MATLAB: How to check syntax error in state flow chart

MATLABmodel advisorstate actionsstateflowsyntax check

Hello All,

I would like to check syntax errors in state flow state chart. As you see below, I have called state which is State_name, Inside this state I have different actions. If you see state_action2 = 0 missed by following semi colon(;) and state_action3 is not within state area.

How can I check state actions line by line and syntax errors by using m-script/commands?

Any help would be appreciated..

Best Answer

I give you a small code (not optimize and without check...). The code give the "txt" variable which is the text from a stateflow state and then I put each line in a cell of the cell array "Line".

nlChar = findstr(txt, 10);
Line{1,1} = txt(1:nlChar(1));
for i = 2:length(nlChar)
  Line{i,1} = txt(nlChar(i-1)+1:nlChar(i));
end
Line{i+1,1} = txt(nlChar(i):end);

Then, when you have this cell aray, you just have to make your check on each cells.

Related Solutions

MATLAB: Rapid Stateflow.Transition finding

You can do that using a simple MATLAB script using the Stateflow API. Find the Stateflow API below: http://www.mathworks.com/help/stateflow/programmatic-manipulation.html

Here is a simple example that looks for transitions between the states "upshifting" and "steady_state". To run the example, open the model sf_car and run the following code:

rt = sfroot;
transArray = rt.find('-isa','Stateflow.Transition');
len_transarray = length(transArray);
x = zeros(len_transarray,1);
y = zeros(len_transarray,1);
for i = 1: len_transarray
        if ~isempty(strfind(get(get(transArray(i),'Source'),'LabelString'),'upshifting'))
            x(i) = i;
        end
        if ~isempty(strfind(get(get(transArray(i),'Destination'),'LabelString'),'steady_state'))
            y(i) = i;
        end
end
output = transArray(find(x>0 & y > 0))

MATLAB: How to find Stateflow chart using API’s

I had a similar need but couldn't find a way. It was confirmed by the Mathworks tech support that there is no direct way to find the Stateflow chart objects inside a linked library block in a model. I ended up writing the following code. It was verified in many models, including some models with nested library links.

% Updating the model is needed to make sure libraries, if any, are loaded
% There might be error updating the model, but the error are non-critical
% for this operation
try
   fprintf(1,'Need to update the model to load all libraries.\n');
   set_param(Model,'SimulationCommand','Update');
catch %#ok<CTCH>
   fprintf(1,'There are errors updating the model. Ignore ...');
end
ChartRoots=libinfo(Model);
ChartRoots=[{Model},{ChartRoots.Library}];
sfrt=sfroot;
ChartObj=sfrt.find('-isa','Stateflow.Chart');
Index=ismember(bdroot(get(ChartObj,'Path')),ChartRoots);
ChartObj=ChartObj(Index);

Best Answer

Related Solutions

MATLAB: Rapid Stateflow.Transition finding

MATLAB: How to find Stateflow chart using API’s

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