GPIB access with Mac Lion (10.7.2) ?

Hello,

I like to access an instrument via GPIB in Matlab on Mac OS X 10.7.2 (Lion). I have installed all the necessary soft- and hardware. I am using an NI GPIB-USB-HS interface. I installed both Matlab 32 and 64-bit versions. I cannot access the GPIB with either Matlab version, but with the provided NI software.

I get the following messages:

|>> instrhwinfo('gpib')

ans =

    InstalledAdaptors: {1x0 cell}
       JarFileVersion: 'Version 2.9.0'
|

and

|>> ga = gpib('ni',0,24)

??? Error using ==> gpib.gpib at 150

Unable to load NI GPIB interface. Please check that the necessary drivers are installed on your machine. |

Any idea, what I am doing wrong? The NI support says it is a Mathworks issue...

Answer 1

[Rob Graessle]

GPIB is not supported on Mac OS in the Instrument Control Toolbox. For 64-bit Mac OS, the Instrument Control Toolbox supports serial, Bluetooth, TCP/IP and UDP. 32-bit Mac OS support is no longer provided across the MATLAB platform.

For MATLAB versions R2009a, R2009b and R2010a, GPIB was supported under 32-bit. You can install a 32-bit version of one of these versions of MATLAB onto a 64-bit OS.

[Wilfried]

There are GPIB commands available... so it must be supported? Maybe I misunderstood your post. It is the NI driver, which requires a 32-bit application. Do I need to "enable" somehow the drivers for Matlab?

[Wilfried]

Sorry, now I got!

It is VISA that needs to be used:

instrhwinfo('visa','ni') does the job!

Sorry, I did not get your post right away. I have always been programming under Windows, which still uses the gpib...

Answer 2

[Wilfried]

Thank you for the quick reply.

I do have installed the 32 bit versions of Matlab (R2010a and R2009b). I even re-started OS X in 32 bit mode. I always get the exact same error messages.

I also installed the latest NI drivers for my GPIB interface, which are compatible with 64 bit Lion. But it only runs in 32 bit apps.

Anything else I am missing...?

Answer 3

[Laurens Willems van Beveren]

does this last post I need to install NI-VISA first before the GPIB-USB-HS will appear in TMTOOL in R2012a?

http://joule.ni.com/nidu/cds/view/p/id/2915/lang/en