如何用C#监听多个串口

Question

我正在使用C# 中的串行 COM > 作者：Noah Coad，我的机器上有可用端口 COM1、COM2、COM6、COM7、COM8、COM9、COM10、COM11、COM12、COM13，我使用 COM6、COM7、COM8、COM9、COM10、COM11， COM12 与 ZyXEL Omni 56K 调制解调器。我将这七个端口与七个调制解调器一起使用。

有些客户希望通过这些调制解调器获得答案。我使用 mscomm.ocx 来监听 COM 端口。我的应用程序运行成功，但有时一个调制解调器正在处理 50-100 个请求并应答，然后它会停止工作，并且我的客户端会超时，因为它们没有从服务器获得应答（使用 COM 端口调制解调器）。首先它得到“RING”，然后得到“CONNECT 1200/V.22b 2400/NONE”，然后得到我的客户端的原始包，我处理这个包并向客户端生成一个答案。

我使用七个 EXE 文件来打开和监听 COM 端口，因为当我使用 我不同时处理一个 EXE 文件。我知道我必须使用线程，但我不知道如何使用。

如何同时监听七个 COM 端口并毫无问题地完成工作？我始终希望我的应用程序能够正常工作并同时回复所有客户。这是我的代码：

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Text;
using System.IO;
using System.Diagnostics;
using System.Threading;

namespace Serial_Demo
{
    /// <summary>
    /// Summary description for Form1.
    /// </summary>
    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Label label8;

        private Sistem sistemim = new Sistem();
        private ParcaKontorRaporu parcaKontorRaporu = new ParcaKontorRaporu();
        private ParcaKontorYukleme parcaKontorYukleme = new ParcaKontorYukleme();
        private FaturaOdeme faturaOdeme = new FaturaOdeme();
        private FaturaRaporu faturaRaporu = new FaturaRaporu();
        private FaturaSorgulama faturaSorgulama = new FaturaSorgulama();
        private NumaraSorgulama numaraSorgulama = new NumaraSorgulama();
        private TamKontorRaporu tamKontorRaporu = new TamKontorRaporu();
        private TamKontorYkleme tamKontorYukleme = new TamKontorYkleme();
        private BakiyeSorgulama bakiyeSorgulama = new BakiyeSorgulama();
        private HavaleBildirimi havale = new HavaleBildirimi();
        private KartKontorSifresi kartSifresi = new KartKontorSifresi();
        private KartKontorRaporu kartRapor = new KartKontorRaporu();
        private FiyatListesi fiyatListesi = new FiyatListesi();
        private AylikKontorRaporu aylikKontorRapor = new AylikKontorRaporu();
        private AylikFaturaRaporu aylikFaturaRapor = new AylikFaturaRaporu();
        private SifreDegirtirme sifreDegistir = new SifreDegirtirme();
        private BankaExtra BankExtra = new BankaExtra();
        private Duyurular duyuru = new Duyurular();
        private DuyurularExtra duyuruExtra = new DuyurularExtra();
        private BankaListesi Bankalar = new BankaListesi();
        private KontorFiyatSorgula KontorFiyat = new KontorFiyatSorgula();

        string bugun = DateTime.Now.ToShortDateString();
        private AxMSCommLib.AxMSComm com;
        private Button btn_disconnect;
        private Label label1;
        private Panel panel1;
        string GidenToPos = null;
        private int count = 0;
        private IContainer components;
        private System.Windows.Forms.Timer timer1;
        private ListBox listBox1;
        private Label sayiLbl;
        private Label label2;
        Char chr = (char)13;

        public Form1()
        {
            InitializeComponent();

            InitComPort();
        }

        private void InitComPort()
        {
            // Set the com port to be 1
            com.CommPort = 6;

            // This port is already open, then close.
            if (com.PortOpen)
                com.PortOpen = false;

            // Trigger the OnComm event whenever data is received
            com.RThreshold = 1;

            // Set the port to 9600 baud, no parity bit, 8 data bits, 1 stop bit (all standard)
            com.Settings = "1200,n,8,1";

            // Force the DTR line high, used sometimes to hang up modems
            //com.DTREnable = true;

            com.RTSEnable = true;

            com.DTREnable = true;

            // No handshaking is used
            com.Handshaking = MSCommLib.HandshakeConstants.comNone;

            // Use this line instead for byte array input, best for most communications
            com.InputMode = MSCommLib.InputModeConstants.comInputModeText;

            // Read the entire waiting data when com.Input is used
            com.InputLen = 0;

