Stm32 (SWD) printf not working

[MPiul]

I'm new using stm32 microcontrollers, I have been trying to use the printf tracing in my code without success, anything is printed on the console . I can start a debug session, I can place breakpoints on my code, inspect variables and all works as expected but not the printf.

My setup :

I have reimplemented the _write method:

int _write(int32_t file, uint8_t *ptr, int32_t len)
 
{
 
/* Implement your write code here, this is used by puts and printf for example */
 
int i=0;
 
for(i=0 ; i<len ; i++)
 
ITM_SendChar((*ptr++));
 
return len;
 
}

and placed a breakpoint on :

I have reimplemented the _write method:
 
int _write(int32_t file, uint8_t *ptr, int32_t len)
{
/* Implement your write code here, this is used by puts and printf for example */
int i=0;
for(i=0 ; i<len ; i++)
ITM_SendChar((*ptr++));
return len;
 
}
and place a breakpoint on :
 
__STATIC_INLINE uint32_t ITM_SendChar (uint32_t ch)
{
 if (((ITM->TCR & ITM_TCR_ITMENA_Msk) != 0UL) && /* ITM enabled */
 ((ITM->TER & 1UL ) != 0UL) ) /* ITM Port #0 enabled */
 {
 while (ITM->PORT[0U].u32 == 0UL)
 {
 __NOP();
 }
 ITM->PORT[0U].u8 = (uint8_t)ch;
 }
 return (ch);
}
and ITM->PORT[0U].u8 = (uint8_t)ch; is being executed but no printf ouput in console.

and ITM->PORT[0U].u8 = (uint8_t)ch; is being executed but no printf ouput in console.

[Tesla DeLorean]

Core​ speed correct, really 8 MHz, not 72 MHz?

PB3/SWO pin wired?​

[MPiul]

I have tried both speeds, no luck either at 8 and 72Mhz.

PB3 ? I have conected PA14 and PA13