#define BUTTON1_PIN 12
#define BUTTON2_PIN 13
#define BUZZER_PIN 1

bool button1State = false;
bool button2State = false;
bool lastButton1 = false;
bool lastButton2 = false;

void setup() {
  pinMode(BUTTON1_PIN, INPUT);
  pinMode(BUTTON2_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
}

void loop() {
  bool currentButton1 = digitalRead(BUTTON1_PIN);
  bool currentButton2 = digitalRead(BUTTON2_PIN);

  // Detect button1 press (rising edge)
  if (currentButton1 && !lastButton1) {
    button1State = !button1State;
    button2State = false;
  }

  // Detect button2 press (rising edge)
  if (currentButton2 && !lastButton2) {
    button2State = !button2State;
    button1State = false;
  }

  // Play tone based on state
  if (button1State) {
    tone(BUZZER_PIN, 440);  // 440 Hz tone
  } else if (button2State) {
    tone(BUZZER_PIN, 880);  // 880 Hz tone
  } else {
    noTone(BUZZER_PIN);     // Stop tone
  }

  // Update last button states
  lastButton1 = currentButton1;
  lastButton2 = currentButton2;

  delay(50); // debounce delay
}