摘要
设备驱动程序是将系统外围设备和应用软件连接起来的中间环节。在嵌入式应用系统中采用SPI总线芯片越来越多,ARM芯片的标准SPI接口不够用。本文采用通用I/O引脚,在ARM9平台上linux系统中实现了SPI总线设备驱动,经实验验证最高通讯速率可达5Mdps。
Device driver is the intermediate links between system peripherals devices and application software., More and more SPI bus chip used in embedded applications.And the standard SPI interface on ARM chip is not enough. In this paper, the general-purpose I/O pins on the ARM9 platform will achieve the SPI bus device driver in linux system.And it was proved by experiment that meeting the design requirements.
出处
《微计算机信息》
2011年第4期85-87,共3页
Control & Automation
基金
基金申请人:赵文博
基金颁发部门:上海市教育委员会
项目名称:基于嵌入式微处理器的智能婴儿摇篮(JWCXSL1002)
