public SerialPortTran(string PortName, bool needReceive)
{
this.PortName = PortName;
sp = new SerialPort(PortName, 19200, Parity.None, 8, StopBits.One);
sp.ReceivedBytesThreshold = 5;
sp.Handshake = Handshake.None;
sp.DtrEnable = true;
sp.ReadTimeout = 2000;
sp.WriteTimeout = 2000;
autoreceive = needReceive;
SerialPortFixer.Execute(PortName);
if (sp.IsOpen)
{
sp.Close();
sp.Open();
}
else
{
sp.Open();
}
if (autoreceive)
{
sp.DataReceived += new SerialDataReceivedEventHandler(ReceiveMessage);
}
connected = true;
}
public static bool IsTheDevice(string port)
{
SerialPortTran spt;
try
{
SerialPortFixer.Execute(port);
spt = new SerialPortTran(port, false);
spt.SPWrite(Utils.HexToByte("681600000A"));
string result = "";
Thread.Sleep(100);
result = spt.spReadOnce();
spt.sp.Close();
if (result.StartsWith("6817"))
{
return(true);
}
}
catch
{
return(false);
}
finally
{
}
return(false);
}