Key concept: Finite State Machine (FSM) - QP
https://www.state-machine.com/fsm
The behavior of each Active Object in the QP™ real-time embedded frameworks is specified by means of a modern finite state machine (UML statechart), which is a very effective, elegant and powerful technique of specifying event-driven behavior. Basic Finite State Machines;
DA: 36 PA: 100 MOZ Rank: 65