RE: MPSL and timeslots using the radio fails with assert on nrf5340

Guojun Wang — Wed, 06 May 2020 16:14:11 GMT

Great! You are welcome.

RE: MPSL and timeslots using the radio fails with assert on nrf5340

Andreas L — Wed, 06 May 2020 15:46:20 GMT

It turned out I left the radio in RX still after the timeslot had ended. I'll look at the softdevice documentation to get a better understanding of the functionality.

Thank you for the help!

RE: MPSL and timeslots using the radio fails with assert on nrf5340

Guojun Wang — Wed, 06 May 2020 09:48:34 GMT

Hi Andreas,

You can only access radio within the request timeslot length (if approved).
The assert basically means you have used reserved peripherals (radio or timer0) outside the requested timeslot.

The MPSL library is very new into NCS, and more documentation will be added in the future.

Timeslot is ported from SoftDevice to MPSL. To have a better understanding how to use the radio peripheral within a timeslot session, you can take a look of the timeslot documentation in SoftDevice Specification, for instance https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsds_s140%2FSDS%2Fs1xx%2Fs140.html&cp=4_6_3_0.

For nRF53, there are also some limitations when you run application in the network core with ble_controller and mpsl: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.2.0/nrfxlib/ble_controller/doc/ble_controller.html

In addition:

Do you run the application in application core or in the network core?
It would be nice if you can provide a minimum code with instruction, so that we can re-produce the assert, if you still have this issue afterwards.