GPIB access with Mac Lion (10.7.2) ?

Question

Wilfried 2012-1-16

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/26211-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...

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Answer 1

Rob Graessle 2012-1-16

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https://ww2.mathworks.cn/matlabcentral/answers/26211-gpib-access-with-mac-lion-10-7-2#answer_34223

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.

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Wilfried 2012-1-16

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 2012-1-16

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...

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Answer 2

Wilfried 2012-1-16

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/26211-gpib-access-with-mac-lion-10-7-2#answer_34225

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...?