Guidelines for Writing Inlined S-Functions :: Integrating External Code Using S-Functions (Real-Time Workshop®)

Contents

Index

• Getting Started

• Introduction to Real-Time Workshop Technology

• Developing Models for Code Generation

• Defining Data Representation and Storage for Code Generation

• Preparing Models for Code Generation

• Generating Code and Building Executables

• Converting MATLAB Code to C Code

• Integrating External Code With Generated C and C++ Code

• About External Code Integration

Integrating External Code Using Model Configuration Parameters

• Integrating External Code Using Custom Code Blocks

• Integrating External Code Using S-Functions

• Introduction to S-Functions for Code Generation

• Writing Noninlined S-Functions

• Writing Wrapper S-Functions

• Writing Fully Inlined S-Functions

• Automating the Generation of Files for Fully Inlined S-Functions Using Legacy Code Tool

• Writing Fully Inlined S-Functions with the mdlRTW Routine

Guidelines for Writing Inlined S-Functions

• Writing S-Functions That Support Expression Folding

Writing S-Functions That Specify Port Scope and Reusability

Writing S-Functions That Specify Sample Time Inheritance Rules

Writing S-Functions That Support Code Reuse

• Writing S-Functions for Multirate Multitasking Environments

• Build Support for S-Functions

• Setting Up Generated Code To Interface With Components in the Run-Time Environment

• Verifying Generated Code Applications

• Troubleshooting

• Target Language Compiler

Product Limitations Summary

• Configuration Parameters for Simulink Models

• Configuration Parameters for Embedded MATLAB Coder

• Model Advisor Checks

• Release Notes

Learn more about Real-Time Workshop

Guidelines for Writing Inlined S-Functions

Consider using the block property RTWdata (see S-Function RTWdata). This property is a structure of strings that you can associate with a block. The code generator saves the structure with the model in the model.rtw file and makes the .rtw file more readable. For example, suppose you enter the following commands in the MATLAB Command Window:
```
mydata.field1 = 'information for field1';
mydata.field2 = 'information for field2';
set_param(sfun_block, 'RTWdata', mydata);
```
The .rtw file that Real-Time Workshop generates for the block, will include the comments specified in the structure mydata.
Consider using the mdlRTW function to inline your C MEX S-function in the generated code. This is useful when you want to
- Rename tunable parameters in the generated code
- Introduce nontunable parameters into a TLC file

Writing Fully Inlined S-Functions with the mdlRTW Routine

Writing Fully Inlined S-Functions with the mdlRTW Routine

Writing S-Functions That Support Expression Folding

Writing S-Functions That Support Expression Folding

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