how to run DTM on nrf5340

[Danny-]

HI Noridc

I am developing with nRF5340, and I need to proceed with DTM test to verify the chip in the production process.

I am currently using this routine C:\ncs\v2.6.0\zephyr\samples\bluetooth\hci_uart

I then added the following configuration to the prj file: 

CONFIG_BT_CTLR_DTM_HCI_SUPPORT=y

However, when I build, report the following error.

error: BT_CTLR_DTM_HCI_SUPPORT (defined at subsys/bluetooth\controller\Kconfig.dtm:6) is assigned in
a configuration file, but is not directly user-configurable (has no prompt). It gets its value
indirectly from other symbols. See
http://docs.zephyrproject.org/latest/kconfig.html#CONFIG_BT_CTLR_DTM_HCI_SUPPORT and/or look up
BT_CTLR_DTM_HCI_SUPPORT in the menuconfig/guiconfig interface. The Application Development Primer,
Setting Configuration Values, and Kconfig - Tips and Best Practices sections of the manual might be
helpful too.

How can I solve this problem? I am looking forward to your reply

David

[Elfving]

Hell David,

BT_CTLR_DTM_HCI_SUPPORT is not directly user-configurable. You can find an overview over the configurations you can use here.

We do have a DTM sample though, as well as a radio test sample. 

Regards,

Elfving

[Danny-]

hi Elfving

Thank you very much for your reply!

I saw that my current configuration showed a lack of dependencies, so I went further to find a relationship between them.

I found that when I added the following configuration to the prj.conf file, CONFIG_BT_CTLR_DTM_HCI=y worked successfully:

CONFIG_BT_LL_SW_SPLIT=y
CONFIG_BT_LL_SW_LLCP=y

After this, you can now communicate with nrf5340 normally through the serial port, and you can also successfully connect with the integrated detector CMW270.

May i ask that if this operation is reasonable, or how it is different from the sample you mentioned?

Regards,

David

[Elfving]

Yeah I think that solution would be more Zephyr specific, so it makes sense that it requires CONFIG_BT_LL_SW_SPLIT as that selects the Zephyr controller.

I would rather recommend the DTM or radio test sample though. I do not know a lot about the Zephyr variant, but don't see any reason why that would be any better. DTM should work fine with any device that supports instruction communication over 2-wire. This previous case seems to go over the same topic (DTM with CMW270), have a look at the answers there.

Regards,

Elfving

Edit: I guess not everything in that case I linked would be interesting. I was mainly thinking of this post by Kaja.

[Danny-]

Ok, I will try the sample you mentioned.

Thank you again for your help!

[Elfving]

No problem

Please let us know if there is anything else!