jmaculate.ino

// libraries
#include <SPI.h>
#include <SdFat.h>
#include <SdFatUtil.h>
#include <SFEMP3Shield.h>
// initialize MP3 card
SdFat sd;
SFEMP3Shield MP3player;

// constant variables
int inputPin            = 0;    // IR sensor input pin
unsigned long pauseTime = 5000; // how long the pause will be after music turned off
int readingInterval     = 10;   // interval to read the sensor
int SignalPin           = 5;
int SignalPin2          = 4;
#define SignalPin         5
#define SignalPin2        4

// setup
void setup() {
  Serial.begin(9600);
  sd.begin(SD_SEL, SPI_HALF_SPEED);
  MP3player.begin();
  MP3player.setVolume(10, 10);
  pinMode(inputPin, INPUT);
  pinMode(SignalPin, INPUT);
}

// loop
void loop(){
  int Signal;

  if (analogRead(inputPin) > 450) {
    play(2);
  }

  Signal = digitalRead(SignalPin);
  if (Signal == 1){
    Serial.print (Signal);
    Serial.println(“ no obstacle”);
  }
  else {
    play(1);
  }
  Signal = digitalRead(SignalPin2);

  if (Signal == 1){
    Serial.print (Signal);
    Serial.println(“ no obstacle”);
  }
  else {
    play(2);
  }

  delay(readingInterval); // wait with reading
}

void play(uint8_t track) {
  //MP3player.stopTrack();
  MP3player.playTrack(track);
  while(MP3player.isPlaying()) {
    //wait until done playing
  }
  delay(pauseTime);
}