diff --git a/iar_cortexm3_v5.yml b/iar_cortexm3_v5.yml
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+# unit testing under iar compiler / simulator for STM32 Cortex-M3
+
+tools_root: &tools_root 'C:\Program Files\IAR Systems\Embedded Workbench 5.4\'
+compiler:
+ path: [*tools_root, 'arm\bin\iccarm.exe']
+ source_path: 'src\'
+ unit_tests_path: &unit_tests_path 'test\'
+ build_path: &build_path 'build\'
+ options:
+   - --dlib_config
+   - [*tools_root, 'arm\inc\DLib_Config_Normal.h']
+   - --no_cse
+   - --no_unroll
+   - --no_inline
+   - --no_code_motion
+   - --no_tbaa
+   - --no_clustering
+   - --no_scheduling
+   - --debug
+   - --cpu_mode thumb
+   - --endian=little
+   - --cpu=Cortex-M3
+   - --interwork
+   - --warnings_are_errors
+   - --fpu=None
+   - --diag_suppress=Pa050
+   - --diag_suppress=Pe111
+   - -e
+   - -On
+ includes:
+   prefix: '-I'
+   items:
+     - [*tools_root, 'arm\inc\']
+     - 'src\'
+     - *unit_tests_path
+     - 'vendor\unity\src\'
+     - 'iar\iar_v5\incIAR\'
+ defines:
+   prefix: '-D'
+   items:
+     - 'IAR'
+ object_files:
+   prefix: '-o'
+   extension: '.r79'
+   destination: *build_path
+linker:
+ path: [*tools_root, 'arm\bin\ilinkarm.exe']
+ options:
+   - --redirect _Printf=_PrintfLarge
+   - --redirect _Scanf=_ScanfSmall
+   - --semihosting
+   - --entry __iar_program_start
+   - --config
+   - [*tools_root, 'arm\config\generic_cortex.icf']
+ object_files:
+   path: *build_path
+   extension: '.o'
+ bin_files:
+   prefix: '-o'
+   extension: '.out'
+   destination: *build_path
+simulator:
+ path: [*tools_root, 'common\bin\CSpyBat.exe']
+ pre_support:
+   - --silent
+   - [*tools_root, 'arm\bin\armproc.dll']
+   - [*tools_root, 'arm\bin\armsim.dll']
+ post_support:
+   - --plugin
+   - [*tools_root, 'arm\bin\armbat.dll']
+   - --backend
+   - -B
+   - -p
+   - [*tools_root, 'arm\config\debugger\ST\iostm32f107xx.ddf']
+   - --cpu=Cortex-M3
+   - -d
+   - sim
+colour: true
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