            // Don't discard nulls, 0x00 is a useful byte
            com.NullDiscard = false;

            // Attach the event handler
            com.OnComm += new System.EventHandler(this.OnComm);

            com.PortOpen = true;

            com.Output = "AT&F S0=1" + chr;
            com.Output = "ATM0" + chr;
            com.Output = "ATS7=90 +++ATH0" + chr;
        }

        private void OnComm(object sender, EventArgs e)  //  MSCommLib OnComm Event Handler
        {
           Thread.Sleep(400);

            if (com.InBufferCount > 0)
            {
                string response = (string)com.Input;

                ProcessResponseText(response);
            }
            com.PortOpen = true;
        }

        private void ProcessResponseText(string input)
        {
            string IslemSaati = DateTime.Now.ToShortTimeString();

            if (input.Trim().Equals("RING"))
            {
                listBox1.Items.Add(IslemSaati + " - ringing...");
            }
            else
                if (input.Trim().Equals("CONNECT 1200/V.22b 2400/NONE"))
                {
                    listBox1.Items.Add(IslemSaati + " - connecting...");

                }
                else
                {
                    char[] c = input.Trim().ToCharArray();
                    if (c[0].ToString() == "\x02")
                    {
                        count++;
                        sayiLbl.Text = "number of process : " + Convert.ToString(count);

                        string gidecekStr = null;
                        gidecekStr = GeleniTemizle(input);
                        GidenToPos = null;

                        char[] k = gidecekStr.ToCharArray();

                        if (k[0].ToString() == "X")
                        {
                            for (int i = 1; i < k.Length; i++)
                            {
                                GidenToPos += k[i];
                            }
                        }
                        else
                        {
                            GidenToPos = paketFiltre(gidecekStr);
                        }

                        listBox1.Items.Add(IslemSaati + " - Coming Package : " + input);

                        com.Output = GidenToPos;

                        listBox1.Items.Add(IslemSaati + " - Going Package : " + GidenToPos);
                    }
                    else
                    {
                        sayiLbl.Text = "number of process : " + Convert.ToString(count);
                    }
                }
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {

            }
            base.Dispose(disposing);
        }

        public string paketFiltre(string gelen)
        {
            char[] c = gelen.ToCharArray();
            string gidecekStr = null;
            int secim = 0;

            if (c[18].ToString() == "1")
            {
                secim = 1;
            }
            if (c[18].ToString() == "2")
            {
                secim = 2;
            }
            if (c[18].ToString() == "3")
            {
                secim = 3;
            }
            if (c[18].ToString() == "4")
            {
                secim = 4;
            }
            if (c[18].ToString() == "5")
            {
                secim = 5;
            }
            if (c[18].ToString() == "6")
            {
                secim = 6;
            }
            if (c[18].ToString() == "7")
            {
                secim = 7;
            }
            if (c[18].ToString() == "8")
            {
                secim = 8;
            }
            if (c[18].ToString() == "9")
            {
                secim = 9;
            }
            if (c[18].ToString() == "A")
            {
                secim = 10;
            }
            if (c[18].ToString() == "B")
            {
                secim = 11;
            }
            if (c[18].ToString() == "C")
            {
                secim = 12;
            }
            if (c[18].ToString() == "D")
            {
                secim = 13;
            }
            if (c[18].ToString() == "E")
            {
                secim = 14;
            }
            if (c[18].ToString() == "F")
            {
                secim = 15;
            }
            if (c[18].ToString() == "G")
            {
                secim = 16;
            }
            if (c[18].ToString() == "H")
            {
                secim = 17;
            }
            if (c[18].ToString() == "I")
            {
                secim = 18;
            }
            if (c[18].ToString() == "J")
            {
                secim = 19;
            }
            if (c[18].ToString() == "K")
            {
                secim = 20;
            }
            if (c[18].ToString() == "L")
            {
                secim = 21;
            }

            switch (secim)
            {
                case 1:  // Bakiye Sorgulama
                    gidecekStr = bakiyeSorgulama.BakiyeSorgula(gelen);
                    break;

                case 2:  // Para Kontr Talimati Gnderme
                    gidecekStr = parcaKontorYukleme.ParcaKontorYukle(gelen);
                    break;

                case 3: // Para Kontr Raporu
                    gidecekStr = parcaKontorRaporu.Rapor(gelen);
                    break;

                case 4: // Tam Kontr Talimati Gnderme
                    gidecekStr = tamKontorYukleme.KontorYukle(gelen);
                    break;

