Merging default RAM-Blocks results in crash

jack5 — Tue, 24 Nov 2020 15:52:15 GMT

Hey

I am working with the LPC43S57.

My programm needs a lot of ram. By default there are 5 RAM-Block (RamLoc32, RamLoc40, RamAHB32, RamAHB16, RamAHB_ETB16). The Code in question requires a little less than 50kB. For this reason i thought i could merge the RAM-Blocks RamLoc32 and RamLoc40 to create a RamLoc72 Block.

This does make it possible to build the project (See attachement).

But when trying to debug the code the programm crashes for some reason (see attachements).

I created a default projekt, where the main() consists of a while(1)-loop incrementing an intereger, with and without the ram-merging. I was able to run/debug the code without the ram being merged but the default projekt crashed when being debugged when the ram had been merged.

What part am I missing?

Thanks a lot.

Jack

Re: Merging default RAM-Blocks results in crash

jack5 — Tue, 24 Nov 2020 16:07:47 GMT

The content of the linker file:

/*
* GENERATED FILE - DO NOT EDIT
* (c) Code Red Technologies Ltd, 2008-2013
* (c) NXP Semiconductors 2013-2020
* Generated linker script file for LPC43S57
* Created from linkscript.ldt by FMCreateLinkLibraries
* Using Freemarker v2.3.23
* LPCXpresso v8.2.2 [Build 650] [2016-09-09] on 24.11.2020 16:40:39
*/

INCLUDE "vogelprojekt_Debug_library.ld"
INCLUDE "vogelprojekt_Debug_memory.ld"

ENTRY(ResetISR)

SECTIONS
{
.text_Flash2 : ALIGN(4)
{
FILL(0xff)
*(.text_Flash2*) /* for compatibility with previous releases */
*(.text_MFlashB512*) /* for compatibility with previous releases */
*(.text.$Flash2*)
*(.text.$MFlashB512*)
*(.rodata.$Flash2*)
*(.rodata.$MFlashB512*)
} > MFlashB512

/* MAIN TEXT SECTION */
.text : ALIGN(4)
{
FILL(0xff)
__vectors_start__ = ABSOLUTE(.) ;
KEEP(*(.isr_vector))
/* Global Section Table */
. = ALIGN(4) ;
__section_table_start = .;
__data_section_table = .;
LONG(LOADADDR(.data));
LONG( ADDR(.data));
LONG( SIZEOF(.data));
LONG(LOADADDR(.data_RAM2));
LONG( ADDR(.data_RAM2));
LONG( SIZEOF(.data_RAM2));
LONG(LOADADDR(.data_RAM3));
LONG( ADDR(.data_RAM3));
LONG( SIZEOF(.data_RAM3));
LONG(LOADADDR(.data_RAM4));
LONG( ADDR(.data_RAM4));
LONG( SIZEOF(.data_RAM4));
__data_section_table_end = .;
__bss_section_table = .;
LONG( ADDR(.bss));
LONG( SIZEOF(.bss));
LONG( ADDR(.bss_RAM2));
LONG( SIZEOF(.bss_RAM2));
LONG( ADDR(.bss_RAM3));
LONG( SIZEOF(.bss_RAM3));
LONG( ADDR(.bss_RAM4));
LONG( SIZEOF(.bss_RAM4));
__bss_section_table_end = .;
__section_table_end = . ;
/* End of Global Section Table */

*(.after_vectors*)

/* Code Read Protection data */
. = 0x000002FC ;
PROVIDE(__CRP_WORD_START__ = .) ;
KEEP(*(.crp))
PROVIDE(__CRP_WORD_END__ = .) ;
ASSERT(!(__CRP_WORD_START__ == __CRP_WORD_END__), "Linker CRP Enabled, but no CRP_WORD provided within application");
/* End of Code Read Protection */
} >MFlashA512

.text : ALIGN(4)
{
*(.text*)
*(.rodata .rodata.* .constdata .constdata.*)
. = ALIGN(4);
} > MFlashA512
/*
* for exception handling/unwind - some Newlib functions (in common
* with C++ and STDC++) use this.
*/
.ARM.extab : ALIGN(4)
{
*(.ARM.extab* .gnu.linkonce.armextab.*)
} > MFlashA512
__exidx_start = .;

.ARM.exidx : ALIGN(4)
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} > MFlashA512
__exidx_end = .;

_etext = .;

/* DATA section for RamAHB32 */
.data_RAM2 : ALIGN(4)
{
FILL(0xff)
PROVIDE(__start_data_RAM2 = .) ;
*(.ramfunc.$RAM2)
*(.ramfunc.$RamAHB32)
*(.data.$RAM2*)
*(.data.$RamAHB32*)
. = ALIGN(4) ;
PROVIDE(__end_data_RAM2 = .) ;
} > RamAHB32 AT>MFlashA512

/* DATA section for RamAHB16 */
.data_RAM3 : ALIGN(4)
{
FILL(0xff)
PROVIDE(__start_data_RAM3 = .) ;
*(.ramfunc.$RAM3)
*(.ramfunc.$RamAHB16)
*(.data.$RAM3*)
*(.data.$RamAHB16*)
. = ALIGN(4) ;
PROVIDE(__end_data_RAM3 = .) ;
} > RamAHB16 AT>MFlashA512

