hid to rs232 usb_hid to serial procedures, a complete project file, you can run.

HIDtoUART
.........\c8051f3xx.h
.........\F320_HIDtoUART.c
.........\F320_HIDtoUART.LST
.........\F320_HIDtoUART.OBJ
.........\F3xx_HIDtoUART.h
.........\F3xx_USB0_Descriptor.c
.........\F3xx_USB0_Descriptor.h
.........\F3xx_USB0_Descriptor.LST
.........\F3xx_USB0_Descriptor.OBJ
.........\F3xx_USB0_InterruptServiceRoutine.c
.........\F3xx_USB0_InterruptServiceRoutine.h
.........\F3xx_USB0_InterruptServiceRoutine.LST
.........\F3xx_USB0_InterruptServiceRoutine.OBJ
.........\F3xx_USB0_Main.c
.........\F3xx_USB0_Main.LST
.........\F3xx_USB0_Main.OBJ
.........\F3xx_USB0_Register.h
.........\F3xx_USB0_ReportHandler.c
.........\F3xx_USB0_ReportHandler.h
.........\F3xx_USB0_ReportHandler.LST
.........\F3xx_USB0_ReportHandler.OBJ
.........\F3xx_USB0_Standard_Requests.c
.........\F3xx_USB0_Standard_Requests.LST
.........\F3xx_USB0_Standard_Requests.OBJ
.........\HIDtoUART
.........\HIDtoUART.lnp
.........\HIDtoUART.M51
.........\HIDtoUART.Opt
.........\HIDtoUART.plg
.........\HIDtoUART.Uv2
.........\HIDtoUART.wsp
.........\HIDtoUART_Opt.Bak
.........\HIDtoUART_Uv2.Bak
.........\STARTUP.A51
.........\STARTUP.LST
.........\STARTUP.OBJ

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