int b00[] = { 60, 60, 60, 60, 60,160,160,160,160,160};
int b01[] = {160, 60, 60, 60, 60, 60,160,160,160,160};
int b02[] = { 60,160, 60, 60, 60,160, 60,160,160,160};
int b03[] = { 60, 60,160, 60, 60,160,160, 60,160,160};
int b04[] = {160, 60,160, 60, 60, 60,160, 60,160,160};
int b05[] = { 60,160,160, 60, 60,160, 60, 60,160,160};
int b06[] = { 60, 60, 60,160, 60,160,160,160, 60,160};
int b07[] = {160, 60, 60,160, 60, 60,160,160, 60,160};
int b08[] = { 60,160, 60,160, 60,160, 60,160, 60,160};
int b09[] = { 60, 60,160,160, 60,160,160, 60, 60,160};
int b10[] = {160, 60,160,160, 60, 60,160, 60, 60,160};
int b11[] = { 60,160,160,160, 60,160, 60, 60, 60,160};
int b12[] = { 60, 60, 60, 60,160,160,160,160,160, 60};
int b13[] = {160, 60, 60, 60,160, 60,160,160,160, 60};
int b14[] = { 60,160, 60, 60,160,160, 60,160,160, 60};
int b15[] = { 60, 60,160, 60,160,160,160, 60,160, 60};
int b16[] = {160, 60,160, 60,160, 60,160, 60,160, 60};
int b17[] = { 60,160,160, 60,160,160, 60, 60,160, 60};
int b18[] = { 60, 60, 60,160,160,160,160,160, 60, 60};
int b19[] = {160, 60, 60,160,160, 60,160,160, 60, 60};
int b20[] = { 60,160, 60,160,160,160, 60,160, 60, 60};
#define IRpin_PIN      PIND
#define IRpin          2
#define MAXPULSE 35000
#define RESOLUTION 20 
#define FUZZINESS 20
uint16_t pulses[100][2];  // pair is high and low pulse 
uint8_t currentpulse = 0; // index for pulses we're storing

void setup(void) {
  Serial.begin(115200);
  Serial.println("Ready to decode IR!");
}
int listenForIR(void) {
  currentpulse = 0;
  while (1) {
    uint16_t highpulse, lowpulse;  // temporary storage timing
    highpulse = lowpulse = 0; // start out with no pulse length
    while (IRpin_PIN & (1 << IRpin)) {
       highpulse++;
       delayMicroseconds(RESOLUTION);
       if ((highpulse >= MAXPULSE) && (currentpulse != 0)) {
         return currentpulse;
       }
    }
    pulses[currentpulse][0] = highpulse;
    while (! (IRpin_PIN & _BV(IRpin))) {
       lowpulse++;
       delayMicroseconds(RESOLUTION);
       if ((lowpulse >= MAXPULSE)  && (currentpulse != 0)) {
         return currentpulse;
       }
    }
    pulses[currentpulse][1] = lowpulse;
    currentpulse++;
  }
}
void loop(void) {
  int numberpulses = listenForIR();
       if (IRcompare(numberpulses, b00)) { Serial.println("VOL-"); }
  else if (IRcompare(numberpulses, b01)) { Serial.println("PLAY/PAUSE"); }
  else if (IRcompare(numberpulses, b02)) { Serial.println("VOL+"); }
  else if (IRcompare(numberpulses, b03)) { Serial.println("SETUP"); }
  else if (IRcompare(numberpulses, b04)) { Serial.println("UP (PREV)"); }
  else if (IRcompare(numberpulses, b05)) { Serial.println("STOP/MODE"); }
  else if (IRcompare(numberpulses, b06)) { Serial.println("LEFT (CH-)"); }
  else if (IRcompare(numberpulses, b07)) { Serial.println("ENTER/SAVE"); }
  else if (IRcompare(numberpulses, b08)) { Serial.println("RIGHT (CH+)"); }
  else if (IRcompare(numberpulses, b09)) { Serial.println("0 10+"); }
  else if (IRcompare(numberpulses, b10)) { Serial.println("DOWN (NEXT)"); }
  else if (IRcompare(numberpulses, b11)) { Serial.println("CONTINUE"); }
  else if (IRcompare(numberpulses, b12)) { Serial.println("1"); }
  else if (IRcompare(numberpulses, b13)) { Serial.println("2"); }
  else if (IRcompare(numberpulses, b14)) { Serial.println("3"); }
  else if (IRcompare(numberpulses, b15)) { Serial.println("4"); }
  else if (IRcompare(numberpulses, b16)) { Serial.println("5"); }
  else if (IRcompare(numberpulses, b17)) { Serial.println("6"); }
  else if (IRcompare(numberpulses, b18)) { Serial.println("7"); }
  else if (IRcompare(numberpulses, b19)) { Serial.println("8"); }
  else if (IRcompare(numberpulses, b20)) { Serial.println("9"); }
}
boolean IRcompare(int numpulses, int Signal[]) {
  int com[] = {880,430,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,60,160,60,160,60,160,60,160,60,160,60,160,60,60,60,160,60,999,60,999,60,999,60,999,60,999,60,60,60,60,60,60,60,160,60,999,60,999,60,999,60,999,60,160,60,160,60,160,60,4000,880,220,60, 0};
  for (int i=0; i< numpulses-1; i++) {
    int oncode = pulses[i][1] * RESOLUTION / 10;
    int offcode = pulses[i+1][0] * RESOLUTION / 10;
    if ( abs(oncode - com[i*2 + 0]) > (com[i*2 + 0] * FUZZINESS / 100)) {
     return false;
    }
    int iO = i*2 + 1;
    if((iO==35)||(iO==37)||(iO==39)||(iO==41)||(iO==43)||(iO==51)||(iO==53)||(iO==55)||(iO==57)||(iO==59)){
      switch(iO){
        case 35: iO = 0; break;
        case 37: iO = 1; break;
        case 39: iO = 2; break;
        case 41: iO = 3; break;
        case 43: iO = 4; break;
        case 51: iO = 5; break;
        case 53: iO = 6; break;
        case 55: iO = 7; break;
        case 57: iO = 8; break;
        case 59: iO = 9; break;
      }
      if ( abs(offcode - Signal[iO]) > (Signal[iO] * FUZZINESS / 100)) {
        return false;
      }
    } else {
      if (abs(offcode - com[i*2 + 1]) > (com[i*2 + 1] * FUZZINESS / 100)) {
        return false;
      }
    } 
  }
  return true;
}