usb资料2
https://zhidao.baidu.com/question/548651197.html
http://blog.csdn.net/zqixiao_09/article/details/51056903
http://blog.csdn.net/kevinx_xu/article/details/23513117
linux 设备管理机制
https://wenku.baidu.com/view/6854e76383d049649a66582e.html
https://zhidao.baidu.com/question/548651197.html
http://blog.csdn.net/zqixiao_09/article/details/51056903
http://blog.csdn.net/kevinx_xu/article/details/23513117
linux 设备管理机制
https://wenku.baidu.com/view/6854e76383d049649a66582e.html