Hello, I’m trying write Wrapper Class for FreeRTOS with ARM GCC on eclipse platform. I had worked same Wrapper Class on Keil MDK-ARM v5.14. I’m using stm32f303vc which is cortex-m4 and it has got Hardware FPU. So I have included SourceportableGCCARM_CM4F port files to my project. I dont invoke any freertos functions in my main.cpp just compiled empty project. Here is my compilier output: ~~~~~~ 18:05:27 **** Incremental Build of configuration Release for project RtosWrapper **** make all Building file: ../system/src/stm32f3-stdperiph/stm32f30xgpio.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/stm32f3-stdperiph/stm32f30xgpio.d” -MT”system/src/stm32f3-stdperiph/stm32f30xgpio.o” -c -o “system/src/stm32f3-stdperiph/stm32f30xgpio.o” “../system/src/stm32f3-stdperiph/stm32f30xgpio.c” Finished building: ../system/src/stm32f3-stdperiph/stm32f30x_gpio.c Building file: ../system/src/stm32f3-stdperiph/stm32f30xrcc.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/stm32f3-stdperiph/stm32f30xrcc.d” -MT”system/src/stm32f3-stdperiph/stm32f30xrcc.o” -c -o “system/src/stm32f3-stdperiph/stm32f30xrcc.o” “../system/src/stm32f3-stdperiph/stm32f30xrcc.c” Finished building: ../system/src/stm32f3-stdperiph/stm32f30x_rcc.c Building file: ../system/src/newlib/cxx.cpp Invoking: Cross ARM C++ Compiler arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu++11 -fabi-version=0 -fno-exceptions -fno-rtti -fno-use-cxa-atexit -fno-threadsafe-statics -MMD -MP -MF”system/src/newlib/cxx.d” -MT”system/src/newlib/cxx.o” -c -o “system/src/newlib/cxx.o” “../system/src/newlib/cxx.cpp” Finished building: ../system/src/newlib/_cxx.cpp Building file: ../system/src/newlib/exit.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/newlib/exit.d” -MT”system/src/newlib/exit.o” -c -o “system/src/newlib/exit.o” “../system/src/newlib/exit.c” Finished building: ../system/src/newlib/_exit.c Building file: ../system/src/newlib/sbrk.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/newlib/sbrk.d” -MT”system/src/newlib/sbrk.o” -c -o “system/src/newlib/sbrk.o” “../system/src/newlib/sbrk.c” Finished building: ../system/src/newlib/_sbrk.c Building file: ../system/src/newlib/startup.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -DOSINCLUDESTARTUPINITMULTIPLERAMSECTIONS -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/newlib/startup.d” -MT”system/src/newlib/startup.d” -c -o “system/src/newlib/startup.o” “../system/src/newlib/startup.c” Finished building: ../system/src/newlib/_startup.c Building file: ../system/src/newlib/syscalls.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/newlib/syscalls.d” -MT”system/src/newlib/syscalls.o” -c -o “system/src/newlib/syscalls.o” “../system/src/newlib/syscalls.c” Finished building: ../system/src/newlib/_syscalls.c Building file: ../system/src/newlib/assert.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSE_VALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/newlib/assert.d” -MT”system/src/newlib/assert.o” -c -o “system/src/newlib/assert.o” “../system/src/newlib/assert.c” Finished building: ../system/src/newlib/assert.c Building file: ../system/src/diag/Trace.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSE_VALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/diag/Trace.d” -MT”system/src/diag/Trace.o” -c -o “system/src/diag/Trace.o” “../system/src/diag/Trace.c” Finished building: ../system/src/diag/Trace.c Building file: ../system/src/diag/traceimpl.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/diag/traceimpl.d” -MT”system/src/diag/traceimpl.o” -c -o “system/src/diag/traceimpl.o” “../system/src/diag/traceimpl.c” Finished building: ../system/src/diag/trace_impl.c Building file: ../system/src/cortexm/initializehardware.