ArduinoLedLightWithSerialFirebase.c

void setup()

{
  pinMode(13, OUTPUT);
  Serial.begin(9600);
  while (!Serial);
  Serial.println("Input 1 to Turn LED on and 2 to off");
}

void loop() {
  if (Serial.available())
  {
    int state = Serial.parseInt();
    if (state == 1)
    {
      digitalWrite(13, HIGH);
      Serial.println("Command completed LED turned ON");
    }

    if (state == 2)
    {
      digitalWrite(13, LOW);
      Serial.println("Command completed LED turned OFF");

    }

  }

}