最近用到测量光线的模块BH1750FVI时需要用到IIC总线操作, 用51的IO口, 模拟出了总线时序, 并能正确操纵需要用IIC总线访问地一系列模块. 给出一个范例程序, 它能在我的51单片机机系统上工作得很好. -Recently used to measure light module BH1750FVI when needed IIC bus operation, with 51 IO ports, analog out of the bus timing, and can correctly operate IIC bus need access to a series of modules. Gives an example program that can In my 51 single local system works very well.