const int buttonPin1 = 2; // Green button pin
const int buttonPin2 = 3; // Red button pin
const int greenLEDPin = 12; // Green LED pin
const int redLEDPin = 13;   // Red LED pin

volatile bool greenLEDState = true; // State of the green LED
volatile bool redLEDState = true;   // State of the red LED

void setup() 
{
   Serial.begin(9600);
   pinMode(buttonPin1, INPUT_PULLUP); // Set green button as input with pull-up resistor
   pinMode(buttonPin2, INPUT_PULLUP); // Set red button as input with pull-up resistor
   pinMode(greenLEDPin, OUTPUT); // Set green LED pin as output
   pinMode(redLEDPin, OUTPUT);   // Set red LED pin as output
   digitalWrite(greenLEDPin, HIGH); // To constantly keep green LED on
   digitalWrite(redLEDPin, HIGH);   // To constantly keep red LED on
   Serial.println("Press any button to see effect");

   // Attach interrupts for both buttons
   attachInterrupt(digitalPinToInterrupt(buttonPin1), handleGreenButton, CHANGE); // Trigger on any change
   attachInterrupt(digitalPinToInterrupt(buttonPin2), handleRedButton, CHANGE);   // Trigger on any change
}

void loop() 
{

}

void handleGreenButton() 
{
   if (digitalRead(buttonPin1) == LOW) { // Falling edge detected (button pressed)
      Serial.println("Green Button Pressed!");
      digitalWrite(greenLEDPin, LOW); // Turn off the green LED
      greenLEDState = false; // To update the state
   } else { // Rising edge detected (button released)
      Serial.println("Green Button Released!");
      digitalWrite(greenLEDPin, HIGH); // Turn on the green LED
      greenLEDState = true; // To update the state
   }
}

void handleRedButton() 
{
   if (digitalRead(buttonPin2) == LOW) { // Falling edge detected (button pressed)
      Serial.println("Red Button Pressed!");
      digitalWrite(redLEDPin, LOW); // Turn off the red LED
      redLEDState = false; // To update the state
   } else { // Rising edge detected (button released)
      Serial.println("Red Button Released!");
      digitalWrite(redLEDPin, HIGH); // Turn on the red LED
      redLEDState = true; // To update the state
   }
}