// 1) Jika tombol hijau ditekan dan ditahan (tetap ditekan) lampu hijau ikut menyala, bila tombol hijau dilepas lampu hijau mati	
// 2) Jika tombol biru ditekan 1x (tidak ditahan), lampu biru menyala. Jika ditekan 1x lagi lampu biru mati

const int buttonHijau = 12;
const int ledHijau = 2;

const int buttonBiru = 11;
const int ledBiru = 3;
bool ledStateBiru = false;
bool lastButtonState = HIGH;

void setup() {
  pinMode(buttonHijau, INPUT);
  pinMode(ledHijau, OUTPUT);

  pinMode(buttonBiru, INPUT);
  pinMode(ledBiru, OUTPUT);
  digitalWrite(ledBiru, LOW);
}

void loop() {
  int buttonStateHijau = digitalRead(buttonHijau);
  int buttonStateBiru = digitalRead(buttonBiru);

  if (buttonStateHijau == HIGH) {
    digitalWrite(ledHijau, HIGH);
  } else {
    digitalWrite(ledHijau, LOW);
  }

  if (buttonStateBiru == HIGH && lastButtonState == LOW) {
    delay(50); // Debounce
    if (digitalRead(buttonBiru) == HIGH) {
      ledStateBiru = !ledStateBiru;
      digitalWrite(ledBiru, ledStateBiru ? HIGH : LOW);
    }
  }
  lastButtonState = buttonStateBiru;
}