#include "stm32l0xx.h"

unsigned long animTime;
unsigned long choreTime;
bool wasAlreadyClicked = false;
bool switchStart = false;

void pin_b_en(unsigned long portBPin, uint8_t pinBMode)
{
  GPIOB -> MODER &= ~(3UL << (portBPin * 2));
  GPIOB -> MODER |= (pinBMode << (portBPin * 2));
}

int main(void)
{
  RCC -> IOPENR |= RCC_IOPENR_GPIOBEN; //Проводка тока к порту В (все нужные для проекта пины + 3 слева)

  pin_b_en(3, 1); //D3
  pin_b_en(4, 1); //D4
  pin_b_en(5, 1); //D5
  pin_b_en(1, 0); //D6
  GPIOB -> PUPDR &= ~(3UL << (1 * 2));
  GPIOB -> PUPDR |= (1UL << (1 * 2));

  while(1)
  {
    if(wasAlreadyClicked || (GPIOB -> IDR & (1UL << 1)))
    {
      switchStart = true;

      switch(switchStart)
      {
      case 0:
      {
        wasAlreadyClicked = true;
        GPIOB -> ODR |= (1UL << 4);
      }

      default:
        GPIOB -> ODR |= (1UL << 4);
        break;
      }
    }
    else
    {
      switchStart = false;
    }
  }
}