C#编写一个控制台程序的实现串口通信示例

using System;
using System.IO.Ports;
using System.Text;
using System.Threading;

namespace SerialPortTerminal
{
    class Program
    {
        private static SerialPort _serialPort;
        private static bool _continue = true;

        static void Main(string[] args)
        {
            Console.Title = "串口通信终端";
            Console.OutputEncoding = Encoding.UTF8;
            Console.InputEncoding = Encoding.UTF8;

            try
            {
                // 列出可用串口
                Console.WriteLine("可用的串口列表:");
                string[] ports = SerialPort.GetPortNames();

                if (ports.Length == 0)
                {
                    Console.WriteLine("未找到可用串口。按任意键退出...");
                    Console.ReadKey();
                    return;
                }

                for (int i = 0; i < ports.Length; i++)
                {
                    Console.WriteLine($"{i + 1}. {ports[i]}");
                }

                // 选择串口
                int selectedIndex = -1;
                while (selectedIndex < 0 || selectedIndex >= ports.Length)
                {
                    Console.Write($"\n请选择串口 (1-{ports.Length}): ");
                    if (int.TryParse(Console.ReadLine(), out int input) && input > 0 && input <= ports.Length)
                    {
                        selectedIndex = input - 1;
                    }
                    else
                    {
                        Console.WriteLine("无效的选择，请重新输入。");
                    }
                }

                string selectedPort = ports[selectedIndex];
                Console.WriteLine($"已选择: {selectedPort}");

                // 创建并配置串口
                _serialPort = new SerialPort(selectedPort)
                {
                    BaudRate = 9600,
                    Parity = Parity.None,
                    DataBits = 8,
                    StopBits = StopBits.One,
                    Handshake = Handshake.None,
                    ReadTimeout = 500,
                    WriteTimeout = 500,
                    Encoding = Encoding.UTF8
                };

                // 设置数据接收事件处理
                _serialPort.DataReceived += SerialPortDataReceived;

                // 打开串口
                _serialPort.Open();
                Console.WriteLine("串口已打开，配置: 9600,8,N,1");
                Console.WriteLine("输入要发送的文本 (输入 'exit' 退出):");
                Console.WriteLine("---------------------------------");

                // 启动发送线程
                Thread writeThread = new Thread(Write);
                writeThread.IsBackground = true;
                writeThread.Start();

                // 等待退出
                while (_continue)
                {
                    Thread.Sleep(100);
                }

                // 关闭串口
                if (_serialPort.IsOpen)
                {
                    _serialPort.Close();
                }
                Console.WriteLine("串口已关闭。");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"错误: {ex.Message}");
                Console.WriteLine("按任意键退出...");
                Console.ReadKey();
            }
        }

        private static void SerialPortDataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            try
            {
                SerialPort sp = (SerialPort)sender;
                string data = sp.ReadExisting();
                if (!string.IsNullOrEmpty(data))
                {
                    Console.Write($"[接收] {data}");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"接收错误: {ex.Message}");
            }
        }

        private static void Write()
        {
            while (_continue)
            {
                try
                {
                    string message = Console.ReadLine();

                    if (message?.ToLower() == "exit")
                    {
                        _continue = false;
                        return;
                    }

                    if (_serialPort != null && _serialPort.IsOpen)
                    {
                        _serialPort.WriteLine(message);
                        Console.WriteLine($"[发送] {message}");
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine($"发送错误: {ex.Message}");
                }
            }
        }
    }
}