ESP32 GPIO Configuration (gpio_pad_select_gpio)

[Rrobinet]

Hello,

I couldn't find in the ESP32 documentation any reference to

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gpio_pad_select_gpio()

Is this function obsolete or replaced by :

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gpio_config()

Alternatively where can I found a description and of course the need to use various gpio_pad_xx() functions.

Thanks in advance
Robert

[Sprite]

It's a ROM function... i think you need to #include "esp_rom_gpio.h" before you can use it, but it may be that it's renamed to esp_rom_gpio_pad_select_gpio() there (to distinguish it as a ROM function). Note that you probably want to use something like gpio_reset_pin() (or use gpio_config, which also does this as part of the process) as gpio_pad_select_gpio doesn't cover all cases anymore on newer chips.

[Rrobinet]

OK .... I understand it but after some tests despite the fact lack of documentation (with the exception of the one of Kolban)
Thanks
Robert

[Sprite]

I've made an internal issue over the lack of documentation, for what it's worth.

[dg9ngf]

This helped: https://github.com/espressif/ESP8266_RTOS_SDK/pull/477

I needed to add this to get the function:

#include <rom/gpio.h>

And apparently this function is undocumented outside the source code. Isn't the online documentation generated from the code?