I want to implement my own USB Device Custom Class and there is an example from Keil, named WinUSB_Echo. See here:
https://www.keil.com/pack/doc/mw/USB/html/dev_cc_tutorial.html
Does anybody know, where I can find this?
This WinUSB_Echo example project exists only in some DFPs and for some boards. This knowledgebase article should answer your question:
developer.arm.com/.../latest
Many thanks. I found it!