Release notes
for IAR Embedded Workbench for Renesas RL78 version 4.21.4
Read about the latest features, new device support, and program corrections in the release notes.
- Highlights
- Important information
- Release notes for individual components
- Product packages
- Installation and license activation
Highlights
Service Pack 4.21.4E1 and E20 emulator firmware files added
The E1 and E20 emulators were not able to update their firmware due to missing files in the product installation.Error correction
Errors have been corrected in the linker configuration files.
RL78/F24 microcontroller group support
The RL78/F24 group of microcontrollers is now supported including C-SPY debugging support.Error correction
Errors have been corrected in the compiler and linker.
RL78 COM Port support
A new C-SPY driver called COM Port has been added. This enables basic hardware debugging via a USB-to-serial adapter.Optimization for shift operations
The generated code for shift operations on volatile declared variables has been optimized.
RL78/G23 microcontroller group support
The RL78/G23 group of microcontrollers is now supported.IAR Build Tools for Linux
A new product called IAR Build Tools for Renesas RL78 has been introduced. It requires a separate product license and is distributed as a Debian package for Ubuntu containing the IAR C/C++ Compiler, IAR Assembler, Linker and library tools, C-STAT, IARBuild, and runtime libraries.C-STAT enhancements
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.
Renesas Smart Configurator included
The Renesas RL78 Smart Configurator V1.0.1 has been included.
Important information
- Upgrade information
- Before you install
To avoid any problems, do not install this release in a directory where you have previously installed any older version of IAR Embedded Workbench. It is recommended that you either uninstall an earlier product, or install this release in a separate directory. As before, however, it is possible to install different products, all using the same version of the main application, in the same root directory.
- License renewal
The upgrade to this version requires a license renewal. This can be performed by starting the IAR License Manager and selecting License→Check for License Renewal, or by using the Light License Manager with the command
LightLicenseManager renew YOUR_PROD.EW
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Microsoft SCC interface no longer supported
Microsoft SCC-compatible version control systems are no longer supported by IAR Embedded Workbench.
- Microsoft Windows
Windows Vista and newer operating systems have a security mechanism called UAC (User Access Control). Disabling UAC will automatically grant you permission when a task requires administrative rights but this is not recommended because it will reduce the security of the computer. It is not necessary to run the IAR Embedded Workbench IDE as an administrator. However, if you are not, modifications to the installed product tree in C:\Program Files\IAR Systems might not work as intended and could give unexpected results. One example is opening and building projects directly from the installed product tree. The build will succeed, but the resulting files (object, list, ...) will not appear where expected. Instead all output files will be redirected by the OS to C:\Users\<user name>\AppData\Local\VirtualStore\Program Files\IAR Systems. To avoid this, the preferred way is to copy the examples to a location outside Program Files, either manually or automatically by opening them via the IAR Information Center.
- Network licenses
For network licenses, IAR Embedded Workbench for RL78 version 4.20 and later require IAR License Server Tools version 2.17.2 or later. For more information, see technical note TN21842. The latest IAR License Server Tools are backwards compatible with previous IAR Embedded Workbench versions. Note, if you are running older versions of the product, the number of users displayed in the Network Licenses window might be too large. This is cosmetic and does not affect the use of your network license. The problem has been corrected in v2.17.2 of the IAR License Server Tools and the IAR License Manager.
- Migration from version 1.x
Read the guide Migrating from UBROF to ELF/DWARF if you are migrating from version 1.x of this product.
- Software updates from Renesas
The latest device files, emulator firmware, and other software updates from Renesas can be found here.
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