ESP32 Forum

From all that I have read there seems to be only four(4) ways to wake an ESP32 once it is in Deep Sleep mode:
single GPIO, multiple GPIO, touch and timer.

What I would like to do is remotely wake a MCU from Deep Sleep.

Does anyone know how to do this or is it even possible? I suspect the answer will be No!, but perhaps someone knows of a way to do this.

In my case my MCU's are only about 20 ft apart so I will be able to 'hard wire' the trigger from the SENDER mcu to the RECEIVER mcu.

All suggestions or comments are most welcome.

Thanks!

Very complete article on Deep Sleep and Wakeup can be found here:

Renzo Mischianti's website is the most complete on the web

Check out my post in the Showcase on using a transceiver to wake up the ESP32 using an external interrupt:

ESP32 DEVKIT V1: nRF24L01 Switch remote, battery on/off

Wish you well with your project!

William

@ab9nq-william

Excellent! Thank you for your post. I will indeed take a look at all that you provided.

I have no issues waking up an ESP32 from DS, I just would like to do so remotely.

Thanks again for your help. I will get back to you soon.

I also do it on some devices with an IR remote (line of sight). Common denominator is something able to provide an electrical interrupt while the cpu is not available.

@lbernstone

Got it. Thanks again for your help.