Načítanie com portov na pc :

Na načítanie všetkých dostupných comportov vo windowse pouzijeme statickú metódu triedy SerialPort podľa nasledujúceho kódu:

SerialPort.GetPortNames();

Vytvorenie objektu a otvorenie portu :

Po vytvorení objectu priradíme nazov portu PortName ,prenosovú rýchlosť BaudRate, ďalej ešte nastavíme DataBits, Parity, StopBits . Nakoniec zavoláme metódu na otvorenie comportu Open() .

this.mySerialPort = new SerialPort();
this.mySerialPort.PortName = this.comboBox_ports.Text;
this.mySerialPort.BaudRate = Convert.ToInt16(this.comboBox_baud.Text);
this.mySerialPort.DataBits = Convert.ToInt16(this.comboBox_data.Text);
this.mySerialPort.Parity = (Parity)Enum.Parse(typeof(Parity), this.comboBox_parity.Text);
this.mySerialPort.StopBits = (StopBits)Enum.Parse(typeof(StopBits), this.comboBox_stop.Text);
this.mySerialPort.DataReceived += new SerialDataReceivedEventHandler(mySerialPort_DataReceived); 
this.mySerialPort.Open();

Posielanie dát :

private void sendData()
        {
            try
            {
             if (this.transMod == mod.ASCI)
                {
                    this.mySerialPort.WriteLine(this.richTextBox_trans.Text);
                }
                if (this.transMod == mod.HEX)
                {
                    byte[] data;
                    int i = 0;
                    string[] dataString = this.richTextBox_trans.Text.Split(new string[] { this.comboBox_sep.Text }, StringSplitOptions.RemoveEmptyEntries);
                    data = new byte[dataString.Length];
                    foreach (string d1 in dataString)
                    {
                        data[i++] = Convert.ToByte(d1, 16);
                    }
                    this.mySerialPort.Write(data, 0, data.Length);
                }
                if (this.transMod == mod.DEC)
                {
                    byte[] data;
                    int i = 0;
                    string[] dataString = this.richTextBox_trans.Text.Split(new string[] { this.comboBox_sep.Text }, StringSplitOptions.RemoveEmptyEntries);
                    data = new byte[dataString.Length];
                    foreach (string d1 in dataString)
                    {
                        data[i++] = Convert.ToByte(d1, 10);
                    }
                    this.mySerialPort.Write(data, 0, data.Length);
                }
                if (this.transMod == mod.BINARY)
                {
                    byte[] data;
                    int i = 0;
                    string[] dataString = this.richTextBox_trans.Text.Split(new string[] { this.comboBox_sep.Text }, StringSplitOptions.RemoveEmptyEntries);
                    data = new byte[dataString.Length];
                    foreach (string d1 in dataString)
                    {
                        data[i++] = Convert.ToByte(d1, 2);
                    }
                    this.mySerialPort.Write(data, 0, data.Length);
                }
            }
            catch(Exception ex1)
            {
                MessageBox.Show(ex1.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

Prijímanie dát :

 void mySerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
        {
            try
            {
                byte[] buffer = new byte[0];
                
                while (mySerialPort.BytesToRead > 0)
                {
                    buffer = new byte[mySerialPort.BytesToRead];
                    this.mySerialPort.Read(buffer, 0, mySerialPort.BytesToRead);
                }
                if (this.recMod == mod.ASCI)
                {
                    this.prijateData += Encoding.ASCII.GetString(buffer);
                }
                if (this.recMod == mod.HEX)
                {
                    foreach(byte s in buffer)
                    {
                        this.prijateData += s.ToString("X2") + this.separator;
                    }
                }
                if (this.recMod == mod.DEC)
                {
                    foreach (byte s in buffer)
                    {
                        this.prijateData += s.ToString() + this.separator;
                    }
                }
                if (this.recMod == mod.BINARY)
                {
                    foreach (byte s in buffer)
                    {
                        this.prijateData += Convert.ToString(s, 2).PadLeft(8,'0') + this.separator;
                    }
                }
               // this.prijateData += Encoding.ASCII.GetString(buffer);
                this.SetControlPropertyValue(this.richTextBox_rec, "Text", this.prijateData);
            }
            catch (Exception ex1)
            {
                MessageBox.Show(ex1.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

GUI programu :

V prílohe su na stiahnutie kompletné zdrojové kódy k program.

V ver.1.0.0.2 je pridaná možnosť odosielať CRC16 pre odoslané dáta.