说明：  本文介绍MATLAB环境下上位机与下位机通过RS232接口进行串行通信的实现方法 详细叙述了在MATLAB环境下使用其自带的控制工具箱中的串口事件回调函数,实时接收下位机输出串行信号的实现过程.
(This article describes the MATLAB environment, host computer and the next-bit computer through RS232 serial communication interface implementation methods described in detail in the MATLAB environment, using its own control in the toolbox serial event callback function, real-time to receive the next bit machine output string line signals the implementation process.)