const uint16_t arrOn[] = {
  2, 2, 2, 2, 2, 2, 4, 2, 4, 2, 2, 3, 2, 2, 3, 2, 2, 2, 2, 2, 4, 2, 2, 2, 2, 3, 2, 3, 4, 2, 
};
const int nOnLen = sizeof(arrOn)/sizeof(uint16_t);
const uint16_t arrOff[] = {
  2, 2, 2, 2, 2, 2, 4, 2, 4, 2, 2, 3, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 4, 3, 3, 4, 2, 
};
const int nOffLen = sizeof(arrOff)/sizeof(uint16_t);
const int nTxPin = 7; // Arduino digital pin you're using for radio data.
const int pulseScale = 260; // usec per sample unit


void transmitArray(const uint16_t pulses[], int pulseCount) {
  for (int repeat=0; repeat < 3; ++repeat) {
    for(int pulse = 0; pulse < pulseCount; ++pulse) {
      int pulseWidth = pulses[pulse];

      digitalWrite(nTxPin, HIGH);
      // Widths are in units of 500us, for the full-period square wave
      delayMicroseconds(pulseScale*pulseWidth);

      digitalWrite(nTxPin, LOW);
      delayMicroseconds(pulseScale*pulseWidth);
    }
  }
}

void sendTrain(const uint16_t pulses[], int pulseCount) {
  transmitArray(pulses,pulseCount);
  delay(1000);
  transmitArray(pulses,pulseCount);
  delay(2000);
  transmitArray(pulses,pulseCount);
}


/**
 * 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(arrOn, nOnLen);
    }

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

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