keil编译器，lpc2468的usb host stack，目前仅支持massstorage。结构很不错，方便扩展。对于希望学习usb host的同志有所帮助。-keil compiler, lpc2468 of usb host stack, currently only support massstorage. Very good structure to facilitate the expansion. Who want to learn usb host comrades help.