where is defined extern uint32_t __SP_INIT;

stefanomanca — Tue, 01 Apr 2014 16:38:55 GMT

Hi, sorry for my banal question. I'm using codewarrior for kinetis kl15. Where is define extern uint32_t __SP_INIT;

I see sp=0x20003000 but where can I see this setting?

Thank you.

Re: where is defined extern uint32_t __SP_INIT;

Jorge_Gonzalez — Tue, 01 Apr 2014 18:08:37 GMT

Hello Stefano:

Never feel sorry about a question.

The __SP_INIT symbol is declared and initialized in the linker file (e.g. MKL15Z128_flash.ld). There you will find something like the next:


/* Highest address of the user mode stack */
_estack = 0x20003000;    /* end of SRAM */
__SP_INIT = _estack;

Hope this helps!

Regards!
Jorge Gonzalez

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where is defined extern uint32_t __SP_INIT;

Re: where is defined extern uint32_t __SP_INIT;