/// <summary>
/// When serial received data, will call this method
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (sp.BytesToRead <= 0)
{
return;
}
//Thread Safety explain in MSDN:
// Any public static (Shared in Visual Basic) members of this type are thread safe.
// Any instance members are not guaranteed to be thread safe.
// So, we need to synchronize I/O
lock (thisLock)
{
int len = sp.BytesToRead;
Byte[] data = new Byte[len];
try
{
sp.Read(data, 0, len);
}
catch (System.Exception)
{
//catch read exception
}
SerialPortEventArgs args = new SerialPortEventArgs();
args.receivedBytes = data;
if (comReceiveDataEvent != null)
{
comReceiveDataEvent.Invoke(this, args);
}
}
}
/// <summary>
/// Open Serial port
/// </summary>
/// <param name="portName"></param>
/// <param name="baudRate"></param>
/// <param name="dataBits"></param>
/// <param name="stopBits"></param>
/// <param name="parity"></param>
/// <param name="handshake"></param>
public void Open(string portName, String baudRate,
string dataBits, string stopBits, string parity,
string handshake)
{
if (sp.IsOpen)
{
Close();
}
sp.PortName = portName;
sp.BaudRate = Convert.ToInt32(baudRate);
sp.DataBits = Convert.ToInt16(dataBits);
/**
* If the Handshake property is set to None the DTR and RTS pins
* are then freed up for the common use of Power, the PC on which
* this is being typed gives +10.99 volts on the DTR pin & +10.99
* volts again on the RTS pin if set to true. If set to false
* it gives -9.95 volts on the DTR, -9.94 volts on the RTS.
* These values are between +3 to +25 and -3 to -25 volts this
* give a dead zone to allow for noise immunity.
* http://www.codeproject.com/Articles/678025/Serial-Comms-in-Csharp-for-Beginners
*/
if (handshake == "None")
{
//Never delete this property
sp.RtsEnable = true;
sp.DtrEnable = true;
}
SerialPortEventArgs args = new SerialPortEventArgs();
try
{
sp.StopBits = (StopBits)Enum.Parse(typeof(StopBits), stopBits);
sp.Parity = (Parity)Enum.Parse(typeof(Parity), parity);
sp.Handshake = (Handshake)Enum.Parse(typeof(Handshake), handshake);
sp.WriteTimeout = 1000; /*Write time out*/
sp.Open();
sp.DataReceived += new SerialDataReceivedEventHandler(DataReceived);
args.isOpend = true;
}
catch (System.Exception)
{
args.isOpend = false;
}
if (comOpenEvent != null)
{
comOpenEvent.Invoke(this, args);
}
}
public void CloseComEvent(Object sender, SerialPortEventArgs e)
{
if (this.InvokeRequired)
{
Invoke(new Action <Object, SerialPortEventArgs>(CloseComEvent), sender, e);
return;
}
if (!e.isOpend) //close successfully
{
//baudRateCbx.Enabled = false;
//dataBitsCbx.Enabled = false;
//stopBitsCbx.Enabled = false;
//parityCbx.Enabled = false;
//handshakingcbx.Enabled = false;
}
}
/// <summary>
/// Close serial port thread
/// </summary>
private void CloseSpThread()
{
SerialPortEventArgs args = new SerialPortEventArgs();
args.isOpend = false;
try
{
sp.Close(); //close the serial port
sp.DataReceived -= new SerialDataReceivedEventHandler(DataReceived);
}
catch (Exception)
{
args.isOpend = true;
}
if (comCloseEvent != null)
{
comCloseEvent.Invoke(this, args);
}
}
public void OpenComEvent(Object sender, SerialPortEventArgs e)
{
if (this.InvokeRequired)
{
Invoke(new Action <Object, SerialPortEventArgs>(OpenComEvent), sender, e);
return;
}
if (e.isOpend) //Open successfully
{
try
{
timer1.Enabled = false;//关闭定时器
//baudRateCbx.Enabled = true;//“波特率”可选
//parityCbx.Enabled = true;//“校验位”可选
//dataBitsCbx.Enabled = true;//“数据位”可选
//stopBitsCbx.Enabled = true;//“停止位”可选
}
catch
{
MessageBox.Show("串口断开失败", "错误");
}
}
}
public void ComReceiveDataEvent(Object sender, SerialPortEventArgs e)
{
if (this.InvokeRequired)
{
try
{
Invoke(new Action <Object, SerialPortEventArgs>(ComReceiveDataEvent), sender, e);
}
catch (System.Exception)
{
//disable form destroy exception
}
return;
}
// for(int i=0;i<e.receivedBytes.Length;i++){
// RecBytes[RecNum++] = e.receivedBytes[i];
// }
if (radioButton3.Checked) //display as string
{
this.memoEdit1.MaskBox.AppendText(Encoding.Default.GetString(e.receivedBytes));
}
else //display as hex
{
if (memoEdit1.Text.Length > 0)
{
memoEdit1.MaskBox.AppendText(" ");
}
memoEdit1.MaskBox.AppendText(IController.Bytes2Hex(e.receivedBytes));
}
if ((e.receivedBytes[0] == 0x0D) && (e.receivedBytes[e.receivedBytes.Length - 1] == 0x0D))
{
memoEdit1.Text += "\r\n";
switch (e.receivedBytes[1])
{
case 0xfe:
byte[] verbuf = new byte[3];
verbuf[0] = e.receivedBytes[2];
verbuf[1] = e.receivedBytes[3];
verbuf[2] = e.receivedBytes[5];
string result = string.Join(".", verbuf);
barButtonItem11.Caption = "固件版本:" + result;
barButtonItem9.Enabled = true;
break;
case 0xf1:
f3.Output_Status_Show(e.receivedBytes);
break;
case 0xf9:
f3.Note_Message(e.receivedBytes);
break;
case 0xf8:
f3.SingleReverse_Parameter_Display(e.receivedBytes[2], e.receivedBytes[3], e.receivedBytes[4], e.receivedBytes[5], e.receivedBytes[6], e.receivedBytes[6]);
break;
case 0xe0:
f3.Spreadsheet_Content_Show(e.receivedBytes);
break;
case 0xf0:
f3.calibration_process(e.receivedBytes);
break;
}
//Array.Clear(RecBytes, 0, 32);
Array.Clear(e.receivedBytes, 0, e.receivedBytes.Length);
//RecNum = 0;
}
}
