https://devzone.nordicsemi.com/f/nordic-q-a/2695/logging-the-cpu-activity-in-softdeviceHi all, Can I log the processor activity when using a softdevice with nrf51822? What I mean is can I get an event or timer count when the processor wakes up and goes to sleep? Thanks and regards, Prithvien-USTelligent Community 13Thu, 05 Jun 2014 12:43:23 GMThttps://devzone.nordicsemi.com/thread/10549?ContentTypeID=1Thu, 05 Jun 2014 12:43:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ee16f78d-e96f-4d1f-abc1-0b3144a235fbH&#229;kon Alseth<p>No, there is no such feature in the softdevice. If you want to evaluate the activity, I would recommend measuring the current consumption using an oscilloscope (hook up a &lt; 10 ohm series resistor on VCC_NRF). The only task to do in main is to go to sleep.</p> <p>If you want to evaluate how much CPU is being used by the softdevice while in a connection, you can toggle a GPIO (with no sleep-function) in main and look at the toggling over time.</p><div style="clear:both;"></div>