text: /* USER CODE BEGIN Header */
  /**
    ******************************************************************************
    * @file           : main.c
    * @brief          : Main program body
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2019 STMicroelectronics.
    * All rights reserved.</center></h2>
    *
    * This software component is licensed by ST under Ultimate Liberty license
    * SLA0044, the "License"; You may not use this file except in compliance with
    * the License. You may obtain a copy of the License at:
    *                             www.st.com/SLA0044
    *
    ******************************************************************************
    */
  /* USER CODE END Header */
  
  /* Includes ------------------------------------------------------------------*/
  #include "main.h"
  #include "usb_host.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 */
  
  /* USER CODE END PD */
  
  /* Private macro -------------------------------------------------------------*/
  /* USER CODE BEGIN PM */
  
  /* USER CODE END PM */
  
  /* Private variables ---------------------------------------------------------*/
  I2C_HandleTypeDef hi2c1;
  
  I2S_HandleTypeDef hi2s3;
  
  SPI_HandleTypeDef hspi1;
  
  UART_HandleTypeDef huart2;
  
  /* USER CODE BEGIN PV */
  
  /* 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_I2S3_Init(void);
  static void MX_SPI1_Init(void);
  static void MX_USART2_UART_Init(void);
  void MX_USB_HOST_Process(void);
  
  /* USER CODE BEGIN PFP */
  
  /* USER CODE END PFP */
  
  /* Private user code ---------------------------------------------------------*/
  /* USER CODE BEGIN 0 */
  char buffer[4];
  
  /* USER CODE END 0 */
  
  /**
    * @brief  The application entry point.
    * @retval int
    */
  int main(void)
  {
    /* USER CODE BEGIN 1 */
  
    /* USER CODE END 1 */
    
  
    /* MCU Configuration--------------------------------------------------------*/
  
    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    HAL_Init();
  
    /* USER CODE BEGIN Init */
  
  
    /* USER CODE END Init */
  
    /* Configure the system clock */
    SystemClock_Config();
  
    /* USER CODE BEGIN SysInit */
  
    /* USER CODE END SysInit */
  
    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_I2C1_Init();
    MX_I2S3_Init();
    MX_SPI1_Init();
    MX_USB_HOST_Init();
    MX_USART2_UART_Init();
    /* USER CODE BEGIN 2 */
  
    /* USER CODE END 2 */
  
    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while (1)
    {
  	  if(HAL_UART_Receive(&huart2, &buffer, 4, 1000)== HAL_OK){
  		  LightHandler(buffer);
  	  }
  	  	  HAL_Delay(10);
      /* USER CODE END WHILE */
      MX_USB_HOST_Process();
  
      /* USER CODE BEGIN 3 */
    }
    /* USER CODE END 3 */
  }
  
  /**
    * @brief System Clock Configuration
    * @retval None
    */
  
  void LightHandler(char command[4])
  {
  	uint16_t pinarr[4] = {LD4_Pin, LD3_Pin, LD5_Pin, LD6_Pin};
  	for(int i=0;i<4;i++)
  	{
  		if(command[i]=='0')HAL_GPIO_WritePin(GPIOD, pinarr[i], GPIO_PIN_RESET);
  		else if(command[i]=='2')HAL_GPIO_WritePin(GPIOD, pinarr[i], GPIO_PIN_SET);
  	}
  }
  void SystemClock_Config(void)
  {
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
    RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
  
    /** Configure the main internal regulator output voltage 
    */
    __HAL_RCC_PWR_CLK_ENABLE();
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
    /** Initializes the CPU, AHB and APB busses clocks 
    */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
    RCC_OscInitStruct.HSEState = RCC_HSE_ON;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
    RCC_OscInitStruct.PLL.PLLM = 8;
    RCC_OscInitStruct.PLL.PLLN = 336;
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
    RCC_OscInitStruct.PLL.PLLQ = 7;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
      Error_Handler();
    }
    /** Initializes the CPU, AHB and APB busses clocks 
    */
    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                                |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
  
    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
    {
      Error_Handler();
    }
    PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_I2S;
    PeriphClkInitStruct.PLLI2S.PLLI2SN = 192;
    PeriphClkInitStruct.PLLI2S.PLLI2SR = 2;
    if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
    {
      Error_Handler();
    }
  }
  
