04 Better Practises

Some general guidelines we found useful working with state machines:

• Do not put “real code” inside the state machine, instead trigger a MHL-case
• Public requests should always go through the MHL

  • Exception: When no data is needed for an action, public requests could directly request a transition from the EHL
• Public requests should always go through the state machine

  • Exception: When they don't trigger some action, e.g. only ask the module for its status, read some values from the shift register etc.
• All data needed is held in the shift register of the MHL

• Place transitions where events occur - don’t go through MHL or EHL “just because”
• Transitions should not be triggered from within the state machine itself
• Transitions can be called via public requests if the SM module is designed that way
• Use the variant input of SM Request Transition.vi only for error information