nrf52832 Radio Rx operation on sfotdevice

RE: nrf52832 Radio Rx operation on sfotdevice

Otavio Borges — Tue, 07 Nov 2017 12:46:22 GMT

Great, thanks Jan

RE: nrf52832 Radio Rx operation on sfotdevice

endnode — Tue, 07 Nov 2017 12:39:05 GMT

Yes, based on previous answers from Nordic team on this forum when you indicate in ADV flags that your broadcaster is non-scannable and non-connectable then Soft Device should automatically skip Rx part and use less power. But I haven't verified it myself with power kit or similar method...

RE: nrf52832 Radio Rx operation on sfotdevice

Otavio Borges — Tue, 07 Nov 2017 12:00:12 GMT

I understand softdevice will schedule only necessary events in other to save the maximum amount of power. but is it enough changing advertising params from BLE_GAP_ADV_TYPE_ADV_IND to BLE_GAP_ADV_TYPE_ADV_NONCONN_IND to do so? Is there any other softdevice config that will achieve such? Considering that we'll use two BLE profiles (I didn't find similar questions on the forum).

RE: nrf52832 Radio Rx operation on sfotdevice

endnode — Tue, 01 Aug 2017 17:29:29 GMT

Hello Otavio,

With concurrent role it's more complex then you probably imagine, however Nordic stack indeed does some prioritization to schedule all necessary events or at least to maintain all of them with as few losses as possible. Read more about that in Soft Device Specification.

When it comes to power saving than again believe that Nordic stack isn't stupid so radio (either Tx or Rx "window") is powered only exactly when it is needed. Therefore Soft Device runs many virtual timers and schedules actions with microsecond accuracy.

Cheers Jan