Remotely wake up ESP32 from Deep Sleep

[Phillip]

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!

[ab9nq-william]

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

[Phillip]

@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.

[lbernstone]

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.

[Phillip]

@lbernstone

Got it. Thanks again for your help.