ESP32 Forum

Posted: **Wed Nov 08, 2017 4:13 am**

Is it possible to set an RTC GPIO pin to high inside the wake stub?

Cheers,
Mustafa

Posted: **Wed Nov 08, 2017 6:51 am**

Got it:

I can use gpio_output_set from gpio.h library:

to trigger a pin to HIGH, find the pin register, i.e. for IO4 it is BIT4 and:

gpio_output_set(BIT4, 0, BIT4, 0);

similarly, to trigger the pin to low:

gpio_output_set(0, BIT4, BIT4, 0);

Setting a GPIO pin to high inside the wake stub