Having problem of region RAM overflowed with stack

RE: Having problem of region RAM overflowed with stack

Elm — Tue, 17 May 2016 12:36:17 GMT

For GCC, is the line correct? Should it not be LDFLAGS instead of ASMFLAGS? I guess it is the linker that wants this line.

RE: Having problem of region RAM overflowed with stack

bjorn-spockeli — Tue, 19 Jan 2016 12:08:04 GMT

Click the circle with check mark(turns green when you hower the mouse over it to) the left of the answer below.

RE: Having problem of region RAM overflowed with stack

adrianwong — Tue, 19 Jan 2016 11:49:17 GMT

how to mark?

RE: Having problem of region RAM overflowed with stack

bjorn-spockeli — Tue, 19 Jan 2016 11:46:55 GMT

Great! Could you mark the answer below as correct?

RE: Having problem of region RAM overflowed with stack

adrianwong — Tue, 19 Jan 2016 11:34:25 GMT

Yes. Thanks. now i facing another problem and i posted it to the forum

RE: Having problem of region RAM overflowed with stack

bjorn-spockeli — Tue, 19 Jan 2016 11:32:09 GMT

Did it fix the issue?

RE: Having problem of region RAM overflowed with stack

adrianwong — Tue, 19 Jan 2016 10:51:49 GMT

Thanks a lot, Bjorn.

RE: Having problem of region RAM overflowed with stack

bjorn-spockeli — Tue, 19 Jan 2016 08:46:48 GMT

Neither the SoftDevice or the SDK does not use Heap. As long as you are not using dynamic memory allocation ( i.e. malloc ) you can reduce the heap size to 0.

RE: Having problem of region RAM overflowed with stack

adrianwong — Tue, 19 Jan 2016 03:04:41 GMT

Should I reduce the heap size straight away from 256 to 0?

RE: Having problem of region RAM overflowed with stack

bjorn-spockeli — Mon, 18 Jan 2016 12:48:16 GMT

The heap size can be changed by editing line 59 in the startup_NRF51822.S file from

    .equ    Heap_Size, 256

    .equ    Heap_Size, 0

RE: Having problem of region RAM overflowed with stack

adrianwong — Mon, 18 Jan 2016 03:19:25 GMT

No. I'm using compiling the code in Arduino IDE together with this driver github.com/.../nRF51822-Arduino and upload to nrf51822 module. Is there any way to change the heap size?

RE: Having problem of region RAM overflowed with stack

bjorn-spockeli — Fri, 15 Jan 2016 12:26:03 GMT

Are you developing using Keil or GCC?

Keil: Try adding__HEAP_SIZE = 0 to your Preprocessor Symbols ( Options for Target >> C/C++ >> Preproccesor Symbols).
GCC: Add ASMFLAGS += -D__HEAP_SIZE=0 to your linker flags in the Makefile