                case 5: // Tam Kontr Raporu
                    gidecekStr = tamKontorRaporu.Rapor(gelen);
                    break;

                case 6: // Numara Sorgulama
                    gidecekStr = numaraSorgulama.Sorgula(gelen);
                    break;

                case 7: // Fatura Sorgulama
                    gidecekStr = faturaSorgulama.Sorgulama(gelen);
                    break;

                case 8: // Fatura deme
                    gidecekStr = faturaOdeme.FaturaOde(gelen);
                    break;

                case 9: // Fatura Raporu
                    gidecekStr = faturaRaporu.Rapor(gelen);
                    break;

                case 10: // HAVALE/EFT BILDIRIMI
                    gidecekStr = havale.HavaleEftBildirimi(gelen);
                    break;

                case 11: // KART KONTR SIFRESI ALMA
                    gidecekStr = kartSifresi.KartKontorSifresiAlma(gelen);
                    break;

                case 12: // KART KONTR RAPORU
                    gidecekStr = kartRapor.Rapor(gelen);
                    break;

                case 13: // FIYAT LISTESI
                    gidecekStr = fiyatListesi.Liste(gelen);
                    break;

                case 14: // GNLK/HAFTALIK/AYLIK KONTR RAPORU ALMA
                    gidecekStr = aylikKontorRapor.Rapor(gelen);
                    break;

                case 15: // GNLK/HAFTALIK/AYLIK FATURA RAPORU ALMA
                    gidecekStr = aylikFaturaRapor.Rapor(gelen);
                    break;

                case 16: // SIFRE DEGISTIRME
                    gidecekStr = sifreDegistir.SifreDegistir(gelen);
                    break;

                case 17: // BANKA LISTESI
                    gidecekStr = Bankalar.Liste(gelen);
                    break;

                case 18: // BANKA EXTRA
                    gidecekStr = BankExtra.Liste(gelen);
                    break;

                case 19: // DUYURULAR
                    gidecekStr = duyuru.Liste(gelen);
                    break;

                case 20: // DUYURULAR EXTRA
                    gidecekStr = duyuruExtra.Liste(gelen);
                    break;

                case 21: // KONTR FIYAT SORGULA
                    gidecekStr = KontorFiyat.Sorgula(gelen);
                    break;
            }
            return gidecekStr;
        }

        public string ConvertToHex(string asciiString)
        {
            string hex = "";
            foreach (char c in asciiString)
            {
                int tmp = c;
                hex += String.Format("{0:x2}", (uint)System.Convert.ToUInt32(tmp.ToString()));
            }
            return hex;
        }

        private string HexAsciiConvert(string hex)
        {

            StringBuilder sb = new StringBuilder();

            for (int i = 0; i <= hex.Length - 2; i += 2)
            {

                sb.Append(Convert.ToString(Convert.ToChar(Int32.Parse(hex.Substring(i, 2),

                System.Globalization.NumberStyles.HexNumber))));

            }

            return sb.ToString();

