How to place a variable at a given absolute address in memory with STM32CubeIDE

Thank you for your prompt reply.

I have a piece of code , such as

//-----------------------------------------------------------------------------------------------------------

__align(32) u8 mem2base[MEM2_MAX_SIZE] __attribute__((at(0X60000000)));

//-----------------------------------------------------------------------------------------------------------

There is a align directive ,so I don't think I can use the point.

I will use the attribute directive and section naming that you mentioned.

Thanks

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Yes, it's a SRAM address.

Thanks, I solved the issue by changing the link script file, add section directive.

It's a pointer method, it works the way pointers do, perhaps K&R chapter on such things?

typedef struct _CONFIG_STRUCT {
 uint32_t a;
 uint32_t b;
 uint32_t c[12];
 
 uint32_t checksum;
} CONFIG_STRUCT;
 
CONFIG_STRUCT *cfg = (CONFIG_STRUCT *)0x60001000;
 
 
cfg->checksum = 1234;
cfg->a = 1;
cfg->b = 2;
 
printf("%d\n", cfg->b);
 
int foo = cfg->a;
 
...

Your use case seems different to that of the OP, where the use of AT directives in code or linker script were not portable.

Not clear at all what you're trying to achieve.

Perhaps you should change the RAM base that the linker starts using in the Linker Script (.LD) to carve out whatever space it is you want to use, and have the startup.s code leave alone.