Simulink Mask Port Visibility
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Hello!
I have a masked simulink block which has 3 models with different level of fidelity.
I would like to add a check box that when selected turns on/off the visibility of certain ports that are/are not required in the block depending of the user selection.
I see that in some blocks such as the battery one in the figure. This functionality is already added. The port Ta is activated or deactived as a function of the check box.
Does anyone know who to do this?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/421023/image.png)
Thanks in advance.
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Answers (4)
Katherine May
on 20 Apr 2022
If you're running a custom S-function using a MEXed C-file, you can add the checkbox value to the S-function parameters to send it through to your C file, then selectively enable only the number of ports that you need. Also make sure that accompanying TLC files & port labels will set/grab the correct values from the correct ports.
Like this:
static void mdlInitializeSizes(SimStruct *S) {
boolean usePort = mxGetScalar(ssGetSFcnParam(S, INDEX_USE_PORT)) == 1;
[...]
if(usePort){
ssSetNumInputPorts(S, 1);
ssSetNumOutputPorts(S, 1);
} else {
ssSetNumInputPorts(S, 0);
ssSetNumOutputPorts(S, 0);
}
}
I'm still investigating a solution for when the controlling block is a subsystem containing S-function blocks.
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