How to create an ExportedDefine global variable in Simulink for Code Generation?
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For Code Generation from Matlab code the storage class 'ExportedDefine' allows to make a simulink variable appear in generated C-code as
#define var_name var_value
as described here: https://de.mathworks.com/help/ecoder/ref/coder.storageclass.html.
Is there a way to do this for a (constant) variable when generating code from a Simulink model?
Thanks for your help!
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Fangjun Jiang
2024-1-2
移动：Fangjun Jiang
2024-1-2
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Create a Simulink.Parameter, specify the storage class as "Define".
2 个评论
Felix
2024-1-3
Thank you!
By creating a Simulink.Parameter in the base workspace like this:
z = Simulink.Parameter;
z.Value = uint32(10);
z.CoderInfo.StorageClass = 'Custom';
z.CoderInfo.CustomStorageClass = 'Define';
and referencing the parameter in the generated model like this:
I get a #define line in the generated code:
#define z 10U
Because I do not use the Parameter in the model itself but rather want to use it in other C-files, I need to add to the signal Param_z to the code mappings for the Parameter to be defined. Is there a more elegant way to do this?
Fangjun Jiang
2024-1-3
Your asked "Is there a way to do this for a (constant) variable when generating code from a Simulink model?"
If just want to have the .h file to do the #define, why not create the .h file directly, manually or create a script to write the text file.
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