https://devzone.nordicsemi.com/f/nordic-q-a/2098/how-to-use-the-common-app-libraries-----gpiote-handlerHI, I want use some GPIO to detect &quot;pin_high_to_low&quot; or &quot; pin_low_to_high&quot;. and I think the &quot;app_gpiote.c&quot; might be helpful. but I have been confused by function &quot; sense_level_toggle(*p_user, pins) &quot; , What&#39;s the purpose of toggling sense level foren-USTelligent Community 13Mon, 14 Apr 2014 09:48:42 GMThttps://devzone.nordicsemi.com/thread/8966?ContentTypeID=1Mon, 14 Apr 2014 09:48:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e96e9361-ddea-48ff-b4d2-820fa62f4f25Peeter Vois<p>The input pin interrupt will be generated on specific change, from 0-1 or from 1-0 but not 0-1 and 1-0. The toggle mechanism is used to get both interrupts on the same pin. If the current state of pin is 0 then interrupt on 0-1 transition is configured. If the current state is 1 then interrupt on 1-0 is configured.</p> <p>Yes you get 2 calls this way, one call when you press the button and another call when you release the button.</p><div style="clear:both;"></div>