where is defined extern uint32_t __SP_INIT;

[stefanomanca]

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.

[Jorge_Gonzalez]

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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