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How to generate custom signal from txt file using WaveForms sdk


Question

Hello everyone,

I am trying to generate a custom signal whose nodes I have stored in a .txt file using the WaveForms software developer kit (sdk) library in Matlab.

I am having an issue in doing this because the "FDwfAnalogOutNodeFunctionInfo" function does not recognize the constant "funcCustom".

You can find attached below the script I am referring to.

Did someone have the same problem? How did you solve it?

Any help or advice is welcome.

Thanks in advance for the attention.

 

script:

calllib('dwf','FDwfAnalogOutNodeFunctionInfo',phdwf,outputChannel,custSam,funcCustom);
calllib('dwf','FDwfAnalogOutNodeFunctionSet',phdwf,outputChannel,custSam,1);

 

P.S. the variable custSam is used to take the custom signal nodes from the txt file

 

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Hello @attila

thank you very much for your fast and exhaustive response.

Do you mind if I ask you where can I get a specific manual for these functions? I was using the WaveForms SDK Reference Manual where I thought that funcCustom is set with value 7:

 

immagine.png.17801b4ca1b1cdbd41640667b3fa5147.png

 

Best regards.

Have a great week end!

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Hi @cresh,

I checked the WaveForms SDK documentation that comes installed with WaveForms; the value of 30 for funcCustom is specified in the table associated with FDwfAnalogOutNotNodeFunctionInfo function (page 49 of the manual I am reading in the WaveForms installation path). This is also defined in dwf.h ( ../Digilent/WaveFormsSDK/inc/dwf.h on a Windows machine) which you can find by searching for funcCustom.

Let me know if you have any questions.

Thanks,
JColvin

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