Android USB 通讯相关的

0：官方的介绍：

https://developer.android.com/guide/topics/connectivity/usb/host.html

或者参考：http://blog.youkuaiyun.com/rodulf/article/details/52449713

1：非常好的详细的介绍：

http://blog.youkuaiyun.com/tianruxishui/article/details/38338087

2：USB驱动相关的，例如UsbConstant的解析

http://wenku.baidu.com/link?url=tm6fmX3ayK_yk5EoWjZ5KQZwjC8A_ICP87kSovCemyFyFzMk3L-EjZh8Ai2LFPW2fgSK2B8X7ofrOMVZBDKsfaomHbaoFiMYKDBP62Tciie

http://www.cnblogs.com/sowhat4999/p/4439873.html

http://wenku.baidu.com/link?url=uz3k1AG_krK_GcjDVxU3eYtKh9W1EVYLyQAoREiK-GickkPcDj0yfM4jmExR5-_lqvZT4juht6ZY7HJOr2P6zbqtlXUL5r7ETAGcRX55C4u