#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define DEBOUNCE_DELAY_MS  50   // задержка для подавления дребезга (50 мс)
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
I2C_HandleTypeDef hi2c1;
UART_HandleTypeDef huart1;

/* USER CODE BEGIN PV */
static uint8_t currentMode = 0;   // 0 – горят LD3+LD5, 1 – горят LD4+LD6
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_I2C1_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
static void UpdateLEDs(void)
{
    if (currentMode == 0)
    {
        HAL_GPIO_WritePin(LD3_GPIO_Port, LD3_PIN, GPIO_PIN_SET);
        HAL_GPIO_WritePin(LD5_GPIO_Port, LD5_PIN, GPIO_PIN_SET);
        HAL_GPIO_WritePin(LD4_GPIO_Port, LD4_PIN, GPIO_PIN_RESET);
        HAL_GPIO_WritePin(LD6_GPIO_Port, LD6_PIN, GPIO_PIN_RESET);
    }
    else
    {
        HAL_GPIO_WritePin(LD4_GPIO_Port, LD4_PIN, GPIO_PIN_SET);
        HAL_GPIO_WritePin(LD6_GPIO_Port, LD6_PIN, GPIO_PIN_SET);
        HAL_GPIO_WritePin(LD3_GPIO_Port, LD3_PIN, GPIO_PIN_RESET);
        HAL_GPIO_WritePin(LD5_GPIO_Port, LD5_PIN, GPIO_PIN_RESET);
    }
}
/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
    /* USER CODE BEGIN 1 */
    GPIO_PinState lastStableState;   
    GPIO_PinState currentReading;
    /* USER CODE END 1 */

    HAL_Init();
    SystemClock_Config();

    MX_GPIO_Init();
    MX_I2C1_Init();
    MX_USART1_UART_Init();

    /* USER CODE BEGIN 2 */
    currentMode = 0;
    UpdateLEDs();

    lastStableState = HAL_GPIO_ReadPin(User_Button_GPIO_Port, User_Button_Pin);
    HAL_Delay(DEBOUNCE_DELAY_MS);
    if (HAL_GPIO_ReadPin(User_Button_GPIO_Port, User_Button_Pin) != lastStableState)
    {
        lastStableState = HAL_GPIO_ReadPin(User_Button_GPIO_Port, User_Button_Pin);
        HAL_Delay(DEBOUNCE_DELAY_MS);
    }
    /* USER CODE END 2 */

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

        currentReading = HAL_GPIO_ReadPin(User_Button_GPIO_Port, User_Button_Pin);

        if (currentReading != lastStableState)
        {
            HAL_Delay(DEBOUNCE_DELAY_MS);

            currentReading = HAL_GPIO_ReadPin(User_Button_GPIO_Port, User_Button_Pin);

            if (currentReading != lastStableState)
            {
                if (lastStableState == GPIO_PIN_SET && currentReading == GPIO_PIN_RESET)
                {
                    currentMode = !currentMode;
                    UpdateLEDs();
                }
                lastStableState = currentReading;
            }
        }
        HAL_Delay(10);
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
    }
    /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
    RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
    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.SYSCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV1;

    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
    {
        Error_Handler();
    }
}

/**
  * @brief I2C1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_I2C1_Init(void)
{
    hi2c1.Instance = I2C1;
    hi2c1.Init.Timing = 0x20303E5D;
    hi2c1.Init.OwnAddress1 = 0;
    hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
    hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
    hi2c1.Init.OwnAddress2 = 0;
    hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
    hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
    hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
    if (HAL_I2C_Init(&hi2c1) != HAL_OK)
    {
        Error_Handler();
    }

    if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
    {
        Error_Handler();
    }

    if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
    {
        Error_Handler();
    }
}

/**
  * @brief USART1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_USART1_UART_Init(void)
{
    huart1.Instance = USART1;
    huart1.Init.BaudRate = 115200;
    huart1.Init.WordLength = UART_WORDLENGTH_8B;
    huart1.Init.StopBits = UART_STOPBITS_1;
    huart1.Init.Parity = UART_PARITY_NONE;
    huart1.Init.Mode = UART_MODE_TX_RX;
    huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart1.Init.OverSampling = UART_OVERSAMPLING_16;
    huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
    huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
    huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
    if (HAL_UART_Init(&huart1) != HAL_OK)
    {
        Error_Handler();
    }
    if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
    {
        Error_Handler();
    }
    if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
    {
        Error_Handler();
    }
    if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
    {
        Error_Handler();
    }
}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStruct = {0};

    __HAL_RCC_GPIOC_CLK_ENABLE();
    __HAL_RCC_GPIOF_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();

    // Кнопка: вход с подтяжкой вверх
    GPIO_InitStruct.Pin = User_Button_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    HAL_GPIO_Init(User_Button_GPIO_Port, &GPIO_InitStruct);

    // LD2 (не используется) – выход
    GPIO_InitStruct.Pin = Led_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    HAL_GPIO_Init(Led_GPIO_Port, &GPIO_InitStruct);
    HAL_GPIO_WritePin(Led_GPIO_Port, Led_Pin, GPIO_PIN_SET);

    // LD3..LD6 – выходы
    GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
}

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
    __disable_irq();
    while (1)
    {
    }
}

#ifdef  USE_FULL_ASSERT
void assert_failed(uint8_t *file, uint32_t line)
{
}
#endif /* USE_FULL_ASSERT */