Interrupts and timers

Projects Programming
4

Thanks for the fast answer. Your explanation sounds understandable to me. The callback() function fires one more time and turns on the LED forever.

I tried your fix with the flag register but it didn`t change the situation at all. I also included your statement after Timer.stop() but nothing changed.

#include "TimerOne.h"

volatile bool isBlinking = false;

void setup()
{
  //***LED***
  pinMode(13, OUTPUT);

  //***Timer***
  Timer1.initialize(100000);
  Timer1.stop();
  Timer1.attachInterrupt(callback);

  //***Interrupt***
  pinMode(2, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(2), blink, FALLING);
}

void callback()
{
  digitalWrite(13, !digitalRead(13));
}

void blink()
{
  cli();
  if (isBlinking == false) {
    Timer1.start();
    TIFR1 = 0; //clear all Timer 1 Interrupt Flags
    isBlinking = true;
  }
  else { //true
    isBlinking = false;
    Timer1.stop();
    TIFR1 = 0; //clear all Timer 1 Interrupt Flags
    digitalWrite(13, LOW);
  }
  sei();
}

void loop()
{
}

To answer your first question: I use this lib