Register-level examples for "more complex" interfaces, e.g. USB
Part of dialog between @TDK and me from https://community.st.com/s/question/0D53W00001EhiPhSAJ/wtf-go-back-to-old-community :[me] [linking to https://community.st.com/s/idea/0873W000000KyjfQAC/detail which asks for register-level examples for every ...