Timer function to refresh the data

Hello,

I want to make an application that allows me to load the file, process the data and display on a graph. I would like to refresh the data every 5 seconds, by restarting the "live" function, but I have trouble understanding the "Timer" function.

Do you have any ideas?Thank you in advance.

function LiveButtonPushed(app, event)
           
            %utilisation de la fonction charger
            donnees=charger(app.entrees,app.variables_stockees.conditions_essai.plan);
                
            app.variables_stockees.entrees=app.entrees;
            app.variables_stockees.donnees=donnees;


            %utilisation de la fonction masquer
            masque=masquer(app.variables_stockees);
            app.variables_stockees.masque=masque;

            %calcul
            calcul(app.variables_stockees,app);


            timerObj = timer('TimerFcn', @app.LiveButtonPushed, 'Period', 5);
            start (timerObj);
        end

Answer 1

[Voss]

Make timerObj an app property so that the functions within your app can access it.

properties (Access = private)

timerObj

Create the timer somewhere else besides its own TimerFcn, e.g., in the app's StartupFcn:

function startupFcn(app)

app.timerObj = timer('TimerFcn', @(~,~)app.StartButtonPushed, 'Period', 5, 'ExecutionMode', 'fixedRate');

end

The default 'ExecutionMode' is 'singleShot', which causes the TimerFcn to be executed one time. Since you want the TimerFcn to be executed repeatedly every 5 seconds, you should specify another ExecutionMode, e.g., 'fixedRate'.

Start the timer in some function where it makes sense to do so. If you start it in its own TimerFcn, then you should make sure it's not already running when you try to start it:

if ~strcmp(app.timerObj.Running,'on')

start(app.timerObj)

end

[Thierry Gouzenne]

Thank you very much, this is the first time I use this function, I was completely lost.

[Voss]

You're welcome!