MATLAB: Do I receive an error when I run SIL simulation of a model, which includes a Model block of a Stateflow chart with custom code in Simulink 7.8 (R2011b)

ccodecustomexternalreferencereferencedset_paramsilsimulinkstateflowsymbol [~]unresolved

I have a Simulink model that contains a Model block. The referenced model has a Stateflow chart which calls a custom C function. When I run simulation in SIL mode, I receive the following error:

fatal error LNK1120: 1 unresolved externals

C:\MATLAB32\R2011B\BIN\MEX.PL: Error: Link of '..\..\..\mySfModelRef_customC_msf.mexw32' failed.

Best Answer

The ability to simulate a model that contains Model blocks with custom code in SIL mode has been incorporated in R2010a. For this, you will need to enable the option 'SupportModelReferenceSimTargetCustomCode' for the referenced models by executing the following command on the MATLAB Command Window:

set_param(gcs, 'SupportModelReferenceSimTargetCustomCode', 'on');

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This is a known limitation of Stateflow in all releases since R2007b. To work around the issue, you can insert a Signal Conversion block between the Stateflow chart, Stateflow truth table, or Embedded MATLAB Function block and the root Outport, and set its Output parameter to "Signal copy".

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Edit (actual resolution): It turns out that there is a setting that needs to be enabled on the referenced model(s) in order to have their custom code settings be applied:

http://www.mathworks.com/matlabcentral/answers/95737-why-do-i-receive-an-error-when-i-run-sil-simulation-of-a-model-which-includes-a-model-block-of-a-st

In short, you can run:

set_param(gcs, 'SupportModelReferenceSimTargetCustomCode', 'on');

for the referenced model(s) and it should include the declaration/definition for doubleIt.

Original incorrect response: If you look in "Code Generation->Custom Code" you'll see the same dialog as in "Simulation Target->Custom Code". By default the settings in those two panes are independent. Check the box "Use the same custom code settings as the Simulation Target" and you'll get those settings when generating code.

Hopefully that should resolve it.

Best Answer

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MATLAB: Do I get an error when trying to use a Model block connected to a Merge block when the referenced model contains a Stateflow chart, Stateflow truth table, or Embedded MATLAB function block

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