该源码是QT2440开发板的USB驱动的程序代码，可以帮助使用者编写USB的驱动程序，代码很全的。-The source is a development board' s USB driver QT2440 program code that can help users to write USB driver code is full of.

改源码为一个QT2440开发板的VIVI文件，下载可以直接使用-To change source code for a QT2440 development board VIVI file download can be used directly