Description

This function turns off a given interrupt that was attached previously.

Syntax

This function has the following variants:

• detachInterrupt(digitalPinToInterrupt(pin)) (recommended)
• detachInterrupt(interrupt) (not recommended)
• detachInterrupt(pin) (Not recommended. Additionally, this only works on a specific set of boards.)

Parameters

The function admits the following parameters:

• interrupt: the number of the interrupt to disable (see attachInterrupt() for more details)
• pin: the Arduino pin number of the interrupt to disable

Returns

The function returns nothing.

Example Code

void setup() {
  // Attach an interrupt on digital pin 2 (assuming you're using it with a button or sensor)
  //  attachInterrupt(digitalPinToInterrupt(2), myInterruptRoutine, RISING);

  // ... other setup code ...

  // Later, you can detach the interrupt when you no longer need it
  detachInterrupt(digitalPinToInterrupt(2)); // or detachInterrupt(2);
}

void loop() {
  // ... your main loop code ...
}

void myInterruptRoutine() {
  // This function will be executed when the interrupt on pin 2 is triggered
  // and it's still attached.  After detachInterrupt(), this routine won't be called.
}

See also

• attachInterrupt()
• digitalPinToInterrupt()