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| R2012a Documentation → Stateflow | |
Learn more about Stateflow |
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| Contents | Index |
• Modeling Logic Patterns and Iterative Loops Using Flow Graphs
• Building Mealy and Moore Charts
• Techniques for Streamlining Chart Design
• Using Actions in Stateflow Charts
• Making States Reusable with Atomic Subcharts
• Saving and Restoring Simulations with SimState
• Using Vectors and Matrices in Stateflow Charts
• How Vectors and Matrices Work in Stateflow Charts
• How to Define Vectors and Matrices
• Scalar Expansion for Converting Scalars to Nonscalars
• How to Assign and Access Values of Vectors and Matrices
• Operations That Work with Vectors and Matrices in Stateflow Action Language
Rules for Using Vectors and Matrices in Stateflow Charts
• Best Practices for Vectors and Matrices in Stateflow Charts
• Using Variable-Size Data in Stateflow Charts
• Using Enumerated Data in Stateflow Charts
Tasks for Defining Enumerated Data in a Chart
Defining an Enumerated Data Type in a File
Adding Enumerated Data to a Chart
Nonprefixed Notation for Enumerated Values
Prefixed Notation for Enumerated Values
Viewing Values of Enumerated Data After Simulation
Benefits of Using Enumerated Types in This Model
How the UserRequest Chart Works
How the CdPlayerModeManager Chart Works
How the CdPlayerBehaviorModel Chart Works
• Modeling Continuous-Time Systems in Stateflow Charts
What Is Continuous-Time Modeling?
When To Use Stateflow Charts for Continuous-Time Modeling
• Using Fixed-Point Data in Stateflow Charts
How Stateflow Software Defines Fixed-Point Data
Rules for Specifying Fixed-Point Word Length
Fixed-Point Context-Sensitive Constants
Tips for Using Fixed-Point Data
Detecting Overflow for Fixed-Point Types
Sharing Fixed-Point Data with Simulink Models
Exploring the Fixed-Point "Bang-Bang Control" Model
Building the Fixed-Point Butterworth Filter
Defining the Model Callback Function
Adding Other Blocks to the Model
Setting Configuration Parameters for the Model
Promotion Rules for Fixed-Point Operations
• Using Complex Data in Stateflow Charts
• Defining Interfaces to Simulink Models and the MATLAB Workspace
Typical Tasks to Define Stateflow Block Interfaces
Where to Find More Information on Events and Data
Setting Properties for a Single Chart
Setting Properties for All Charts in the Model
Defining a Sampled Stateflow Block
Defining an Inherited Stateflow Block
Defining a Continuous Stateflow Block
Defining Function-Call Output Events
Defining Edge-Triggered Output Events
Properties You Can Specialize Across Instances of Library Blocks
Examining the MATLAB Workspace
• Working with Structures and Bus Signals in Stateflow Charts
What Is a Stateflow Structure?
What You Can Do with Structures
• Truth Table Functions for Decision-Making Logic
Stateflow Classic Truth Tables
Selecting a Language for Stateflow Truth Tables
Migration from Stateflow Classic to MATLAB Truth Tables
Methods for Adding Truth Tables to Simulink Models
Adding a Stateflow Block that Calls a Truth Table Function
Entering Truth Table Conditions
Entering Truth Table Decisions
Assigning Truth Table Actions to Decisions
Adding Initial and Final Actions
Debugging a Truth Table During Simulation
Example of an Underspecified Truth Table
How Stateflow Software Generates Graphical Functions for Truth Tables
How Stateflow Software Generates MATLAB Code for Truth Tables
Deleting Text, Rows, and Columns
Selecting and Deselecting Table Elements
• Using MATLAB Functions in Stateflow Charts
• Using Simulink Functions in Stateflow Charts
Advantages of Using Simulink Functions in a Stateflow Chart
Benefits of Using a Simulink Function to Access Simulink Blocks
Benefits of Using a Simulink Function to Schedule Execution of Multiple Controllers
Task 1: Add a Function to the Chart
Task 2: Define the Subsystem Elements of the Simulink Function
Task 3: Configure the Function Inputs
Controlling Subsystem Variables When the Simulink Function Is Disabled
Example of Binding a Simulink Function to a State
Editing a Model to Use a Simulink Function
Code Generation for Stateflow Charts and Truth Table Blocks
Software Requirements for Building Targets
Choosing the Right Procedure for Simulation
Integrating Custom C++ Code for Simulation
Integrating Custom C Code for Nonlibrary Charts for Simulation
Integrating Custom C Code for Library Charts for Simulation
Integrating Custom C Code for All Charts for Simulation
Keep Charts Closed During Simulation
Keep Scope Blocks Closed During Simulation
Use Library Charts in Your Model
Choosing the Right Procedure for Embeddable Code Generation
Integrating Custom C++ Code for Code Generation
Integrating Custom C Code for Nonlibrary Charts for Code Generation
Integrating Custom C Code for Library Charts for Code Generation
Integrating Custom C Code for All Charts for Code Generation
Design Tips for Optimizing Generated Code
Simulation Parameters for Nonlibrary Models
Simulation Parameters for Library Models
Code Generation Parameters for Nonlibrary Models
