51 read and write USB program source code, the principle diagram corresponds to a file, you can learn under the USB agreement

51usb
.....\原理图.pdf
.....\固件程序
.....\........\Chap_9.c
.....\........\Chap_9.h
.....\........\Chap_9.LST
.....\........\Chap_9.OBJ
.....\........\D12ci.asm
.....\........\D12CI.h
.....\........\D12ci.LST
.....\........\D12ci.OBJ
.....\........\D12Config.h
.....\........\D12Driver.c
.....\........\D12Driver.h
.....\........\D12Driver.LST
.....\........\D12Driver.OBJ
.....\........\D12HAL.c
.....\........\D12HAL.h
.....\........\D12HAL.LST
.....\........\D12HAL.OBJ
.....\........\Descriptor.c
.....\........\Descriptor.h
.....\........\Descriptor.LST
.....\........\Descriptor.OBJ
.....\........\Main.c
.....\........\Main.LST
.....\........\Main.OBJ
.....\........\PDIUSBD12
.....\........\PDIUSBD12.M51
.....\........\PDIUSBD12.Opt
.....\........\PDIUSBD12.plg
.....\........\PDIUSBD12_Opt.Bak
.....\........\PDIUSBD12_Uv2.Bak
.....\........\Protozlg.c
.....\........\Protozlg.h
.....\........\Protozlg.LST
.....\........\Protozlg.OBJ
.....\........\STARTUP.A51
.....\........\STARTUP.LST
.....\........\STARTUP.OBJ
.....\........\usbdemo
.....\........\usbdemo!.xeh
.....\........\usbdemo.hex
.....\........\usbdemo.lnp
.....\........\usbdemo.M51
.....\........\usbdemo.Opt
.....\........\usbdemo.plg
.....\........\usbdemo.Uv2
.....\........\usbdemo_Opt.Bak
.....\........\usbdemo_Uv2.Bak

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