How to make a Simulink Parameter non-tunable to avoid the following error: Parameter 'InputPortWidth' of '' is non-tunable but refers to tunable variables (NUM_OF_FAULT_EVENTS (base workspace))

Question

Joseph McDaniel 2019-6-25

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/468873-how-to-make-a-simulink-parameter-non-tunable-to-avoid-the-following-error-parameter-inputportwidth

评论： Fangjun Jiang 2023-10-25

I have the following defined in my base workspace by a .m file at startup:

NUM_OF_FAULT_EVENTS = Simulink.Parameter;
NUM_OF_FAULT_EVENTS.Value = 35;
NUM_OF_FAULT_EVENTS.CoderInfo.StorageClass = 'Custom';
NUM_OF_FAULT_EVENTS.CoderInfo.Alias = '';
NUM_OF_FAULT_EVENTS.CoderInfo.Alignment = -1;
NUM_OF_FAULT_EVENTS.CoderInfo.CustomStorageClass = 'Define';
NUM_OF_FAULT_EVENTS.CoderInfo.CustomAttributes.HeaderFile = '';
NUM_OF_FAULT_EVENTS.CoderInfo.CustomAttributes.ConcurrentAccess = false;
NUM_OF_FAULT_EVENTS.CoderInfo.Alias = '';
NUM_OF_FAULT_EVENTS.CoderInfo.Alignment = -1;
NUM_OF_FAULT_EVENTS.Description = 'The number of fault events';
NUM_OF_FAULT_EVENTS.DataType = 'uint8';
NUM_OF_FAULT_EVENTS.Min = [];
NUM_OF_FAULT_EVENTS.Max = [];
NUM_OF_FAULT_EVENTS.DocUnits = '';

This Parameter is used to define the "Input port size:" of a Selector block with the following options selected:

Number of input dimensions: set to 1

Index Mode: set to "Zero-based"

Index Option: set to "Index vector(port)"

Input port size: set to NUM_OF_FAULT_EVENTS

I get the following error when I build the model for code generation:

Invalid setting in '<model path>/Selector' for parameter 'InputPortWidth'.

Caused by:

Parameter 'InputPortWidth' of '<model path>/Selector' is non-tunable but refers to tunable variables (NUM_OF_FAULT_EVENTS (base workspace))

My question is:

How do I force the the NUM_OF_FAULT_EVENTS parameter to be non-tunable in my base workspace using the .m file when the model project is loaded?

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omar Elkawokgy 2020-7-27

As far as I know you should only define it as variable not a Simulink parameter

NUM_OF_FAULT_EVENTS = uint8(35);

Also do not forget to set Configuration Parameters => Optimization => Signals and Parameters => Default parameter behavior: "Inline"

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Answer 1

Fangjun Jiang 2020-7-27

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/468873-how-to-make-a-simulink-parameter-non-tunable-to-avoid-the-following-error-parameter-inputportwidth#answer_471559

change the storage class to "auto".

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ruili 2023-10-25

It's work , but do you know reason?

Fangjun Jiang 2023-10-25

"InputPortWidth" should be non-tunable. It is possible to use CustomStorageClass "Define" to define it but the setting seems to be incomplete. For example, the usually needed header file is empty. Use 'auto' storage class is the easiest solution.

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