https://devzone.nordicsemi.com/f/nordic-q-a/66609/fast-advertising-timeout-seems-to-stop-rtc2This is my RTC init function. Whenever I start advertising in fast-advertising mode, and timeout for fast advertising expires, the RTC2 timer stops running and COUNTER resets to 0. I can&#39;t find anywhere that the advertising module uses RTC2 though. Ien-USTelligent Community 13Fri, 02 Oct 2020 11:42:05 GMThttps://devzone.nordicsemi.com/thread/272711?ContentTypeID=1Fri, 02 Oct 2020 11:42:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:90fd7ade-d4f9-4d52-aadd-874a593e5624Ivan Herrera<p>Correct, it has&nbsp;</p> <pre>sleep_mode_enter();</pre> <p>And thus go into POWER OFF mode. Thanks for pointing this out, sorry for the trouble!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/272705?ContentTypeID=1Fri, 02 Oct 2020 11:23:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:615b0b01-746d-4610-a0bf-c937b34c1d93Vidar Berg<p>Hello,</p> <p>RTC2 should normally not have been affected by the adv. timeout. The Softdevice and SDK modules use RTC0 and RTC1 respectively. Does your app do anything when advertising has timed out (ie on BLE_ADV_EVT_IDLE event). Like attempting to enter System OFF (Deep sleep)</p><div style="clear:both;"></div>