https://devzone.nordicsemi.com/f/nordic-q-a/4015/understanding-current-consumption-with-twi-and-s310-softdevice50ms_measure_30ms_other.jpg Attached is current measured using the s310 softdevice Every 50ms timer takes a twi measurement, which is a twi 6 byte read followed immediately by a twi 1 byte write Why does this measurement appear as 2 current peaksen-USTelligent Community 13Wed, 08 Oct 2014 09:18:12 GMThttps://devzone.nordicsemi.com/thread/14412?ContentTypeID=1Wed, 08 Oct 2014 09:18:12 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bb367c61-0713-4f5e-8dfd-474f32484861Stefan Birnir Sverrisson<p>Hi</p> <p>When in a BLE connection, the radio is enabled periodically even when not transmitting any payload data, it is just to maintain the connection. The radio will consume high current, 10-15mA. So if the BLE connection interval is set to 30ms in your application, that would explain the 30ms peaks.</p> <p>The same goes for the ANT side of your application, if you are broadcasting or receiving , it will do so periodically, and therefore enable the radio periodically.</p> <p>So in short, BLE protocol will generate periodic current peaks and ANT protocol will generate additional periodic current peaks with different frequency. Could that be what we are looking at in your attached image?</p><div style="clear:both;"></div>