IAR Embedded Workbench for Renesas RX

Library support for the C++17 language standard

The toolset includes a new C++ library that supports C++17 library features.

Additional GNU C language extensions

The IAR C/C++ Compiler supports a number of new GCC-style operators, attributes and expressions in extended language mode.

Editor and IDE enhancements

• Editor themes - a new way to set up the colors and fonts in the text editor
• Syntax feedback - instant syntax suggestions while typing
• Improved parameter hints
• Window color themes - dark mode
• Gray out inactive code support

RX660 and RX26T supported

The RX660 and RX26T groups of microcontrollers are now supported.

Iarbuild enhancements

The iarbuild command line build utility now supports:

• Generating a Ninja build file based on the IAR Embedded Workbench project format
• Generating a JSON description of the Embedded Workbench project
• More C-STAT reporting and configuration methods

64-bit Windows application

IAR Embedded Workbench now runs as a 64-bit Windows application.

Visual Studio Code support

The IAR Build and IAR C-SPY Debug extensions available on Microsoft Marketplace enable you to work in Visual Studio Code (with IAR Embedded Workbench installed) to:

• Build IAR Embedded Workbench projects
• Run the C-STAT static analysis tool
• Debug applications using the same range of hardware/debug probes as in IAR Embedded Workbench.

C-STAT enhancements

• MISRA C:2012 Amendment 2
  The static analysis tool C-STAT has extended its coverage of the MISRA C:2012 Coding Standard and now fully supports MISRA C:2012 Amendment 2. This Amendment adds two additional rules to MISRA C:2012 and introduces support for ISO/IEC 9899:2011, commonly referred to as "C11".
• Improved performance
  Depending on the project, the analysis can be up to 40% faster and memory consumption reduced by up to 20%, compared to the previous version of C-STAT.

Updated device support

The device support files have been updated to the most recent version from Renesas.

Updated user documentation

The C/C++ Development Guide, C-SPY Debugging Guide, and IDE Project Management and Building Guide have been updated to reflect the product changes.

C-STAT enhancements

• MISRA C:2012 Amendment 1
  The static analysis tool C-STAT has extended its coverage of the MISRA C:2012 Coding Standard and now fully supports MISRA C:2012 Amendment 1. This amendment adds 14 additional rules to MISRA C:2012 with a focus on security concerns highlighted by the ISO C Secure Guidelines. Several of these address specific issues pertaining to the use of untrustworthy data, a well-known security vulnerability.
• Extended coverage of CERT C
  The static analysis tool C-STAT has extended its coverage of the SEI CERT C Coding Standard. The SEI CERT C Coding Standard's goal is to provide rules for developing safe, reliable, and secure systems in the C programming language, with support for C11 constructs. C-STAT covers all rules in the different CERT C sections listed on the CERT C wiki as of January 2020, with the exception of the API, CON, POS, and WIN sections, which are not applicable to IAR Systems products, yielding a total of 90 covered rules.
• Link analysis trace information
  The link analysis messages now display trace information when relevant. For checks looking for conflicting symbol names, all conflicting declarations are now listed in the trace information instead of each pair of conflicts being described in a separate message. This might lead to fewer reported messages for the same number of found issues.

IAR Build Tools for Linux

A new product, IAR Build Tools for Renesas RX is available. It contains the IAR C/C++ Compiler, IAR Assembler, Linker and library tools, C-STAT, IARBuild, and runtime libraries. Get product info

Renesas Smart Configurator update

The Renesas Smart Configurator (included) has been updated to V2.7.0.

