RE: Synchronize RF switch to BLE activity

maximevince — Wed, 30 Mar 2022 07:53:40 GMT

Thanks for your reply. None of the existing 3-wire or 1-wire interfaces exactly fit our use-case, but as stated in the IEEE 802.15.4 External Radio Coexistence — nrfxlib 1.9.99 documentation (nordicsemi.com) page:

If the radio coexistence implementation provided in nRF Connect SDK is not compatible with the PTA used in your system, you can implement a software module compatible with your PTA that exposes the radio coexistence API, using the nrf/subsys/mpsl/cx/thread/mpsl_cx_thread.c file as an example.

Which is what we'll do. Thanks!

RE: Synchronize RF switch to BLE activity

JONATHAN LL — Tue, 29 Mar 2022 11:39:08 GMT

Hi,

[quote user=""]We have a design where we'd like to share the 2.4 GHz antenna between WiFi and BLE.[/quote]

This can be done.

[quote user=""]Is there a way to configure the MCU so it wakes slightly before any RF slot, so that the firmware gets a possibility to configure the RF switch in time?[/quote]

There are some coexistence options:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrfxlib/mpsl/doc/bluetooth_coex.html#bluetooth-coex

Bluetooth: External radio coexistence using 1-wire interface — nRF Connect SDK 1.9.99 documentation (nordicsemi.com)

This is most likely the one you want to look at: IEEE 802.15.4 External Radio Coexistence — nrfxlib 1.9.99 documentation (nordicsemi.com)

Regards,
Jonathan