Having a while loop in a IRQ is very bad practice. With IRQ's you want to do the absolute minimum in there because while you are in there doing something nothing else gets done.

There is an example of doing this in the examples.

It's all too complicated. I need a simple solution. I don't want to make this sound mean. But if you feel its to complicated maybe you should spend the time to learn it. It would not take long at all. Espressif has kindly given us MANY, MANY examples. Most of which are short and sweet, easy to lear...

There is a setting in menuconfig that allows you to adjust the Brownout voltage level. Have you tried playing with this?

https://www.espressif.com/en/news/ESP-S ... 20MultiNet.

This does not work for you?


printf("Compiled at:");
printf(__TIME__);
printf(" ");
printf(__DATE__);
printf("\r\n");

Have you looked at this ?
https://docs.espressif.com/projects/esp ... verter-adc

This article is Linux-based, but it more-or-less makes the point that needs to be made. The thing is: either you poll the volatile variable in a loop: volatile int i=0; .. while (!i) ; in which case there's the likelihood of a loop that spins for ever triggering the task watchdog, which you general...

You can make the variable volatile, but this generally is a hack... you'll run into other problems (watchdog timeouts) if you do this. Better to make use of e.g. a semaphore and block on that. I am really interested in your thoughts on this point. For many years I have been using volatile variables...

Espressif, I hope you don't take this the wrong way. Your my only solution for anything that needs a micro! We have used your ESP32 in many products now, with 0 issues for over 3 years now. We really like the ESP32-S3 part. However, your pumping silicon out faster than the software team can keep up....