After analyzing the work mechanism and the common structure of hardware device driver in Linux,this paper describes the design and implementation of the driver for a data acquisition card complying with PC/104Plus standard in Linux environment.An approach to access the device cache based on timing inquires was proposed in this paper. It not only improves the interactive speed with the device but also avoid high CPU utility.
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梁晓. 嵌入式Linux和PC/104Plus环境下数采卡驱动设计[J]. 科学技术与工程, 2011, (23): . liangxiao. Driver Design of Data Acquisition Card in Embedded Linux and PC/104Plus Environment[J]. Science Technology and Engineering,2011,(23).