【摘要】 SPI接口技术是一种高速,高效的串行接口技术,因而SPI设备在数据通信中应用十分方便。设备驱动程序作为操作系统内核和硬件之间的接口,是嵌入式开发的重要组成部分,针对微处理器AT91RM9200和嵌入式Linux操作系统构建的开发平台,分析了AT91RM9200与TLC2543硬件结构,并根据接口电路的连接特点说明了SPI设备驱动程序的基本开发方法和动态模块加载实现过程。更多还原

【Abstract】 The Serial peripheral Interface is a sort of technology with high speed and efficiency, which makes the SPI device convenient in data communication. As the interface between kernel of operation system and hardware, the device driver is very important in embedded development. Aiming at the developing platform built on AT91RM9200 and embedded system Linux, the paper analyzes the hardware structure of AT91RM9200 and TLC2543, explains the basic programming method of SPI driver and the realization of dynamic module loading, according to the character of connecting circuit.更多还原