Posted on August 12, 2013 at 21:48
Hello guys,
I need some help. I want to create a large buffer in the sram and I'm having some problems with the compiler. I want to use the 112KB SRAM memory (pag 52 - RM0090) for my buffer. But when I want to create a buffer of 35000Bytes I get this error:
CoIDE errors:
[...]/arm-none-eabi/bin/ld.exe: uIP 1.elf section `.co_stack' will not fit in region `ram'
[...]/arm-none-eabi/bin/ld.exe: region `ram' overflowed by 3232 bytes
After search and read a lot I found a couple of helpful topics, like this one. The thing is that my linker looks different and, as I don't know anything about lkr files, I don't know what to do. This is my lkr.
OUTPUT_FORMAT (''elf32-littlearm'', ''elf32-bigarm'', ''elf32-littlearm'')
/* Internal Memory Map*/
MEMORY
{
rom (rx) : ORIGIN = 0x08000000, LENGTH = 0x00100000
ram (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00020000
ram1 (rwx) : ORIGIN = 0x10000000, LENGTH = 0x00010000
}
_eram = 0x20000000 + 0x00020000;
/* Section Definitions */
SECTIONS
{
.text :
{
KEEP(*(.isr_vector .isr_vector.*))
*(.text .text.* .gnu.linkonce.t.*)
*(.glue_7t) *(.glue_7)
*(.rodata .rodata* .gnu.linkonce.r.*)
} > rom
.ARM.extab :
{
*(.ARM.extab* .gnu.linkonce.armextab.*)
} > rom
__exidx_start = .;
.ARM.exidx :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} > rom
__exidx_end = .;
. = ALIGN(4);
_etext = .;
_sidata = .;
.data : AT (_etext)
{
_sdata = .;
*(.data .data.*)
. = ALIGN(4);
_edata = . ;
} > ram
/* .bss section which is used for uninitialized data */
.bss (NOLOAD) :
{
_sbss = . ;
*(.bss .bss.*)
*(COMMON)
. = ALIGN(4);
_ebss = . ;
} > ram
/* stack section */
.co_stack (NOLOAD):
{
. = ALIGN(8);
*(.co_stack .co_stack.*)
} > ram
. = ALIGN(4);
_end = . ;
}
And I use the same declaration as
van_hooft.frank.001
volatile uint8_t buffer[35000] __attribute__((section(''.buffram'')));
I'm very confused because I know I don't have a buffram section defined in my lkr. So I used this other declaration:
volatile uint8_t buffer[35000] __attribute__((section(''.co_stack'')));
with same results.
So please, does anyone can help me to create a buffer as big as possible?
Best Regards!
#stm32f4