        }
        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
            this.label8 = new System.Windows.Forms.Label();
            this.com = new AxMSCommLib.AxMSComm();
            this.btn_disconnect = new System.Windows.Forms.Button();
            this.label1 = new System.Windows.Forms.Label();
            this.panel1 = new System.Windows.Forms.Panel();
            this.label2 = new System.Windows.Forms.Label();
            this.sayiLbl = new System.Windows.Forms.Label();
            this.timer1 = new System.Windows.Forms.Timer(this.components);
            this.listBox1 = new System.Windows.Forms.ListBox();
            ((System.ComponentModel.ISupportInitialize)(this.com)).BeginInit();
            this.panel1.SuspendLayout();
            this.SuspendLayout();
            //
            // label8
            //
            this.label8.BackColor = System.Drawing.Color.Transparent;
            this.label8.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.label8.ForeColor = System.Drawing.SystemColors.Highlight;
            this.label8.Location = new System.Drawing.Point(0, 109);
            this.label8.Name = "label8";
            this.label8.Size = new System.Drawing.Size(160, 24);
            this.label8.TabIndex = 22;
            this.label8.Text = "Gelen/Giden Paketler :";
            //
            // com
            //
            this.com.Enabled = true;
            this.com.Location = new System.Drawing.Point(491, 109);
            this.com.Name = "com";
            this.com.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("com.OcxState")));
            this.com.Size = new System.Drawing.Size(38, 38);
            this.com.TabIndex = 14;
            //
            // btn_disconnect
            //
            this.btn_disconnect.Location = new System.Drawing.Point(533, 72);
            this.btn_disconnect.Name = "btn_disconnect";
            this.btn_disconnect.Size = new System.Drawing.Size(86, 23);
            this.btn_disconnect.TabIndex = 17;
            this.btn_disconnect.Text = "Baglantiyi kes";
            this.btn_disconnect.Click += new System.EventHandler(this.btn_disconnect_Click);
            //
            // label1
            //
            this.label1.BackColor = System.Drawing.Color.Transparent;
            this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 14F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.label1.ForeColor = System.Drawing.Color.Red;
            this.label1.Location = new System.Drawing.Point(251, 17);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(148, 24);
            this.label1.TabIndex = 24;
            this.label1.Text = "DARKOCEAN";
            //
            // panel1
            //
            this.panel1.BackColor = System.Drawing.SystemColors.ControlLight;
            this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.panel1.Controls.Add(this.label2);
            this.panel1.Controls.Add(this.sayiLbl);
            this.panel1.Controls.Add(this.label1);
            this.panel1.Controls.Add(this.btn_disconnect);
            this.panel1.Location = new System.Drawing.Point(0, 0);
            this.panel1.Name = "panel1";
            this.panel1.Size = new System.Drawing.Size(634, 104);
            this.panel1.TabIndex = 23;
            //
            // label2
            //
            this.label2.BackColor = System.Drawing.Color.Transparent;
            this.label2.Font = new System.Drawing.Font("Microsoft Sans Serif", 14F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.label2.ForeColor = System.Drawing.Color.Red;
            this.label2.Location = new System.Drawing.Point(251, 41);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(133, 24);
            this.label2.TabIndex = 26;
            this.label2.Text = " MODEM - 2";
            //
            // sayiLbl
            //
            this.sayiLbl.AutoSize = true;
            this.sayiLbl.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(162)));
            this.sayiLbl.ForeColor = System.Drawing.Color.Navy;
            this.sayiLbl.Location = new System.Drawing.Point(11, 72);
            this.sayiLbl.Name = "sayiLbl";
            this.sayiLbl.Size = new System.Drawing.Size(0, 13);
            this.sayiLbl.TabIndex = 25;
            //
            // listBox1
            //
            this.listBox1.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(162)));
            this.listBox1.FormattingEnabled = true;
            this.listBox1.Location = new System.Drawing.Point(0, 136);
            this.listBox1.Name = "listBox1";
            this.listBox1.ScrollAlwaysVisible = true;
            this.listBox1.Size = new System.Drawing.Size(634, 134);
            this.listBox1.TabIndex = 27;
            //
            // Form1
            //
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(632, 270);
            this.Controls.Add(this.listBox1);
            this.Controls.Add(this.panel1);
            this.Controls.Add(this.com);
            this.Controls.Add(this.label8);
            this.Name = "Form1";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "DARKOCEAN";
            this.Load += new System.EventHandler(this.Form1_Load);
            ((System.ComponentModel.ISupportInitialize)(this.com)).EndInit();
            this.panel1.ResumeLayout(false);
            this.panel1.PerformLayout();
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.Run(new Form1());
        }

        private void btn_disconnect_Click(object sender, System.EventArgs e)
        {
            // If com port is open then close it
            // to disconnect connection

            if (com.PortOpen)
            {
                com.PortOpen = false;
                MessageBox.Show("Disconnected...", this.Text,
                    MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }

        public string GeleniTemizle(string gelen)
        {
            string DATA = null;
            string LRC = null;

            string temp1 = gelen.Replace("\x02", "");
            string[] tempArray = temp1.Split('\x03');


            string kontrolLRC = "";

            string gelenLRC = tempArray[1];

            sbyte[] array;

            array = sistemim.PrepareLRCPacket(tempArray[0]);

            foreach (sbyte ch in array)
                LRC += Convert.ToChar(ch);

            kontrolLRC = LRC[LRC.Length - 1].ToString();

            if (gelenLRC == kontrolLRC )
            {
                DATA = tempArray[0];
            }
            else
            {
                sbyte[] array2;
                string LRC2 = null;

                array2 = sistemim.PrepareLRCPacket("000000000000215" + "package problem");
                DATA = null;

                foreach (sbyte ch2 in array2)
                    LRC2 += Convert.ToChar(ch2);

                DATA = "X" + LRC2;
            }

            return DATA;
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }
    }
}

Answer 1

您应该将 COM 端口 处理包装到一个单独的类中。该类将有自己的 COM 端口实例，然后您可以创建包装类的多个实例，每个实例对应您要访问的每个 COM 端口。