text: /**
    ******************************************************************************
    * File Name          : I2C.c
    * Description        : This file provides code for the configuration
    *                      of the I2C instances.
    ******************************************************************************
    ** This notice applies to any and all portions of this file
    * that are not between comment pairs USER CODE BEGIN and
    * USER CODE END. Other portions of this file, whether 
    * inserted by the user or by software development tools
    * are owned by their respective copyright owners.
    *
    * COPYRIGHT(c) 2018 STMicroelectronics
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *   1. Redistributions of source code must retain the above copyright notice,
    *      this list of conditions and the following disclaimer.
    *   2. Redistributions in binary form must reproduce the above copyright notice,
    *      this list of conditions and the following disclaimer in the documentation
    *      and/or other materials provided with the distribution.
    *   3. Neither the name of STMicroelectronics nor the names of its contributors
    *      may be used to endorse or promote products derived from this software
    *      without specific prior written permission.
    *
    * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
    * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
    * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
    * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
    * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    ******************************************************************************
    */
  
  /* Includes ------------------------------------------------------------------*/
  #include "i2c.h"
  
  #include "gpio.h"
  
  /* USER CODE BEGIN 0 */
  
  /* USER CODE END 0 */
  
  I2C_HandleTypeDef hi2c1;
  
  /* I2C1 init function */
  void MX_I2C1_Init(void)
  {
  
    hi2c1.Instance = I2C1;
    hi2c1.Init.Timing = 0x10909CEC;
    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(__FILE__, __LINE__);
    }
  
      /**Configure Analogue filter 
      */
    if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
    {
      _Error_Handler(__FILE__, __LINE__);
    }
  
      /**Configure Digital filter 
      */
    if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
    {
      _Error_Handler(__FILE__, __LINE__);
    }
  
  }
  
  void HAL_I2C_MspInit(I2C_HandleTypeDef* i2cHandle)
  {
  
    GPIO_InitTypeDef GPIO_InitStruct;
    if(i2cHandle->Instance==I2C1)
    {
    /* USER CODE BEGIN I2C1_MspInit 0 */
  
    /* USER CODE END I2C1_MspInit 0 */
    
      /**I2C1 GPIO Configuration    
      PB8     ------> I2C1_SCL
      PB9     ------> I2C1_SDA 
      */
      GPIO_InitStruct.Pin = GPIO_PIN_8|GPIO_PIN_9;
      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(GPIOB, &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    
      PB8     ------> I2C1_SCL
      PB9     ------> I2C1_SDA 
      */
      HAL_GPIO_DeInit(GPIOB, GPIO_PIN_8|GPIO_PIN_9);
  
    /* USER CODE BEGIN I2C1_MspDeInit 1 */
  
    /* USER CODE END I2C1_MspDeInit 1 */
    }
  } 
  
  /* USER CODE BEGIN 1 */
  
  /* USER CODE END 1 */
  
  /**
    * @}
    */
  
  /**
    * @}
    */
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  