nRF52832 (SDK 11.0.0): Best way to reduce the Heap Size to 0 bytes

[Sami]

Hi All,

Our application WILL NEVER dynamically allocate memory and thus we'll never need to use the heap. Currently, our SDK carves out 8K of memory for the heap in "gcc_startup_nrf52.s". Which file do I have to modify in order to zero out the heap size? I'm currently inspecting the .map file in order to observe our heap's usage. Our application needs more RAM!

Thanks!

[tesc]

Hi,

If you use make, add __HEAP_SIZE=0 to ASMFLAGS (i.e. ASMFLAGS += -D__HEAP_SIZE=0).

If you use Segger Embedded Studio, you can set "Heap Size" in the project Options ("Project" menu -> "Edit Options..."), under "Code" -> "Runtime Memory Area".

Regards,
Terje

[Yasaswini]

Hi, may i know where to find the ASMFLAGS??

[tesc]

Hi,

That would be for using armgcc and make, and you will find several lines beginning with "ASMFLAGS += " in the Makefile. The line should be added in the Makefile, together with those other similar entries.

Regards,
Terje