https://devzone.nordicsemi.com/f/nordic-q-a/23930/can-not-put-sleep-mode-in-nrf51822hi i am using nrf51822 s110 and 7.2.0 SDK. here, i am trying to put cpu in sleep mode, but i can not. i found the issue RTC1 interrupt call every 5ms. i have configured RTC1 as 5ms. my question is, if it possible system put in off mode without stopen-USTelligent Community 13Tue, 01 Aug 2017 11:29:18 GMThttps://devzone.nordicsemi.com/thread/94221?ContentTypeID=1Tue, 01 Aug 2017 11:29:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:055ac184-ccc6-4152-8bbf-bfe5cad8d52dMartinBL<p>Can you please also answer the other two questions?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/94219?ContentTypeID=1Tue, 01 Aug 2017 06:56:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fff47fdc-4210-409b-93f2-4405ec96ad21Satheeshkumar<p>hi martin, these are, i have used into sleep function</p> <p>__WFE(); __SEV(); __WFE();</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/94220?ContentTypeID=1Mon, 31 Jul 2017 13:36:51 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b73bacb8-d574-4e8a-9a62-cc6e782276e6MartinBL<ol> <li>What is going on inside your sleep() function?</li> <li>Have you debugged and checked that you actually enter the sleep() function?</li> <li>How do you know that the chip doesn&#39;t sleep?</li> </ol><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/94223?ContentTypeID=1Mon, 31 Jul 2017 07:24:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2932da5c-2220-4a58-9492-41729349ab0fSatheeshkumar<p>here i have updated my code... please give a solution..</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/94222?ContentTypeID=1Mon, 31 Jul 2017 06:02:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d068540a-e411-46c6-aa6b-745e6ce3b5caMartinBL<p>Hi, do you mind editing your question and include the code that shows how you configure and use your RTC and how you go to sleep?</p><div style="clear:both;"></div>