BLE direction finding and register reset

RE: BLE direction finding and register reset

Simonr — Fri, 04 Nov 2022 09:12:50 GMT

Yes, the nRF52820 is supported in the nRF Connect SDK, but as we don't have a dedicated Development Kit for the nRF52820, we haven't made a board file for an nRF52820 design, as that will have to be done for your specific design anyway, letting you use the GPIOs for what you want, and enable only the peripherals you need, and so on. You can see our user guide on how to create your own boards during application development here.

Best regards,

Simon

RE: BLE direction finding and register reset

patrik.tiainen — Fri, 04 Nov 2022 07:41:16 GMT

Hi Simon,

Thank you for your definitive answer.

I'm a bit dissapointed that it was easy to miss that information when selecting a SDK.

Does the nRF SDK Connect support the nRF52820? I have only seen that the emulation of nRF52820 exist.

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.1.1/zephyr/boards/arm/nrf52833dk_nrf52820/doc/index.html#nrf52833dk-nrf52820

So do I need to develop a cosutom configuration to make it work at a nRF52820?

Best regards,

Patrik

RE: BLE direction finding and register reset

Simonr — Thu, 03 Nov 2022 12:29:36 GMT

Hi Patrik

The nRF5 SDK does not support the BLE direction finding feature. The HW does, but the SoftDevice(s) in the nRF5 SDK does not include the Direction Finding features, so you will need to move to the nRF Connect SDK to comply with the Bluetooth LE specs.

You should be able to do direction finding on the bare-metal solution in the nRF5 SDK, but this won't comply with the Bluetooth specification, just so you know. Most likely, the reason the radio register is reset is because the SoftDevice won't allow you to play around with the radio registers. There is more info on how to use the registers to enable direction finding (DFE and CTE) in this whitepaper.

Best regards,

Simon