摘要
基于PCI Express总线的光纤采集卡是自行研发的数据采集与存储卡;为实现数据在板卡存储区与主机内存之间的DMA传输通信,使用DriverStudio工具开发了该板卡的WDM设备驱动程序;重点介绍了主机控制板卡进行DMA操作的机制,以及驱动程序与应用程序和板卡之间的数据传输的实现方法;实际应用结果表明,使用该驱动程序的DMA传输机制,能够达到90MB/s以上的存储速率。
Fabric acquisition card based on PCI Express Bus is a self--designed card for data acquisition and storage. In order to realize the DMA communication between the card＇s storage area and the host memory, the DriverStudio tools are used to develop the WDM Driver Program for the card. In this paper, mechanism of the host control the card＇s DMA operation and method of the Driver Program transmit data with the Application Program are introduced in emphasis. The results of application indicated that, the storage velocity can be above 90 MB/s if use this Driver Program.
出处
《计算机测量与控制》
北大核心
2013年第1期272-275,共4页
Computer Measurement &Control