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/cortexm/initializehardware.d” -MT”system/src/cortexm/initializehardware.o” -c -o “system/src/cortexm/initializehardware.o” “../system/src/cortexm/initializehardware.c” Finished building: ../system/src/cortexm/initialize_hardware.c Building file: ../system/src/cortexm/resethardware.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/cortexm/resethardware.d” -MT”system/src/cortexm/resethardware.o” -c -o “system/src/cortexm/resethardware.o” “../system/src/cortexm/resethardware.c” Finished building: ../system/src/cortexm/reset_hardware.c Building file: ../system/src/cortexm/exceptionhandlers.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/cortexm/exceptionhandlers.d” -MT”system/src/cortexm/exceptionhandlers.o” -c -o “system/src/cortexm/exceptionhandlers.o” “../system/src/cortexm/exceptionhandlers.c” Finished building: ../system/src/cortexm/exception_handlers.c Building file: ../system/src/cmsis/systemstm32f30x.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/cmsis/systemstm32f30x.d” -MT”system/src/cmsis/systemstm32f30x.o” -c -o “system/src/cmsis/systemstm32f30x.o” “../system/src/cmsis/systemstm32f30x.c” Finished building: ../system/src/cmsis/system_stm32f30x.c Building file: ../system/src/cmsis/vectorsstm32f30x.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/cmsis/vectorsstm32f30x.d” -MT”system/src/cmsis/vectorsstm32f30x.o” -c -o “system/src/cmsis/vectorsstm32f30x.o” “../system/src/cmsis/vectorsstm32f30x.c” Finished building: ../system/src/cmsis/vectors_stm32f30x.c Building file: ../system/src/FreeRTOSc/croutine.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSE_VALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/FreeRTOSc/croutine.d” -MT”system/src/FreeRTOSc/croutine.o” -c -o “system/src/FreeRTOSc/croutine.o” “../system/src/FreeRTOSc/croutine.c” Finished building: ../system/src/FreeRTOSc/croutine.c Building file: ../system/src/FreeRTOSc/eventgroups.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/FreeRTOSc/eventgroups.d” -MT”system/src/FreeRTOSc/eventgroups.o” -c -o “system/src/FreeRTOSc/eventgroups.o” “../system/src/FreeRTOSc/eventgroups.c” Finished building: ../system/src/FreeRTOSc/event_groups.c Building file: ../system/src/FreeRTOSc/heap1.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/FreeRTOSc/heap1.d” -MT”system/src/FreeRTOSc/heap1.o” -c -o “system/src/FreeRTOSc/heap1.o” “../system/src/FreeRTOSc/heap1.c” Finished building: ../system/src/FreeRTOSc/heap_1.c Building file: ../system/src/FreeRTOSc/list.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSE_VALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/FreeRTOSc/list.d” -MT”system/src/FreeRTOSc/list.o” -c -o “system/src/FreeRTOSc/list.o” “../system/src/FreeRTOSc/list.c” Finished building: ../system/src/FreeRTOSc/list.c Building file: ../system/src/FreeRTOSc/port.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSE_VALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I”D:Elektronik ve MeslekleProjelerim2015RtosWrappersystemincludeFreeRTOSh” -std=gnu11 -MMD -MP -MF”system/src/FreeRTOSc/port.d” -MT”system/src/FreeRTOSc/port.o” -c -o “system/src/FreeRTOSc/port.o” “../system/src/FreeRTOSc/port.c” C:UsersNamchoAppDataLocalTempcc5F19lf.s: Assembler messages: C:UsersNamchoAppDataLocalTempcc5F19lf.s:372: Error: selected processor does not support Thumb mode vstmdbeq r0!,{s16-s31}' C:UsersNamchoAppDataLocalTempcc5F19lf.s:374: Error: instruction not allowed in IT block --stmdb r0!,{r4-r11,r14}’ C:UsersNamchoAppDataLocalTempcc5F19lf.s:395: Error: selected processor does not support Thumb mode vldmiaeq r0!,{s16-s31}' C:UsersNamchoAppDataLocalTempcc5F19lf.s:397: Error: instruction not allowed in IT block --msr psp,r0′ make: *** [system/src/FreeRTOSc/port.o] Error 1 system/src/FreeRTOSc/subdir.mk:39: recipe for target ‘system/src/FreeRTOSc/port.o’ failed 18:05:31 Build Finished (took 3s.613ms) ~~~~~~

