https://devzone.nordicsemi.com/f/nordic-q-a/36083/maximal-power-efficiency-in-main-loopHi, I&#39;m using the NRF52840 SDK version V15. My program uses: 1. softdevice (BLE communication) 2. SPI uses using SPIM interface in nonblocking mode. 3. Timer event using app_timer_start (SPI not triggered by interrupts). All the processing isen-USTelligent Community 13Thu, 05 Jul 2018 05:57:11 GMThttps://devzone.nordicsemi.com/thread/139041?ContentTypeID=1Thu, 05 Jul 2018 05:57:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:49cccf7f-1a1b-48ba-aa90-2396939e6ae0Daniel Reisfeld<p>Thanks Ayran!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/139028?ContentTypeID=1Wed, 04 Jul 2018 20:32:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7010a46a-2734-4e85-b439-555c93cd5316Susheel Nuguru<p>Hi Daniel,</p> <p>Just calling the below in the end of main function will be enough</p> <p><pre class="ui-code" data-mode="text"> for (;;) { sd_app_evt_wait(); }</pre></p><div style="clear:both;"></div>