nRF52833DK not building for DTM example

[vin]

Hi, 

I tried to build and programm this DTM example from this SDK example:   ncs\v1.6.1\nrf\samples\bluetooth\direct_test_mode  

I got this following  error. Do you know where I can find this file or function or why I am getting this error?  As below and the figure below: 

'DT_N_S_zephyr_user_P_dtm_antenna_count' undeclared (first use in this function)

[Håkon Alseth]

Hi,

 

I can confirm that the sample does not compile out-of-the-box with nrf52833dk_nrf52833 board.

The reason is this define is being set (due to hardware supporting AoA/AoD):

https://github.com/nrfconnect/sdk-nrf/blob/v1.6.1/samples/bluetooth/direct_test_mode/src/dtm_hw_config.h#L16

 

The current fix is to define this in your $BOARD.overlay file:

https://github.com/nrfconnect/sdk-nrf/blob/v1.6.1/samples/bluetooth/direct_test_mode/boards/nrf5340dk_nrf5340_cpunet.overlay#L1-L22

 

If you copy the above overlay file to nrf52833dk_nrf52833.overlay, and reconfigure/compile, it should run as expected.

 

I'll report this internally as a bug. It should not fail to compile if these aren't defined. My apologies for the inconvenience!

*edit* PR proposal to fix it here: https://github.com/nrfconnect/sdk-nrf/pull/5531 

 

Kind regards,

Håkon

[vin]

Hi Hakon, 

The first time when I loaded the overlay file and compile, it still have the same error as I mentioned earlier. When I click on the overlay file at the IDE, it is there. 

Then I close the IDE and open again and recompile again, this time it runs without error. Do you know why it works after I close and open again the IDE and then build again? 

Regards, 

Kelvin

[Håkon Alseth]

Hi Kelvin,

 

vin said:

The first time when I loaded the overlay file and compile, it still have the same error as I mentioned earlier. When I click on the overlay file at the IDE, it is there. 

Then I close the IDE and open again and recompile again, this time it runs without error. Do you know why it works after I close and open again the IDE and then build again? 

It is not always that the current build is able to detect certain DTS changes on-the-fly, meaning that you might have to re-generate the build-folder (ie. delete it and re-import the ncs project). I suspect that this is what's happening on your end. Could you try deleting/clearing the build folder and reimporting the project?

 

Kind regards,

Håkon

[vin]

Hi Hakon, 

Thank you for your explanation, this is clear. It is working now after I close and open the IDE and recompile again, hence I will put your suggestions in regenerating the build folder in mind. Please can you close this ticket. Thank you. 

Kelvin