Progamming help with FSBus dll

[RobiD]

Hi everyone,

Can anyone give me an example of the coding for a servo (RPM gauge) in FSBus dll.

If I can find an example, I should be able to replecate for the rest of my gauges.

Need coding for: examplerpm.h, examplerpm.cpp, the entry in main cockpit.cpp and stdafx.h file.

Any help would be appreciated.

Thanks
David

[sgaert]

Hi David,

i make a untested sample for you, how to make your own Software please look to the Documentation page 22-24.
I dont know what RPM you mean. In the sample i use APU_RPM (0B54)

examplerpm.h

#ifndef __EXAMPLERPM_H
#define __EXAMPLERPM_H

#define OID_EXAMPLERPM_GROUP		(10 << OID_CONTROL_BITS)
// any OID_xxx_GROUP should have a unique number, left shifted by OID_CONTROL_BITS 

// declaration of all (max 32) objects of this group
#define C_RPMSERVO		OID_EXAMPLERPM_GROUP + 0
#define FS_APURPM		OID_EXAMPLERPM_GROUP + 1


// declare the functions in the corresponding .cpp file
void BuildEXAMPLERPMObjects();
void cbEXAMPLERPM (int oid, int val, double dval);

#endif

examplerpm.cpp

#include "stdafx.h"

void BuildEXAMPLERPMObjects()
{
	MkFsbusObject (BTP_A_OUT,C_RPMSERVO, 16, 80); //Servo ports are 80-87
	MakeFsObject(FS_APURPM, 0x0B54, 4, TP_UI32,  FS_NORMAL);  //the TP_UI32 is maybe wrong it must be a FLT32
}

void cbEXAMPLERPM (int oid, int val, double dval)
{

	switch (oid)
	{
	case FS_APURPM:
         int x = val * 2,55;   //Servo need 0-255 as value, fo an other RPM you need a new caluculation
	   FsbusWrite (C_RPMSERVO, x);
	break;
	}
}

additional to the given stdafx.h

examplerpm.h

additional to the given parts of the cockpit.cpp
in funktion _tmain

 BuildEXAMPLERPMObjects();

in funktion EventCallback

case OID_EXAMPLERPM_GROUP:
             cbEXAMPLERPM (oid, val, dval);
	break;

I hope that helps a little bit.

Regards,
Stefan

[RobiD]

Hi Stefan,

Fantastic, I really appreciate the time you have taken in this reply.

The RPM I am referring to is the tachometer in a General Aviation plane, say a cessna or the such.

I am using the servo board for this and it has a cid 25, RID 8

I tried a couple of times to code this and was getting an 'object out of range' error message with '(80 - 87)' as you have indicated in the code.

I will give your code a try and see if I can get it to work.

Once again, I really appreciate your help.

Regards
David

[Jan737]

Hi David,

Have you tried CID 25 RID 80.
RID 80 is the first connector and 87 the last connector of the Servo board.

Best regards

Jan Geurtsen

[RobiD]

Wow, I didn't get that in the servo board documentation.

Thank you.

David

[sgaert]

hi,
that is right. You can find it in the dll Docu part MakeFsbusObjekt.

Regards,
Stefan

[RobiD]

Of course you are right. I found it after having another good look. I don't know where I was looking before.

I will put all the code together and see how I go. Hopefully it will compile without complaint and work beautifully.

Thanks for the help everyone, I'll post how I go.

David

[RobiD]

Ok, I have spent some time trialling and testing.

I have it down to one error on compiling and that error is:

davids flight sim\enginerpm.cpp(16) : error C2059: syntax error : 'constant'

When I hold Shift + F4 the specific line is :

int x = val * 2,55; //Servo need 0-255 as value, fo an other RPM you need a new caluculation

I'll post the code so far.

You will notice that I don't have this:

in funktion EventCallback

Code:


case OID_EXAMPLERPM_GROUP: cbEXAMPLERPM (oid, val, dval); break;


In the EventCallback function area as putting in the EventCallback was producing many more errors as it wasn't declared.

So here are the files:

cockpit.cpp


#include"stdafx.h"
#include
#include

int _tmain(int argc, _TCHAR* argv[])
{
int v = GetFsbusDLLVersion ();
if (v < 100)
{
printf ("Program requires Fsbus DLL version 1.0.0 or higher\r\n");
return 1;
}
CheckIn();
FsConnect();
FsbusOpen("COM1");

// TODO: add functions to create the fsbus software objects
cbLLSwitchboardBuildObjects();
cbEngineBuildObjects();
cbMagnetoBuildObjects();
cbEnginerpmBuildObjects();

printf ("press any key to exit ...\r\n");

while (!_kbhit())
FsbusMux(500);

CheckOut();
return 0;
}


stdafx.h

#pragmaonce
#include"targetver.h"
#include
#include


// TODO: reference additional headers your program requires here
#include
#include"fsbus.h"
#define OID_LLSWITCHBOARD_GROUP (1 << OID_CONTROL_BITS)
#include"switchboard.h"
#define OID_MAGNETO_GROUP (10 << OID_CONTROL_BITS)
#include"magneto.h"
#define OID_ENGINE_GROUP (2 << OID_CONTROL_BITS)
#include"engine.h"
#define OID_ENGINERPM_GROUP (11 << OID_CONTROL_BITS)
#include"enginerpm.h"


enginerpm.h

#ifndef __ENGINERPM_H
#define __ENGINERPM_H
// any OID_xxx_GROUP should have a unique number, left shifted by OID_CONTROL_BITS
// declaration of all (max 32) objects of this group
// declare the functions in the corresponding .cpp file
void cbEnginerpmBuildObjects();
void cbEnginerpm (int oid, int val, double dval);
enum e_Enginerpm
{
C_RPMSERVO = OID_ENGINERPM_GROUP,
};
void BuildFsuipcObjects(void);
enum _fsobjectid
{
FS_ENGINE1RPM,
};
#endif


enginerpm.cpp


#include"stdafx.h"
staticint x;
void cbEnginerpmBuildObjects()
{
MkFsbusObject (BTP_A_OUT,C_RPMSERVO,"RpmGauge",cbEnginerpm, 25, 87); //Servo ports are 80-87
MkFsObject(FS_ENGINE1RPM,"RpmGauge", cbEnginerpm, 0x08C8, 2, TP_UI16, FS_NORMAL); //the TP_UI32 is maybe wrong it must be a FLT32
}
void cbEnginerpm (int oid, int val, double dval)
{
switch (oid)
{
case FS_ENGINE1RPM:
int x = val * 2,55; //Servo need 0-255 as value, fo an other RPM you need a new caluculation
FsbusWrite (C_RPMSERVO, x);
break;
}
}


Any help would be appreciated as I am not getting anywhere very fast.

Thanks again,
David

[xlonglife]

You have a comma in a numeric (ie 2,55)

Shouldnt that be 2.55 or even 255?

[sgaert]

Right, 2.55 or *100/255.

The engine need an other calculation for the rigt values. Please look to the FSUIPC SDK there you see what you need.

regards,
Stefan