嵌入式Linux中I^2C设备驱动程序的研究与实现  

Research and implementation of I^2C device driver under embedded Linux system

作　　者：朱南皓[1] 李正祥[1] 

机构地区：[1]中国传媒大学广播电视数字化教育部工程研究中心,北京100024

出　　处：《微计算机信息》2010年第11期67-69,共3页Control & Automation

摘　　要：I2C作为一种目前通用的总线技术,已广泛应用于EEPROM、实时钟、小型LCD等设备与CPU的接口中。分析了嵌入式Linux中I2C驱动程序的体系结构,I2C驱动程序中一些重要数据结构之间的关系以及I2C驱动程序的运行机制。最后,结合具体的EEPROM芯片AT24C08说明了在嵌入式Linux下开发I2C设备驱动程序的一般流程。另外还创新了一般的驱动方法,实现了单设备多驱动的驱动模式。Being an universal bus technology at present time, I^2C is widely used in the interface between CPU and other devices such as EEPROM, RTC and small LCD. The architecture of I^2C driver is analyzed, as well as the relationship of some important data structure and the operation mechanism of the I^2C driver. Finally, by taking an EEPROM chip named AT24C08 as a specific example, the flow of how to develop an I^2C device driver is illustrated. In addition, the design of a new driver mode of single device with multi-drivers is completed.

关 键 词：I^2C驱动程序 I^2C体系结构 运行机制 I^2C设备驱动 AT24C08 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]