https://devzone.nordicsemi.com/f/nordic-q-a/17327/need-nrf8001-to-advertise-while-microcontroller-asleepI&#39;m using an NRF8001 with an ATMEL ATMEGA 328P (the microcontroller from an Arduino). I need the microcontroller to go to sleep, but still allow the BLE chip to advertise and wake the microcontroller upon connection. It seems as though the BLE chip shoulden-USTelligent Community 13Wed, 26 Oct 2016 21:05:36 GMThttps://devzone.nordicsemi.com/thread/66582?ContentTypeID=1Wed, 26 Oct 2016 21:05:36 GMT137ad170-7792-4731-bb38-c0d22fbe4515:05ec4d5e-6448-4d1c-a707-1947787c9a7dawneil<p>Have you looked at Nordic&#39;s SDK - and the included examples:</p> <p>ble-sdk-arduino</p> <p><a href="https://github.com/NordicSemiconductor/ble-sdk-arduino">github.com/.../ble-sdk-arduino</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/66580?ContentTypeID=1Wed, 26 Oct 2016 14:28:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:60130df5-632d-4ff1-a119-e7bf9d115ad6run_ar<p>I assume this is the adafruit library, so I don&#39;t know the details, but I would assume BTLEserial.pollACI only checks if the nRF8001 has any new events. To start advertising you need to send broadcast, connect or bond command to the chip.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/66581?ContentTypeID=1Wed, 26 Oct 2016 11:27:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ba8eeb9c-f6f0-4ddc-8472-1b57d8f635a1awneil<p>Yes, the NRF8001 certainly <strong><em>can</em></strong> advertise while its controlling &quot;host&quot; is asleep - it is autonomous in this.</p> <p>So the problem lies on your &quot;host&quot; side.</p> <p>Does the advertising work if you don&#39;t put your AVR to sleep?</p><div style="clear:both;"></div>