esp_log_level_set("*", ESP_LOG_INFO) doesn't work (IDFGH-333)

[v1993]

Environment

• IDF version (git rev-parse --short HEAD to get the commit id.): 30545f4
• Development Env: Make
• Operating System: Ubuntu
• Power Supply: USB

Problem Description

After executing esp_log_level_set("*", ESP_LOG_INFO); debug messages from esp_timer module is still here.

Expected Behavior

1. Set Default log vebosity to debug.
2. Run esp_log_level_set("*", ESP_LOG_INFO);.
3. No more debug messages from modules.

Actual Behavior

1. Set Default log vebosity to debug.
2. Run esp_log_level_set("*", ESP_LOG_INFO);.
3. Still getting debug messages from modules.

Steps to repropduce

Listed above

[v1993]

Are there any news aboun this?

[projectgus]

Hi @v1993,

Sorry for the unacceptably long time it's taken someone to reply to you about this, and thanks for being patient.

The root cause for this is that some log lines have to be ISR-safe as they may be called with interrupts disabled, which means they use ESP_EARLY_LOGx macros instead of ESP_LOGx. Until now these macros aren't subject to any runtime filtering - if they're compiled in at the default log level then they're always going to log. The only current workaround is to define the LOG_LOCAL_LEVEL macro in the corresponding source files to change their compile-time log level.

We have a change in review that fixes this. It's still not possible to do tag-specific filtering on "early" log macros, but setting the default level with * will enable/disable them.

This issue will be updated when that fix is available (should be soon).