How do I use "setVariable" when running Real-Time Tests with Scripted Iterations on my Speedgoat target?

I’m trying to run automated tests on a Speedgoat target using Simulink Test & Simulink Real-Time (SLRT). I created a Real-Time Test Case in Test Manager to run a parameter sweep with Scripted Iterations using the  TestIteration object's "setVariable" function.

However, when I attempt to override a base workspace global parameter ‘ParamName’ with:

setVariable(testIter,'Name','ParamName','Source','base workspace','Value',1);

The test case fails with an "Invalid model parameter setting" error:

Invalid model parameter setting in test iteration

Similarly, when I try to override a block parameter, e.g., the Pulse Generator ‘Amplitude’, with:

setVariable(testIter,'Name','Amplitude','Source','MyModel/Pulse Generator/Amplitude','Value',1)

The test case fails with an "Invalid parameter" error:

Invalid parameter 'MyModel/Pulse Generator/Amplitude'.

How can I override parameters in my real-time application when using Scripted Iterations?

Answer 1

[MathWorks Support Team]

The errors above occur because the 'Source' argument must be used differently for Real-Time Test Cases, as documented on the "setVariable" help page. Workspace names such as 'base workspace' or 'model workspace' are not valid.

Use the following syntax for Real-Time Tests with Speedgoat:

(1) To override a global parameter, e.g. a Simulink parameter ‘ParamName’ defined in the base or model workspace, you can just use an empty vector for 'Source':

setVariable(testIter,'Name','ParamName','Source','','Value',1);

(2) To override a block parameter, pass the block path as the 'Source' and the parameter as 'Name':

setVariable(testIter,'Name','Amplitude','Source','MyModel/Pulse Generator','Value',1)

Notice that the 'Source' corresponds to the 'Model Element' as shown in the Parameter Overrides table for this use case:

Refer to the "Create Scripted Iterations" section in our Real-Time Testing example for more information:

Test Real-Time Application in Simulink Test