/* DATA section for RamAHB_ETB16 */
.data_RAM4 : ALIGN(4)
{
FILL(0xff)
PROVIDE(__start_data_RAM4 = .) ;
*(.ramfunc.$RAM4)
*(.ramfunc.$RamAHB_ETB16)
*(.data.$RAM4*)
*(.data.$RamAHB_ETB16*)
. = ALIGN(4) ;
PROVIDE(__end_data_RAM4 = .) ;
} > RamAHB_ETB16 AT>MFlashA512

/* MAIN DATA SECTION */
.uninit_RESERVED : ALIGN(4)
{
KEEP(*(.bss.$RESERVED*))
. = ALIGN(4) ;
_end_uninit_RESERVED = .;
} > RamLoc72
/* Main DATA section (RamLoc72) */
.data : ALIGN(4)
{
FILL(0xff)
_data = . ;
*(vtable)
*(.ramfunc*)
*(.data*)
. = ALIGN(4) ;
_edata = . ;
} > RamLoc72 AT>MFlashA512
/* BSS section for RamAHB32 */
.bss_RAM2 : ALIGN(4)
{
PROVIDE(__start_bss_RAM2 = .) ;
*(.bss.$RAM2*)
*(.bss.$RamAHB32*)
. = ALIGN (. != 0 ? 4 : 1) ; /* avoid empty segment */
PROVIDE(__end_bss_RAM2 = .) ;
} > RamAHB32
/* BSS section for RamAHB16 */
.bss_RAM3 : ALIGN(4)
{
PROVIDE(__start_bss_RAM3 = .) ;
*(.bss.$RAM3*)
*(.bss.$RamAHB16*)
. = ALIGN (. != 0 ? 4 : 1) ; /* avoid empty segment */
PROVIDE(__end_bss_RAM3 = .) ;
} > RamAHB16
/* BSS section for RamAHB_ETB16 */
.bss_RAM4 : ALIGN(4)
{
PROVIDE(__start_bss_RAM4 = .) ;
*(.bss.$RAM4*)
*(.bss.$RamAHB_ETB16*)
. = ALIGN (. != 0 ? 4 : 1) ; /* avoid empty segment */
PROVIDE(__end_bss_RAM4 = .) ;
} > RamAHB_ETB16
/* MAIN BSS SECTION */
.bss : ALIGN(4)
{
_bss = .;
*(.bss*)
*(COMMON)
. = ALIGN(4) ;
_ebss = .;
PROVIDE(end = .);
} > RamLoc72
/* NOINIT section for RamAHB32 */
.noinit_RAM2 (NOLOAD) : ALIGN(4)
{
*(.noinit.$RAM2*)
*(.noinit.$RamAHB32*)
. = ALIGN(4) ;
} > RamAHB32
/* NOINIT section for RamAHB16 */
.noinit_RAM3 (NOLOAD) : ALIGN(4)
{
*(.noinit.$RAM3*)
*(.noinit.$RamAHB16*)
. = ALIGN(4) ;
} > RamAHB16
/* NOINIT section for RamAHB_ETB16 */
.noinit_RAM4 (NOLOAD) : ALIGN(4)
{
*(.noinit.$RAM4*)
*(.noinit.$RamAHB_ETB16*)
. = ALIGN(4) ;
} > RamAHB_ETB16
/* DEFAULT NOINIT SECTION */
.noinit (NOLOAD): ALIGN(4)
{
_noinit = .;
*(.noinit*)
. = ALIGN(4) ;
_end_noinit = .;
} > RamLoc72

PROVIDE(_pvHeapStart = DEFINED(__user_heap_base) ? __user_heap_base : .);
PROVIDE(_vStackTop = DEFINED(__user_stack_top) ? __user_stack_top : __top_RamLoc72 - 0);

/* ## Create checksum value (used in startup) ## */
PROVIDE(__valid_user_code_checksum = 0 -
(_vStackTop
+ (ResetISR + 1)
+ (NMI_Handler + 1)
+ (HardFault_Handler + 1)
+ (( DEFINED(MemManage_Handler) ? MemManage_Handler : 0 ) + 1) /* MemManage_Handler may not be defined */
+ (( DEFINED(BusFault_Handler) ? BusFault_Handler : 0 ) + 1) /* BusFault_Handler may not be defined */
+ (( DEFINED(UsageFault_Handler) ? UsageFault_Handler : 0 ) + 1) /* UsageFault_Handler may not be defined */
) );
}

Re: Merging default RAM-Blocks results in crash

converse — Tue, 24 Nov 2020 17:07:28 GMT

It looks like you have merged RamLoc32 and RamLoc40 - but they are not contiguous!

RamLoc32 is 32k from 0x10000000 - 0x10007fff

RamLoc40 is 40k from 0x10080000 - 0x1008a000

Note RamLoc32 'ends' at 0x10008000 and RamLoc40 starts at 0x10080000 (count the zeros!)

Re: Merging default RAM-Blocks results in crash

jack5 — Wed, 25 Nov 2020 12:26:28 GMT

thanks

that did the trick. further, i was able to join RamAHB32, RamAHB16 und RamAHB_ETB16

LPC MicrocontrollersのトピックRe: Merging default RAM-Blocks results in crash

Merging default RAM-Blocks results in crash

Re: Merging default RAM-Blocks results in crash

Re: Merging default RAM-Blocks results in crash

Re: Merging default RAM-Blocks results in crash