attachInterrupt problem

[Omar-alSuntawi]

This code does not work correctly !

const byte ledPin = 13;
const byte interruptPin = 2;
volatile byte state = LOW;

void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(interruptPin, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(interruptPin), blink, CHANGE);
}

void loop() {
  digitalWrite(ledPin, state);
}

void blink() {
  state = !state;
}

which is on the Arduino Reference https://www.arduino.cc/reference/en/language/functions/external-interrupts/attachinterrupt/

It seems to accidentally read random values.

[per1234]

Moved to arduino/reference-en#575