  /**
    * @brief I2C1 Initialization Function
    * @param None
    * @retval None
    */
  static void MX_I2C1_Init(void)
  {
  
    /* USER CODE BEGIN I2C1_Init 0 */
  
    /* USER CODE END I2C1_Init 0 */
  
    /* USER CODE BEGIN I2C1_Init 1 */
  
    /* USER CODE END I2C1_Init 1 */
    hi2c1.Instance = I2C1;
    hi2c1.Init.ClockSpeed = 100000;
    hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
    hi2c1.Init.OwnAddress1 = 0;
    hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
    hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
    hi2c1.Init.OwnAddress2 = 0;
    hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
    hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
    if (HAL_I2C_Init(&hi2c1) != HAL_OK)
    {
      Error_Handler();
    }
    /* USER CODE BEGIN I2C1_Init 2 */
  
    /* USER CODE END I2C1_Init 2 */
  
  }
  
  /**
    * @brief I2S3 Initialization Function
    * @param None
    * @retval None
    */
  static void MX_I2S3_Init(void)
  {
  
    /* USER CODE BEGIN I2S3_Init 0 */
  
    /* USER CODE END I2S3_Init 0 */
  
    /* USER CODE BEGIN I2S3_Init 1 */
  
    /* USER CODE END I2S3_Init 1 */
    hi2s3.Instance = SPI3;
    hi2s3.Init.Mode = I2S_MODE_MASTER_TX;
    hi2s3.Init.Standard = I2S_STANDARD_PHILIPS;
    hi2s3.Init.DataFormat = I2S_DATAFORMAT_16B;
    hi2s3.Init.MCLKOutput = I2S_MCLKOUTPUT_ENABLE;
    hi2s3.Init.AudioFreq = I2S_AUDIOFREQ_96K;
    hi2s3.Init.CPOL = I2S_CPOL_LOW;
    hi2s3.Init.ClockSource = I2S_CLOCK_PLL;
    hi2s3.Init.FullDuplexMode = I2S_FULLDUPLEXMODE_DISABLE;
    if (HAL_I2S_Init(&hi2s3) != HAL_OK)
    {
      Error_Handler();
    }
    /* USER CODE BEGIN I2S3_Init 2 */
  
    /* USER CODE END I2S3_Init 2 */
  
  }
  
  /**
    * @brief SPI1 Initialization Function
    * @param None
    * @retval None
    */
  static void MX_SPI1_Init(void)
  {
  
    /* USER CODE BEGIN SPI1_Init 0 */
  
    /* USER CODE END SPI1_Init 0 */
  
    /* USER CODE BEGIN SPI1_Init 1 */
  
    /* USER CODE END SPI1_Init 1 */
    /* SPI1 parameter configuration*/
    hspi1.Instance = SPI1;
    hspi1.Init.Mode = SPI_MODE_MASTER;
    hspi1.Init.Direction = SPI_DIRECTION_2LINES;
    hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
    hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
    hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
    hspi1.Init.NSS = SPI_NSS_SOFT;
    hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
    hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
    hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
    hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
    hspi1.Init.CRCPolynomial = 10;
    if (HAL_SPI_Init(&hspi1) != HAL_OK)
    {
      Error_Handler();
    }
    /* USER CODE BEGIN SPI1_Init 2 */
  
    /* USER CODE END SPI1_Init 2 */
  
  }
  
  /**
    * @brief USART2 Initialization Function
    * @param None
    * @retval None
    */
  static void MX_USART2_UART_Init(void)
  {
  
    /* USER CODE BEGIN USART2_Init 0 */
  
    /* USER CODE END USART2_Init 0 */
  
    /* USER CODE BEGIN USART2_Init 1 */
  
    /* USER CODE END USART2_Init 1 */
    huart2.Instance = USART2;
    huart2.Init.BaudRate = 9600;
    huart2.Init.WordLength = UART_WORDLENGTH_8B;
    huart2.Init.StopBits = UART_STOPBITS_1;
    huart2.Init.Parity = UART_PARITY_NONE;
    huart2.Init.Mode = UART_MODE_TX_RX;
    huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
    huart2.Init.OverSampling = UART_OVERSAMPLING_16;
    if (HAL_UART_Init(&huart2) != HAL_OK)
    {
      Error_Handler();
    }
    /* USER CODE BEGIN USART2_Init 2 */
  
