File content as of revision 581:39197bcd20f2:

/**
  ******************************************************************************
  * @file    stm32f4xx_hal_fmpi2c_ex.c
  * @author  MCD Application Team
  * @version V1.3.0
  * @date    09-March-2015
  * @brief   Extended FMPI2C HAL module driver.
  *    
  *          This file provides firmware functions to manage the following 
  *          functionalities of the Inter Integrated Circuit (FMPI2C) peripheral:
  *           + Extended Control methods
  *         
  @verbatim
  ==============================================================================
               ##### FMPI2C peripheral extended features  #####
  ==============================================================================
           
  [..] Comparing to other previous devices, the FMPI2C interface for STM32L4XX
       devices contains the following additional features
       
       (+) Possibility to disable or enable Analog Noise Filter
       (+) Use of a configured Digital Noise Filter
       (+) Disable or enable wakeup from Stop mode
   
                     ##### How to use this driver #####
  ==============================================================================
  [..] This driver provides functions to configure Noise Filter
  
  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2015 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.
  *
  ******************************************************************************  
  */ 

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"

/** @addtogroup STM32F4xx_HAL_Driver
  * @{
  */

/** @defgroup FMPI2CEx FMPI2CEx
  * @brief FMPI2C HAL module driver
  * @{
  */

#ifdef HAL_FMPI2C_MODULE_ENABLED

#if defined(STM32F446xx)

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/

/** @defgroup FMPI2CEx_Exported_Functions FMPI2C Extended Exported Functions
  * @{
  */


/** @defgroup FMPI2CEx_Exported_Functions_Group1 Peripheral Control methods 
 *  @brief   management functions 
 *
@verbatim   
 ===============================================================================
                      ##### Extension features functions #####
 ===============================================================================  
    [..] This section provides functions allowing to:
      (+) Configure Noise Filters 

@endverbatim
  * @{
  */
  
/**
  * @brief  Configures FMPI2C Analog noise filter. 
  * @param  hfmpi2c : pointer to a FMPI2C_HandleTypeDef structure that contains
  *                the configuration information for the specified FMPI2Cx peripheral.
  * @param  AnalogFilter : new state of the Analog filter.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_FMPI2CEx_AnalogFilter_Config(FMPI2C_HandleTypeDef *hfmpi2c, uint32_t AnalogFilter)
{
  /* Check the parameters */
  assert_param(IS_FMPI2C_ALL_INSTANCE(hfmpi2c->Instance));
  assert_param(IS_FMPI2C_ANALOG_FILTER(AnalogFilter));
  
  if((hfmpi2c->State == HAL_FMPI2C_STATE_BUSY) || (hfmpi2c->State == HAL_FMPI2C_STATE_MASTER_BUSY_TX) || (hfmpi2c->State == HAL_FMPI2C_STATE_MASTER_BUSY_RX)
     || (hfmpi2c->State == HAL_FMPI2C_STATE_SLAVE_BUSY_TX) || (hfmpi2c->State == HAL_FMPI2C_STATE_SLAVE_BUSY_RX))
  {
    return HAL_BUSY;
  }
  
  /* Process Locked */
  __HAL_LOCK(hfmpi2c);

  hfmpi2c->State = HAL_FMPI2C_STATE_BUSY;
  
  /* Disable the selected FMPI2C peripheral */
  __HAL_FMPI2C_DISABLE(hfmpi2c);    
  
  /* Reset FMPI2Cx ANOFF bit */
  hfmpi2c->Instance->CR1 &= ~(FMPI2C_CR1_ANFOFF);    
  
  /* Set analog filter bit*/
  hfmpi2c->Instance->CR1 |= AnalogFilter;
  
  __HAL_FMPI2C_ENABLE(hfmpi2c); 
  
  hfmpi2c->State = HAL_FMPI2C_STATE_READY;
  
  /* Process Unlocked */
  __HAL_UNLOCK(hfmpi2c);

  return HAL_OK; 
}

/**
  * @brief  Configures FMPI2C Digital noise filter. 
  * @param  hfmpi2c : pointer to a FMPI2C_HandleTypeDef structure that contains
  *                the configuration information for the specified FMPI2Cx peripheral.
  * @param  DigitalFilter : Coefficient of digital noise filter between 0x00 and 0x0F.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_FMPI2CEx_DigitalFilter_Config(FMPI2C_HandleTypeDef *hfmpi2c, uint32_t DigitalFilter)
{
  uint32_t tmpreg = 0;
  
  /* Check the parameters */
  assert_param(IS_FMPI2C_ALL_INSTANCE(hfmpi2c->Instance));
  assert_param(IS_FMPI2C_DIGITAL_FILTER(DigitalFilter));
  
  if((hfmpi2c->State == HAL_FMPI2C_STATE_BUSY) || (hfmpi2c->State == HAL_FMPI2C_STATE_MASTER_BUSY_TX) || (hfmpi2c->State == HAL_FMPI2C_STATE_MASTER_BUSY_RX)
     || (hfmpi2c->State == HAL_FMPI2C_STATE_SLAVE_BUSY_TX) || (hfmpi2c->State == HAL_FMPI2C_STATE_SLAVE_BUSY_RX))
  {
    return HAL_BUSY;
  }
  
  /* Process Locked */
  __HAL_LOCK(hfmpi2c);

  hfmpi2c->State = HAL_FMPI2C_STATE_BUSY;
  
  /* Disable the selected FMPI2C peripheral */
  __HAL_FMPI2C_DISABLE(hfmpi2c);  
  
  /* Get the old register value */
  tmpreg = hfmpi2c->Instance->CR1;
  
  /* Reset FMPI2Cx DNF bits [11:8] */
  tmpreg &= ~(FMPI2C_CR1_DFN);
  
