const uint8_t prologue[] = {
  2, 2, 2, 2, 2, 2, 4,
  2, 4, 2, 2, 3, 2, 2,
  3, 2, 2, 2, 2, 2,
};
const uint8_t prologueSize = sizeof(prologue) / sizeof(uint8_t);
const uint8_t epilogue[] = {
  3, 4, 3,
};
const uint8_t epilogueSize = sizeof(epilogue) / sizeof(uint8_t);

const uint8_t onSignal[] = {
  4, 2, 2, 2, 2, 3, 2,
};
const uint8_t onSize = sizeof(onSignal) / sizeof(uint8_t);

const uint8_t offSignal[] = {
  2, 2, 2, 2, 2, 4, 3,
};
const uint8_t offSize = sizeof(offSignal) / sizeof(uint8_t);

const int pulseScale = 260; // usec per sample unit

const int nTxPin = 7; // Arduino digital pin you're using for radio data.

void transmitArray(const uint8_t pulses[], uint8_t pulseCount) {
  for(int pulse = 0; pulse < pulseCount; ++pulse) {
    int pulseWidth = pulses[pulse];

    if (pulseWidth>0) {
      digitalWrite(nTxPin, HIGH);
      delayMicroseconds(pulseScale*pulseWidth);
    }
    else {
      digitalWrite(nTxPin, LOW);
      delayMicroseconds(pulseScale*(-pulseWidth));
    }
  }
}

void transmitSignal(const uint8_t signal[], uint8_t signalSize) {
  transmitArray(prologue,prologueSize);
  transmitArray(signal,signalSize);
  transmitArray(epilogue,epilogueSize);
}

void sendTrain(const uint8_t signal[], uint8_t signalSize) {
  transmitSignal(signal,signalSize);
  delay(1000);
  transmitSignal(signal,signalSize);
  delay(2000);
  transmitSignal(signal,signalSize);
}


/**
 * The setup() function is called when a sketch starts. Used  to initialize
 * variables, pin modes, start using libraries, etc. The setup function will
 * only run once, after each powerup or reset of the Arduino board.
 */
void setup()
{
  pinMode(nTxPin, OUTPUT);
  digitalWrite(nTxPin, LOW);
  
  Serial.begin(9600);
  Serial.println("Press 0 to turn off heating");
  Serial.println("Press 1 to turn on heating");

}


/**
 * The loop() function loops consecutively, allowing the program to change and
 * respond. Used to actively control the Arduino board.
 */
void loop()
{
  if (Serial.available() > 0)
  {
    int nIncomming = Serial.read();
    if (nIncomming == 49) { // char code for 1
      Serial.println("ON");
      sendTrain(onSignal,onSize);
    }

    if (nIncomming == 48) { // char code for 0
      Serial.println("OFF");
      sendTrain(offSignal,offSize);
    }

    Serial.println("Press 0 to turn off heating");
    Serial.println("Press 1 to turn on heating");
 }
}