    /* USER CODE END USART2_Init 2 */
  
  }
  
  /**
    * @brief GPIO Initialization Function
    * @param None
    * @retval None
    */
  static void MX_GPIO_Init(void)
  {
    GPIO_InitTypeDef GPIO_InitStruct = {0};
  
    /* GPIO Ports Clock Enable */
    __HAL_RCC_GPIOE_CLK_ENABLE();
    __HAL_RCC_GPIOC_CLK_ENABLE();
    __HAL_RCC_GPIOH_CLK_ENABLE();
    __HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();
    __HAL_RCC_GPIOD_CLK_ENABLE();
  
    /*Configure GPIO pin Output Level */
    HAL_GPIO_WritePin(CS_I2C_SPI_GPIO_Port, CS_I2C_SPI_Pin, GPIO_PIN_RESET);
  
    /*Configure GPIO pin Output Level */
    HAL_GPIO_WritePin(OTG_FS_PowerSwitchOn_GPIO_Port, OTG_FS_PowerSwitchOn_Pin, GPIO_PIN_SET);
  
    /*Configure GPIO pin Output Level */
    HAL_GPIO_WritePin(GPIOD, LD4_Pin|LD3_Pin|LD5_Pin|LD6_Pin 
                            |Audio_RST_Pin, GPIO_PIN_RESET);
  
    /*Configure GPIO pin : CS_I2C_SPI_Pin */
    GPIO_InitStruct.Pin = CS_I2C_SPI_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(CS_I2C_SPI_GPIO_Port, &GPIO_InitStruct);
  
    /*Configure GPIO pin : OTG_FS_PowerSwitchOn_Pin */
    GPIO_InitStruct.Pin = OTG_FS_PowerSwitchOn_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(OTG_FS_PowerSwitchOn_GPIO_Port, &GPIO_InitStruct);
  
    /*Configure GPIO pin : PDM_OUT_Pin */
    GPIO_InitStruct.Pin = PDM_OUT_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
    HAL_GPIO_Init(PDM_OUT_GPIO_Port, &GPIO_InitStruct);
  
    /*Configure GPIO pin : B1_Pin */
    GPIO_InitStruct.Pin = B1_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct);
  
    /*Configure GPIO pin : BOOT1_Pin */
    GPIO_InitStruct.Pin = BOOT1_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(BOOT1_GPIO_Port, &GPIO_InitStruct);
  
    /*Configure GPIO pin : CLK_IN_Pin */
    GPIO_InitStruct.Pin = CLK_IN_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI2;
    HAL_GPIO_Init(CLK_IN_GPIO_Port, &GPIO_InitStruct);
  
    /*Configure GPIO pins : LD4_Pin LD3_Pin LD5_Pin LD6_Pin 
                             Audio_RST_Pin */
    GPIO_InitStruct.Pin = LD4_Pin|LD3_Pin|LD5_Pin|LD6_Pin 
                            |Audio_RST_Pin;
    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);
  
    /*Configure GPIO pin : OTG_FS_OverCurrent_Pin */
    GPIO_InitStruct.Pin = OTG_FS_OverCurrent_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(OTG_FS_OverCurrent_GPIO_Port, &GPIO_InitStruct);
  
    /*Configure GPIO pin : MEMS_INT2_Pin */
    GPIO_InitStruct.Pin = MEMS_INT2_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    HAL_GPIO_Init(MEMS_INT2_GPIO_Port, &GPIO_InitStruct);
  
  }
  
  /* USER CODE BEGIN 4 */
  
  /* USER CODE END 4 */
  
  /**
    * @brief  This function is executed in case of error occurrence.
    * @retval None
    */
  void Error_Handler(void)
  {
    /* USER CODE BEGIN Error_Handler_Debug */
    /* User can add his own implementation to report the HAL error return state */
  
    /* USER CODE END Error_Handler_Debug */
  }
  
  #ifdef  USE_FULL_ASSERT
  /**
    * @brief  Reports the name of the source file and the source line number
    *         where the assert_param error has occurred.
    * @param  file: pointer to the source file name
    * @param  line: assert_param error line source number
    * @retval None
    */
  void assert_failed(uint8_t *file, uint32_t line)
  { 
    /* USER CODE BEGIN 6 */
    /* User can add his own implementation to report the file name and line number,
       tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
    /* USER CODE END 6 */
  }
  #endif /* USE_FULL_ASSERT */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  