how to transfer A PushButton Value to Simulink Model ?

IN APP Designer,I put a Pushbutton, In Simulink Model, added a Constant blockes, how to transfer A PushButton Value to Simulink Model ?

thank you a lot!!

Answer 1

[Shlok]

Hi Zhang,

You can attach callbacks in App Designer to pass values from input components to a Simulink model when a "PushButton" is clicked.

Within the app, set up an "enter" callback function that uses “set_param” to update the “Constant” block with the specified value.

Here, through the following steps, I have implemented the same:

1. Added a “Constant” block and a “Display” block, connected them, and saved the model as “sample_model.slx”.

2. In App Designer, created a new app.

3. Added a “Button” with an appropriate name (say, "PushButton") and a “Numeric Edit Field” (say, "Constant Input").

4. Upon right-click on “PushButton” in App Designer, selected “Callbacks > Add PushButtonPushed” callback.

5. In the code editor, added the following code inside the callback function:

function PushButtonPushed(app, event) 
    % ConstantInputEditField is the generated name of ConstantInput in codebase 
    value = app.ConstantInputEditField.Value; 
    % Update the Constant block in the Simulink model 
    set_param('sample_model/Constant', 'Value', num2str(value)); 
end 

6. Run the app, entered a value in the "Constant Input" field, and clicked "PushButton." The “Constant” block in Simulink is updated with the new value.

Hence, using the above-mentioned approach, you can pass the values to the Simulink model from App.

To know more about writing callbacks for GUI in App Designer, you can refer to the following MathWorks Documentation link:

https://www.mathworks.com/help/matlab/creating_guis/write-callbacks-for-gui-in-app-designer.html