#include "stm32l0xx_hal.h"
#include <cstdint>

class Led {
public:
    Led(GPIO_TypeDef* con, uint32_t pn) : c{con}, p{pn}, pp{pn} {}
    void led_conect()
    {   
        GPIO_InitTypeDef my_led_set;
        my_led_set.Pin = p;
        my_led_set.Mode = GPIO_MODE_OUTPUT_PP;
        my_led_set.Pull = GPIO_NOPULL;
        my_led_set.Speed = GPIO_SPEED_FREQ_LOW;
        HAL_GPIO_Init(c, &my_led_set);
    }

    void led_toggle()
    {
        HAL_GPIO_TogglePin(c, pp);
    }

    void delay_time(int i)
    {
        HAL_Delay(i);
    }
private:
    GPIO_TypeDef* c;
    uint32_t p;  
    uint16_t pp;  
};

int main(void) {
    HAL_Init();
    Led led(GPIOB,GPIO_PIN_3); 
    led.led_conect();

    while (1) {
        led.led_toggle();
        led.delay_time(500);
    }
}