Using debounce with interrupt

Projects Programming
8

it is relatively easy to notice a button push using an interrupt and ignoring any bounciness...

not tested, not compiled

volatile bool buttonPushed = false;

void setup() 
{
  attachInterrupt(1, PushButton, RISING); // May need to change
}

void loop() 
{
  if(buttonPushed)
  {
    buttonPushed = false;
    // do something
  }
}

void PushButton() //interrupt with debounce
{
  volatile static unsigned long last_interrupt_time = 0;
  unsigned long interrupt_time = millis();
  if (interrupt_time - last_interrupt_time > 50UL)  // ignores interupts for 50milliseconds
  {
    buttonPushed = true;
  }
  last_interrupt_time = interrupt_time;
}

I use it for example when working with blocking code (radio TX, and RX). And need to notice an event happened.