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Ext_U and Ext_Y structures created in code when signals are defined as extern (ImportFromFile or ImportedExtern)

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Cynthia Fallon
Cynthia Fallon 2020-8-5
I have multiple models for which the code is generated separately. They all use the same signals defined in a .m file as follows:
x1 = Simulink.Signal;
x1.CoderInfo.StorageClass = 'Custom';
x1.CoderInfo.CustomStorageClass = 'ImportFromFile';
x1.CoderInfo.CustomAttributes.HeaderFile = 'xx_data.h';
I have also tried
x1 = Simulink.Parameter;
and
x1.CoderInfo.StorageClass = 'ImportedExtern';
The appropriate storage is in the xx_data .h file
The generated .h file contains the structures as follows:
typedef struct {
uint32_T x1;
boolean_T y1;
} ExtU_modelx_T;
typedef struct {
boolean_T z1;
} ExtY_modelx_T;
I don't want the signals defined in the .c/.h file, as they are in the xx_data.h file
which is in the modelx_private_types.h file. (#include <xx_data.h>)
This worked correctly in 2008b, which is previous version of these models.
My codegen file had the following parameters set (from 2008b)
set_param(cs,'BlockReduction','on');
set_param(cs,'InlineParams','on');
set_param(cs,'BooleanDataType','on');
set_param(cs,'ConditionallyExecuteInputs','on');
set_param(cs,'ParameterPooling','on');
set_param(cs,'OptimizeBlockIOStorage','on');
set_param(cs,'BufferReuse','on');
set_param(cs,'CombineOutputUpdateFcns','on');
sset_param(cs,'ExpressionFolding','on');
set_param(cs,'ForceParamTrailComments','on');
set_param(cs,'GenCodeOnly','on');
set_param(cs,'GlobalDataDefinition','Auto'); % InSourceFile, InSeparateSourceFile
set_param(cs,'GlobalDataReference','Auto'); %InSourceFile, InSeparateHeaderFile
set_param(cs,'GRTInterface','off');
set_param(cs,'IgnoreCustomStorageClasses','off');
set_param(cs,'IncDataTypeInIds','off');
set_param(cs,'IncHierarchyInIds','off');
set_param(cs,'IncludeFileDelimiter','UseBracket'); %Auto, UseQuote
set_param(cs,'IncludeHyperlinkInReport','off');
set_param(cs,'IncludeMdlTerminateFcn','off');
set_param(cs,'InitialValueSource','Model'); %DataObject
set_param(cs,'InlineInvariantSignals','on');
set_param(cs,'InlinedParameterPlacement','Hierarchical'); %NonHierarchical
set_param(cs,'InlinedPrmAccess','Literals'); %Macros
set_param(cs,'DefaultParameterBehavior','Inlined'); %Macros
set_param(cs,'InsertBlockDesc','on');
set_param(cs,'LocalBlockOutputs','on');
set_param(cs,'LogVarNameModifier','none');
set_param(cs,'MangleLength','1');
set_param(cs,'MatFileLogging','off');
set_param(cs,'CodeInterfacePackaging','Nonreusable function');
set_param(cs,'MultiInstanceErrorCode','Error'); %None, Warning
sset_param(cs,'OptimizeModelRefInitCode','off');
set_param(cs,'ParamNamingRule','None'); %UpperCase, LowerCase, Custom
set_param(cs,'PrefixModelToSubsysFcnNames','on');
set_param(cs,'ShowEliminatedStatement','off');
set_param(cs,'SignalNamingRule','None');
set_param(cs,'ZeroExternalMemoryAtStartup','off');
set_param(cs,'ZeroInternalMemoryAtStartup','off');

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