Controlling the FEM module in a MPSL timeslot

RE: Controlling the FEM module in a MPSL timeslot

Hieu — Mon, 27 Mar 2023 15:33:14 GMT

It is indeed not the easiest APIs to figure out. I too had to ask our MPSL team to confirm it.

Sorry that we don't have a sample for it right now. The best we have is how we do it in the 802.15.4 driver like I have shared. I will also put in a note with our teams to see if a sample can be made. Thank you for this feedback.

I will verify my last reply then. For future reference, it is also possible for you to do it.

RE: Controlling the FEM module in a MPSL timeslot

Even Falch-Larsen — Fri, 24 Mar 2023 08:18:39 GMT

Thanks it was a bit hard to understand how to use this function, I kind of guessed that it was that one. It would be nice with some example showing the usage of this function in the sample section. It seems like a fairly common use-case. You can close this case now.

RE: Controlling the FEM module in a MPSL timeslot

Hieu — Wed, 22 Mar 2023 08:19:50 GMT

Hi Even,

You can control the FEM during a MPSL timeslot by using these APIs, documented in the same page you linked:

mpsl_fem_pa_configuration_set/clear
mpsl_fem_lna_configuration_set/clear

You can refer to how this is done in our 802.15.4 radio driver code here:

https://github.com/nrfconnect/sdk-nrfxlib/blob/v2.3.0/nrf_802154/driver/src/nrf_802154_trx.c#L407-L441

Hieu