[bl_mcu_sdk_usb_dc](https://github.com/bouffalolab/bl_mcu_sdk/blob/master/bsp/bsp_common/usb/usb_dc.c)
[bl_mcu_sdk_hal_usb](https://github.com/bouffalolab/bl_mcu_sdk/blob/master/drivers/bl702_driver/hal_drv/src/hal_usb.c)