gpib-32.obj

[gpib_user17]

Hi,

I am trying to create a C program which can remotely control my Attenuation box remotely using NI-GPIB. I read the userManual of NI-488.2 and installed the Measurment & Automation s/w on my PC. I was able to "Communicate with Instrument" and use "Interactive Control" to send commands and receive expected info. 

Now I want to  pick up the "sample" file provided by NI, and compile it with including ni4882.h and ni4882.obj But when I try to link the project with ni4882.obj, the VC++ 6.0 gives following error:

--------------------Configuration: template_automation - Win32 Debug--------------------

Linking...

LINK : warning LNK4098: defaultlib "LIBCD" conflicts with use of other libs; use /NODEFAULTLIB:library

ni4882.obj : fatal error LNK1103: debugging information corrupt; recompile module

Error executing link.exe

Can you pls provide me with the *.obj file which I would link with VC++ 6.0? Or I guess source code file which has all the functions listed in ni4882.h.

thanks,

[smercurio_fc]

That warning is telling you there's a conflict with a link setting amongst the libraries being used. A common one is that one library was compiled for use in a single-threaded app and another for multi-threaded. If you Google for that warning you will see lots of hits. Are you using one of the examples that gets installed with NI-488.2 as a starting point?

[gpib_user17]

Yeah I am using C:\Program Files\National Instruments\NI-488.2\Bin\sample.txt with following includes:

#include <stdio.h>

#include <windows.h>

#include "ni4882.h"

I added  these to my project: 

C:\Program Files\National Instruments\Shared\ExternalCompilerSupport\C\include under "Include Files"

C:\Program Files\National Instruments\Shared\ExternalCompilerSupport\C\lib32\msvc under "Library Files" 

And added <ni4882.obj> under Project > Settings > Link > Object/Lib Modules:

And I get this error:

Linking... 

ni4882.obj : fatal error LNK1103: debugging information corrupt; recompile module

I also looked at http://forums.ni.com/ni/board/message?board.id=140&message.id=41079#M41079 and tried

cl /I"%NIEXTCCOMPILERSUPP%\include" sample.c "%NIEXTCCOMPILERSUPP%\lib32\msvc\ni4882.obj" /MD

which gives C:\testing\template_automation.c(6) : fatal error C1083: Cannot open include file: 'stdio.h': No such file or directory

[smercurio_fc]

According to this, this appears to be an issue with trying to use a newer version of NI-488.2 with older compilers.

[gpib_user17]

I am using 4.5.0f0 version of Measurment & Automation. Is that OK or you suggest some other version?

thanks

[Dennis_Knutson]

The version of MAX is totally irrelevant. The link talked about the version of NI-488.2 and the version of Visual C++.

[gpib_user17]

2.60

[gpib_user17]

When I use gpib-32.obj it gives this error

Linking...

template_automation.obj : error LNK2001: unresolved external symbol _Ibcnt@0

template_automation.obj : error LNK2001: unresolved external symbol _Ibsta@0

template_automation.obj : error LNK2001: unresolved external symbol _Iberr@0

Debug/template_automation.exe : fatal error LNK1120: 3 unresolved externals

Error executing link.exe.

template_automation.exe - 4 error(s), 0 warning(s)

Linking...template_automation.obj :

error LNK2001: unresolved external symbol _Ibcnt@0template_automation.obj :

error LNK2001: unresolved external symbol _Ibsta@0template_automation.obj :

error LNK2001: unresolved external symbol _Iberr@0Debug/template_automation.exe :

fatal error LNK1120: 3 unresolved externalsError executing link.exe.
template_automation.exe - 4 error(s), 0 warning(s)

[smercurio_fc]

I would suggest either using an older version of NI-488, or a newer compiler. Microsoft has Express versions of the latest compilers available for free.

[gpib_user17]

Can you pls recommend which specific version of NI 488 should I use with VC++ 6.0 ?

thanks

-M.