const int bp2 = 2; // Pin connected to the button
int buttonState2 = 0; // Current button state
int lastButtonState2 = HIGH; // Previous button state

void setup() {
  pinMode(bp2, INPUT_PULLUP); // Set button pin as input with pull-up resistor
  pinMode(5, OUTPUT); // Set LED pin as output
  digitalWrite(5, HIGH); // Initialize the LED as off
  Serial.begin(9600); // Initialize serial communication
}

void loop() {
  buttonState2 = digitalRead(bp2); // Read the button state

  // Check for a transition from HIGH to LOW (button press)
  if ( buttonState2 == LOW) {
    // Toggle the LED
    digitalWrite(5, LOW); // Turn LED on
  }
  else{
  digitalWrite(5,HIGH);   
  }
  delay(100);
  // Save the current button state as the last state for the next loop
  lastButtonState2 = buttonState2;
}