STM32-Stepper Motor-ULN2003

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
const uint8_t turn[] = {0x02, 0x06, 0x04, 0x0C, 0x08, 0x09, 0x01, 0x03};
uint8_t i = 0;
uint32_t adc_value = 0;
uint32_t delay ;
/* USER CODE END PD */

/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef hadc1;
DMA_HandleTypeDef hdma_adc1;

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_ADC1_Init(void);
/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
  /* Configure the system clock */
  SystemClock_Config();
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_ADC1_Init();

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
      if (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_1) == GPIO_PIN_RESET)
          {
            i = (i < 7) ? i + 1 : 0;
            GPIOB->ODR = turn[i];
            HAL_Delay(100);
          }
      else if (HAL_GPIO_ReadPin(GPIOA, GPIO_PIN_2) == GPIO_PIN_RESET)
          {
            i = (i > 0) ? i - 1 : 7;
            GPIOB->ODR = turn[i];
            HAL_Delay(100);
          }

  }
  /* USER CODE END 3 */
}