小巧实用的pca9555驱动程序 多平台只需要做相应的转换就可以使用-Compact and practical pca9555 drivers only need to do multi-platform conversion, you can use the corresponding

pca9555 在A8架构下驱动,有一定的参考价值-pca9555 the A8 architecture-driven, there is some reference value

I2C总线下IO扩展芯片PCA9555，用于s3c6410下扩展IO接口，此文件为驱动文件！-Under IO expansion of chip I2C bus PCA9555, for s3c6410 next expansion IO interface, this file is driven file!