Problem:
You have code in your project such as
ESP_LOGI("MyTag", msg);
where msg
is a const char*
, but the project fails to compile with an error message such as
src/main.cpp:280:26: error: expected ')' before 'msg' 280 | ESP_LOGI("MyTag", msg);
Solution:
The format
parameter can’t be any string but needs to be a string constant. Replace your code by
ESP_LOGI("MyTag", "%s", msg);