Thank you for this information.

Maybe i can figure out which versions were in use. Just for curiosity.

Since my experiences in an earlier esp32 project i was sure that the millis() value isn't maintained over light-sleep. And i had to use the RTC myself to determine the sleep time. Now more or less by accident i recognized that the millis() value is indeed corrected after wakeup from light-sleep. Doe...

I see. That's no problem at all. i just thought i was blind .
Maybe a hint in the documentation about missing chapters would be helpful.
But thank you for your explanation.

In https://docs.espressif.com/projects/arduino-esp32/en/latest/libraries.html the SDMMC peripheral is listed as supported for ESP32 plattform. So i expected documentation in https://docs.espressif.com/projects/arduino-esp32/en/latest/libraries.html#apis . But there it isn't. Can somebody give me a h...