串口AD嵌入式Linux驱动实现

Implementation of the serial port AD driver in embedded Linux

介绍了串行外设接口(SPI)在高速串行模数转换器TLC2543与ARM微处理器S3C2440的接口中的应用方案,针对ARM微处理器S3C2440和嵌入式Linux操作系统构建的开发平台,给出了S3C2440和TLC2543的详细硬件连接图和Linux下嵌入式驱动的实现方法及动态模块加载过程。方法同样适用于其他具有SPI接口的串行A/D转换器和微处理之间的接口与编程。TLC2543和S3C2440基于SPI的串行通信为高速数据采集的嵌入式设备提供了一种解决方案。

This paper presented the application of SPI to the interface between the high-speed serial Aft） converter （TLC2543） and the ARM microprocessor （S3C2440）, aiming at developing a platform based on S3C2440 and embedded system LimLx. It described the connection of the TLC2543 and theS3C2440 as weU as its driver and the realization of dynamic module loading. The connection method is also applicable to other serial A/D converter and microprocessor that have SPI functions. The serial communication between TLC2543 and S3C2440 by SPI also provides a solution for the high-speed data acquisition of embedded devices.