issue about NCS Logging

[Hannibalhz]

Dear Nordic Engineers

I have a problem with NCS Logging and would like to ask you.

I would like to print two different level of Log.

For example,  I have two backend RTT and FS. I would like to use RTT to print DBG level Log, use FS to print INF level Log.

What should I do?

Please give me some good suggestions.

Best regards,

[Sigurd Hellesvik]

Hi Wang,

We do not have any such functionality.

Maybe create one project configuration for developement, with log levels set to DBG.
Then also have one project configuration for release, with log levels set to INF?

You can see that this is what is done in our Application samples. See for example nRF Desktop Build Types.

If you need different log levels in your logging, a solution would be to fork the zephyr part of the nRF Connect SDK and make changes to zephyr/subsys/logging.

Regards,
Sigurd Hellesvik

[Sigurd Hellesvik]

Hi,

Update: Good news, I was wrong.

Our developers tell me that:

"You can do that but you need to enable runtime filtering CONFIG_LOG_RUNTIME_FILTERING=y
then log_backend_enable() enables backend with given upper level. Also there is log_filter_set function which configures level for each logging source and backend. This is nicely handled in shell, see `log enable` command."

Regards,
Sigurd Hellesvik