从.net发送和接收到串行设备" like;VT 100

本文关键字:quot VT like net | 更新日期: 2023-09-27 17:53:06

我有一个串行设备,用于接收和回复来自VT100型终端的命令。我可以使用任意数量的"终端模拟器"来操作这个设备。但是我想做的是从。net Windows应用程序发送一系列命令,并接收来自同一应用程序的回复,这样我就可以驱动一个对操作人员来说"非常简单"的GUI。我不想要的是另一个终端模拟器。似乎使用"System.IO.Serial。SerialPort"我可以打开连接,发送消息,分配一个委托来接收消息,实际接收消息……但是我发送的消息(命令)没有被解释为我期望的(当我用终端模拟器检查设备的状态时,状态与通过。net发送的命令不匹配),并且我收到的消息不是我可以破译的格式。

我认为我需要做的是正确编码命令并正确解码响应…但是我找不到任何文档清楚地解释如何做到这一点。

(我在c#中工作,但任何。net示例都会受到赞赏)

我正在工作的代码原型这是:

using System;
using System.IO.Ports;
using System.Text;
namespace busmanager
{
    public class buslink
    {
        SerialPort _serialPort;
        Boolean _echo;
        Delegate _receiver;
        //Defaut Ctor:
        public buslink(Delegate Receiver)
        {
            String[] SerialPorts = System.IO.Ports.SerialPort.GetPortNames();
            if (SerialPort.GetPortNames().Length > 0)
            {
                SetChannel(PortDefinitions.GetDefaults(SerialPort.GetPortNames()[0]), Receiver);
            }
            else
            {
                throw new Exception("Unable to connect to serial port");
            }
        }
        //Custom Ctor: for externally defined PortDefinitions
        public buslink(PortDefinitions PortDefinitions, Delegate Receiver)
        {
            SetChannel(PortDefinitions, Receiver);
        }
        private void SetChannel(PortDefinitions PortDefinitions, Delegate Receiver)
        {
            _serialPort = new SerialPort()
            {
                PortName = PortDefinitions.PortName,
                //BaudRate = PortDefinitions.BaudRate,
                Parity = PortDefinitions.Parity,
                StopBits = PortDefinitions.StopBits,
                DataBits = PortDefinitions.DataBits,
                Handshake = PortDefinitions.Handshake,
                ReadTimeout = PortDefinitions.ReadTimeout,
                WriteTimeout = PortDefinitions.WriteTimeout,
                NewLine = "'n",
                Encoding = System.Text.Encoding.ASCII,
                DtrEnable = true,

            };
            _echo = PortDefinitions.Echo;
            _serialPort.DataReceived += new SerialDataReceivedEventHandler(_serialPort_DataReceived);
            _serialPort.Open();
            _receiver = Receiver;
        }
        void _serialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            byte[] c = new byte[1000];
           int x = _serialPort.Read(c,0,1000);
            string d = c.ToString();
            _receiver.DynamicInvoke(_serialPort.ReadExisting());
        }
        public string Send(string Cmd)
        {
            Cmd = Cmd.ToUpper();
            byte[] sendBytes = Encoding.ASCII.GetBytes(Cmd);
            try
            {
                if (ValidateCmd(Cmd))
                {
                    _serialPort.WriteLine(Cmd);
                    if (_echo)
                    {
                        return "ECHO: " + Cmd;
                    }
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
            return string.Empty;
        }
        private bool ValidateCmd(string Cmd)
        {
            return true;
        }

        public void Dispose()
        {
            _serialPort.Close();
            _serialPort.Dispose();
        }
    }
    public struct PortDefinitions
    {
        public string PortName { get; set; }
        public int BaudRate { get; set; }
        public Parity Parity { get; set; }
        public StopBits StopBits { get; set; }
        public int DataBits { get; set; }
        public Handshake Handshake { get; set; }
        public int ReadTimeout { get; set; }
        public int WriteTimeout { get; set; }
        public bool Echo { get; set; }
        public static PortDefinitions GetDefaults(string PortName)
        {
            return new PortDefinitions()
                                        {
                                            PortName = PortName.ToUpper(),
                                            BaudRate = 9600,
                                            Parity = Parity.None,
                                            StopBits = StopBits.One,
                                            DataBits = 8,
                                            Handshake = Handshake.None,
                                            ReadTimeout = 1000,
                                            WriteTimeout = 1000,
                                            Echo = true
                                        };
        }

    }

}

该设备是专有的,但它接受的命令是:InX OutY(其中X和Y是设备上的端口,并创建连接In和Out端口之间)Status All(显示所有状态输入

从.net发送和接收到串行设备" like;VT 100

您的换行定义设置错误。你有NewLine = "/N",但你几乎肯定需要它是"'r'n""'n"