The usbd_event_handler function entered USBD_EVENT_INIT, but there were no further prints. This is the UART print content:
MSC: waiting for sd0 …
SD card ready: block 512 bytes, total 61067264 blocks, 29818 MB
MSC: sd0 ready.
The USB on Huangshanpai is only connected to the CH340 for debugging and downloading, and is not connected to SF32’s own USB.