void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(15, INPUT);
  pinMode(25, OUTPUT); //LED HIJAU
  pinMode(32, OUTPUT); //LED MERAH
  pinMode(33, OUTPUT); //LED KUNING
  Serial.println("Hello, ESP32!");
}

void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(15) == HIGH) {
    digitalWrite(33, HIGH); //Nyala kuning 3 detik
    delay(3000);
    digitalWrite(33, LOW); //Nyala kuning 
    digitalWrite(32, HIGH); //Nyala merah 5 detik
    delay(5000);
    // digitalWrite(32, LOW);
    digitalWrite(33, HIGH); //Nyala kuning 2 detik
    delay (2000);
    digitalWrite(33, LOW); //Nyala kuning
    digitalWrite(32, LOW); //Nyala merah
    digitalWrite(25, HIGH); //Nyala hijau 3 detik
    delay(3000);
    digitalWrite(25,LOW); //Mati hijau
    
      }
  else {
    digitalWrite(32, LOW);
    digitalWrite(33, LOW);
    digitalWrite(15, LOW);
  }
  delay(10); // this speeds up the simulation
}