text: /**
    ******************************************************************************
    * @file    stm32f4xx_hal_i2c_ex.h
    * @author  MCD Application Team
    * @version V1.4.4
    * @date    22-January-2016
    * @brief   Header file of I2C HAL Extension module.
    ******************************************************************************
    * @attention
    *
    * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
    *
    * 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.
    *
    ******************************************************************************
    */ 
  
  /* Define to prevent recursive inclusion -------------------------------------*/
  #ifndef __STM32F4xx_HAL_I2C_EX_H
  #define __STM32F4xx_HAL_I2C_EX_H
  
  #ifdef __cplusplus
   extern "C" {
  #endif
  
  #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\
      defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) || defined(STM32F446xx) ||\
      defined(STM32F469xx) || defined(STM32F479xx)
  /* Includes ------------------------------------------------------------------*/
  #include "stm32f4xx_hal_def.h"  
  
  /** @addtogroup STM32F4xx_HAL_Driver
    * @{
    */
  
  /** @addtogroup I2CEx
    * @{
    */ 
  
  /* Exported types ------------------------------------------------------------*/ 
  /* Exported constants --------------------------------------------------------*/
  /** @defgroup I2CEx_Exported_Constants I2C Exported Constants
    * @{
    */
  
  /** @defgroup I2CEx_Analog_Filter I2C Analog Filter
    * @{
    */
  #define I2C_ANALOGFILTER_ENABLE        ((uint32_t)0x00000000U)
  #define I2C_ANALOGFILTER_DISABLE       I2C_FLTR_ANOFF
  /**
    * @}
    */
    
  /**
    * @}
    */ 
    
  /* Exported macro ------------------------------------------------------------*/
  /* Exported functions --------------------------------------------------------*/
  /** @addtogroup I2CEx_Exported_Functions
    * @{
    */
  
  /** @addtogroup I2CEx_Exported_Functions_Group1
    * @{
    */
  /* Peripheral Control functions  ************************************************/
  HAL_StatusTypeDef HAL_I2CEx_ConfigAnalogFilter(I2C_HandleTypeDef *hi2c, uint32_t AnalogFilter);
  HAL_StatusTypeDef HAL_I2CEx_ConfigDigitalFilter(I2C_HandleTypeDef *hi2c, uint32_t DigitalFilter);
  /**
    * @}
    */
  
  /**
    * @}
    */ 
  /* Private types -------------------------------------------------------------*/
  /* Private variables ---------------------------------------------------------*/
  /* Private constants ---------------------------------------------------------*/
  /** @defgroup I2CEx_Private_Constants I2C Private Constants
    * @{
    */
  
  /**
    * @}
    */
  
  /* Private macros ------------------------------------------------------------*/
  /** @defgroup I2CEx_Private_Macros I2C Private Macros
    * @{
    */
  #define IS_I2C_ANALOG_FILTER(FILTER) (((FILTER) == I2C_ANALOGFILTER_ENABLE) || \
                                        ((FILTER) == I2C_ANALOGFILTER_DISABLE))
  #define IS_I2C_DIGITAL_FILTER(FILTER)   ((FILTER) <= 0x0000000FU)
  /**
    * @}
    */
  
  /**
    * @}
    */ 
  
  /**
    * @}
    */
  
  #endif /* STM32F427xx || STM32F429xx || STM32F437xx || STM32F439xx || STM32F401xC ||\
            STM32F401xE || STM32F411xE || STM32F446xx || STM32F469xx || STM32F479xx */
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* __STM32F4xx_HAL_I2C_EX_H */
  
  
  /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
  