MATLAB: How to get the list of variables with enumerated data using classdef in a model

simulink

I would like to know how to find all variables using enumerated data in a model.

For example, I want to get all used enumerated data in a model like "Red", "Yellow", "Green" in the following image.

Best Answer

You can use the following codes in order to get all variables with enumerated types used in model blocks.

% Find all variables with enumerated types used in model blocks
usedTypesVars = Simulink.findVars('EnumsReporting','IncludeEnumTypes',true);
% Here, EnumsReporting is the name of the model and
% usedTypesVars is an array of Simulink.VariableUsage objects
% Find indices of enumerated types that are defined by MATLAB files or P-files
enumTypesFile = strcmp({usedTypesVars.SourceType},'MATLAB file');
% Find indices of enumerated types that are defined using the function 
% Simulink.defineIntEnumType
enumTypesDynamic = strcmp({usedTypesVars.SourceType},'dynamic class');
% In one array, represent indices of both kinds of enumerated types
enumTypesIndex = enumTypesFile | enumTypesDynamic;
% Use logical indexing to return the names of used enumerated types
enumTypeNames = {usedTypesVars(enumTypesIndex).Name}'

You can see the above code in the following manual.

- Migrate Enumerated Types into Data Dictionary

http://www.mathworks.com/help/releases/R2015b/simulink/ug/migrate-enumerated-types-into-data-dictionary.html

Related Solutions

MATLAB: How to generate a custom header file for an enumerated class used in Simulink model by Simulink Coder 8.4 (R2013a)

Every enumerated class has four associated static methods, which it inherits from Simulink.IntEnumType. You can optionally override these static methods to customize the behavior of an enumerated type. The methods are:

getDefaultValue — Returns the default value of the enumerated data type.

getDescription — Returns a description of the enumerated data type.

— Specifies a file where the type is defined for generated code.

addClassNameToEnumNames — Specifies whether the class name becomes a prefix in code.

Ues "getHeaderFile" to prevent the declaration of an enumerated type from being embedded in the generated code, allowing you to provide the declaration in an external file, include the following method in the enumerated class's methods section:

function retVal = getHeaderFile()
     retVal = 'filename';
end

Following codes show how to define a Enumerated class that generate a header file called "BasicColors.h" after code generation:

classdef BasicColors < Simulink.IntEnumType
    enumeration
      Red(0)
      Yellow(1)
      Blue(2) 
    end
methods (Static = true)
      function retVal = getDefaultValue()
         retVal = BasicColors.Blue;
       end
       function retVal = getDataScope()
         retVal = 'Exported';
       end
       function retVal = getHeaderFile()
         retVal = 'BasicColors.h';
       end
    end
end

MATLAB: Simulink.NumericType vs. Simulink.AliasType

Greetings,

the difference for these two primarily lies in code generation. For alias types you will be able to see the alias of the type used (the name you specified) in the generated code; instead numeric types will be typed to the native container (their corresponding data type). For example your 'speed' alias type will appear as a variable 'speed' in the generated code, while a numeric type will be typed as the defined data type.

There is a compatibility mode for numeric types that can make them act as alias in the generated code by using the 'isAlias' property set to true. This will cause the numeric type to perform similarly to an alias type in code generation but numeric types cannot reference other alias types.

For the example you mention if you are interested in maintaining the names of these variables in the generated code you should use an alias.

You can find more about the behavior of alias types in code generation here.

Thanks

Best Answer

Related Solutions

MATLAB: How to generate a custom header file for an enumerated class used in Simulink model by Simulink Coder 8.4 (R2013a)

MATLAB: Simulink.NumericType vs. Simulink.AliasType

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