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R2012a Documentation → Stateflow
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Contents

Index

• Getting Started

• Product Description

Key Features

What Does a Stateflow Chart Look Like?

How Stateflow Software Works with Simulink Software

Basic Tutorial for Modeling Event-Driven Systems

• Installing Stateflow Software

Installation Instructions

Prerequisite Software

Product Dependencies

Setting Up Your Own Target Compiler

Using Stateflow Software on a Laptop Computer

Related Products

The Stateflow Chart

How the Stateflow Chart Works with the Simulink Model

A Look at the Physical Plant

Running the Model

• Implementing the Interface with Simulink

Build It Yourself or Use the Supplied Model

Design Considerations for Defining the Interface

Adding a Stateflow Block to a Simulink Model

Defining the Inputs and Outputs

Connecting the Stateflow Block to the Simulink Subsystem

• Implementing the States to Represent Operating Modes

Build It Yourself or Use the Supplied Model

Design Considerations for Defining the States

Adding the Power On and Power Off States

Adding and Configuring Parallel States

Adding the On and Off States for the Fans

• Implementing State Actions

Build It Yourself or Use the Supplied Model

Design Considerations for Defining State Actions and Variables

Writing an Entry Action

Writing a During Action

• Adding the Transitions

Build It Yourself or Use the Supplied Model

Design Considerations for Defining Transitions Between States

Drawing the Transitions Between States

Adding Default Transitions

Adding Conditions to Guard Transitions

Adding Events to Guard Transitions

• Implementing the Triggers

Build It Yourself or Use the Supplied Model

Design Considerations for Triggering Stateflow Charts

Defining the CLOCK Event

Connecting the Edge-Triggered Events to the Input Signals

• Setting Simulation Parameters and Breakpoints

Prepare the Chart Yourself or Use the Supplied Model

Checking That Your Chart Conforms to Best Practices

Setting the Length of the Simulation

Configuring Animation for the Chart

Setting Breakpoints to Observe Chart Behavior

Simulating the Air Controller Chart

• Debugging Common Modeling Errors

Debugging State Inconsistencies

Debugging Data Range Violations

• User's Guide

• Stateflow Chart Concepts

• Stateflow Chart Notation

• Stateflow Chart Semantics

• Creating Stateflow Charts

• Modeling Logic Patterns and Iterative Loops Using Flow Graphs

• Building Mealy and Moore Charts

• Techniques for Streamlining Chart Design

• Defining Data

• Defining Events

• Using Actions in Stateflow Charts

• Making States Reusable with Atomic Subcharts

What Is an Atomic Subchart?

When to Use Atomic Subcharts

• Benefits of Using Atomic Subcharts in a Stateflow Chart

Comparison of Modeling Methods

Comparison of Simulation Methods

Comparison of Editing Methods

Comparison of Code Generation Methods

• Restrictions for Converting to Atomic Subcharts

Rationale for Restrictions

Access to Data, Graphical Functions, and Events

Use of Event Broadcasts

Access to Local Data with a Nonzero First Index

Use of Machine-Parented Data

Use of Strong Data Typing with Simulink Inputs and Outputs

Use of Output State Activity

Use of Supertransitions

• Converting to and from Atomic Subcharts

Converting a State or Subchart to an Atomic Subchart

Converting an Atomic Subchart to a State or Subchart

Restrictions for Converting an Atomic Subchart to a State or Subchart

• Mapping Variables for Atomic Subcharts

Why Map Variables for Atomic Subcharts?

How to Map Variables in an Atomic Subchart

Mapping Input and Output Data for an Atomic Subchart

Mapping Data Store Memory for an Atomic Subchart

Mapping Parameter Data for an Atomic Subchart

Mapping Input Events for an Atomic Subchart

• Generating Reusable Code for Unit Testing

How to Generate Reusable Code for Linked Atomic Subcharts

How to Generate Reusable Code for Unlinked Atomic Subcharts

• Reusing Utility Functions Across Multiple Models

Rationale for Using Atomic Subcharts

How to Enable Reuse of Utility Functions

Example of Reusing a Timer Function Multiple Times

Rules for Using Atomic Subcharts in Stateflow Charts

• Tutorial: Reusing a State Multiple Times in a Chart

Ways to Use This Tutorial

Goal of the Tutorial

Editing a Model to Use Atomic Subcharts

Running the New Model

Propagating a Change in the Library Chart

• Tutorial: Reducing the Compilation Time of a Chart

Goal of the Tutorial

Editing a Model to Use Atomic Subcharts

• Tutorial: Dividing a Chart into Separate Units for Editing

Goal of the Tutorial

Editing a Model to Use Atomic Subcharts

• Tutorial: Generating Reusable Code for Unit Testing

Goal of the Tutorial

Converting a State to an Atomic Subchart

Specifying Code Generation Parameters

Generating Code for Only the Atomic Subchart

• Saving and Restoring Simulations with SimState

• Using Vectors and Matrices in Stateflow Charts

• Using Variable-Size Data in Stateflow Charts

• Using Enumerated Data in Stateflow Charts

• Modeling Continuous-Time Systems in Stateflow Charts

• Using Fixed-Point Data in Stateflow Charts

• Using Complex Data in Stateflow Charts

• Defining Interfaces to Simulink Models and the MATLAB Workspace

• Working with Structures and Bus Signals in Stateflow Charts

• Stateflow Design Patterns

• Truth Table Functions for Decision-Making Logic

• Using MATLAB Functions in Stateflow Charts

• Using Simulink Functions in Stateflow Charts

• Building Targets

• Debugging and Testing Stateflow Charts

• Exploring and Modifying Charts

• Semantic Rules Summary

• Semantic Examples

Glossary

• Using the API

• API Object Reference

• API Object Properties and Methods

API Method Reference

• Blocks

• Functions

Examples

• Release Notes

Making States Reusable with Atomic Subcharts

Using Bind Actions to Control Function-Call Subsystems

What Is an Atomic Subchart?

Free Stateflow Interactive Kit

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