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USB source code of Vxworks 5.6. It has device and the host stack.
qualcomm msm6550 device specification 高通的手机芯片文档
is a microcontroller the family intel 8051, this a device is lot powerfull!
Schematics for simple JTAG device plus instructions to jtag IRD 322/522/625
this is the usbtester program to browse the communicatino between host and device
Audio app to store an audio file in internal memory of the device
短消息(SMS)是GSM 中最简洁的数据通信方式。本文利用TC35i 通信模块的SMS功能实现远程前端不间断电源（UPS）与监控中心之间数据和控制指令的双向通信，通过单片机AT89C52 控制G
Use P/Invoke to Develop a .NET Base Class Library for Serial Device Communications