USB_ENDPOINT_XFER_ISOC Isochronous endpoint type (currently not supported) 等时端点类型(当前不支持)Constant Value: 1 (0x00000001) USB_ENDPOINT_XFER_BULK Bulk endpoint type 批量端点类型 Constant Value: 2 (0x00000002) USB_ENDPOINT_XFER_INT Interrupt endpoint type 中断端点类型 Constant Value: 3 (0x...