I can't blink my leds in H755ZI Nucleo board

[icaro_mendes00]

I bought a NUCLEO H755ZI board, but I can't make the LED connected to GPIOB pin 14 blink, neither with CMSIS nor with HAL, I saw some tutorials and questions here, but nothing solved it, thank you in advance for your help.

[Tesla DeLorean]

Single Step the code, or observe with a scope

At several million cycles a second, this is not going to create a perceivable delay, and advances i twice in the loop

void Delay_ms(int ms)
{
	uint32_t i;

	for(i = 0; i < ms; i++)
	{
		i++;
	}
}// end Delay_ms

[FBL]

Hi @icaro_mendes00 

Did you check if R75 for LD3 is fitted? Do you have the same issue with other leds?

[icaro_mendes00]

There is a resistor R26 next to LD3, would that be it? Or is it necessary to configure it in some specific way? And the same happens with other LEDs (LD1 and LD2)

[MM..1 · Accepted solution]

Debug your code ... is while toggle run???

[icaro_mendes00]

I use the STLINK Utility, and works, but why?