Example of an Implicit Event :: Defining Events and Data (Stateflow User's Guide)

Stateflow User's Guide

Example of an Implicit Event

This example illustrates use of an implicit enter event.

Fan and Heater are parallel (AND) superstates. By default, the first time the Stateflow diagram is awakened by an event, the states Fan.Off and Heater.Off become active. The first time event Fan_switch occurs, the transition from Fan.Off to Fan.On occurs. When Fan.On's entry action executes, an implicit local event is broadcast (i.e., en(Fan.On) == 1). This event broadcast triggers the transition from Heater.Off to Heater.On (triggered by the condition en(Fan.On). Similarly, when the system transitions from Fan.On to Fan.Off and the implicit local event Fan.Off is broadcast, the transition from Heater.On to Heater.Off is triggered.

Referencing Implicit Events Adding Data