What is Undefined Symbol

[TonyJ]

I get the following error messages.  See attached file.  I get a total of 15 errors, but for shortness below is the first error.

    Undefined symbol 'niDMM_ConfigureTrigger@16 'referenced in "its_functions.c".  I'm spinning my wheels on this one. 

Tony

[daijoubu]

That is the linker telling you that it cannot find the function niDMM_ConfigureTrigger in any of the .lib or .obj files in your project.  The function call first appears in file its_functions.c.

Do you have NiDMM installed correctly?  Are all the necessary NiDMM files in your project (.lib is probably missing).

[sunnywu]

i met the problem too!

  I'll try this method.

[sunnywu]

it seems that i have installed the 4060 correctly, but i cannot find the nidmm.fp file, what should i do?

and how to  the dmm.lib ?

it shows that " Undefined symbol 'niDMM_init@16 'referenced in "myDmm.c".  "

[Nathan_R]

Hi sunnywu,

The nidmm.fp file should be located at “C:\Program Files\IVI Foundation\VISA\WinNT\NIDMM”. If it is not located there you may not have installed support for LabWindows/CVI when you installed NI-DMM. To fix this you can reinstall the NI-DMM driver and make sure the Labwindows/CVI support is set to install.

Can you open and run one of the NI-DMM examples? Try the example found in LabWindows/CVI by going to Help>>Find Examples..>>Hardware Input and Output>>Modular Instruments>>NI-DMM>>Single Measurements>>DMM Measurements.prj. If this example is not listed then your NI-DMM installation does not have the Labwindows/CVI Examples Installed.

The newest version of NI-DMM can be found here.

Please let me know if you have any questions and take care.

Thanks,

[sunnywu]

To Nathan_R：

    thank you for you suggest, 

     just as you said,I  insatalled the driver and the problem was resolved.

thanks again!