Abstract: Aiming at the defects of the A/D conversion function module inside the ARM processor chip and the current situation that ARM series development board manufacturers rarely provide drivers for the A/D conversion function module based on various RTOS, this paper takes the S3C2410 processor and WinCE operating system as an example, and combines with typical A/D conversion chips to introduce in detail an A/D expansion method to realize the data acquisition function, and illustrates the feasibility of this method from the perspective of hardware circuit, software design and experimental results. This method can effectively solve the difficulties faced by novice users of embedded systems and further broaden the application scope of embedded technology in various types of control.
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