Attiny interupt handle

direct_interupt_settings.ino

#include "avr/interrupt.h"
 
bool value;

#define STATUS_PIN PB4 //Led marker for show the user what happened
 
void setup() {
  pinMode(STATUS_PIN, OUTPUT);
  digitalWrite(STATUS_PIN, HIGH);
  GIMSK = 0b00100000;    // turns on pin change interrupts
  PCMSK = 0b00000100;    // turn on interrupts on pins PB2
  sei();                 // enables interrupts
}
 
void loop() {
}
 
ISR(PCINT0_vect) {
  value = !value;
  digitalWrite(STATUS_PIN, value);
}

pcint_handle_methode.ino

#include <PinChangeInterruptHandler.h>

#define STATUS_PIN PB4 //Led marker for show the user what happened 

// Inherit from PinChangeInterruptHandler
class MyLib : PinChangeInterruptHandler {
  byte inputPin;
  bool led;

public:
  MyLib(byte pin) : inputPin(pin) {}
  
  void begin() {
    pinMode(inputPin, INPUT);
    attachPCInterrupt(digitalPinToPCINT(inputPin));
    pinMode(STATUS_PIN, OUTPUT);
    digitalWrite(STATUS_PIN, HIGH);
  }

  void stop() {
    detachPCInterrupt(digitalPinToPCINT(inputPin));
    digitalWrite(STATUS_PIN, LOW);
  }

  // Overwrite handlePCInterrupt() method
  virtual void handlePCInterrupt(int8_t interruptNum, bool value) {
    led = !led;
    digitalWrite(STATUS_PIN, led);
  }
};

MyLib mylib(PB2);

void setup() {
  mylib.begin();
}

void loop() {
}