How do I change the properties of an Enum stored in a data dictionary programmatically?

Hello,

I have a data dictionary an I defined several enums inside it through the Model Explorer window.

Now I want to change some of the properties of those enums programatically through MATLAB code (for example: based on some configuration for the embedded coder). Is there any way to do it? I coulnd't find any relevant documentation regarding this issue, Only how to add or remove enums from data dictionary.

I tried to do the following thing but it didn't work:

myDictionaryObj = Simulink.data.dictionary.open(ModuleName);
dDataSectObj = getSection(myDictionaryObj,'Design Data');
entriesEnum = find(dDataSectObj,'-value','-class','EnumTypeDefinition');

I Specifically want to progarmatically change the enum settings in the 'Code Generation' tab: Data Scope and Header file.

Any help will be much appreciated.

Thanks

Answer 1

[Fangjun Jiang]

Follow this?

https://www.mathworks.com/help/simulink/ug/store-data-in-dictionary-programmatically.html

[Daniel Purits]

Thanks. but it doesn't mention specifically how to modify entries of class enum. I tried the above but it didn't work

[Fangjun Jiang]

appendEnumeral

removeEnumeral

https://www.mathworks.com/help/simulink/slref/simulink.data.dictionary.enumtypedefinition.html

[Daniel Purits]

Thank you but that's not what I was looking for. I eddited my question. I specifically want to pragramatically chage the settings in the 'Code Generation' tab in the enum settings.

[Fangjun Jiang]

That was a problem. Several years ago, I have requested the Mathworks to hve full SLDD API to access all data object property values. But so far in R2024a, it still just has getValue() and setValue() methods.

https://www.mathworks.com/help/simulink/slref/simulink.data.dictionary.enumtypedefinition.html

I can suggest this workarounds:

1. Create the enumeral class object, set the .DataScope and .HeaderFile property and then import it to SLDD.

The other workaround Simulink.data.evalinGlobal('ModelName','a=11;') works for an existing ordinary variable in the SLDD to change value, but it does not work for an existing enumeral class such as Simulink.data.evalinGlobal('ModelName','myColors.DataScope="Exported";')

https://www.mathworks.com/help/simulink/slref/simulink.data.evalinglobal.html

[Daniel Purits]

Understood. Thanks @Fangjun Jiang for your anwer!