摘要
采用VireoSoftware公司出品的VxD开发软件包VtoolsD ,开发出了Windows98环境下的数据采集卡虚拟设备驱动程序。VxD部分完成对物理设备的直接控制和通讯 ,DLL部分完成设备驱动 (Ring0 )与应用程序 (Ring3)之间的接口 ,MicrosoftVisualC ++开发的应用程序通过调用Windows系统函数 ,实现对采样的精确定时 ,其周期最小可达 0 1ms。
With the software kit VtoolsD of the Vireo Software Inc. to develop VxD, a virtual device driver for PS2116 data-collection card is developed. The VxD is used to take charge of control and communication of the physical device, the DLL is the interface programme between the virtual device driver and the application. With the function provided by Windows Operation system, the minimum cycle of time is able to reach 0 1ms.
出处
《计算机测量与控制》
CSCD
2003年第2期118-121,共4页
Computer Measurement &Control
