Programming

Example: Displaying a Message

The following example sets up a timer object that executes a MATLAB command string after 10 seconds elapse. The example creates a timer object, specifying the values of two timer object properties, TimerFcn and StartDelay. TimerFcn specifies the timer callback function. This is the MATLAB command string or M-file that you want to execute when the timer fires. In the example, the timer callback function sets the value of the MATLAB workspace variable stat and executes the MATLAB disp command. The StartDelay property specifies how much time elapses before the timer fires.

After creating the timer object, the example uses the start function to start the timer object. (The additional commands in this example are included to illustrate the timer but are not required for timer operation.)

• t = timer('TimerFcn', 'stat=false; disp(''Timer!'')',... 
                   'StartDelay',10);
  start(t)
  
  stat=true;
  while(stat==true)
    disp('.')
    pause(1)
  end
  

When you execute this code, it produces this output:

• .
  .
  .
  .
  .
  .
  .
  .
  .
  Timer!
  
  delete(t) % Always delete timer objects after using them.
  

Using a MATLAB Timer Object

Creating Timer Objects

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