Ok. Thank you. As far as I understand, the operations I want to do with the timer are It is wrong to use it inside "void ARDUINO_ISR_ATTR onTimer(){ } ". I have to use it inside the "loop". Otherwise, when my operations are delayed a little, I get the error "Guru Meditation Error: Core 1 panic'ed (I...

I am using the sample code in link: https://espressif-docs.readthedocs-hosted.com/projects/arduino-esp32/en/latest/api/timer.html my platform Arduino 2.2.1 my Board library : Esp32 by Espressif systems 2.0.11 And I get erros for examle : C:\Users\leno\AppData\Local\Temp\.arduinoIDE-unsaved2023118-15...