Problem
ESP32 becomes completely frozen and unresponsive when the external 32kHz crystal stops oscillating, even with GPIO EXT0 interrupt configured as alternate wakeup. The device cannot complete boot until the crystal resumes functioning.

Hardware Setup
MCU: ESP32 WROOM-32 (16MB flash)
RTC Clock ...

I tried to search the forum about this:
Is it now possible using esp32 s2, put the the cpu in light sleep while keeping the BLE connection alive?
From my understanding that is true for the wi-fi connection so i wonder if the same can be done with BLE.
Thanks

Nobody can contribute on this? or stupid question?

I tried to search the forum about this:
Is it now possible using esp32 s2, put the the cpu in light sleep while keeping the BLE connection alive?
From my understanding that is true for the wi-fi connection so i wonder if the same can be done with BLE.
Thanks

Did you have any success?

Thank you Wifive for the answer. The part number i am using is ESP32-WROOM-32E(M113EH3200PH3Q0) . this is the module with pcb antenna . The certification have to be done in the USA , and there are the labs where i get the quotes. So if i understand correctly your answer : i don't need any additional ...

Hi,
i am close to the end of a product based on the Esp32 wroom 32E module (with its own pcb antenna).
This product has to be produced in large quantities. One of the reason because i choose the esp32 was that it is a preapproved module , with a large amount of certification available. My projet ...

Thank you ESP- sprite-. I found a work around without using the rtc functions from arduino loop. If you want to post an example here , of a function to make the rtc functions available to core one , all the other users can benefit of this .It Is something that i have not found during my extended ...

Please let me know if my question is stupid or too difficult or not so interesting or out of theme. So i can improve my contribution to this forum. My goal is always to find and share my solutions. Thank you.

Hi All!
Here is the scenario:
I am using ESp32 wroom 32E with platformio and arduino framework.
In my code the most of the time the CPU is in deep sleep state.
When the wake up is triggered , it executes a customized wakeup stub that i wrote and that works perfectly. All the code and the variables ...