Arduino buton kesmesi

Buyrun anlamadığınız yeri sorabilirsiniz. Ben test ettim çalışıyor.İsterseniz devre şemasını atabilirim.

const int ledPin = 13;
const int buttonPin = 2;
 
int buttonState = LOW;
int ledState = 0;

long lastDebounceTime = 0;
long debounceDelay = 100;

int firsttime = 1;
unsigned long startTime;
unsigned long pressTime;

void setup() {
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);
  pinMode(buttonPin, INPUT);
  attachInterrupt(0,DebounceInterrupt,RISING);
}

void loop() {
  switch(ledState)
  {
    case 0:
    digitalWrite(ledPin, LOW);
    break;
    case 1:
    digitalWrite(ledPin, HIGH);
    delay(1000);
    digitalWrite(ledPin, LOW);
    delay(1000);
    digitalWrite(ledPin, HIGH);
    delay(1000);
    digitalWrite(ledPin, LOW);
    delay(1000);
    digitalWrite(ledPin, HIGH);
    delay(2000);
    digitalWrite(ledPin, LOW);
    delay(2000);
    digitalWrite(ledPin, HIGH);
    delay(2000);
    digitalWrite(ledPin, LOW);
    delay(2000);
    break;
    case 2:
    digitalWrite(ledPin, HIGH);
    delay(1000);
    digitalWrite(ledPin, LOW);
    delay(1000);
    digitalWrite(ledPin, HIGH);
    delay(1000);
    digitalWrite(ledPin, LOW);
    delay(1000);
    digitalWrite(ledPin, HIGH);
    delay(1000);
    digitalWrite(ledPin, LOW);
    delay(1000);
    digitalWrite(ledPin, HIGH);
    delay(1000);
    digitalWrite(ledPin, LOW);
    delay(1000);
    digitalWrite(ledPin, HIGH);
    delay(2000);
    digitalWrite(ledPin, LOW);
    delay(2000);
    digitalWrite(ledPin, HIGH);
    delay(2000);
    digitalWrite(ledPin, LOW);
    delay(2000);
    digitalWrite(ledPin, HIGH);
    delay(2000);
    digitalWrite(ledPin, LOW);
    delay(2000);
    digitalWrite(ledPin, HIGH);
    delay(2000);
    digitalWrite(ledPin, LOW);
    delay(2000);
    break;
    default:
    break;
  }
}

void DebounceInterrupt() {
  if((millis() - lastDebounceTime) > debounceDelay) 
  {
    Pressed();
    lastDebounceTime = millis();
  }
}

void Pressed(){
  buttonState = digitalRead(buttonPin);
  if(digitalRead(buttonPin) == HIGH){
    if(firsttime == 1){
      startTime = millis();
      firsttime=0;
    }
    else if(firsttime == 0)
    {
     firsttime = 1;
    }
    pressTime = millis()- startTime;
    if(pressTime>=2000){
      ledState=2;    
    }
    else if(pressTime<2000){
      ledState=1;    
    }
  }
}