LabView question

[Ziaholic]

I had a similar problem to solve, so I whipped up a quick VI to show you what's involved in getting the trigger to set off a timed sequence that lasts longer than the 20 msec DS packet times.

You could simply keep what you've got, and tell the driver to just tap the trigger, and it'd work OK. Your 30 msec requirement is only 2 "cycles" of the standard 20 msec main-loop timer. Tapping the button would pretty much get what you want.

But if you want the SW to take care of it for you, and allow for "driver error", or if you need it to last for 300 msec, then you'll need to get familiar with shift registers.

This isn't exactly cut/pasteable into your code, this is advanced stuff. It'd be safer for you if you created it for yourself ... maybe using the attached pics as a guide.

One of the pics shows the TRUE case, where the trigger has just been sensed as going from FALSE to TRUE. The other shows the FALSE case which gets executed until the driver2 lifts and eventually re-presses the trigger.

I didn't make a third pic, but the unshown case in the FALSE pic has nothing in it at all. While that inner-case is TRUE, you're doing nothing, waiting for the timer to go off.