Real-Time Workshop User's Guide

General Modeling Techniques

The following are techniques that you can use with any code format:

• The slupdate command automatically converts older models to use current features. Run slupdate on old models.
• Directly inline C code S-functions into the generated code by writing a TLC file for the S-function. See the Target Language Compiler Reference Guide for more information on inlining S-functions. Also see Creating Device Drivers for information on inlining device driver S-functions.
• Use a Simulink data type other than double when possible. The available data types are Boolean, signed and unsigned 8-, 16-, and 32-bit integers, and 32- and 64-bit floats. A double is a 64-bit float. See Using Simulink for more information on data types.
• Remove repeated values in lookup table data.
• Use the Merge block to merge the output of function-call subsystems. This block is particularly helpful when controlling the execution of function-call subsystems with Stateflow.

This diagram is an example of how to use the Merge block.

Optimizing the Model for Code Generation

Block Diagram Performance Tuning