- Open your Simulink model and navigate to the subsystem that contains your S-Function.
- Right-click on the subsystem block and select Mask -> Create Mask.
- In the Mask Editor, go to the Parameters & Dialog tab.
- Add parameters that you want to pass to the S-Function, such as IP address and sample time. Set the Name, Type, and Prompt for each parameter. The 'Name' is used in the MATLAB code to access the parameter value.
Level-2 S-Function in Simulink subsystem
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I'm working with a Level-2 S-Function in a Simulink subsystem and I would like to configure some parameters (IP, sample time) from the subsystem mask so that I don't have to edit the Matlab code on every change, defining them into the S-Function as a variable. How can these parameters be passed to the S-Function?
The error I get is: "Cannot access data in 'simulink_pr/Subsystem/ '. The probable cause of this error is accessing data that is available only when simulation is running"
Thank you very much
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Answers (1)
Anshuman
on 20 Jun 2024
Hello,
To configure parameters such as IP address and sample time from a Simulink subsystem mask into a Level-2 MATLAB S-Function, you need to use mask parameters. These mask parameters allow you to change the S-Function's behavior without modifying the MATLAB code directly for each change.
In your Level-2 MATLAB S-Function, you can access these parameters using the 'Simulink.Parameter' object or directly within the S-Function code.
blockIP = get_param(block.BlockHandle, 'ip_parameter_name');
blockSampleTime = str2double(get_param(block.BlockHandle, 'sample_time_parameter_name'));
After retrieving the parameters, you can use these values throughout your S-Function.
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