how to test direct_test_mode with nrf21540 in NCS1.8?

[yoyou]

Hello,

NCS1.8.0   Windows10  X64;

i test   v1.8.0\nrf\samples\bluetooth\direct_test_mode, and i want to use nrf21540 model.

i've set CONFIG_NRF21540_FEM=y  and do Project->Run CMake, but nrf21540 is not enabled.

if i forcibly enable it,

got error "DT_N_NODELABEL_nrf_radio_fem_P_spi_if_IDX_0_PH_BUS_P_label" undeclared here (not in a function)

   

thanks

Best Regards

[yoyou]

Hello,

thanks for reply,

my project use nRF5340+nRF21540,

need use 128MHz for audio encode, and nRF21540 for long rang.

In the future periodic_adv+periodic_sync for Low quality audio.

as zip codes,is my test,i do not know how to use 21540 send/recv data.

nrf21540_test.zip

  

thanks

Best Regards

[Øivind]

Ok, what you are looking to do is possible. You are using a nrf5340dk board like this, correct?

https://www.nordicsemi.com/Products/Development-hardware/nRF5340-DK

Looks like the board files are not set up for the nRF21540, but I'm going to try to get you the files needed to do that.

[yoyou]

Hello,

thanks for reply,

yes,i'm using nRF5340-DK with nRF21540 Evaluation Kit.

i will waiting for you.

thanks

Best Regards

[Øivind]

Hi again, turns out this is pretty simple. You just need to add the nrf21540 evaluation kit as a SHIELD when building. For a multi-image build that builds hci_rpmsg for the network core, you would use:

west build -b nrf5340dk_nrf5340_cpuapp -- -D SHIELD=nrf21540_ek -D hci_rpmsg_SHIELD=nrf21540_ek

No other changes are needed. If you build the images for the cores separately, this needs to be done for both images.

[yoyou]

Hi,

thanks for reply,

VS Code,error

  

thanks

Best Regards