Porting nrf52833 code on nrf5340

[NCKGTW]

Dear Staff,

I have a nrf52833dk application code  which I have to "port" on the nrf5340dk. The code implements the following requirements:

1. Direction finding transmitter with:
   1. extended advertising
   2. periodic advertising with CTE packets (AoA)
2. I2C Slave with TWIS interface

We are a little bit confused since in the following post the nrf52833 seems to be the one qualified to send the AoA packet:

sdk and direction finding chip correlation - Nordic Q&A - Nordic DevZone - Nordic DevZone

While in another ticket and into your documentation also the 5340 can send such packets:

AoA packet with nRF52840 - Nordic Q&A - Nordic DevZone - Nordic DevZone

Bluetooth Direction Finding - nordicsemi.com

So What does it mean , "Qualification" ?

Can you confirm the points 1 and 2 are feasible  with nrf5340 DK ? Can I use nrf5340 as AoA transmitter ?

In addition, if nrf5340 is good for above requirements , is there any limitation in using direction finding and BLE Audio profiles all together  with such nrf5340dk board ? Can we use both functionalities in parallel?

Thanks a lot

[SwRa]

Hi Nicola,

The nRF5340 radio supports both AoA and AoD modes, and the SDK samples allow you to configure the device as a transmitter for AoA scenarios. It is capable of generating and transmitting CTE (Constant Tone Extension) packets as required for direction finding applications. Qualification here refers to the Bluetooth SIG qualification.. The nRF52833 is the SoC that is fully qualified for direction finding. The nRF5340 though has the same support for AoA as the nRf52833.

In addition, if nrf5340 is good for above requirements , is there any limitation in using direction finding and BLE Audio profiles all together  with such nrf5340dk board ? Can we use both functionalities in parallel?

Yes, the nRF5340 can support both direction finding and LE Audio.. But, you will need to check if the memory consumption with both the features enabled would be enough as these are 2 large functions. Note that the SDC only supports AoA transmitter functionality: https://docs.nordicsemi.com/bundle/ncs-latest/page/nrfxlib/softdevice_controller/README.html 

Best Regards,

Swathy