.isDirectory()) {
       Serial.println("/");
       printDirectory(entry, numTabs+1);
     } else {
       // files have sizes, directories do not
       Serial.print("\t\t");
       Serial.println(entry.size(), DEC);
     }
     entry.close();
   }
}