Hi
I am developing some monitoring tool for some kind of protocol based on serial communication.
Serial BaudRate=187,5kb
I use System.IO.Ports.SerialPort class.
This protocol has 4 kinds of frames. They have 1Byte,3Bytes,6Bytes, 10-255Bytes. I can work with them but I receive them too late to respond.
For the beginning I receive first packed after ex. 96ms (too late), and it contains about 1000B. This means 20-50 frames (too much, too late).
Later its work more stable, 3-10Bytes but it is still too late because it contains 1-2 frames. Of Course 1 frame is OK, but 2 is too late.
Can you point me how can I deal with it more reliable? I know it is possible.
Revision1:
I tried straight way:
private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (!serialPort1.IsOpen) return;
this.BeginInvoke(new EventHandler(this.DataReceived));
}
And Backgroud worker:
And ... new Tread(Read)
and... always the same. Too late, too slow.
Do I have to go back to WinApi and import some kernel32.dll functions?
Revision 2:
this is the part of code use in the Treading way:
int c = serialPort1.BytesToRead;
byte[] b = new byte[c];
serialPort1.Read(b, 0, c);
I guess it is some problem with stream use inside SerialPort class. Or some synchronization problem.
Revision 3:
I do not use both at once!! I just tried different ways.
Regards
MarekK
