说明：  智能风阀控制器源码,真正产品化的智能家居系统中的一个终端, 使用485通讯, 源码注解清晰.源码实现485通讯,pwm调制输出0-5v,电流反馈等
(Intelligent valve controller source, the real product of the smart home system a terminal, using 485, source code comments and clear. Source to achieve 485, pwm modulation output 0-5v, current feedback, etc.)