https://devzone.nordicsemi.com/f/nordic-q-a/59853/do-interrupts-set-the-event-registerIn the nRF52840 do the peripheral interrupts (e.g. UART ENDRX) set the event register in the ARM core? If so is __SEV(); __WFE(); the only way to clear this event?en-USTelligent Community 13Mon, 06 Apr 2020 06:25:42 GMThttps://devzone.nordicsemi.com/thread/243537?ContentTypeID=1Mon, 06 Apr 2020 06:25:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6784bf33-b3fb-4f2f-9453-957ddb0527aaVidar Berg<p>Hi,</p> <p>The internal event register is set when you return from an interrupt service routine, so it will be set after you return from the UARTE irq handler. And you must call __WFE() to clear it.&nbsp;</p><div style="clear:both;"></div>