Enable and Disable different log level from zephyr CLI using Zephyr Logging API

RE: Enable and Disable different log level from zephyr CLI using Zephyr Logging API

Raoul — Wed, 23 Nov 2022 00:13:55 GMT

Hi Waqar,

No, so far I haven't implemented it myself. I'm attending some training this week, so I have little time to work on cases.

If you still need help with this in a few days, let me know and I can try to help with the implementation.

Best regards,

Raoul

RE: Enable and Disable different log level from zephyr CLI using Zephyr Logging API

Waqar Ahmed — Wed, 16 Nov 2022 09:35:08 GMT

Hi Raoul,

Have you implemented Runtime filtering? if yes give me some idea

Thanks

RE: Enable and Disable different log level from zephyr CLI using Zephyr Logging API

Raoul — Tue, 15 Nov 2022 14:14:15 GMT

Hi Waqar, you're completely right. Runtime filtering is fully supported, clearly stated here: https://docs.zephyrproject.org/latest/services/logging/index.html

Though I don't see any references to available shell commands in the docs. Thanks for making me aware, and let me know if you have further issues.

Raoul

RE: Enable and Disable different log level from zephyr CLI using Zephyr Logging API

Waqar Ahmed — Tue, 15 Nov 2022 10:32:21 GMT

Hi Raoul,
Yes you are right.

Logs can also be compiled in but filtered on run time using dedicate API. Run time filtering is independent for each backend and each source of log messages. Source of log messages can be a module or specific instance of the module.

RE: Enable and Disable different log level from zephyr CLI using Zephyr Logging API

Waqar Ahmed — Tue, 15 Nov 2022 09:24:40 GMT

Hi Raoul,

Thanks.

I have not a get a chance to implement in firmware. May b you are right. I will try it today.

RE: Enable and Disable different log level from zephyr CLI using Zephyr Logging API

Raoul — Mon, 14 Nov 2022 20:40:08 GMT

Hi Waqar, so you were able to achieve this?

Thanks for letting me know, I was certain that this wasn't going to be possible. The LOG statements in Zephyr are preprocessor macros, and reducing the log level for a module will normally ensure that the lower priority log statement don't get compiled into the image at all, so I didn't see how they could be reenabled through the Zephyr shell.

Thanks for sharing!

Best regards,

Raoul Pathak

RE: Enable and Disable different log level from zephyr CLI using Zephyr Logging API

Waqar Ahmed — Sat, 12 Nov 2022 23:11:59 GMT

Hi,
I have in dept studied the zephyr Logging module we can use achieve this using zephyr built in logging Api.
by setting following configuration
CONFIG_LOG_CMDS=y
and config logging immediate/deferred etc.

we can set different logging level.

C:\v1.9.0\zephyr\subsys\logging

Thanks