how to Automate a button click after X-Seconds to update values

Hi everyone,

I have an issue with MATLAB GUIs that I don't know how to solve. i want to automate the "Push Button" so that after x-Seconds the values off my Variables(Distance traveled, Required_Energy ...) be updated automatically. (The variables are available as Vector in workspace)

basically I want to run the Butto after x-Second automatically without have to click on it.

I was thinking about a Solution with timer but i dont know how to do it.

i will apreciate any Help many thanks Jay

Answer 1

[Geoff Hayes]

Jay - are these variables in your workspace because you are using Simulink? If so, you could create a timer object in the OpeningFcn of your GUI as

handles.timer = timer('Name','MyTimer',               ...
                     'Period',5,                    ... 
                     'StartDelay',1,                 ... 
                     'TasksToExecute',inf,           ... 
                     'ExecutionMode','fixedSpacing', ...
                     'TimerFcn',{@timerCallback,handles.figure1}); 
guidata(hObject,handles);
start(handles.timer);

In the above, we create the timer that will fire every five seconds. We assign a callback, timerCallback, and pass an additional parameter which the handle to the GUI/figure. We then save the updated handles structure and start the timer.

Your callback would then be

 function [] = timerCallback(~,~,guiHandle)
 if ~isempty(guiHandle)
      % get the handles
      handles = guihandles(guiHandle);
      % collect your data from the workspace
      % update the text fields of your GUI using *handles*

      % an example:
      % find the distance traveled
      distTraveled = randi(255,1,1);
      % update the distance traveled text field
      set(handles.textDistanceTraveled,'String',num2str(distTraveled));
 end

You would probably need to use evalin to get your data from the base workspace. textDistanceTraveled is the name/tag for your distance traveled text field. (I suspect that it is quite different in your code.)

Try the above and see what happens! (See also https://www.mathworks.com/matlabcentral/answers/178682-collecting-a-variable-every-two-minutes for a similar problem.)

[Jay Samin]

Hi Geoff,

thank u for the Quick answer :) yes, im getting the variables from Simulink. i will try it and let u know.

thnx again