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.

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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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