RS-232 通信程序设计

来源：互联网发布：网络综合布线报价单编辑：程序博客网时间：2024/05/17 20:01
代码改自：https://msdn.microsoft.com/zh-cn/library/system.io.ports.serialport
1. 使用RS-232线连接两台PC（无RS-232线，可以使用两台虚拟机，并设置串行端口）
2. 在两台PC上都创建C#控制台项目，复制运行下面的代码就可以了
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApplication1{    using System;    using System.IO.Ports;    using System.Threading;    public class Program    {        static bool _continue;        static SerialPort _serialPort;        public static void Main()        {            string message;            StringComparer stringComparer = StringComparer.OrdinalIgnoreCase;            Thread readThread = new Thread(Read);            // 创建串口对象            _serialPort = new SerialPort();            // 设置端口对象的属性            _serialPort.PortName = SetPortName(_serialPort.PortName);            _serialPort.BaudRate = SetPortBaudRate(_serialPort.BaudRate);            _serialPort.Parity = SetPortParity(_serialPort.Parity);            _serialPort.DataBits = SetPortDataBits(_serialPort.DataBits);            _serialPort.StopBits = SetPortStopBits(_serialPort.StopBits);            _serialPort.Handshake = SetPortHandshake(_serialPort.Handshake);                        //超时时间            _serialPort.ReadTimeout = 500;            _serialPort.WriteTimeout = 500;            _serialPort.Open();            _continue = true;            readThread.Start();            Console.WriteLine("退出请输入“quit”");            while (_continue)            {                message = Console.ReadLine();                                if (stringComparer.Equals("quit", message))                {                    _continue = false;                }                else                {                    System.DateTime currentTime = new System.DateTime();                    currentTime = System.DateTime.Now;                    string strTime = currentTime.ToString();                    message = "[SENT " + strTime + "] " + message;//发送信息                    Console.WriteLine(message);//在控制台输出发送的信息                    _serialPort.WriteLine(                        String.Format("{0}", message));                }            }            readThread.Join();            _serialPort.Close();        }        public static void Read()        {            while (_continue)            {                try                {                    string message = _serialPort.ReadLine();                    System.DateTime currentTime = new System.DateTime();                    currentTime = System.DateTime.Now;                    string strTime = currentTime.ToString();                    message = "[REVC " + strTime + "] " + message;//接收串口信息                    Console.WriteLine(message);//在控制台输出接收的信息                }                catch (TimeoutException) { }            }        }        //设置端口        public static string SetPortName(string defaultPortName)        {            string portName;            Console.WriteLine("可用端口:");            foreach (string s in SerialPort.GetPortNames())            {                Console.WriteLine("   {0}", s);            }            Console.Write("输出 COM 端口值 (默认: {0}): ", defaultPortName);            portName = Console.ReadLine();            if (portName == "" || !(portName.ToLower()).StartsWith("com"))            {                portName = defaultPortName;            }            return portName;        }        // 设置波特率        public static int SetPortBaudRate(int defaultPortBaudRate)        {            string baudRate;            Console.Write("波特率(默认:{0}): ", defaultPortBaudRate);            baudRate = Console.ReadLine();            if (baudRate == "")            {                baudRate = defaultPortBaudRate.ToString();            }            return int.Parse(baudRate);        }        // 设置端口奇偶值        public static Parity SetPortParity(Parity defaultPortParity)        {            string parity;            Console.WriteLine("可用奇偶值:");            foreach (string s in Enum.GetNames(typeof(Parity)))            {                Console.WriteLine("   {0}", s);            }            Console.Write("可用奇偶值(默认: {0}):", defaultPortParity.ToString(), true);            parity = Console.ReadLine();            if (parity == "")            {                parity = defaultPortParity.ToString();            }            return (Parity)Enum.Parse(typeof(Parity), parity, true);        }        //设置数据位        public static int SetPortDataBits(int defaultPortDataBits)        {            string dataBits;            Console.Write("设置数据位 (默认: {0}): ", defaultPortDataBits);            dataBits = Console.ReadLine();            if (dataBits == "")            {                dataBits = defaultPortDataBits.ToString();            }            return int.Parse(dataBits.ToUpperInvariant());        }        //设置停止位        public static StopBits SetPortStopBits(StopBits defaultPortStopBits)        {            string stopBits;            Console.WriteLine("可用停止位:");            foreach (string s in Enum.GetNames(typeof(StopBits)))            {                Console.WriteLine("   {0}", s);            }            Console.Write("输入停止位 (默认: {0}):", defaultPortStopBits.ToString());            stopBits = Console.ReadLine();            if (stopBits == "")            {                stopBits = defaultPortStopBits.ToString();            }            return (StopBits)Enum.Parse(typeof(StopBits), stopBits, true);        }        public static Handshake SetPortHandshake(Handshake defaultPortHandshake)        {            string handshake;            Console.WriteLine("可用握手协议:");            foreach (string s in Enum.GetNames(typeof(Handshake)))            {                Console.WriteLine("   {0}", s);            }            Console.Write("输入握手协议 (默认: {0}):", defaultPortHandshake.ToString());            handshake = Console.ReadLine();            if (handshake == "")            {                handshake = defaultPortHandshake.ToString();            }            return (Handshake)Enum.Parse(typeof(Handshake), handshake, true);        }    }}
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