const int InterruptPin = 2;
const int ButtonPin = 3;
const int BuzzerPin = 8;
const int InterruptLED = 10;
const int ButtonLED = 11;
volatile bool BuzzleState = false;

void setup() 
{
  Serial.begin(9600);
  pinMode(InterruptPin, INPUT);
  pinMode(ButtonPin, INPUT);
  pinMode(BuzzerPin, OUTPUT);
  pinMode(InterruptLED, OUTPUT);
  pinMode(ButtonLED, OUTPUT);
 
  Serial.println("System on Standby");
  attachInterrupt(digitalPinToInterrupt(InterruptPin), InterruptHappen, RISING);
}

void loop()
{
  delay(50);
  if (BuzzleState == true && digitalRead(InterruptPin) == LOW)
  {
    tone(BuzzerPin, 1000);
    Serial.println("Enter Interupt, Piezo Buzzer On");
    digitalWrite(InterruptLED, HIGH);
    digitalWrite(ButtonLED, LOW);
    delay(1000);
  }

	else 
	{
		if(digitalRead(ButtonPin) == LOW)
		{
      if (BuzzleState == false)
      {
        BuzzleState = true;
        tone(BuzzerPin, 2000);
        Serial.println("From Idle State, Piezo Button On");
        digitalWrite(InterruptLED, LOW);
        digitalWrite(ButtonLED, HIGH);
        delay(1000);
      }


      else if (BuzzleState == true)
      {
        BuzzleState = false;
        noTone(BuzzerPin);
        Serial.println("Piezo Buzzer OFF, System on Standby");
        digitalWrite(InterruptLED, LOW);
        digitalWrite(ButtonLED, LOW);
        delay(1000);
      }
    }
	}

}
	
	
	
void InterruptHappen() 
{
  BuzzleState = true;
}