ARM-Linux下设计I/O驱动程序的关键点分析  

The Analyse of the Key of Designing the I/O Driver on ARM-Linux

作　　者：张沛[1] 戴胜华[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京市100044

出　　处：《仪器仪表标准化与计量》2007年第6期41-42,共2页Instrument Standardization & Metrology

摘　　要：I/O是CPU与外设之间交互的主要通道,典型驱动程序的最主要的任务就是读写I/O端口和I/O内存(通称为I/O区域)。本文将阐述在ARM-Linux系统中编写驱动程序来使用I/O区域的关键两点——地址映射和I/O端口的注册。并介绍内核提供的读写I/O端口的各种函数。I/O is the main interaction passage between the CPU and outside equipment. The most important task of the representative driver is to reading and writing the I/O port and the I/O memory （generally called I/O area）. The paper expatiated the two important key that how to program the driver to use the I/O area, the mapped address and the registered I/O port. The paper also introduced diversified function of reading and writing I/O port which provided by the kernel.

关 键 词：ARM-Linu× I/O 驱动程序 

分 类 号：TP311.11[自动化与计算机技术—计算机软件与理论]