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Incorrect internal clock signal

Question asked by sebastien.guignard on Oct 22, 2015
Latest reply on Oct 23, 2015 by Jacobs.Carl.001
Hello !!!
I would recover my internal clock signal (configure to 16MHz)  with  an oscilloscope when I switch a pin of my microcontroller the signal is only of 450khz. Could someone explain to me why I don't  exceed the 450khz ?

my main program :

int main(void)

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */

  /* Configure the system clock */

  /* Initialize all configured peripherals */

  while (1)
    HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_5);


Thank you in advance and sorry for my poor english .