view Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_fmpi2c_ex.c @ 250:822416168585 bm-2

Buelmann: new implementation for ceiling Since my first functional fix in the ceiling computation in commit ceecabfddb57, I noticed that the computation used a linear search, that became rather computational expensive after that commit. The simple question is: why not a binary search? So, this commit implements the binary search. But there is a long story attached to this. Comparing ceiling results from hwOS and this OSTC4 code were very different. Basically, the original OSTC4 algorithm computed the ceiling using the same GFlow to GFhigh slope, in such a way, that the ceiling was in sync with the presented deco stops, where the hwOS code presents a GFhigh based ceiling. This said, it is more logical when the OSTC4 and hwOS code give similar results. This new recursive algorithm gives very similar results for the ceiling compared to hwOS. To be complete here, the Buelmann ceiling is the depth to which you can ascend, so that the leading tissue reaches GFhigh. This also explains why the deepest deco stop is normally deeper than the ceiling (unless one dives with GF like 80/80). The code implemented here is rather straightforward recursion. Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author Jan Mulder <jlmulder@xs4all.nl>
date Thu, 11 Apr 2019 17:48:48 +0200
parents c78bcbd5deda
children
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/**
  ******************************************************************************
  * @file    stm32f4xx_hal_fmpi2c_ex.c
  * @author  MCD Application Team
  * @brief   FMPI2C Extended HAL module driver.
  *          This file provides firmware functions to manage the following
  *          functionalities of FMPI2C Extended peripheral:
  *           + Extended features functions
  *
  @verbatim
  ==============================================================================
               ##### FMPI2C peripheral Extended features  #####
  ==============================================================================

  [..] Comparing to other previous devices, the FMPI2C interface for STM32F4xx
       devices contains the following additional features

       (+) Possibility to disable or enable Analog Noise Filter
       (+) Use of a configured Digital Noise Filter
       (+) Disable or enable Fast Mode Plus

                     ##### How to use this driver #####
  ==============================================================================
  [..] This driver provides functions to configure Noise Filter and Wake Up Feature
    (#) Configure FMPI2C Analog noise filter using the function HAL_FMPI2CEx_ConfigAnalogFilter()
    (#) Configure FMPI2C Digital noise filter using the function HAL_FMPI2CEx_ConfigDigitalFilter()
    (#) Configure the enable or disable of fast mode plus driving capability using the functions :
          (++) HAL_FMPI2CEx_EnableFastModePlus()
          (++) HAL_FMPI2CEx_DisableFastModePlus()
  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2017 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 Extended HAL module driver
  * @{
  */

#ifdef HAL_FMPI2C_MODULE_ENABLED

#if defined(STM32F410Tx) || defined(STM32F410Cx) || defined(STM32F410Rx) || defined(STM32F446xx) || defined(STM32F412Zx) || defined(STM32F412Vx) || \
    defined(STM32F412Rx) || defined(STM32F412Cx) || defined(STM32F413xx) || defined(STM32F423xx)

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

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

/** @defgroup FMPI2CEx_Exported_Functions_Group1 Extended features functions
  * @brief    Extended features functions
 *
@verbatim
 ===============================================================================
                      ##### Extended features functions #####
 ===============================================================================
    [..] This section provides functions allowing to:
      (+) Configure Noise Filters
      (+) Configure Fast Mode Plus

@endverbatim
  * @{
  */

/**
  * @brief  Configure 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_ConfigAnalogFilter(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_READY)
  {
    /* 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;
  }
  else
  {
    return HAL_BUSY;
  }
}

/**
  * @brief  Configure 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 Min_Data=0x00 and Max_Data=0x0F.
  * @retval HAL status
  */
HAL_StatusTypeDef HAL_FMPI2CEx_ConfigDigitalFilter(FMPI2C_HandleTypeDef *hfmpi2c, uint32_t DigitalFilter)
{
  uint32_t tmpreg = 0U;

  /* Check the parameters */
  assert_param(IS_FMPI2C_ALL_INSTANCE(hfmpi2c->Instance));
  assert_param(IS_FMPI2C_DIGITAL_FILTER(DigitalFilter));

  if (hfmpi2c->State == HAL_FMPI2C_STATE_READY)
  {
    /* 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 << 8U;

    /* 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;
  }
  else
  {
    return HAL_BUSY;
  }
}

/**
  * @brief Enable the FMPI2C 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 FMPI2C 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 /* STM32F410xx || STM32F446xx || STM32F412Zx || STM32F412Vx || STM32F412Rx || STM32F412Cx ||\
          STM32F413xx || STM32F423xx */
#endif /* HAL_FMPI2C_MODULE_ENABLED */
/**
  * @}
  */

/**
  * @}
  */

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