in example xml files in protocols folder there is no <format> keyword in
input sections. You can try removing <format> parameters.
On Sat, Jun 21, 2008 at 4:25 AM, Brent Terwilliger <
[EMAIL PROTECTED]> wrote:
> I am trying to control several of FlightGear's internal options via the
> Generic Input protocol, without success. I have been able to create a UDP
> Listener application, setup an "Output block" in the XML protocol file,
> and succesfully read the output string via UDP Socket from FlightGear. Now
> I want to do the opposite and control these items using a Sender application
> and defined input blocks in the protocol XML file. To simplify things I have
> only attempted to write to the Longitude and Latitude position values.
>
> The following describes code I use in my UDP Sender app, a C# application,
> the protocol XML file, and the command line arguments used to start
> FlightGear.
>
> First, I developed a simple C# application that initializes a UDP Socket
> using the following bit of code that is called once:
>
> IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("127.0.0.1"),
> int.Parse("5500"));
> Socket xmlServer = new Socket(AddressFamily.InterNetwork, SocketType.Dgram,
> ProtocolType.Udp);
> xmlServer.Connect(ipep);
>
> Then a timer function calls the following bit of code every 100
> milliseconds:
>
> string templongitude = "-122.357246";
> string templatitude = "37.613544";
> string desiredDevider = ";";
> string tempString = templongitude + desiredDevider + templatitude + "\r";
> byte[] data = new byte[1028];
> data = Encoding.ASCII.GetBytes(tempString);
> xmlServer.Send(data);
>
> The implmentation of these two pieces of code results in the following
> string being sent to port 5500 on 127.0.0.1, every 100 milliseconds:
> "-122.357246;37.613544"
>
> I have verified this using my aforemention UDP Listener application.
>
> The following represents the "simpleLongLat_in.xml" file, that is used to
> define the Long/Lat input "chunks":
>
> <?xml version="1.0"?>
> <PropertyList>
> <generic>
> <input>
> <line_separator>\r</line_separator>
> <var_separator>;</var_separator>
> <chunk>
> <name>Longitude Degree</name>
> <node>/position/longitude-deg</node>
> <type>float</type>
> <format>%f</format>
> </chunk>
> <chunk>
> <name>Latitude Degree</name>
> <node>/position/latitude-deg</node>
> <type>float</type>
> <format>%f</format>
> </chunk>
> </input>
> </generic>
> </PropertyList>
>
> Finally, I begin my application and start broadcasting the data to port
> 5500, on 127.0.0.1, then I open FlightGear with the following options:
> --fdm=null
> --model-hz=100
> --generic=socket,in,100,127.0.0.1,5500,udp,simpleLongLat_in
>
> FlightGear begins, and starts loading, upon reaching the "loading scenery"
> mark, I get a "error reading data." message on the console window, that
> repeats every 100 milliseconds. I've tried various combinations of
> formatting to the XML file and to the outgoing text string without success
> (such as placing "long=%f" in the <format> line of the XML file and the
> outgoing string). What am I doing wrong?
>
> The following represents the PC I'm running this on:
> Windows XP OS
> Pentium 4 CPU, 2.80GHz
> 1.0 GB RAM
>
> While not a screaming machine, I can run FlightGear on this platform,
> without major problems.
>
> Thanks,
>
> Brent A. Terwilliger
> [EMAIL PROTECTED]
>
>
>
>
>
>
>
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