# FreeRTOS and IAR

**URL:** <https://forums.freertos.org/t/freertos-and-iar/5429>\
**Category:** Kernel\
**Created:** [January 28, 2010, 2:07pm UTC](https://forums.freertos.org/t/freertos-and-iar/5429 "2010-01-28T14:07:43Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [January 28, 2010, 2:07pm UTC](https://forums.freertos.org/t/freertos-and-iar/5429/1 "2010-01-28T14:07:43Z")

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**[skpgebo](https://sourceforge.net/u/skpgebo/)** wrote on [Thursday, January 28, 2010](https://sourceforge.net/p/freertos/discussion/382005/thread/f26c301b/#0991):

I just downloaded the last version of FreeRTOS (RTOSV6.0.2) and IAR version 5.41 Kickstart.  
Tried to open the project rtosdemo.eww located in …/Demo/uIP\_Demo\_IAR\_ARM7, but I always get the error message : "The project ‘rtosdemo’ contains the unknown tool ‘STLINK\_ID’.&nbsp; I also tried load other projects, but get the same error.

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**Author:** ![rtel](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/rtel/32/31_2.png) [@rtel](https://forums.freertos.org/u/rtel)\
**Post date:** [January 28, 2010, 2:46pm UTC](https://forums.freertos.org/t/freertos-and-iar/5429/2 "2010-01-28T14:46:35Z")

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**[rtel](https://sourceforge.net/u/rtel/)** wrote on [Thursday, January 28, 2010](https://sourceforge.net/p/freertos/discussion/382005/thread/f26c301b/#cb94):

Did you open the project in an older version of IAR first?&nbsp; If so, please grab a clean FreeRTOS installation and try again.&nbsp; I just did this and the project opened and compiled with no problems.

Regards.

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**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [January 28, 2010, 3:10pm UTC](https://forums.freertos.org/t/freertos-and-iar/5429/3 "2010-01-28T15:10:25Z")

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**[skpgebo](https://sourceforge.net/u/skpgebo/)** wrote on [Thursday, January 28, 2010](https://sourceforge.net/p/freertos/discussion/382005/thread/f26c301b/#cf56):

The project was first opened with version 5.10 of IAR. After reinstallation of the FreeRTOS files I still got an error: “Broken option were detected in the project file” and after that I got the old error "The project ‘rtosdemo’ contains the unknown tool ‘STLINK\_ID’.  
It seems to be some mismatch beetween my versions of IAR and FreeRTOS.

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**Author:** ![rtel](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/rtel/32/31_2.png) [@rtel](https://forums.freertos.org/u/rtel)\
**Post date:** [January 28, 2010, 3:16pm UTC](https://forums.freertos.org/t/freertos-and-iar/5429/4 "2010-01-28T15:16:04Z")

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**[rtel](https://sourceforge.net/u/rtel/)** wrote on [Thursday, January 28, 2010](https://sourceforge.net/p/freertos/discussion/382005/thread/f26c301b/#3c05):

The project was created using V5.40 and as far as I can tell opens and compiles without issues in V5.41.&nbsp; IAR will silently destroy a project if you try opening the project in a version of IAR that is older than the one used to create the project.

Regards.

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**Author:** ![system](https://d2v6vdsk2p900z.cloudfront.net/original/1X/7fc8fdb729c645aab5b20282bbe34e57cb407be6.jpeg) [@system](https://forums.freertos.org/u/system)\
**Post date:** [January 28, 2010, 3:25pm UTC](https://forums.freertos.org/t/freertos-and-iar/5429/5 "2010-01-28T15:25:15Z")

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**[skpgebo](https://sourceforge.net/u/skpgebo/)** wrote on [Thursday, January 28, 2010](https://sourceforge.net/p/freertos/discussion/382005/thread/f26c301b/#195e):

Shall I try to reinstall the IAR, too ?  
ShalI I try IAR V5.40 instead ?