issue getting "line" instead of each char from COM port stream

[G-Oker]

Hello,

I'm trying to listen to a telephone system connected to a usb-to-serial connector.

Using ReadExisting I can see every char, but I would like every line (so I can then extrapolate the data out of it).

I have tried ReadLine instead, but my interface dosn't display any data.

I think this is because the feed isn't sending a \r\n (or 0x0d 0x0a)to represent an EoL (so , its listening to find an end of a call, but dosn't find the delimiter).

NB: Manuals on the phone system seem hard to find (to locate what the EoL char is )


is this the correct way, or is there a better way of getting the data "per line" ?

I am currently using this code:


class Program
{
public static void Main()
{
/// create serial port to listen to
SerialPort mySerialPort = new SerialPort("COM4");

mySerialPort.BaudRate = 9600;
mySerialPort.Parity = Parity.None;
mySerialPort.StopBits = StopBits.One;
mySerialPort.DataBits = 8;
mySerialPort.Handshake = Handshake.XOnXOff;
mySerialPort.RtsEnable = true;

/// Intercept data method
mySerialPort.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler);

/// Open (above) port
//mySerialPort.DtrEnable = true;
mySerialPort.Open();

/// Close the port
Console.WriteLine("Press any key to stop listening...");
Console.WriteLine();
Console.ReadKey();
mySerialPort.Close();
}

private static void DataReceivedHandler(object sender,SerialDataReceivedEventArgs e)
{

SerialPort sp = (SerialPort)sender;

/// "Reads all immediately available bytes, based on the encoding, in both the stream and the input buffer of the SerialPort object" - MS.
string indata = sp.ReadExisting();

/// doesn't work (no \r\n?). - "ReadLine() method will return when the port receives a carriage return and line feed byte combination by default on Windows. Or \r\n, or 0x0d 0x0a if you prefer." - SO
//string indata = sp.ReadLine();

Console.Write(indata);
}
}


Thank you

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