利用旋转开关控制8个LED循环点亮方向，包括旋转开关（消抖，辨别方向）和 LED循环点亮模块。使用emacs+iverilog开发，内附gtkwave仿真截屏。-The use of rotary switch control 8 LED cycle light directions, including the rotary switch (Consumer shake, a sense of direction) and the L