Key Features

  Installation

  Sharing Fixed-Point Models

  Demos

  Introduction

  Selecting a Measurement Scale

  Example: Selecting a Measurement Scale

  Configuring Blocks with Fixed-Point Output

  Configuring Blocks with Fixed-Point Parameters

  Passing Fixed-Point Data Between Simulink Models and the MATLAB Software

  Automatic Data Typing Tools

  Code Generation Capabilities

  About This Example

  Block Descriptions

  Simulations

  Data Types and Scaling in Digital Hardware

• Fixed-Point Numbers

• Floating-Point Numbers

  Fixed-Point Arithmetic Operations

• Precision

• Range

• Recommendations for Arithmetic and Scaling

• Parameter and Signal Conversions

• Rules for Arithmetic Operations

  Conversions and Arithmetic Operations

• Realizing Fixed-Point Digital Filters

• Targeting an Embedded Processor

• Canonical Forms

• Preparation for Fixed-Point Conversion Using the Fixed-Point Advisor

• Converting a Model from Floating- to Fixed-Point Using Simulation Data

• Overview of the Fixed-Point Tool

• Run Management

• Debug a Fixed-Point Model

  Learning Objectives

• Model Description

  Before You Begin

• Automatically Converting a Floating-Point Model to Fixed Point

  Key Points to Remember

  Where to Learn More

  Producing Lookup Table Data

• Worst-Case Error for a Lookup Table

• Create Lookup Tables for a Sine Function

  Use Lookup Table Approximation Functions

• Effects of Spacing on Speed, Error, and Memory Usage

  About Automatic Data Typing

  Before Using the Fixed-Point Tool to Propose Data Types for Your Simulink Model

• Best Practices for Using the Fixed-Point Tool to Propose Data Types for Your Simulink Model

  Models That Might Cause Data Type Propagation Errors

• Automatic Data Typing Using Simulation Data

• Automatic Data Typing Using Derived Minimum and Maximum Values

• Propose Fraction Lengths

• Propose Word Lengths

• Propose Data Types For a Model Using Results from Multiple Simulations

• How Range Analysis Works

  Derive Ranges

• Derive Ranges at the Subsystem Level

  View Derived Range Information in the Fixed-Point Tool

• Range Analysis Examples

  Unsupported Simulink Software Features

• Supported and Unsupported Simulink Blocks

  Generating and Deploying Production Code

• Code Generation Support

  Accelerating Fixed-Point Models

• Using External Mode or Rapid Simulation Target

• Optimize Your Generated Code

• Optimizing Your Generated Code with the Model Advisor

• Fixed-Point Advisor

• Prepare Model for Conversion

• Prepare for Data Typing and Scaling

• Return to the Fixed-Point Tool to Perform Data Typing and Scaling

• Data Type Support

  Structure of the S-Function

• Storage Containers

• Data Type IDs

• Overflow Handling and Rounding Methods

  Create MEX-Files

• Fixed-Point S-Function Examples

  API Function Reference