This is a compiler command line problem. The compiler is complaining about floating point instructions because you have not told it that the processor has a floating point unit. I’m not sure if the flags in this post are correct for you, but you get the idea: http://www.freertos.org/FreeRTOSSupportForumArchive/December2012/freertosSTM32F4GCCcompilationproblems_6404907.html Regards.

Thanks for your help It worked. Here is my Processor settings: -Float ABI = softfp(I was trying with hard option because stm32f303 has got hard-FPU unit. I dont figure out yet why this option isn’t working.) -FPU Type = fpv4-sp-d16 -Instruction set = thumb So after that correction I have worked simple led blink example with using C++. Anyone can take a look my source code from bitbucket(https://bitbucket.org/Namcho/freertosgccstm32f3/src). The led blink example written in Demo.cpp class file. Then I have tryed to do same think for FreeRTOS but I failed. Source code: https://bitbucket.org/Namcho/freertosgccstm32f3/src/404ab212c4acb806a6b18037739adf0f7668cdb9/src/main.cpp?at=develop Here is compiler output: ~~~~~~ 10:42:55 **** Incremental Build of configuration Release for project freeRtosgccstm32f3 **** make all Building target: freeRtosgccstm32f3.elf Invoking: Cross ARM C++ Linker arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -T mem.ld -T libs.ld -T sections.ld -nostartfiles -Xlinker –gc-sections -L”../ldscripts” -Wl,-Map,”freeRtosgccstm32f3.map” –specs=nano.specs -o “freeRtosgccstm32f3.elf” ./system/src/stm32f3-stdperiph/stm32f30xgpio.o ./system/src/stm32f3-stdperiph/stm32f30xrcc.o ./system/src/newlib/cxx.o ./system/src/newlib/exit.o ./system/src/newlib/sbrk.o ./system/src/newlib/startup.o ./system/src/newlib/syscalls.o ./system/src/newlib/assert.o ./system/src/freeRTOS/croutine.o ./system/src/freeRTOS/eventgroups.o ./system/src/freeRTOS/heap4.o ./system/src/freeRTOS/list.o ./system/src/freeRTOS/port.o ./system/src/freeRTOS/queue.o ./system/src/freeRTOS/tasks.o ./system/src/freeRTOS/timers.o ./system/src/diag/Trace.o ./system/src/diag/traceimpl.o ./system/src/cortexm/initializehardware.o ./system/src/cortexm/resethardware.o ./system/src/cortexm/exceptionhandlers.o ./system/src/cmsis/systemstm32f30x.o ./system/src/cmsis/vectorsstm32f30x.o ./src/Demo.o ./src/TaskOOP.o ./src/write.o ./src/main.o
c:/program files (x86)/gnu tools arm embedded/4.9 2015q1/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/bin/ld.exe: freeRtosgccstm32f3.elf section .bss' will not fit in regionRAM’ c:/program files (x86)/gnu tools arm embedded/4.9 2015q1/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/bin/ld.exe: region `RAM’ overflowed by 36520 bytes collect2.exe: error: ld returned 1 exit status make: *** [freeRtosgccstm32f3.elf] Error 1 makefile:63: recipe for target ‘freeRtosgccstm32f3.elf’ failed

