How to debug Watchy ESP32S3 ?

[Aleksey-again]

I was able to compile and upload

How to debug or at least log some messages through serial ?

I see only the release configuration there.

[jantje]

How to debug

You need to compile in debug mode and start a debugger.

least log some messages through serial ?

Use Serial.print and open the serial monitor.
The Sloeber serial monitor can handle multiple connections at the same time. The connection is color/font coded.

[Aleksey-again]

You need to compile in debug mode and start a debugger.

How to do it ?