Reusable Components in Charts

Define reusable functions and subcharts to simplify chart design

Create templates for common syntactical structures and simplify Simulink^® models by using reusable functions. Graphical functions encapsulate flow charts containing if-then-else, switch-case, for, while, or do-while patterns. Use MATLAB functions to write matrix-oriented algorithms and call MATLAB functions for data analysis and visualization. Simulink functions call Simulink subsystems directly to streamline design and improve readability. Truth tables represent combinational logic for decision-making applications such as fault detection and mode switching. Reuse state components in multiple charts by using atomic subcharts. Incorporate custom code written in C or C++ to augment the capabilities of your Stateflow^® chart.

Frequently Viewed Topics

Graphical Functions
Create flow charts containing logic and iterative loop patterns
MATLAB Functions
Write matrix-oriented algorithms for data analysis and visualization
Simulink Functions
Call Simulink function-call subsystems directly to streamline design
Truth Tables
Represent combinational logic for decision-making applications
Atomic Subcharts
Encapsulate modal logic in reusable subcomponents
Custom Code
Include custom code for simulation and code generation

Related Information

Simulink Functions

Simulink Subsystems as States

Featured Examples

Share Functions Across Simulink and Stateflow

Call functions defined in a Simulink model from a Stateflow chart.

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Home Climate Control Using the Truth Table Block

Models a home climate control system by using a Truth Table block. Homes rarely maintain a constant climate without a climate control system in place, and occupants usually rely on automated systems to maintain a desired climate. Because temperature and humidity are dynamic, maintaining desired conditions requires consistent monitoring and adjusting. To model how a home activates different subsystems that maintain a desired climate, this model uses a Truth Table block to manage logical decision making.

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Model a Power Window Controller

Design an automotive power window system by using local events.

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Model an Elevator System by Using Atomic Subcharts

Model a two-car elevator system by using linked atomic subcharts in Stateflow®. The elevator system consists of a Simulink® model and a user interface (UI). The model contains two Stateflow charts: Elevator System models the core logic that delegates incoming requests from the UI to the nearest available elevator car. This chart contains a pair of atomic subcharts that implement identical logic for the cars.

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