const int buttonPin = PA0; // Connect a button between PA0 and GND
const int ledPin = PA5;    // On-board LED

void setup() {
  pinMode(buttonPin, INPUT_PULLUP); // Use the MCU's internal pull-up resistor
  pinMode(ledPin, OUTPUT);
  Serial.begin(115200);
  Serial.println("Button Debugger Started!");
}

void loop() {
  int buttonState = digitalRead(buttonPin);

  // Print only when the state changes
  if (buttonState == LOW) { // Button is pressed (pulled to GND)
    digitalWrite(ledPin, HIGH);
    Serial.println("EVENT: Button PRESSED");
  } else {
    digitalWrite(ledPin, LOW);
    Serial.println("EVENT: Button RELEASED");
  }
  delay(100); // Small delay to debounce and avoid spamming the serial monitor
}