• IAR Embedded Workbench IDE User Guide
• C/C++ Development Guide
• IAR Assembler Reference Guide
• IAR Embedded Workbench C-SPY Debugging Guide
• IAR Embedded Workbench MISRA C:1998 Reference Guide
• IAR Embedded Workbench MISRA C:2004 Reference Guide
• Migration guide from Renesas HEW to IAR Embedded Workbench for RX
• Migrating from UBROF to ELF/DWARF

Debugging system support

• Renesas E1 Emulator
• Renesas E2 Emulator
• Renesas E2 Emulator Lite
• Renesas E20
• Segger J-Link
• C-SPY Debugger plugin SDK available for 3rd party debuggers

RTOS support

• OSEK Run Time Interface ORTI
• Express Logic
• Micrium
• FreeRTOS
• CMX
• embOS
• UNISON

The RTOS plugin installs a number of new windows in C-SPY, most importantly the task or thread list windows where task-specific breakpoints can be specified and task-specific steps executed. Different inspector windows display the contents of the internal data structures of the RTOS such as timers, queues, semaphores, resources and mailboxes.

IAR C/C++ Compilerは、CおよびC++プログラム言語の各種方言や、組込みプログラミング用の様々な拡張機能に対応します（あらゆる実装に対応する言語規格をすべてサポートしているわけではありません）。厳格な規格コンプライアンスに対応するために拡張機能を禁止することも可能です。

一般的なデバッガやエミュレータのほとんどと互換性のある業界標準のデバッグおよびイメージフォーマットを幅広くサポートしています。これにはELF/DWARFなどが含まれます。

ISO/ANSI C/C++ へのコンプライアンス

IAR C/C++ Compilerは、次のようなCプログラム言語規格をフリースタンディングに実装しています。

• INCITS/ISO/IEC 9899:2018、別名C18 (最新バージョンのみ)

• IAR C/C++ CompilerはC++17のすべての機能に対応。C++ライブラリはC++14に対応、C++17追加機能のサポートなし。(最新バージョンのみ)

• ISO/IEC 14882:2015、別名C++14

• INCITS/ISO/IEC 9899:2012、別名C11

• ANSI X3.159-1989、別名C89

IEEE 754規格

IAR Embedded Workbenchは浮動小数点演算のIEEE 754規格に対応しています。

MISRA C

MISRA Cは、MISRA (自動車産業ソフトウェア信頼性協会) が開発したCプログラム言語のためのソフトウェア開発規格で、SO規格のC言語で記述する組込みシステムでのコードの安全性、可搬性、信頼性を確保することを主な目的としています。

MISRA C規格の初版「自動車用ソフトウェアでC言語を利用するための手引き(Guidelines for the use of the C language in vehicle based software)」は、1998年に策定されました。2004年には第2版が作成され、規則番号の全面的な見直しなどの重要な変更が数多く行われました。さらに、拡張サポート付きのMISRA C:2012および安全でないコード構造を識別するためのMISRA C++:2008も規格に追加されました。

IAR Embedded Workbenchの特長であるアドオン製品 C-STATによって、MISRA C:2004、MISRA C++:2008、MISRA C:2012が策定した規則への準拠をチェックすることができます。

テスト検証

IARは、次のような市販のテストスイートを使って、IARのツールが規格に準拠していることを確認しています。

• ISO/IEC Cへの準拠を確認するPlum Hall Validationテストスイート

• C++への準拠を確認するPerennial EC++ Validation Suite

• IARライブラリのC/C++規格への準拠およびC++規格に対するSTL実装を検証するDinkum C++ Proofer

上記の市販スイーツに加えて、いくつかの内製テストスイートを使用して、新機能の検証、リグレッションテスト、エラー修正に対する検証などを実施しています。

Renesas FIT simplifies development for the RX family. The technology is supported by IAR Embedded Workbench for RX.

Renesas FIT consists of a Board Support Package (BSP), peripheral function modules, middleware modules, and interface modules and these can be used with IAR Embedded Workbench for RX.

The tool Renesas Smart Configurator, supplied with IAR Embedded Workbench for RX, supports the following three functions related to embedding Renesas drivers in your systems:

• importing FIT modules
• generating driver code
• generating device configuration code

The generated modules are incorporated via the IAR Project Connection mechanism.