DDK2000 写的虚拟串口驱动源代码,包含上层过滤驱动和测试例子-DDK2000 virtual serial port driver to write the source code, including the upper filter driver and test cases

描述了虚拟串口软件整体框架、虚拟串口设备驱动程序（Ethcomm.sys）和虚拟串口网络服务程序（Service.sys）包括服务程序与虚拟串口驱动程序的接口及服务程序流程框-Describes the overall framework of the software virtual serial port, virtual serial port device driver (Ethcomm.sys) and virtual serial ports Network Service prog

VirtualToVirtual VirtualToPhysicalGps的驱动源码-VirtualToVirtual and VirtualToPhysicalGps driver source code