Code Generation Parameters for Library Models
Example of Using Custom C Code to Define Global Constants, Variables, and Functions
Adding a Stateflow Custom Target to Your Model
Restrictions on Building a Custom Target
Using the Symbol Wizard to Define Chart Symbols
Folder Structure of Generated Files
Code Files for a Simulation Target
Code Files for an Embeddable Target
Code Files for a Custom Target
Basic Workflow for Using Traceability
Examples of Using Traceability
Format of Traceability Comments
• Debugging and Testing Stateflow Charts
Opening the Stateflow Debugger
Setting Breakpoints to Debug Charts
How to Enable Debugging for Charts
Options for Controlling the Debugger
Creating the Model and the Stateflow Chart
Identifying Stateflow Objects in Error Messages
Conflicting Transitions in a Chart
Data Range Violations in a Chart
Watching Stateflow Data in the MATLAB Command Window
Examples of Changing Data Values
Limitations on Changing Data Values
Setting Test Points for Stateflow States and Local Data with the Model Explorer
Using a Floating Scope to Monitor Data Values and State Activity
Workflow for Logging States and Local Data
Enabling Signal Logging and Choosing a Logging Format
Configuring States and Local Data for Logging
Logging Data in Library Charts
• Exploring and Modifying Charts
Viewing Stateflow Objects in the Model Explorer
Editing Chart Objects in the Model Explorer
Adding Data and Events in the Model Explorer
Adding Custom Targets in the Model Explorer
Renaming Objects in the Model Explorer
Setting Properties for Chart Objects in the Model Explorer
Moving and Copying Data, Events, and Targets in the Model Explorer
Label Format for a State-to-State Transition Example
Transitioning from State to State with Events Example
Transitioning from a Substate to a Substate with Events Example
Condition and Transition Actions Example
Condition Actions in For-Loop Construct Example
Condition Actions to Broadcast Events to Parallel (AND) States Example
Cyclic Behavior to Avoid with Condition Actions Example
Default Transition to a Junction Example
Default Transition and a History Junction Example
Labeled Default Transitions Example
Processing Events with an Inner Transition to a Connective Junction Example
Inner Transition to a History Junction Example
If-Then-Else Decision Construct Example
Transitions from a Common Source to Multiple Destinations Example
Transitions from Multiple Sources to a Common Destination Example
Transitions from a Source to a Destination Based on a Common Event Example
Backtracking Behavior in Flow Graphs Example
Event Broadcast Transition Action with a Nested Event Broadcast Example
Stateflow API Object Hierarchy
Getting a Handle on Stateflow API Objects
What Are API Object Properties and Methods?
Creating a New Model and Chart
Creating New Objects in the Chart
Using Dot Notation with Properties and Methods
Using Function Notation with Methods
Displaying the Names of Methods
Displaying Property Subproperties
Displaying Enumerated Values for Properties
Establishing the Parent (Container) of an Object
Finding Objects and Properties
Finding Objects at Different Levels of Containment
Retrieving Recently Selected Objects
Getting and Setting the Properties of Objects
Example of Moving a Subcharted State
Rules for Moving Objects Programmatically
Copying by Grouping (Recommended)
• Blocks
| On this page… |
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You can perform element-wise binary operations on vector and matrix operands of equal dimensions in the following order of precedence (1 = highest, 3 = lowest). For operations with equal precedence, they evaluate in order from left to right.
| Example | Precedence | Description |
|---|---|---|
a * b | 1 | Multiplication |
a / b | 1 | Division |
a + b | 2 | Addition |
a - b | 2 | Subtraction |
a == b | 3 | Comparison, equality |
a != b | 3 | Comparison, inequality |
The multiplication and division operators in Stateflow action language perform element-wise operations, not standard matrix multiplication and division. For more information, see Using MATLAB Functions to Perform Matrix Multiplication and Division.
You can perform element-wise unary operations and actions on vector and matrix operands.
Example | Description |
|---|---|
~a | Unary minus |
!a | Logical NOT |
a++ | Increments all elements of the vector or matrix by 1 |
a-- | Decrements all elements of the vector or matrix by 1 |
You can perform element-wise assignment operations on vector and matrix operands.
Example | Description |
|---|---|
a = expression | Simple assignment |
a += expression | Equivalent to a = a + expression |
a -= expression | Equivalent to a = a - expression |
a *= expression | Equivalent to a = a * expression |
a /= expression | Equivalent to a = a / expression |
 | How to Assign and Access Values of Vectors and Matrices | Rules for Using Vectors and Matrices in Stateflow Charts |  |
Learn how engineers use Stateflow to model state machines in their Simulink models.
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