Simulink Matlab Function DAQ Pulse Generation Instance Class

Laura 2022-10-10

编辑：Laura 2022-10-10

Hi, I need to generate a PWM signal and write it into a NI USB-6341. If I run the program Generate Pulse Width Modulated Signals Using NI Devices - MATLAB & Simulink - MathWorks América Latina in Matlab, it works. But I have a larger program on Simulink, so I am trying to create a Matlab Function there. Thank you!

Mario Malic 2022-10-10

在 MATLAB Online 中打开

Hey,

You need to set the frequency of the channel, not the device.

ch.Frequency = 5e-5;

Laura 2022-10-11

Thank you Mario. Sorry, I should have strated that I tried with those same commands (as indicated on this link Generate Pulse Width Modulated Signals Using NI Devices - MATLAB & Simulink - MathWorks América Latina) and getting this other error as well:

Mario Malic 2022-10-11

在 MATLAB Online 中打开

The InitialDelay property does not exist for your output channel ch. Here is a function that can show you what properties are available for your channel in the table.

DisplayProperties(ch);

function objectTable = DisplayProperties(object)
    % Get fields, their values and put them in UITable
    fields = fieldnames(object);          
    propVals = cell(length(fields), 1);
    for ii = 1:length(fields)
        propVals{ii,1} = object.(fields{ii,1});
    end
    objectTable = table(fields, propVals);
    uiFig = uifigure();
    uitable(uiFig, "Data", objectTable);
end

Laura 2022-10-11

Great! Thank you Mario, I was looking for that type of function to check the available properties.

Simulink Matlab Function DAQ Pulse Generation Instance Class

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