Arduino for STM32

Posted: **Mon Apr 27, 2020 4:35 pm**

Hi guys, I'm glad to see the forum being back up.

I'm trying to compile this sketch : https://github.com/stm32duino/STM32Exam ... istics.ino

And getting this error:

free_memory_3:30:38: error: '_get_MSP' was not declared in this scope

   char * stack_ptr = (char*)_get_MSP();

                                      ^

exit status 1
'_get_MSP' was not declared in this scope

I'm using Roger's core.

Any ideas?

Posted: **Mon Apr 27, 2020 5:34 pm**

that example is for HAL based core, probably roger's core gcc doesn't support it
but it's not a problem

Code: Select all

__attribute__( ( always_inline ) ) __STATIC_INLINE uint32_t __get_MSP(void)
{
  register uint32_t result;

  __ASM volatile ("MRS %0, msp\n" : "=r" (result) );
  return(result);
}

Posted: **Mon Apr 27, 2020 10:03 pm**

Thank you very much stas2z.

But where should I put this code?

Arduino for STM32

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