用单片机控制两片SD600，实现单灯由暗到亮，再由亮到暗，一直循环。采用C写的仅仅为测试程序，比较适合初学者，可以参考-With the SCM control two SD600, single-light from dark to light, and then from light to dark, has been circulating. Written using C only for the test procedure