Reclaim GPIO after deep sleep reset

[jeremy]

Hi,

I'm having issues with using the LEDC timer to drive a gpio wherein if I isolate the RTC gpio before deep sleep, after wakeup the pin is still disconnected and is unable to be controlled by the LEDC peripheral. I don't have any errors or anything, the pin simply does nothing.

This is how I am isolating the pin:

Code: Select all

rtc_gpio_isolate(GPIO_NUM_18);

I seem to recall that there is a function which "un-isolates" the pin, but I am unable to find it. Could someone please help point me in the right direction?

Thanks,
Jeremy

[ESP_houwenxiang]

Hi, Jeremy
please call `rtc_gpio_hold_dis` to disable the gpio hold function first, the `rtc_gpio_isolate` have enabled the gpio hold functon and the gpio status can not be changed if this function is setted.

thanks !!