 #define DHTTYPE DHT22
 #define PIN_LED 24 //Serial Data LED
 #define SERIALWAIT 200
+#define interruptPin 19
 
 // Assign human-readable names to some common 16-bit color values:
 #define BLACK   0x0000

#define MAGENTA 0xF81F
#define YELLOW  0xFFE0
#define WHITE   0xFFFF

//cycle will be increased in the loop(), if cycle == CYCLE_UPDATE_TFT --> update TFT and reset cycle to 0
//this will avoid updating the TFT each time when a serial data is sent (no need to update the TFT that often)

  
  pinMode(PIN_LED, OUTPUT);
  digitalWrite(PIN_LED, LOW);
  attachInterrupt(digitalPinToInterrupt(interruptPin), interruptCall, RISING); 
  
  pinMode(LEDblau, OUTPUT);
  pinMode(LEDgruen, OUTPUT);
  pinMode(LEDrot, OUTPUT);
}

void showError(void)
