#include "stm32c0xx_hal.h"

void SystemClock_Config(void);
static void MX_GPIO_Init(void);

const struct {
  uint16_t Pin;
  GPIO_TypeDef *Port;
  } my_ledseg_pinout[7U] = {
    {GPIO_PIN_2, GPIOA},
    {GPIO_PIN_0, GPIOA},
    {GPIO_PIN_14, GPIOC},
    {GPIO_PIN_13, GPIOC},
    {GPIO_PIN_1, GPIOB},
    {GPIO_PIN_4, GPIOA},
    {GPIO_PIN_1, GPIOA}
};

typedef union tagLEDSEG_Digit {
  uint32_t IntValue : 7U;
} LEDSEG_Digit;

int main(void)
{
    // "2" (B enabled)
    static const LEDSEG_Digit digit1 = {0B0010010};
    // "0" (E enabled for the second digit)
    static const LEDSEG_Digit digit2 = {0B0000001};

    HAL_Init();
    SystemClock_Config();
    MX_GPIO_Init();

    while (1)
    {
        HAL_Delay(400);
        for (uint8_t i = 0; i < 7U; ++i)
        {
            HAL_GPIO_WritePin(
                my_ledseg_pinout[i].Port,
                my_ledseg_pinout[i].Pin,
                (GPIO_PinState)((((uint8_t)digit1.IntValue) >> i) & GPIO_PIN_SET));
        }
        HAL_GPIO_WritePin(GPIOD, GPIO_PIN_0, !HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_0));
        HAL_Delay(400);
        HAL_GPIO_WritePin(GPIOD, GPIO_PIN_0, !HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_0));
        HAL_Delay(400);
        for (uint8_t i = 0; i < 7U; ++i)
        {
            HAL_GPIO_WritePin(
                my_ledseg_pinout[i].Port,
                my_ledseg_pinout[i].Pin,
                (GPIO_PinState)((((uint8_t)digit2.IntValue) >> i) & GPIO_PIN_SET));
        }
        HAL_GPIO_WritePin(GPIOD, GPIO_PIN_1, !HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_1));
        HAL_Delay(400);
        HAL_GPIO_WritePin(GPIOD, GPIO_PIN_1, !HAL_GPIO_ReadPin(GPIOD, GPIO_PIN_1));
    }
}

void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct;
  RCC_ClkInitTypeDef RCC_ClkInitStruct;

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;

  // Correction : Supprimer la ligne RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;

  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK |
                                RCC_CLOCKTYPE_PCLK1;

  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
    Error_Handler();
  }
}


static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct;

  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();

  // Configure each GPIO pin
  for (uint8_t i = 0; i < 7U; ++i)
  {
    GPIO_InitStruct.Pin = my_ledseg_pinout[i].Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

    HAL_GPIO_Init(my_ledseg_pinout[i].Port, &GPIO_InitStruct);
  }

  GPIO_InitStruct.Pin = GPIO_PIN_0 | GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

  HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
}

void Error_Handler(void)
{
  while (1)
  {
    
  }
}

#ifdef  USE_FULL_ASSERT

void assert_failed(uint8_t* file, uint32_t line)
{ 

}
#endif /* USE_FULL_ASSERT */