Some of the DLIB libraries delivered with the product now contain optimized variants, such as a small integer division routine for Cortex-M0, or a fast strcpy implementation for cores that support the Thumb-2 ISA. The compiler and linker will automatically select the variant that matches the optimization goal. It is possible to override this selection by using the option –use_optimized_variants. See user guide corrections for more information.
The debugger now supports the latest CMSIS-DAP standard with WinUSB transfer mode resulting in faster debug experiences when using CMSIS-DAP v2 compliant boards.
Support for new devices from Ambiq, Cypress, Microchip, NXP, Qorvo.
Read about the latest features, new device support, and program corrections in the release notes.
Control of optimized DLIB library functions
Some of the DLIB libraries delivered with the product now contain optimized variants, such as a small integer division routine for Cortex-M0, or a fast strcpy implementation for cores that support the Thumb-2 ISA. The compiler and linker will automatically select the variant that matches the optimization goal. It is possible to override this selection by using the option --use_optimized_variants. See user guide corrections for more information.
CMSIS-DAP v2
The debugger now supports the the latest CMSIS-DAP standard with WinUSB transfer mode resulting in faster debug experiences when using CMSIS-DAP v2 compliant boards.
New device support
| AmbiqMicro | AMA3B1KK-KBR AMA3B1KK-KCR |
|---|---|
| Cypress | CY8C6136FTI-F42 CY8C6247BFI-D54 CY8C6247BZI-AUD54 CY8C6247FTI-D52 CY8C6316BZI-BLF04 CY8C6316BZI-BLF54 CY8C6336BZI-BLD14 CY8C6336BZI-BLF04 CY8C6347BZI-BLD34 CY8C6347BZI-BLD44 CY8C6347BZI-BLD54 CYBLE-416045-02 |
| Microchip | ATSAMD21E15BU ATSAMD21E15CU ATSAMD21E16BU ATSAMD21E16CU ATSAMD21E17D ATSAMD21E17DU ATSAMD21E17L ATSAMD21G17AU ATSAMD21G17D ATSAMD21G17L ATSAMD21J17D ATSAMD21G18AU ATSAML10D14A ATSAML10D15A ATSAML10D16A ATSAML10E14A ATSAML10E15A ATSAML10E16A ATSAML11D14A ATSAML11D15A ATSAML11D16A ATSAML11E14A ATSAML11E15A ATSAML11E16A ATSAMR30E18A ATSAMR30G18A |
| NXP | MIMXRT1064xxx5A MIMXRT1064xxx6A |
| Qorvo | UE878NKDG UE878NMDG UE878NMEG |
Device support
Example projects
Over 9500 example projects for various evaluation boards are included in the product installation. See the Information Center.
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.
The upgrade to this version might require a license renewal. This is performed by starting the IAR License Manager and selecting License>Check for License Renewal.
Note, if you have a network license, this must be performed on the license server.
Microsoft SCC-compatible version control systems are no longer supported by IAR Embedded Workbench.
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.
For network licenses, this version of the IAR Embedded Workbench requires IAR License Server Tools version 2.16.2 or later. For more information see technical note TN21842. The latest IAR License Server Tools are backwards-compatible with previous IAR Embedded Workbench versions.
The debugger flash loader mechanism was changed in version 5.40. If your project uses a default flash loader with no extra parameters, no migration work is needed.
If the debugger detects that your project uses a non-default flash loader or that it uses extra parameters, it will revert to the default flash loader for your device. In addition a .board file will be created in the project directory. If necessary the .board file can be edited and used by manually overriding the default flash loader with this project-specific .board file.
If you are migrating from version 4.x to this version, we recommend that you read the IAR Embedded Workbench Migration Guide for ARM.
The object format used in the compiler, assembler, linker, and debugger is based on the ARM ABI standard version 2.10 with ELF/DWARF 4. For the standard definition, see the ARM Application Binary Interface.
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