Development of interface software for the miniRDS in C#

[SteveyD]

Yes,  even the most recent zip package from 4 posts above.

It occurs on your example.exe in Delphi as well as my C# conversion.

[Jan]

The Disconnect procedure is pretty simple:

Code: [Select]

procedure TDM1.Disconnect;
begin
Connected:=false;
try
  VaComm1.Close;
  sleep(200);
  except
  end;
end;

Could you confirm that the error occurs also if you connect to some COM port previously?

[SteveyD]

Jan

I've tested my Serial (with 2K resistor replacement) version and it consistently returns the error.

My LPT version is functioning fine in both Delphi and C#.

I will rebuilding my Serial interface cable and will test again.

Steve

[Jan]

This kind of error may occur if you use USB to RS232 converter and if you remove the converter from the USB before the connection is closed in the application. (But for example FTDI drivers are well written and do not raise this error.)

The cable wiring has no effect on it. It may be a driver issue. There's something more you can test:
http://pira.cz/rds/TinyRDS_Setup.exe - This is the minirds control software based on mrdsio.dll
http://pira.cz/rds/minirds.zip - This is an older minirds control software that accesses the port directly (but using the same VaComm component).

[SteveyD]

Error was found

my Serial adapter cable was at fault.

[Jan]

Is it a USB to RS232?

[SteveyD]

No, just a simple bi-directional Serial port interface.

I built a new interface and the errors are gone.