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

ref: 5d5e3d6c63345fc19e6434813393c0c8e4d9c830 stm32h747i-disco-usb-image-viewer/src/registers.c -rw-r--r-- 983 bytes
fix: clear bit operation
chore: some renames
feat: add registers, pin, exti, usb_device skeleton