on-pin-event.md

on Pin Event

Run some code when something happens at a pin.

sensing.onPinEvent(DigitalPin.D0, PinEvent.Pressed, function () {
	
})

Parameters

• name: the name of the pin to watch for an event at.
• ev: the pin event to run some code for. The pin events are:

• pressed: the pin was pressed (touched).
• released: the pin was released (finger lifted off).
• changed: the condition at the pin has changed.
• HIGH: a high voltage input signal is detected on the pin.
• LOW: a low voltage input signal is detected on the pin.

• body: the code you want to run when something happens at the pin.

Example

Flash each of the LEDs to the right when pin D0 is pressed. Then, flash the LEDs back to the left when pin D0 is released.

sensing.onPinEvent(DigitalPin.D0, PinEvent.Pressed, function () {
    for (let i = 0; i <= 5; i++) {
        lights.set(i, 1)
        loops.pause(30)
        lights.set(i, 0)
    }
})
sensing.onPinEvent(DigitalPin.D0, PinEvent.Released, function () {
    for (let i = 0; i <= 5; i++) {
        lights.set(5 - i, 1)
        loops.pause(30)
        lights.set(5 - i, 0)
    }
})

See also

pressed