使用DDK得到U盘信息,和SN号,插入U盘的时候获得很多有用信息,在应用层使用DDK函数-DDK has been the use of U disk information, and SN number, insert the disk when U get a lot of useful information in the application layer using the DDK function

测试USB功能+USB测试工具，实现串口调试-Testing USB function+ USB testing tools, Serial debugging