[ 导读] 本文通过阅读内核代码，来梳理一下I2C子系统的整体视图。在开发I2C设备驱动程序时，往往缺乏对于系统整体的认识，没有一个清晰的思路。所以从高层级来分析一下I2C系统的设计思路，将有助于设计调试具体的驱动程序。 非常抱歉，有两张图放错了 ...

I2C协议是在开发中使用非常频繁的一种协议，相信大家在学习单片机的时候经常会用到支持I2C协议的模块，I2C 总线仅仅使用 SCL、SDA 这两根信号线就实现了设备之间的数据交互，极大地简化了对硬件资源和 PCB 板布线空间的占用。因此，I2C 总线被非常广泛地应用 ...

In the June and August 2003 issues of Linux Journal, my column covered the Linux kernel driver model, and the I2C subsystem was used as an example. This month, we discuss what the I2C subsystem does ...

In the last Driving Me Nuts column [see LJ, June 2003], we introduced the kernel driver model framework with an explanation of how the generic bus and driver and device code works. The i2c core was ...