Note

Support Chip List

all of CH chips with usb HD ip are supported, like CH57x、CH58x、CH32Vxxx、CH32Fxxx

Before Use

Your should implement usb_dc_low_level_init and usb_dc_low_level_deinit.

Enable or disable USB clock and set USB clock for 48M.
Enable or disable gpio and gpio clk for usb dp and dm.
Enable or disable usb irq