我写的一个串口通讯的程序,该程序可以将收到的命令和文本重的程序进行比较,再将数据发回,适合通讯设备和电脑的通讯-I write a serial communication program, which can be ordered and received the text of heavy procedures, further data back, suitable for communications equipment and computer communications

RS232串口通信程序，实现功能：电脑先发个数据给单片机，单片机收到后将此数据回复给电脑-RS232 serial communication procedures, and functions: computer before sending the data to the microcontroller, the microcontroller received after this data back to the computer

DM430-L型开发板RS485通信实验，通过开发板与电脑进行数据通信，485接在UART1上 电脑端必备RS232转RS485模块，否则无法进行直接的连接RS485之间通过双绞线连接，如果距离近，可以不使用120欧电阻匹配电脑端通过串口调试助手操作，先将数据由电脑发往开发板开发板板会将收到的数据再发送到串口调试助手，接收采用中断模块，发送用查询板载的BSL模块可以通过跳线帽设置为USB转串口模式，笔记本电脑没有串口可以直接代替开发板的BSL区的RXD和TXD0连接，TXD和RXD0连接即可

实现终端发数据，协调器收到后通过串口发给电脑(The terminal sends the data and the coordinator sends it to the computer through the serial port)