USBsrc
......\hw_config.c
......\main.c
......\stm32_it.c
......\system_stm32f10x.c
......\system_stm32l1xx.c
......\usb_desc.c
......\usb_endp.c
......\usb_istr.c
......\usb_prop.c
......\usb_pwr.c