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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2233 | - | 1 | ///============================================================================ |
| 2 | /// This file is part of MIKROKOPTER SERIAL CONTROL TUTORIAL. |
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| 3 | /// by JOHN C. MACDONALD at Ira A. Fulton College of Engineering and Technology |
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| 4 | /// (http://hdl.lib.byu.edu/1877/2747) |
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| 5 | /// (http://hdl.lib.byu.edu/1877/2748) |
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| 6 | ///============================================================================ |
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| 7 | using System; |
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| 8 | using System.Collections.Generic; |
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| 9 | using System.ComponentModel; |
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| 10 | using System.Drawing; |
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| 11 | using System.Data; |
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| 12 | using System.Linq; |
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| 13 | using System.Text; |
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| 14 | using System.Windows.Forms; |
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| 15 | using System.IO.Ports; |
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| 16 | using System.IO; |
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| 17 | |||
| 18 | namespace SimpleSerialPort |
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| 19 | { |
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| 20 | public partial class SimpleSerialPort : UserControl |
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| 21 | { |
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| 22 | private SerialPort port; |
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| 23 | |||
| 24 | public event PortOpenedHandler PortOpened; |
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| 25 | public delegate void PortOpenedHandler(); |
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| 26 | public event PortClosedHandler PortClosed; |
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| 27 | public delegate void PortClosedHandler(); |
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| 28 | // public delegate void PortOpenedHandler(Stream stream); |
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| 29 | |||
| 30 | public event DataReceivedHandler DataReceived; |
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| 31 | public delegate void DataReceivedHandler(byte[] buffer); |
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| 32 | public SimpleSerialPort() |
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| 33 | { |
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| 34 | InitializeComponent(); |
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| 35 | |||
| 36 | port = new SerialPort(); |
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| 37 | port.ReadTimeout = 10000; |
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| 38 | port.WriteTimeout = 1000; |
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| 39 | textBoxStatus.Text = "closed"; |
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| 40 | //textBoxBaudRate.Text = port.BaudRate.ToString(); |
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| 41 | textBoxBaudRate.Text = "57600"; |
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| 42 | textBoxDataBits.Text = port.DataBits.ToString(); |
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| 43 | populateComboBoxes(); |
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| 44 | setComboBoxDefaultValues(); |
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| 45 | // PortOpened += SimpleSerialPort_PortOpened; |
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| 46 | } |
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| 47 | |||
| 48 | |||
| 49 | public SerialPort Port |
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| 50 | { |
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| 51 | get |
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| 52 | { |
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| 53 | return port; |
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| 54 | } |
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| 55 | } |
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| 56 | |||
| 57 | public void Connect(bool bConn) |
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| 58 | { |
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| 59 | if (bConn) |
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| 60 | buttonOpen.Invoke((Action)(()=> buttonOpen_Click(null, null))); |
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| 61 | else |
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| 62 | buttonClose.Invoke((Action)(() => buttonClose_Click(null, null))); |
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| 63 | } |
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| 64 | |||
| 65 | private void buttonOpen_Click(object sender, EventArgs e) |
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| 66 | { |
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| 67 | try |
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| 68 | { |
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| 69 | if (port.IsOpen == true) |
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| 70 | { |
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| 71 | port.DataReceived -= SerialPortDataReceived; |
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| 72 | port.Close(); |
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| 73 | } |
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| 74 | |||
| 75 | lastoffset = 0; |
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| 76 | append = false; |
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| 77 | |||
| 78 | port.PortName = comboBoxPortName.Text; |
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| 79 | port.BaudRate = Convert.ToInt32(textBoxBaudRate.Text); |
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| 80 | port.DataBits = Convert.ToInt32(textBoxDataBits.Text); |
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| 81 | port.StopBits = (StopBits)Enum.Parse(typeof(StopBits), comboBoxStopBits.Text); |
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| 82 | port.Parity = (Parity)Enum.Parse(typeof(Parity), comboBoxParity.Text); |
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| 83 | port.DataReceived += SerialPortDataReceived; |
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| 84 | |||
| 85 | port.Open(); |
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| 86 | textBoxStatus.Text = "open"; |
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| 87 | if (PortOpened != null) |
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| 88 | { |
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| 89 | // PortOpened(port.BaseStream); |
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| 90 | PortOpened(); |
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| 91 | } |
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| 92 | } |
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| 93 | catch (Exception ex) |
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| 94 | { |
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| 95 | textBoxStatus.Text = "error: " + ex; |
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| 96 | } |
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| 97 | } |
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| 98 | |||
| 99 | private void buttonClose_Click(object sender, EventArgs e) |
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| 100 | { |
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| 101 | port.DataReceived -= SerialPortDataReceived; |
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| 102 | port.Close(); |
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| 103 | PortClosed(); |
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| 104 | textBoxStatus.Text = "closed"; |
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| 105 | lastoffset = 0; |
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| 106 | append = false; |
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| 107 | } |
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| 108 | |||
| 109 | public string[] getPortNameValues() |
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| 110 | { |
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| 111 | try |
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| 112 | { |
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| 113 | return SerialPort.GetPortNames().Reverse().ToArray(); |
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| 114 | } |
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| 115 | catch |
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| 116 | { |
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| 117 | return new string[0]; |
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| 118 | } |
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| 119 | } |
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| 120 | |||
| 121 | public string[] getStopBitValues() |
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| 122 | { |
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| 123 | return Enum.GetNames(typeof(StopBits)); |
