MATLAB: Pass a function in a .m file as a parameter to StartFcn callback property.

callback function propertysimulinkstartfcn

I have a .m file in which there are number of functions. Now out of those functions i want one particular function to execute automatically when the simulation starts. For that to happen i found out that StartFcn property has to be used. But i do not know how to pass that particular function to StartFcn property.

Kindly help.

Best Answer

You can either do it by command-line:

   >> set_param('modelname', 'StartFcn', 'matlabfcntorun')

Or to do it interactively, right click on the model, select "Model Properties" and in the window that opens, select the Callbacks tab and then choose StartFcn in the right panel. On the corresponding left panel, you can enter whatever MATLAB code you want to run.

Related Solutions

MATLAB: When is the StartFcn executed when I use STARTAT with the TIMER object in MATLAB 7.6 (R2008a)

STARTAT function is used to delay the execution of the TimerFcn. When the line with the STARTAT command is reached, the following sequence of events occurs:

1. The timer object's property 'StartDelay' is set to the difference between the second argument of STARTAT function and 'now'. In this example, the 'StartDelay' property will be set to 3 seconds. 'StartDelay' property of a timer object specifies the delay, in seconds, between the start of the timer and the first execution of the function specified in TimerFcn.

2. StartFcn is executed. In this example, the 'Executing StartFcn' line appears in the command prompt.

3. The TimerFcn execution is delayed until the 'StartDelay' time has elapsed. At this moment the code proceeds to execute further, displays 'End of simple timer function' and returns control to the command line. When the amount of time equal to 'StartDelay' has elapsed, the TimerFcn is executed and the 'Executing TimerFcn' message is displayed.

For an overview of the Timer object callback functions please refer to the documentation by executing the following in the MATLAB command prompt:

web([docroot '/techdoc/matlab_prog/f9-39541.html#f9-42494'])

MATLAB: How to get the timer object from within the timer’s callbacks, such as ‘TimerFcn’ and ‘StopFcn’

By default, the timer function callbacks pass the timer object as the first argument, and the event data associated with the callback as the second argument. Therefore, you always have access to the timer object from within its callback.

For more information and to see an example of how to define a timer callback, refer to the "Creating Callback Functions" section of the following URL:

 <http://www.mathworks.com/access/helpdesk/help/techdoc/index.html?/access/helpdesk/help/techdoc/matlab_prog/f9-39541.html>

Best Answer

Related Solutions

MATLAB: When is the StartFcn executed when I use STARTAT with the TIMER object in MATLAB 7.6 (R2008a)

MATLAB: How to get the timer object from within the timer’s callbacks, such as ‘TimerFcn’ and ‘StopFcn’

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