Posted on August 07, 2014 at 18:36Hi,
I'm newbie to STM32. I use Keil to program my Nucleo F401RE board. The program simply change the LED (PA05) blinking rate when user button (PC13) is pressed. I used HAL_SYSTICK_Callback() and HAL_GPIO_EXTI_Callback(). It works fine as expected. However, I notice that pin PC10 keep swinging low high every 2 seconds although it was not configured to do so. I removed all the code until only 3 lines like below but it still swings:
int main()
{
HAL_Init();
__GPIOC_CLK_ENABLE();
while(1){}
}
What's the problem with the pin?
Thanks
