softdevice controller example code?

RE: softdevice controller example code?

protobits — Tue, 19 Jan 2021 17:41:50 GMT

Ok, I will try to put something together and see if there's information missing. Thank you!

RE: softdevice controller example code?

Kenneth — Tue, 19 Jan 2021 16:00:44 GMT

There is some MPSL documentation explaining the expected interrupt configuration: Integration notes — nrfxlib 1.4.99 documentation (nordicsemi.com). The SoftDevice controller documents its requirements related to thread safety: Integration with applications — nrfxlib 1.4.99 documentation (nordicsemi.com). If there is something that can be improved, let us know.

RE: softdevice controller example code?

protobits — Tue, 19 Jan 2021 14:06:48 GMT

Thanks, I just found out this code as well. It is quite useful.

My only remaining question is about interrupt priorities (as I don't see in that code how these are handled): if my RTOS uses interrupts (and, particularly SVcall exceptions for context switches), do these need to be lower priority? Or is it OK to have everything same priority?

RE: softdevice controller example code?

Kenneth — Tue, 19 Jan 2021 14:04:22 GMT

Try:

Sample code from Zephyr (NCS) that uses the controller: https://github.com/nrfconnect/sdk-nrf/blob/master/subsys/bluetooth/controller/hci_driver.c
Note: you'll need to initialize MPSL as well https://github.com/nrfconnect/sdk-nrf/blob/master/subsys/mpsl/mpsl_init.c

RE: softdevice controller example code?

protobits — Mon, 18 Jan 2021 17:40:55 GMT

Yes, I've read this documentation. But there's no example code and it is a bit superficial.

I understand that Zephyr uses its own open-source controller. Or is there zephyr code which uses the SDC that I can look? (I looked but couldn't find anything)

RE: softdevice controller example code?

Kenneth — Mon, 18 Jan 2021 17:38:43 GMT

It should be possible to use the softdevice controller with other RTOS than zephyr, but not something I have tried. Hopefully these pages can give some guidance:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/softdevice_controller/README.html

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/softdevice_controller/doc/softdevice_controller.html