Hi, I am not quite sure, if I have understood your question correctly. But you want to do some stuff in Go_backtoStatemachine() dependent on your active state? My solution for this is to generate another event (EventExecute) which does not trigger a state transition but an action. The statemachine itself handles only transitions if events happen for you, it is not a task-switching scheduler like an operating system is. Regards, Sven On 03/05/2012 02:22 AM, keithzz wrote:
newbi question pleasee bare with me as Im struggling with this.
I want to use boost msm state machine but i am having a hard time imagining how it works. Let say we only have 2 states (s1, s2) and to go from s1 to s2 you need event e1 to be fired and to bo back you need another one e2. e1 and e2 can only be fired from within s1 and s2 respectively.
Now in main() I start by starting the statemachine (start()) then ill have a while loop that every 1 min will go back to the state machine but have to pick up from where it left.i.e.
main() { MSM.start(); //start state machine
while (a_condition) { ProcessInputsfromIO(); Go_backtoStatemachine(); //how can i do this? delay(1min) } MSM.stop(); } So basically when a state finishes executing, the statemachine will exit, then ill have a delay of 1 minutes, then the while loop will need to take me back to the state I was before I exit, or I think that's how we should implement a state machine.
Is what I am asking for out of the ordinary? If yes then how do people implement a non-blocking state machine? if no, then how can I implement Go_backtoStatemachine()?
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