Button release event?

[JohnBrown]

Am I right in thinking that the button handler only causes an event for a button press(although I realize it is possible to configure the button such that a release is interpreted as a press), rather than a change of state? I expect I can work around this, but would it be possible to re-configure the button in the event handler, such that events would be generated on both press and release?

[Håkon Alseth]

Hi John,

From SDK v6.0 and newer, app_button will give you an event on both button press and release. Here's an example snippet:

static void button_event_handler(uint8_t pin_no, uint8_t button_action)
{
    if (button_action == APP_BUTTON_PUSH)
    {
        switch (pin_no)
        {
			case MY_BUTTON:
				do_something_on_press();
				break;		
            default:
                APP_ERROR_HANDLER(pin_no);
                break;
        }
    }
    else if (button_action == APP_BUTTON_RELEASE)
    {
        switch (pin_no)
        {
			case MY_BUTTON:
				do_something_on_release();
				break;
            default:
                APP_ERROR_HANDLER(pin_no);
                break;
        }
    }
}

Cheers, Håkon

[JohnBrown]

That's great news, Håkon, and many thanks for the prompt answer.