本代码是基于PXA270开发板的I2C总线驱动程序

基于wince5.0下的，PXA270的I2C驱动源码，可以用在具有I2C的硬件平台，其它CPU也可以借鉴。-Based on wince5.0 under, PXA270 the I2C driver source code can be used with I2C hardware platform also can learn from the other CPU.

基于YF PXA255开发板的eboot代码，增加了使用SD卡下载镜像的功能，下载速度快，25M的镜像仅需30s，可以用于省略网口的小型化开发；同时增加了eboot启动时读取外接I2C接口RTC时间的功能-YF PXA255 development board-based eboot code. The use of SD card to download the image file function is added with fast speed: 25M image only 30s,