Real-Time Workshop Release Notes

Chapter 1
Real-Time Workshop 5.0 Release Notes

Release Summary

Real-Time Workshop 5.0 includes many new features, numerous improvements in the quality of generated code, as well as enhancements to existing features. This section summarizes new features and enhancements added in the Real-Time Workshop 5.0 since the Real-Time Workshop 4.1 release.

New Features and Enhancements

Code Generation Infrastructure Enhancements

• Code for Nonvirtual Subsystems Is Now Reusable
• Packaging of Generated Code Files Simplified
• Most Targets Use rtModel Instead of Root SimStruct
• Hook Files for Communicating Target-specific Word Characteristics
• Code Generation Unified for Real-Time Workshop and Stateflow
• Conditional Input Branch Execution Optimization

Code Generation Configuration Features

• Diagnostics Pane Items Classified into Logical Groups
• Comments Not Generated for Reduced Blocks When "Show eliminated statements" Is Off
• New General Code Appearance Options
• Identifier Construction for Generated Code Has Been Simplified
• GUI Control over Behavior of Assertion Blocks in Generated Code
• GUI Control Over TLC %assert Directive Evaluation

Block-level Enhancements

• New Rate Transition Block
• S-Function API Extended to Permit Users to Define DWork Properties
• Lookup Table Blocks Use New Run-time Library for Smaller Code
• Relay Block Now Supports Frame-based Processing
• Transport Delay and Variable Transport Delay Improvements
• Storage Classes for Data Store Memory Blocks

Target and Mode Enhancements

• Rapid Simulation Target Now Supports Variable-step Solvers
• External Mode Support for Rapid Simulation Target
• External Mode Support for ERT
• External Mode Supports Uploading Signals of All Storage Classes
• Expanded Support for Borland C Compilers

TLC, model.rtw, and Library Enhancements

• New Simulink Data Object Properties Mapped to model.rtw Files
• SPRINTF Built-in Function Added to TLC
• LCC Now Links Libraries in Directory sys/lcc/lib
• The BlockInstanceData Function has been Deprecated

Documentation Enhancements

• Generate HTML Report Option Available for Additional Targets
• Expression Folding API Documentation Available
• Real-Time Workshop Documentation
• Target Language Compiler Documentation

Major Bug Fixes

• ImportedExtern and ImportedExternPointer Storage Class Data No Longer Initialized
• External Mode Properly Handles Systems with no Uploadable Blocks
• Nondefault Ports Now Usable for External Mode on Tornado Platform
• Initialize Block Outputs Even If No Block Output Has Storage Class Auto
• Code Is Generated Without Errors for Single Precision Datatype Block Outputs
• Duplicate #include Statements No Longer Generated
• Custom Storage Classes Ignored When Unlicensed for Embedded Coder
• Erroneous Sample Time Warning Messages No Longer Issued
• Discrete Integrator Block with Rolled Reset No Longer Errors Out
• Rate Limiter Block Code Generation Limitation Removed
• Multiport Switch with Expression Folding Limitation Removed
• Pulse Generator Code Generation Failures Rectified
• Stateflow I/O with ImportedExternPointer Storage Class Now Handled Correctly
• Parameters for S-Function Target Lookup Blocks May Now Be Made Tunable
• PreLook-up Index Search Block Now Handles Discontiguous Wide Input
• SimViewingDevice Subsystem No Longer Fails to Generate Code
• Accelerator Now Works with GCC Compiler on UNIX
• Expression Folding Behavior for Action Subsystems Stabilized
• Dirty Flag No Longer Set During Code Generation
• Subsystem Filenames Now Completely Checked for Illegal Characters
• Sine Wave and Pulse Generator Blocks No Longer Needlessly Use Absolute Time
• Generated Code for Action Subsystems Now Correctly Guards Execution of Fixed in Minor Time Step Blocks
• Report Error when Code Generation Requested for Models with Algebraic Loops

Upgrading from an Earlier Release

• Replacing Obsolete Header File #includes
• Custom Code Blocks Moved from Simulink Library
• Updating Custom TLC Code
• Upgrading Customized GRT and GRT-Malloc Targets to Work with Release 13

Known Software and Documentation Problems

• No Code Generation Support for 64-bit Integer Values
• Missing Examples Intended to Describe Combining Multiple Models
• Setting Environment Variable to Run Rapid Simulation Target Executables on Solaris
• Limitation Affecting Rolling Regions of Discontiguous Signals
• Code Generation Failure in Nested Directories Under Windows 98

Real-Time Workshop Release Notes

New Features and Enhancements