10:42:58 Build Finished (took 2s.403ms)

~~~~~~ When I make comment ledObj.create(“LED1”,configMINIMALSTACKSIZE,1); that line, the code is compiled without any errors.

That is a linker error not a compiler error. Somehow including that line has increased the RAM footprint by more thank 30K.

Yes, I examine mem.ld and sections.ld linker file but I cant figure out anything yet. Could you give me some hint to solve that issue.

First see if it is the C++ that is causing the linker error or just that you are creating a task which then brings in the heap array. Try replacing the call to ledObj.create with a direct xTaskCreate() call. Do you still get the linker error?

Yes I’m still getting the linker error(36520 bytes overflow). I’ve tryed this in main.cpp file. In addition I’ve created C project then compiled just xTaskCreate(vTask1,”LED1″,configMINIMALSTACKSIZE,NULL,1,NULL); function Here is the output: ~~~~~~ 13:29:06 **** Incremental Build of configuration Release for project freeRTOSgccstm32f3c **** make all Building file: ../src/main.c Invoking: Cross ARM C Compiler arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra -g -DOSUSETRACESEMIHOSTINGDEBUG -DSTM32F30X -DUSESTDPERIPHDRIVER -DHSEVALUE=8000000 -I”../include” -I”../system/include” -I”../system/include/cmsis” -I”../system/include/stm32f3-stdperiph” -I../system/include/freeRTOS -std=gnu11 -MMD -MP -MF”src/main.d” -MT”src/main.o” -c -o “src/main.o” “../src/main.c” Finished building: ../src/main.c

Building target: freeRTOS_gcc_stm32f3_c.elf
Invoking: Cross ARM C++ Linker
arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -ffreestanding -Wall -Wextra  -g -T mem.ld -T libs.ld -T sections.ld -nostartfiles -Xlinker --gc-sections -L"../ldscripts" -Wl,-Map,"freeRTOS_gcc_stm32f3_c.map" --specs=nano.specs -o "freeRTOS_gcc_stm32f3_c.elf"  ./system/src/stm32f3-stdperiph/stm32f30x_gpio.o ./system/src/stm32f3-stdperiph/stm32f30x_rcc.o  ./system/src/newlib/_cxx.o ./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o ./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o ./system/src/newlib/assert.o  ./system/src/freeRTOS/croutine.o ./system/src/freeRTOS/event_groups.o ./system/src/freeRTOS/heap_4.o ./system/src/freeRTOS/list.o ./system/src/freeRTOS/port.o ./system/src/freeRTOS/queue.o ./system/src/freeRTOS/tasks.o ./system/src/freeRTOS/timers.o  ./system/src/diag/Trace.o ./system/src/diag/trace_impl.o  ./system/src/cortexm/_initialize_hardware.o ./system/src/cortexm/_reset_hardware.o ./system/src/cortexm/exception_handlers.o  ./system/src/cmsis/system_stm32f30x.o ./system/src/cmsis/vectors_stm32f30x.o  ./src/_write.o ./src/main.o   
c:/program files (x86)/gnu tools arm embedded/4.9 2015q1/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/bin/ld.exe: freeRTOS_gcc_stm32f3_c.elf section `.bss' will not fit in region `RAM'
c:/program files (x86)/gnu tools arm embedded/4.9 2015q1/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/bin/ld.exe: region `RAM' overflowed by 36408 bytes
collect2.exe: error: ld returned 1 exit status
make: *** [freeRTOS_gcc_stm32f3_c.elf] Error 1
makefile:63: recipe for target 'freeRTOS_gcc_stm32f3_c.elf' failed

13:29:07 Build Finished (took 1s.188ms)

~~~~~~ As you see just overflowed byte quantity is incresed to 36408 bytes in C.

Which heapn.c file are you using (http://www.freertos.org/a00111.html)? What is configTOTALHEAP_SIZE set to? Regards.

I wasn’t looked TOTALHEAPSIZE. Here is the default defination: #define configTOTALHEAPSIZE ( ( size_t ) ( 75 * 1024 ) ) So it was 75k bytes 🙂 I’ve reduced heap to 1k now everything is alright. Thanks for your helps.

As configTOTALHEAPSIZE is making a difference I guess you are not using heap3 – in which case you will need more than 1K. Increase the size gradually until you get linker errors again, then reduce it a bit so it links. After that you can use xPortGetFreeHeapSize() and potentially xPortGetMinimumEverFreeHeapSize() to determine how much heap space you are actually using, and adjust configTOTALHEAP_SIZE accordingly. Regards.

Yes I’m using heap_4. Thank you for this important information. Regards.