// RTI_RGB = 0x40, RTI_PAL = 0x45, RTI_NTSC = 0x4C, RTI_OFF = 0x46
// brightness levels 0x20, 0x61, 0x62, 0x23, 0x64, 0x25, 0x26, 0x67, 0x68, 0x29, 0x2A, 0x2C, 0x6B, 0x6D, 0x6E, 0x2F

#define R_PIN 3
#define AUTO_CLOSE_PIN 5
#define SERIAL_SWITCH_PIN 4

bool zpatecka_on = false;

int x=0;

void setup()
{
  Serial.begin(2400);

  //nastavi pin na 1
  pinMode(R_PIN, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(R_PIN), preruseni, CHANGE);
}

void loop()
{

  if (zpatecka_on == true){
     zpateckaOn();
     if (digitalRead(AUTO_CLOSE_PIN) == LOW){
     x==1;
     }
  }
  else
  {
     zpateckaOff();
  }

}

void preruseni()
{
  //if (zpatecka_on == false){

   if (digitalRead(R_PIN) == HIGH)
   {
      zpatecka_on = true;
   }
   else
   {
      zpatecka_on=false;

   }
}

void zpateckaOn()
{
  rtiWrite(0x4C);
  rtiWrite(0x6B);
  rtiWrite(0x83);
  digitalWrite(SERIAL_SWITCH_PIN, HIGH);

}

void zpateckaOff()
{
 // Kod po vyrazeni zpatecky
 if (digitalRead(AUTO_CLOSE_PIN) == HIGH)
  {
    rtiWrite(0x46);
    rtiWrite(0x6B);
    rtiWrite(0x83);
    digitalWrite(SERIAL_SWITCH_PIN, LOW);
  }
  else if (digitalRead(AUTO_CLOSE_PIN) == LOW and x==1)
  {
    rtiWrite(0x40);
    rtiWrite(0x6B);
    rtiWrite(0x83);
    digitalWrite(SERIAL_SWITCH_PIN, LOW);
    x==0;
  }
}

void rtiWrite(char byte) {
  Serial.print(byte);
  delay(100);
}