topic Re: How to define variable on same RAM area? in MCUXpresso IDE

How to define variable on same RAM area?

leilovelei100 — Sat, 27 May 2017 02:01:39 GMT

I want to define two array on some RAM area.

__attribute__ ((section(".mysection1"))) char test1[128] = "aaaaaaa";

__attribute__ ((section(".mysection2"))) char test2[128] = "bbbbbbb";

.mysection1 ORIGIN(SRAM_UPPER_96): ALIGN(4)

{

. += 0;

. = ALIGN(4) ;

} > SRAM_UPPER_96

.mysection2 ORIGIN(SRAM_UPPER_96) : ALIGN(4)

{

. += 0;

. = ALIGN(4) ;

} > SRAM_UPPER_96

but it comes error: arm-none-eabi/bin/ld.exe: section .mysection2 loaded at [20018000,2001807f] overlaps section .mysection1 loaded at [20018000,2001817f]

what shall I do? thanks!

Re: How to define variable on same RAM area?

lpcxpresso_supp — Sun, 28 May 2017 19:50:51 GMT

Take a look at the __DATA / __BSS macros provided by MCUXpresso IDE's cr_section_macros.h header file. For more details see section 12.9.6 "Placement of specific code/data items" in the MCUXpresso IDE v10.0.0 User Guide.

Regards,

MCUXpresso IDE Support