Thread.inot

/* This fails to compile because myEventHandler has the
 * function signature of 'void Thread::myEventHandler(void)'
 * and is a member function of 'class Thread' while
 * attachInterrupt expects a function with the signature
 * 'void myEventHandler(void)'
 */

void myEventHandler()
{
  /* Do something. */
}

void setup()
{
  attachInterrupt(digitalPinToInterrupt(2), myEventHandler, CHANGE);
}

void loop()
{

}