text: /**
    ******************************************************************************
    * @file    i2c.c
    * @brief   This file provides code for the configuration
    *          of the I2C instances.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
    * All rights reserved.</center></h2>
    *
    * This software component is licensed by ST under BSD 3-Clause license,
    * the "License"; You may not use this file except in compliance with the
    * License. You may obtain a copy of the License at:
    *                        opensource.org/licenses/BSD-3-Clause
    *
    ******************************************************************************
    */
  
  /* Includes ------------------------------------------------------------------*/
  #include "i2c.h"
  
  /* USER CODE BEGIN 0 */
  
  /* USER CODE END 0 */
  
  I2C_HandleTypeDef hi2c1;
  
  /* I2C1 init function */
  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.Timing = 0x00000000;
    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();
    }
    /** Configure Analogue filter
    */
    if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
    {
      Error_Handler();
    }
    /** Configure Digital filter
    */
    if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
    {
      Error_Handler();
    }
    /* USER CODE BEGIN I2C1_Init 2 */
  
    /* USER CODE END I2C1_Init 2 */
  
  }
  
  void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
  {
  
    GPIO_InitTypeDef GPIO_InitStruct = {0};
    if(i2cHandle->Instance==I2C1)
    {
    /* USER CODE BEGIN I2C1_MspInit 0 */
  
    /* USER CODE END I2C1_MspInit 0 */
      LL_RCC_SetI2CClockSource(LL_RCC_I2C1_CLKSOURCE_SYSCLK);
  
      __HAL_RCC_GPIOA_CLK_ENABLE();
      /**I2C1 GPIO Configuration
      PA9     ------> I2C1_SCL
      PA10     ------> I2C1_SDA
      */
      GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
      GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
      GPIO_InitStruct.Pull = GPIO_PULLUP;
      GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
      GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
      HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  
      /* I2C1 clock enable */
      __HAL_RCC_I2C1_CLK_ENABLE();
    /* USER CODE BEGIN I2C1_MspInit 1 */
  
    /* USER CODE END I2C1_MspInit 1 */
    }
  }
  
  void HAL_I2C_MspDeInit(I2C_HandleTypeDef* i2cHandle)
  {
  
    if(i2cHandle->Instance==I2C1)
    {
    /* USER CODE BEGIN I2C1_MspDeInit 0 */
  
    /* USER CODE END I2C1_MspDeInit 0 */
      /* Peripheral clock disable */
      __HAL_RCC_I2C1_CLK_DISABLE();
  
      /**I2C1 GPIO Configuration
      PA9     ------> I2C1_SCL
      PA10     ------> I2C1_SDA
      */
      HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9);
  
      HAL_GPIO_DeInit(GPIOA, GPIO_PIN_10);
  
    /* USER CODE BEGIN I2C1_MspDeInit 1 */
  
    /* USER CODE END I2C1_MspDeInit 1 */
    }
  }
  
  /* USER CODE BEGIN 1 */
  void I2C_Activate(void)
  {
  }
  
  uint32_t I2C_read(uint16_t DevAddress, uint8_t *pData, uint16_t Size)
  {
    while(HAL_I2C_Master_Receive(&hi2c1, DevAddress, (uint8_t *)pData, Size, 10000) != HAL_OK)
    {
    }
    /* Error_Handler() function is called when Timeout error occurs.
    When Acknowledge failure occurs (Slave don't acknowledge its address)
    Master restarts communication */
    return HAL_I2C_GetError(&hi2c1);
  }
  
  uint32_t I2C_write(uint16_t DevAddress, const uint8_t *pData, uint16_t Size)
  {
    while(HAL_I2C_Master_Transmit(&hi2c1, DevAddress, (uint8_t *)pData, Size, 1000) != HAL_OK)
    {
    }
    /* Error_Handler() function is called when Timeout error occurs.
    When Acknowledge failure occurs (Slave don't acknowledge its address)
    Master restarts communication */
    return HAL_I2C_GetError(&hi2c1);
  }
  /* USER CODE END 1 */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  