Functions with 'void' parameter list return "ESP_ERR_INVALID_ARG" (documentation) (IDFGH-11163)

[nkaaf]

Answers checklist.

• I have read the documentation ESP-IDF Programming Guide and the issue is not addressed there.
• I have updated my IDF branch (master or release) to the latest version and checked that the issue is present there.
• I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

I wonder if there is a reason why functions without parameters (void) can return "ESP_ERR_INVALID_ARG" according to the documentation. I found two such functions in "esp_wifi.h", I don't know if there are more functions in the project:

• esp_wifi_start
• esp_wifi_clear_ap_list

If this is because underlaying functions can return the ESP_ERR_INVALID_ARG error, I could understand, but I find it very confusing because the "main" API functions that users call do not take parameters.

[hansw123]

hi @nkaaf
sorry for late reply
It is indeed because the function called inside the api returns ESP_ERR_INVALID_ARG, and we'll discuss whether to change the internal handling or change the description of the api to make it more accurate

[Indastri]

Closing the issue as completed. If you encounter more problems feel free to reopen this one or create a new issue.

Cheers!