用51单片机和sl811 usb host芯片实现u盘的读写项目，开发环境keil文件列表: usbhost .......\51+sl811读写U盘的源程序＋原理图 .......\...............................\51+sl811读写U盘的源程序＋原理图.rar .......\...............................\AT89X52.H .......\...............................\COMMON.H .......\...............................\Control.Sch .......\...............................\Fat.c .......\...............................\Fat.h .......\...............................\HAL.C .......\...............................\HAL.H .......\...............................\HPI.C .......\...............................\HPI.H .......\...............................\ISR.C .......\...............................\MAIN.C .......\...............................\RBCCMD.H .......\...............................\SL811.C .......\...............................\SL811.H .......\...............................\TPBULK.C .......\...............................\TPBULK.H .......\...............................\USBHOST.Opt .......\...............................\USBHOST.Uv2 .......\...............................\USBHOST_Opt.Bak .......\...............................\USBHOST_Uv2.Bak……