让彩灯从左到右或从右到左依次点亮。程序开始时，给某一个变量赋初始值0x01，并从端口输出变量的反码，等待一段时间后，让变量的值乘以2，再次输出反码并延时，直到所有数据输出完毕，再次重复整个过程。-Let lanterns from left to right or right to left turn light. Program began, a variable assigned to the initial value of a 0x01, and the output variables from the anti-code the port, waiting for some time, so that the value of the variable multiplied by 2, once again against the code and output delay until all the data output is completed, to repeat the whole process.