why should I clear event in the interrupt handlerhttps://devzone.nordicsemi.com/f/nordic-q-a/19172/why-should-i-clear-event-in-the-interrupt-handleras far as I am concerned, when I use PPI or SHORTS without interrupts, I DON&#39;T need to clear the corresponding event registers, and task will be triggered once the event is generated. But when I enable interrupt, I have to clear the event register, otherwiseen-USTelligent Community 13Mon, 23 Jan 2017 01:13:19 GMTRE: why should I clear event in the interrupt handlerhttps://devzone.nordicsemi.com/thread/74228?ContentTypeID=1Mon, 23 Jan 2017 01:13:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:21e457f8-14c4-4b16-827a-d5c5df977ff3summer<p>thank you, but I am still a little bit confused about how the event interrupt mechanism works.</p><div style="clear:both;"></div>RE: why should I clear event in the interrupt handlerhttps://devzone.nordicsemi.com/thread/74227?ContentTypeID=1Sun, 22 Jan 2017 21:05:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:21550579-047b-4d22-a5fb-9a4e39a7c67dRK<p>No with or without interrupts events aren&#39;t cleared automatically from the event register, you have to clear them if you want to reset it and are reading the register. PPI is triggered at a lower level from the actual event signal occurring, not from the level set in the register, so it doesn&#39;t matter in that case.</p><div style="clear:both;"></div>