Help with state machine and event structure

[DanPHS]

I have a state machine that is controlled by button presses.  A single button causes a state change, but the state to move to depends on which state you're currently in.  In other words, if I'm in state X, pressing button A will move to state Y.  If I'm in state Y, pressing the same button A will move to state Z.

What is the easiest way to do this? I tried using an event structure for this but haven't been able to get it working.

Thanks!

[TiTou]

Using a state machine with an event structure is often a nice way to go !

If the next case depends on a combination of the previous and another event you can keep track of the previous case using a "dropped down shift register" see pics below 😉



Hope this helps

Message Edité par TiTou le 07-10-2006 02:24 PM

[DanPHS]

Could you elaborate anymore on how to set this up?  You can't have an event handler in each state of the state machine...

[TiTou]

of course... a bit of code is worth a long speech, so have a look at the example attached. I just started from NI template "Standard State Machine" and added a case called "user Interface" in which I wait for an event and then see what was the previous event to decide where I shall go next 😉