VxWorks下数据采集卡驱动程序开发

Driver Development of Data Acquisition Card under VxWorks

数据采集卡是典型的字符设备,以其为例,分析了VxWorks下字符设备驱动程序的结构,说明了字符设备驱动的开发思路,列出了开发的具体步骤,为驱动开发人员提供了参考。而用户在使用该设备驱动时,无需了解底层实现,即设备寄存器的操作,只需熟悉VxWorks下标准的I/O函数即可实现对数据采集卡的操作,极大地方便了应用程序开发。

The data acquisition card is a typical character equipment. Taking it as the example, the paper analyzes the structure of the character device drives under VxWorks, explains the development ideas of the character device drivers,lists the concrete step of development and provides a reference to driver developers. At the same time, users don＇t need to know how to opcrate the device register, but only pay attention to the standard I/O function, which is convenient to develop program.