Why led isn't blinking when i press the button?

[YagciOnur]

I am tring to write a code for stm32f401cb which will blink the led when i press the led and when i leave pressing the button,it will turn out the led.I have set channel ahb1 which connects to port a and b in my microprocessor f401cb and i chose input type pull down in port a and led is connected to port b.

But my led is not blinking in anyway.

where is my mistake you think?

My led is not blinking when i press the button.it is always turned out

As you can see in the picture am holding the button but there is no response on the led.

Note:Port a is selected as input and port b is selected as output and both ports are controlled with their 0 (zero) pins.

my code is like that

Why i cant get a response on the led?

#include "stm32f4xx.h"

void ahb1_config(void) {
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);
}

void gpio_config(void) {
    GPIO_InitTypeDef gpio_init;
    gpio_init.GPIO_Mode=0x00;
    gpio_init.GPIO_Pin=GPIO_Pin_0 ;
    gpio_init.GPIO_OType=0x00;
    gpio_init.GPIO_PuPd=0x02;
    gpio_init.GPIO_Speed=0x03;
    GPIO_Init(GPIOA,&gpio_init);

    gpio_init.GPIO_Mode=GPIO_Mode_OUT;
    gpio_init.GPIO_Pin=GPIO_Pin_0 ;
    gpio_init.GPIO_OType=GPIO_OType_PP;
    gpio_init.GPIO_Speed=GPIO_Speed_100MHz;
    GPIO_Init(GPIOB,&gpio_init);


}







int main(void)
{







  while (1)
  {
        ahb1_config();
        gpio_config();
        if (GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_0)) {
            GPIO_SetBits(GPIOB,GPIO_Pin_0);
        }
        else {
            GPIO_ToggleBits(GPIOB,GPIO_Pin_0);
        }

  }
}

[Ozone]

The LED is blinking, you just can't see it.

        if (GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_0)) {
            GPIO_SetBits(GPIOB,GPIO_Pin_0);
        }
        else {
            GPIO_ToggleBits(GPIOB,GPIO_Pin_0);
        }

Try to measure how fast that loop executes.

Or else, simply insert a delay of 50 ... 1000ms. 

[Tesla DeLorean]

Start by having it set or clear based on the switch. Confirm that the switch and LED work.

Not sure is schematic is supposed to be complete, but have a pull down resistor on BOOT0 and a 4u7 capacitor on VCAP

[TDK]

LED needs a current limiting resistor otherwise it will instantly burn out.

Schematic is missing power and other things.

Debug, set a breakpoint within GPIO_ReadInputDataBit and see if it gets triggered when button is down.

GPIO_ToggleBits should be GPIO_ClearBits if you want the LED to turn off and stay off when button isn't held.