Exporting Events to Stateflow External Code :: Defining Events and Data (Stateflow User's Guide)

Stateflow User's Guide

Exporting Events to Stateflow External Code

Stateflow allows a Stateflow machine to export events. Exporting events enables external code to trigger events in the Stateflow machine.

Exported events can be parented only by a Stateflow machine. To export an event, add the event to the Stateflow machine and set its Scope property to Exported.

Note You must use the Model Explorer to add exported events to a Stateflow machine. For information on adding events in the Model Explorer, see Adding Events in the Model Explorer.

The Stateflow code generator generates a function for each exported event. The C prototype for the exported event function has the form

```
void external_broadcast_EVENT()
```

where EVENT is the name of the exported event. External code built into a target can trigger the event by invoking the event function. For example, suppose you define an exported event named switch_on. External code can trigger this event by invoking the generated function external_broadcast_trigger_on. See Exported Events for an example of how to trigger an exported event.

See Exported Events for an example of a Stateflow event exported to Stateflow external code.

Sharing Events with Stateflow External Code Importing Events from Stateflow External Code