ESP32 C3 WROOM and Deepsleep Wakeup

[user4950]

Hello everyone,
I am searching for a Solution using the ESP32 C3 WROOM and Deepsleep Wakeup (External Wakeup Source).
I cannot use multiple Pushbuttons to Wakeup the ESP from Deepsleep, I researched alot, but I found nothing which helps me.
So my Questions would be if somebody can help me with this.
It would be great if somebody could tell me wether the ESP32 C3 is capable of using External Wakeups and how to use these.
These are not like the normal EXT0 or EXT1 Wakeups, they are another type of.
I don't know, but the GPIOs I use for the Pushbuttons are 0,1,3,4 as they are the only RTC GPIOs on the ESP32 C3.
The Documentation of the IDF isn't good for that, it isn't described good and is also hard to understand.

If anybody knows the answer or has some Example Code for me it would be very nice to hear from you.

Thank you in advance.