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About Min_Heap_Size and Min_Stack_Size

Question asked by Scott Shan on Nov 21, 2017
Latest reply on Nov 28, 2017 by Scott Shan


my STM32F302R8 Device with 64KByte FLASH, 16KByte RAM.

I configured Min_Heap_Size and Min_Stack_Size in file "stm32_flash.ld" as below.

_Min_Heap_Size = 0x400;
_Min_Stack_Size = 0x1000;

While build the project codes, below error was happened.


c:/emb_tool/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/bin/ld.exe: ./Release/my_app.elf section `._user_heap_stack' will not fit in region `RAM'
c:/emb_tool/gcc-arm-none-eabi/bin/../lib/gcc/arm-none-eabi/5.4.1/../../../../arm-none-eabi/bin/ld.exe: region `RAM' overflowed by 96 bytes
collect2.exe: error: ld returned 1 exit status
make: *** [all] Error 1


After changed _Min_Heap_Size from  0x400 to 0x200, re-bulid it and no more error.

Actually, I didn't know how to figure out the _Min_Heap_Size and _Min_Stack_Size.

Does any expert share the experience how to figure out the _Min_Heap_Size and _Min_Stack_Size?