How to set an array parameter with variable size for simulink model

I want to set an array parameter can be filled by the model user (who is also a developer) in the generated source file (like .h file in C language) and the length of this array is not limited. And then, I can get the size of this array in the model and traverse it.

For example, the model generate a source file as:

const int THE_ARRAY_PARAMETER[] = { 1, 2, 3 };

The model user can filled it, such as:

const int THE_ARRAY_PARAMETER[] = { 10, 20, 30, 40, 50 };

I can get the size of THE_ARRAY_PARAMETER and traverse it in the model.

But I don't know how to set this kinds of array parameter in the model and how to get the size of the array.

Answer 1

[Harsh]

Hi,

You can use “Simulink.Parameter” object to set the value of one or more block parameters in a model. To get or set the size of the “Simulink.Parameter” object you can use the “Dimensions” property.

The following code snippet creates a 1x5 array parameter-

THE_ARRAY_PARAMETER = Simulink.Parameter; 

% Set the value of the parameter (array) 
THE_ARRAY_PARAMETER.Value = [10, 20, 30, 40, 50]; 

% Set the data type 
THE_ARRAY_PARAMETER.DataType = 'int32'; 

% Set the dimensions 
THE_ARRAY_PARAMETER.Dimensions = [1, 5]; % 1x5 array 

Use the following command to open documentation for “Simulink.Parameter” and learn more about it-

doc Simulink.Parameter