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| 124 | } |
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| 125 | |||
| 126 | public string[] getParityValues() |
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| 127 | { |
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| 128 | return Enum.GetNames(typeof(Parity)); |
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| 129 | } |
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| 130 | |||
| 131 | private void populateComboBoxes() |
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| 132 | { |
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| 133 | comboBoxPortName.Items.AddRange(getPortNameValues()); |
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| 134 | comboBoxStopBits.Items.AddRange(getStopBitValues()); |
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| 135 | comboBoxParity.Items.AddRange(getParityValues()); |
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| 136 | } |
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| 137 | |||
| 138 | private void setComboBoxDefaultValues() |
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| 139 | { |
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| 140 | try { comboBoxPortName.SelectedIndex = 0; } |
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| 141 | catch { } |
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| 142 | try { comboBoxStopBits.SelectedIndex = 1; } |
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| 143 | catch { } |
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| 144 | try { comboBoxParity.SelectedIndex = 0; } |
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| 145 | catch { } |
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| 146 | } |
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| 147 | |||
| 148 | byte[] messageBuffer = new byte[4096]; |
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| 149 | int lastoffset = 0; |
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| 150 | bool append = false; |
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| 151 | byte sentinel = Convert.ToByte('\r'); |
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| 152 | |||
| 153 | object oLock = 0; |
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| 154 | private void SerialPortDataReceived(object sender, SerialDataReceivedEventArgs e) |
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| 155 | { |
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| 156 | System.Threading.Monitor.Enter(oLock); |
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| 157 | int offset = 0; |
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| 158 | try |
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| 159 | { |
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| 160 | byte[] buffer = new byte[port.BytesToRead]; |
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| 161 | port.Read(buffer, 0, port.BytesToRead); |
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| 162 | |||
| 163 | bool bFound = false; |
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| 164 | for (int i = 0; (i < buffer.Length) && port.IsOpen; i++) |
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| 165 | { |
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| 166 | if(buffer[i]==sentinel) |
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| 167 | { |
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| 168 | if (!append) |
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| 169 | { |
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| 170 | byte[] message = new byte[i+1 - offset]; |
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| 2257 | - | 171 | if (buffer[offset] != '#') |
| 2233 | - | 172 | System.Diagnostics.Debug.Print(buffer[offset].ToString()); |
| 173 | Buffer.BlockCopy(buffer, offset, message, 0, i + 1 - offset); |
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| 174 | if (DataReceived != null) |
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| 175 | DataReceived(message); |
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| 176 | } |
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| 177 | else |
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| 178 | { |
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| 179 | |||
| 180 | Buffer.BlockCopy(buffer, 0, messageBuffer, lastoffset, i + 1); |
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| 181 | byte[] message = new byte[lastoffset + i + 1]; |
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| 182 | Buffer.BlockCopy(messageBuffer, 0, message, 0, message.Length); |
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| 183 | messageBuffer.Initialize(); |
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| 184 | append = false; |
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| 185 | lastoffset = 0; |
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| 186 | // System.Diagnostics.Debug.Print(message.Length.ToString()); |
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| 187 | // System.Diagnostics.Debug.Print(BitConverter.ToString(message)); |
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| 188 | if (DataReceived != null) |
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| 189 | DataReceived(message); |
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| 190 | } |
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| 191 | offset = i + 1; |
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| 192 | if (buffer.Length > i + 1) |
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| 193 | { |
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| 194 | //offset = i + 1; |
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| 195 | bFound = false; |
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| 196 | } |
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| 197 | else |
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| 198 | { |
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| 199 | // offset = 0; |
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| 200 | bFound = true; |
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| 201 | } |
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| 202 | |||
| 203 | |||
| 204 | } |
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| 205 | |||
| 206 | } |
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| 207 | if(!bFound && port.IsOpen) |
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| 208 | { |
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| 209 | if (!append) |
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| 210 | { |
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| 211 | if (buffer[offset] != '#') |
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| 212 | System.Diagnostics.Debug.Print(buffer[offset].ToString("X2")); |
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| 213 | Buffer.BlockCopy(buffer, offset, messageBuffer, 0, buffer.Length-offset); |
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| 214 | lastoffset = (buffer.Length - offset); |
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| 215 | } |
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| 216 | else |
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| 217 | { |
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| 218 | if (messageBuffer[0] != '#') |
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| 219 | System.Diagnostics.Debug.Print(buffer[0].ToString("X2")); |
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| 220 | Buffer.BlockCopy(buffer, offset, messageBuffer, lastoffset, buffer.Length-offset); |
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| 221 | |||
| 222 | lastoffset += (buffer.Length - offset); |
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| 223 | } |
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| 224 | append = true; |
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| 225 | |||
| 226 | } |
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| 227 | } |
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| 228 | catch(Exception ex) |
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| 229 | { |
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| 230 | System.Diagnostics.Debug.Print(ex.Message); |
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| 231 | } |
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| 232 | finally |
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| 233 | { |
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| 234 | System.Threading.Monitor.Exit(oLock); |
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| 235 | } |
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| 236 | |||
| 237 | |||
| 238 | } |
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| 2261 | - | 239 | |
| 240 | private void btnRefresh_Click(object sender, EventArgs e) |
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| 241 | { |
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| 242 | if (!port.IsOpen) |
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| 243 | { |
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| 244 | comboBoxPortName.Items.Clear(); |
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| 245 | comboBoxPortName.Items.AddRange(getPortNameValues()); |
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| 246 | } |
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| 247 | else |
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| 248 | MessageBox.Show("Port has to be closed!"); |
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| 249 | } |
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| 2233 | - | 250 | } |
| 251 | } |