MATLAB: How to locate where inputs and outputs to/from a Stateflow chart are used within the chart

datafind_systemoutportsignalstateflowvalue

I have a large Stateflow chart that has several inputs and outputs. I want to determine where in the chart the outputs are getting assigned. How can I accomplish this?

Best Answer

You can use the FIND utility in Simulink to locate the signals you're interested in. To access this, first ensure that you have the Stateflow chart open in your model. From there, you can either navigate to "Edit -> Find" in the menu bar of your model, or use the keyboard shortcut "Ctrl+F". Then, enter the name of the output signal that you want to find in the dialog box and click "Find". This will show all locations within your Stateflow Chart where the signal name you entered is used, allowing you to highlight all transitions, states, and functions of interest.

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MATLAB: How to view/edit the data of a Stateflow Chart in a Simulink model using command line if the Simulink chart is derived from a custom library in MATLAB 8.0(R2012b)

You can combine the basic Simulink API with the Stateflow API to achieve this from command line. Since the Stateflow chart in the model is linked to a library, in order to be able to make any changes in the data in the chart, you need to disable the link between the block and the library first. You can disable the link using command line and then enable the link and push the changes made in the chart to the library. However, if you just wish to view the data in the Stateflow chart, this can be done without breaking the link. The following two scripts show how both of these tasks can be achived from command line:

The Simulink model 'testapi.slx' and library 'test1.slx' are attached with the solution.

%%Editing Data in a Stateflow chart and pushing the changes to the library block
% Find the Chart in the Simulink Model

cellChart=find_system('testapi','MaskType','Stateflow','Name','myChart');
% Disable the link
set_param(cellChart{1},'LinkStatus','inactive');
% Using stateflow API now to get the stateflow chart data.
rt=sfroot;
m = rt.find('-isa', 'Simulink.BlockDiagram', '-and', ...
      'Name', 'testapi');
ch = m.find('-isa','Stateflow.Chart','-and',...
      'Name','myChart');
chData = ch.find('-isa', 'Stateflow.Data','-and',...
      'Name','u');   
% Now, for example if you want to change the update method of a variable, you can do the following:
set(chData(1),'UpdateMethod','Continuous')
% You can now push the changes back to the library block.
set_param(cellChart{1},'LinkStatus','propagate');
%%Viewing the data in a Stateflow chart which is linked to a library.
   % Find the Chart in the Simulink Model
   hChart=find_system('testapi','MaskType','Stateflow','Name','myChart');
   % Find the full path to the library block to which the chart is linked to
   libBlock=get_param(hChart,'ReferenceBlock');
   % Get the handle to Libary block
   hLib=get(get_param(libBlock{1},'Handle'));
   % Creating a root stateflow object
   rt = sfroot;
   % Find the library model using stateflow API
   m = rt.find('-isa','Simulink.BlockDiagram','-and',...
       'Name',hLib.Parent);
   % Find the library block
   ch = m.find('-isa','Stateflow.Chart','-and',...
       'Name',hLib.Name);
   % Assigning all data contained in the library block to 'chData'
   chData = ch.find('-isa', 'Stateflow.Data');

MATLAB: How can we share a data between simulink and stateflow where the data is not input to stateflow chart

You mean besides as inputs OR parameters? The Data Store Memory block is an option.

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Related Solutions

MATLAB: How to view/edit the data of a Stateflow Chart in a Simulink model using command line if the Simulink chart is derived from a custom library in MATLAB 8.0(R2012b)

MATLAB: How can we share a data between simulink and stateflow where the data is not input to stateflow chart

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