#define intPin 2
int stevec;
volatile bool m;
unsigned long timePass;
int timeDelay = 500;

void setup() {
  pinMode(intPin, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(intPin), ISR_prekinitev, CHANGE);
  Serial.begin(115200);
}

void loop() {
  if (m == HIGH && ((millis() - timePass) > timeDelay)){
    m = LOW;
    stevec++;
    timePass = millis();
    Serial.println(stevec);
  }
}

void ISR_prekinitev(){
  m = HIGH;
}