how to program a loop to switch on or off

[GregFlynn]

Hi all

I have the same code in two while loops controlling four LEDs. I am using a case structure in each loop to switch two conditions (condition A and condition B).

Condition A switches on LED 1  in the first loop and LED 2 in the second

Condition B sitchecs on LED 3 in the first loop and LED 4 in the second.

Each case selector receives a numeric value from a waveform.

Ok, here is what I would ideally like to achieve.

Have an On/Off button (or similar) wired to the loop condition terminal of both loops

If the button is on, loop 1 stops and loop 2 runs. 

If the button if off, loop 2 stops and loop one restarts...i.e I want the button to switch on and off the loops with the program running

Thanks

Greg

[RavensFan]

What you want is a single while loop with a single case structure inside.  A shift register will tell you which case will run on each iteration.

[mikeporter · Accepted solution]

You can't do what you want unless there is a larger structure around the whole thing, but it is easier to just do what RavensFan advises. Unless there is more to the problem than what you have told us, its easier to have one loop that does two things than two loops that do one thing each.

Mike...

[GregFlynn]

Thanks all

Im sure what you said ravensfan is the simpliest, but I kinda have the hang of case structures so I went with your suggestion Mike. 

Thanks again

I am pretty new to Labview, but I have to say, this forum is the business....class