~ruther/stm32h747i-disco-usb-image-viewer

ref: 079ff751c0e9b65d936aa656e697257faebbb871 stm32h747i-disco-usb-image-viewer/src/clocks.c -rw-r--r-- 1.7 KiB 
feat: implement usb devicd cdc descriptors, init, setup