对于用户来说，USB设备一旦枚举成功，endpoint与pipe已经绑定。用户可以通过PYUSB来查看endpoint的信息，同时获取对应的pipe号，因为endpoint号与PIPE号是一一对应的！注意R_USB_PipeWrite（）调用的时候一定要指明长度BUF_SIZE，对应的host要read的长度要确定，不然会出错！

CNET editor Dong Ngo has been involved with technology since 2000, starting with testing gadgets and writing code for CNET Labs' benchmarks. He now manages CNET San Francisco Labs, reviews 3D ...