Stateflow

Overview Stateflow Interfaces

Each Stateflow block interfaces to its Simulink model. Take an overview look at Stateflow interfaces to Simulink and MATLAB with the following topics:

• Stateflow Interfaces -- Lists the interfaces that Stateflow has to Simulink blocks, MATLAB data, and external code sources.
• Typical Tasks to Define Stateflow Interfaces -- Describes the tasks used to define Stateflow interfaces.
• Where to Find More Information on Events and Data -- Gives you references to further information on defining Stateflow interfaces in the Stateflow documentation.

Stateflow Interfaces

Each Stateflow block interfaces to its Simulink model. Each Stateflow block can interface to sources external to the Simulink model (data, events, custom code). Events and data are the Stateflow objects that define the interface from the Stateflow block's point of view.

Events can be local to the Stateflow block or can be propagated to and from Simulink and sources external to Simulink. Data can be local to the Stateflow block or can be shared with and passed to the Simulink model and to sources external to the Simulink model.

The Stateflow interfaces includes the following:

• Physical connections between Simulink blocks and the Stateflow block
• Event and data information exchanged between the Stateflow block and external sources
• Graphical functions exported from a chart

• See Exporting Graphical Functions for more details.

• The MATLAB workspace

• See MATLAB Functions and Data for more details.

• Definitions in external code sources

Typical Tasks to Define Stateflow Interfaces

Defining the interface for a Stateflow block in a Simulink model involves some or all the tasks described in the following topics:

• Specify the update method for a Stateflow block in a Simulink model.

• This task is described in Setting the Stateflow Block Update Method.

• Define the Output to Simulink and Input from Simulink data and events that you need.

• See the topic Adding Input or Output Data and Events to Charts.

• Add and define any nonlocal data and events your Stateflow diagram must interact with.
• Define relationships with any external sources.

• See the topics MATLAB Workspace Interfaces and Interface to External Sources.

The precediing task list could be a typical sequence. You might find that another sequence better complements your model development.

See Implementing Interfaces in Stateflow to Simulink for examples of implemented interfaces to Simulink.

Where to Find More Information on Events and Data

The following references are relevant to defining the interface for a Stateflow Chart block in Simulink:

• Defining Input Events
• Defining Output Events
• Importing Events
• Exporting Events
• Defining Input Data
• Defining Output Data
• Importing Data
• Exporting Data

Defining Stateflow Interfaces

Setting the Stateflow Block Update Method