#define BUZZER_PIN PA5       // Buzzer pin
#define BUTTON_PIN PB0       // Push button pin

void setup() {
  pinMode(BUZZER_PIN, OUTPUT);         // Set Buzzer pin as output
  pinMode(BUTTON_PIN, INPUT_PULLUP);   // Set button pin as input with pull-up resistor
}

void loop() {
  if (digitalRead(BUTTON_PIN) == LOW) { // Check if button is pressed
    tone(BUZZER_PIN, 1000);              // Play sound at 1000 Hz
    delay(100);                          // Sound duration
    noTone(BUZZER_PIN);                  // Stop sound
  }
}