Pretriggered DAQ Stop

[Crocker84]

Hello,

1.  I am using a pretriggered DAQ task (PF Line on a 9178), to record analog samples with a 9205.

2.  I am only collecting a finite number of samples.

3.  I want to do this over and over again for all of eternity.

So here is the question.  My read task is in a while loop (hence eternity).  I want the user to stop the program periodically, preferably with a stop button.  What is a clever way to let the user stop the program with a button, without triggering the task again.  FYI, I get an error if I set a timeout for the DAQ read.  I have attached my code.

[John_P1]

I suggest using DAQmx events.  The "done" event should be generated when the last post-trigger sample is acquired.  It might look something like this:

Best Regards,