USB测试代码
...........\keyboard_fourKeys
...........\.................\Backup of keyboard_Example.ewd
...........\.................\Backup of keyboard_Example.ewp
...........\.................\Debug
...........\.................\.....\Exe
...........\.................\.....\...\keyboard_Example.txt
...........\.................\.....\List
...........\.................\.....\Obj
...........\.................\.....\...\descriptors.pbi
...........\.................\.....\...\descriptors.pbi.cout
...........\.................\.....\...\descriptors.r43
...........\.................\.....\...\dma.pbi
...........\.................\.....\...\dma.pbi.cout
...........\.................\.....\...\dma.r43
...........\.................\.....\...\HAL_FLASH.pbi
...........\.................\.....\...\HAL_FLASH.pbi.cout
...........\.................\.....\...\HAL_FLASH.r43
...........\.................\.....\...\HAL_PMAP.pbi
...........\.................\.....\...\HAL_PMAP.pbi.cout
...........\.................\.....\...\HAL_PMAP.r43
...........\.................\.....\...\HAL_PMM.pbi
...........\.................\.....\...\HAL_PMM.pbi.cout
...........\.................\.....\...\HAL_PMM.r43
...........\.................\.....\...\HAL_TLV.pbi
...........\.................\.....\...\HAL_TLV.pbi.cout
...........\.................\.....\...\HAL_TLV.r43
...........\.................\.....\...\HAL_UCS.pbi
...........\.................\.....\...\HAL_UCS.pbi.cout
...........\.................\.....\...\HAL_UCS.r43
...........\.................\.....\...\keyboard_Example.pbd
...........\.................\.....\...\keyboard_Example.pbd.browse
...........\.................\.....\...\main.pbi
...........\.................\.....\...\main.pbi.cout
...........\.................\.....\...\main.r43
...........\.................\.....\...\usb.pbi
...........\.................\.....\...\usb.pbi.cout
...........\.................\.....\...\UsbCdc.pbi
...........\.................\.....\...\UsbCdc.pbi.cout
...........\.................\.....\...\UsbCdc.r43
...........\.................\.....\...\usbConstructs.pbi
...........\.................\.....\...\usbConstructs.pbi.cout
...........\.................\.....\...\usbConstructs.r43
...........\.................\.....\...\usbEventHandling.pbi
...........\.................\.....\...\usbEventHandling.pbi.cout
...........\.................\.....\...\usbEventHandling.r43
...........\.................\.....\...\UsbHid.pbi
...........\.................\.....\...\UsbHid.pbi.cout
...........\.................\.....\...\UsbHid.r43
...........\.................\.....\...\UsbHidReq.pbi
...........\.................\.....\...\UsbHidReq.pbi.cout
...........\.................\.....\...\UsbHidReq.r43
...........\.................\.....\...\UsbIsr.pbi
...........\.................\.....\...\UsbIsr.pbi.cout
...........\.................\.....\...\UsbIsr.r43
...........\.................\.....\...\UsbMscReq.pbi
...........\.................\.....\...\UsbMscReq.pbi.cout
...........\.................\.....\...\UsbMscReq.r43
...........\.................\.....\...\UsbMscScsi.pbi
...........\.................\.....\...\UsbMscScsi.pbi.cout
...........\.................\.....\...\UsbMscScsi.r43
...........\.................\.....\...\UsbMscStateMachine.pbi
...........\.................\.....\...\UsbMscStateMachine.pbi.cout
...........\.................\.....\...\UsbMscStateMachine.r43
...........\.................\.....\...\UsbPHDC.pbi
...........\.................\.....\...\UsbPHDC.pbi.cout
...........\.................\.....\...\UsbPHDC.r43
...........\.................\F5xx_F6xx_Core_Lib
...........\.................\..................\HAL_FLASH.c
...........\.................\..................\HAL_FLASH.h
...........\.................\..................\HAL_MACROS.h
...........\.................\..................\HAL_PMAP.c
...........\.................\..................\HAL_PMAP.h
...........\.................\..................\HAL_PMM.c
...........\.................\..................\HAL_PMM.h
...........\.........