db_0127: Limitation on MATLAB commands in Stateflow blocks

Since R2020a

Guideline Publication

Control Algorithm Modeling Guidelines - Using MATLAB^®, Simulink^®, and Stateflow^®

• Version 6.0

Sub ID Recommendations

• NA-MAAB — a, b

• JMAAB — a, b

MATLAB Versions

All

Rule

Sub ID a

Built-in MATLAB functions shall not be used in Stateflow blocks.

Supplement

Applicable for C charts

Custom Parameter

Not Applicable

Example — Correct

MATLAB commands are not used in Stateflow blocks.

Example — Incorrect

A MATLAB command is used in the Stateflow block.

Sub ID b

When a built-in MATLAB function is used in Stateflow blocks, it shall be accessed only by using MATLAB Function.

Supplement

Applicable for C charts

Custom Parameter

Not Applicable

Example — Correct

The MATLAB command is accessed by using the MATLAB Function block.

Example — Incorrect

A MATLAB Function block is not used for a MATLAB command.

Rationale

Sub ID a:

• Not all built-in MATLAB functions are supported for code generation. As a result, code may not be generated for these unsupported MATLAB functions.

Sub ID b:

• Not all built-in MATLAB functions are supported for code generation. As a result, code may not be generated for these unsupported MATLAB functions.

• Readability improves when C and MATLAB action languages are described separately.

Verification

Model Advisor check: Check for MATLAB expressions in Stateflow charts (Simulink Check)

Last Changed

R2024b