  /* Set FMPI2Cx DNF coefficient */
  tmpreg |= DigitalFilter << 8;
  
  /* Store the new register value */
  hfmpi2c->Instance->CR1 = tmpreg;
  
  __HAL_FMPI2C_ENABLE(hfmpi2c); 
  
  hfmpi2c->State = HAL_FMPI2C_STATE_READY;
  
  /* Process Unlocked */
  __HAL_UNLOCK(hfmpi2c);

  return HAL_OK; 
}  

/**
  * @brief  Enables FMPI2C wakeup from stop mode.
  * @param  hfmpi2c : pointer to a FMPI2C_HandleTypeDef structure that contains
  *                the configuration information for the specified FMPI2Cx peripheral.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_FMPI2CEx_EnableWakeUp (FMPI2C_HandleTypeDef *hfmpi2c)
{
  /* Check the parameters */
  assert_param(IS_FMPI2C_ALL_INSTANCE(hfmpi2c->Instance));
  
  if((hfmpi2c->State == HAL_FMPI2C_STATE_BUSY) || (hfmpi2c->State == HAL_FMPI2C_STATE_MASTER_BUSY_TX) || (hfmpi2c->State == HAL_FMPI2C_STATE_MASTER_BUSY_RX)
     || (hfmpi2c->State == HAL_FMPI2C_STATE_SLAVE_BUSY_TX) || (hfmpi2c->State == HAL_FMPI2C_STATE_SLAVE_BUSY_RX))
  {
    return HAL_BUSY;
  }
  
  /* Process Locked */
  __HAL_LOCK(hfmpi2c);

  hfmpi2c->State = HAL_FMPI2C_STATE_BUSY;
  
  /* Disable the selected FMPI2C peripheral */
  __HAL_FMPI2C_DISABLE(hfmpi2c);  
  
  /* Enable wakeup from stop mode */
  hfmpi2c->Instance->CR1 |= FMPI2C_CR1_WUPEN;   
  
  __HAL_FMPI2C_ENABLE(hfmpi2c); 
  
  hfmpi2c->State = HAL_FMPI2C_STATE_READY;
  
  /* Process Unlocked */
  __HAL_UNLOCK(hfmpi2c);

  return HAL_OK; 
}  


/**
  * @brief  Disables FMPI2C wakeup from stop mode.
  * @param  hfmpi2c : pointer to a FMPI2C_HandleTypeDef structure that contains
  *                the configuration information for the specified FMPI2Cx peripheral.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_FMPI2CEx_DisableWakeUp (FMPI2C_HandleTypeDef *hfmpi2c)
{
  /* Check the parameters */
  assert_param(IS_FMPI2C_ALL_INSTANCE(hfmpi2c->Instance));
  
  if((hfmpi2c->State == HAL_FMPI2C_STATE_BUSY) || (hfmpi2c->State == HAL_FMPI2C_STATE_MASTER_BUSY_TX) || (hfmpi2c->State == HAL_FMPI2C_STATE_MASTER_BUSY_RX)
     || (hfmpi2c->State == HAL_FMPI2C_STATE_SLAVE_BUSY_TX) || (hfmpi2c->State == HAL_FMPI2C_STATE_SLAVE_BUSY_RX))
  {
    return HAL_BUSY;
  }
  
  /* Process Locked */
  __HAL_LOCK(hfmpi2c);

  hfmpi2c->State = HAL_FMPI2C_STATE_BUSY;
  
  /* Disable the selected FMPI2C peripheral */
  __HAL_FMPI2C_DISABLE(hfmpi2c);  
  
  /* Enable wakeup from stop mode */
  hfmpi2c->Instance->CR1 &= ~(FMPI2C_CR1_WUPEN);   
  
  __HAL_FMPI2C_ENABLE(hfmpi2c); 
  
  hfmpi2c->State = HAL_FMPI2C_STATE_READY;
  
  /* Process Unlocked */
  __HAL_UNLOCK(hfmpi2c);

  return HAL_OK; 
}  

/**
  * @brief Enable the FMPI2C1 fast mode plus driving capability.
  * @param ConfigFastModePlus: selects the pin.
  *   This parameter can be one of the @ref FMPI2CEx_FastModePlus values
  * @retval None
  */
void HAL_FMPI2CEx_EnableFastModePlus(uint32_t ConfigFastModePlus)
{
  /* Check the parameter */
  assert_param(IS_FMPI2C_FASTMODEPLUS(ConfigFastModePlus));
  
  /* Enable SYSCFG clock */
  __HAL_RCC_SYSCFG_CLK_ENABLE();
  
  /* Enable fast mode plus driving capability for selected pin */
  SET_BIT(SYSCFG->CFGR, (uint32_t)ConfigFastModePlus);
}

/**
  * @brief Disable the FMPI2C1 fast mode plus driving capability.
  * @param ConfigFastModePlus: selects the pin.
  *   This parameter can be one of the @ref FMPI2CEx_FastModePlus values
  * @retval None
  */
void HAL_FMPI2CEx_DisableFastModePlus(uint32_t ConfigFastModePlus)
{
  /* Check the parameter */
  assert_param(IS_FMPI2C_FASTMODEPLUS(ConfigFastModePlus));
  
  /* Enable SYSCFG clock */
  __HAL_RCC_SYSCFG_CLK_ENABLE();

  /* Disable fast mode plus driving capability for selected pin */
  CLEAR_BIT(SYSCFG->CFGR, (uint32_t)ConfigFastModePlus);
}

/**
  * @}
  */  

/**
  * @}
  */  
#endif /* STM32F446xx */
#endif /* HAL_FMPI2C_MODULE_ENABLED */
/**
  * @}
  */

/**
  * @}
  */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/