Error 15 with FSUIPCclient.dll - C#

[VoltaCrew]

Hello!

I started using FSUIPC for developping and I feel stick about something which is annoying me since 3 hours.

public double getAltitude()
        {
            Offset<long> altitudereq = new Offset<long>(0x0570);
            try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
            double altitude = (double)altitudereq.Value * 3.28084D / (65536D * 65536D);
            altitude = Math.Round(altitude);
            return altitude;
        }

        public double getAirspeed()
        {
            Offset<int> airspeedreq = new Offset<int>(0x02B8);
            try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
            double airspeed = (double)airspeedreq.Value / 128;
            airspeed = Math.Round(airspeed);
            return airspeed;
        }

        public double getHeading()
        {
            Offset<double> headingreq = new Offset<double>(0x0580);
            try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
            double heading = (double)headingreq.Value * 360 / (65536D * 65536D);
            heading = Math.Round(heading);
            return heading;
        }
        public double getFPM()
        {
            Offset<short> FPMreq = new Offset<short>(0x0842);
            try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
            double FPM = (double)FPMreq.Value * 3.28084;
            FPM = Math.Round(FPM * -1);
            return FPM;
        }

I'm just getting an error 15 if I am removing the try/catch, and blank returns if I let them.

 

All my code is working, but this part won't. FSUIPConnection.Open() works well too.

 

Do somebody have an answer ?

Noah

(Sorry for the mistakes, I am not an english native speaker :/ )

[Paul Henty]

Hi Noah,

 

Error #15 means the FSUIPC memory file is full. The reason it's full is that you're declaring the offsets in the method body. Each time you run the method a new offset is declared. This will quickly fill up the FSUIPC memory file.

 

All offsets should be declared only once during the lifetime of your program. The best way of doing this is to declare offsets at the class or form level.

 

e.g.

private Offset<long> altitudereq = new Offset<long>(0x0570);
private Offset<short> FPMreq = new Offset<short>(0x0842);
private Offset<double> headingreq = new Offset<double>(0x0580);
private Offset<int> airspeedreq = new Offset<int>(0x02B8);

public double getAltitude()
{
try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
double altitude = (double)altitudereq.Value * 3.28084D / (65536D * 65536D);
altitude = Math.Round(altitude);
return altitude;
} 

public double getAirspeed()
{
try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
double airspeed = (double)airspeedreq.Value / 128;
airspeed = Math.Round(airspeed);
return airspeed;
}
 
public double getHeading()
{
try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
double heading = (double)headingreq.Value * 360 / (65536D * 65536D);
heading = Math.Round(heading);
return heading;
}

public double getFPM()
{
try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
double FPM = (double)FPMreq.Value * 3.28084;
FPM = Math.Round(FPM * -1);
return FPM;
}

Paul

[VoltaCrew]

Hi Noah,

 

Error #15 means the FSUIPC memory file is full. The reason it's full is that you're declaring the offsets in the method body. Each time you run the method a new offset is declared. This will quickly fill up the FSUIPC memory file.

 

All offsets should be declared only once during the lifetime of your program. The best way of doing this is to declare offsets at the class or form level.

 

e.g.

private Offset<long> altitudereq = new Offset<long>(0x0570);
private Offset<short> FPMreq = new Offset<short>(0x0842);
private Offset<double> headingreq = new Offset<double>(0x0580);
private Offset<int> airspeedreq = new Offset<int>(0x02B8);

public double getAltitude()
{
try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
double altitude = (double)altitudereq.Value * 3.28084D / (65536D * 65536D);
altitude = Math.Round(altitude);
return altitude;
} 

public double getAirspeed()
{
try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
double airspeed = (double)airspeedreq.Value / 128;
airspeed = Math.Round(airspeed);
return airspeed;
}
 
public double getHeading()
{
try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
double heading = (double)headingreq.Value * 360 / (65536D * 65536D);
heading = Math.Round(heading);
return heading;
}

public double getFPM()
{
try { FSUIPCConnection.Process(); } catch (FSUIPCException ex) { }
double FPM = (double)FPMreq.Value * 3.28084;
FPM = Math.Round(FPM * -1);
return FPM;
}

Paul

Yes that was it, thank you so much :)