3ef911345c
This patch updates ST's HAL to the latest version, V1.3.0, dated 19 June 2014. Files were copied verbatim from the ST package. Only change was to suppress compiler warning of unused variables in 4 places. A lot of the changes from ST are cosmetic: comments and white space. Some small code changes here and there, and addition of F411 header. Main code change is how SysTick interrupt is set: it now has a configuration variable to set the priority, so we no longer need to work around this (originall in system_stm32f4xx.c).
206 lines
7.2 KiB
C
206 lines
7.2 KiB
C
/**
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******************************************************************************
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* @file stm32f4xx_hal_i2c_ex.c
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* @author MCD Application Team
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* @version V1.1.0
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* @date 19-June-2014
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* @brief I2C Extension HAL module driver.
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* This file provides firmware functions to manage the following
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* functionalities of I2C extension peripheral:
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* + Extension features functions
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*
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@verbatim
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==============================================================================
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##### I2C peripheral extension features #####
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==============================================================================
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[..] Comparing to other previous devices, the I2C interface for STM32F427xx/437xx/
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429xx/439xx devices contains the following additional features :
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(+) Possibility to disable or enable Analog Noise Filter
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(+) Use of a configured Digital Noise Filter
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##### How to use this driver #####
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==============================================================================
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[..] This driver provides functions to configure Noise Filter
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(#) Configure I2C Analog noise filter using the function HAL_I2C_AnalogFilter_Config()
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(#) Configure I2C Digital noise filter using the function HAL_I2C_DigitalFilter_Config()
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@endverbatim
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f4xx_hal.h"
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/** @addtogroup STM32F4xx_HAL_Driver
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* @{
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*/
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/** @defgroup I2CEx
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* @brief I2C HAL module driver
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* @{
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*/
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#ifdef HAL_I2C_MODULE_ENABLED
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#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx)|| defined(STM32F439xx) ||\
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defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE)
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Private functions ---------------------------------------------------------*/
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/** @defgroup I2CEx_Private_Functions
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* @{
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*/
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/** @defgroup I2CEx_Group1 Extension features functions
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* @brief Extension features functions
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*
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@verbatim
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===============================================================================
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##### Extension features functions #####
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===============================================================================
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[..] This section provides functions allowing to:
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(+) Configure Noise Filters
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@endverbatim
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* @{
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*/
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/**
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* @brief Configures I2C Analog noise filter.
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* @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
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* the configuration information for the specified I2Cx peripheral.
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* @param AnalogFilter: new state of the Analog filter.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_I2CEx_AnalogFilter_Config(I2C_HandleTypeDef *hi2c, uint32_t AnalogFilter)
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{
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uint32_t tmp = 0;
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/* Check the parameters */
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assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
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assert_param(IS_I2C_ANALOG_FILTER(AnalogFilter));
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tmp = hi2c->State;
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if((tmp == HAL_I2C_STATE_BUSY) || (tmp == HAL_I2C_STATE_BUSY_TX) || (tmp == HAL_I2C_STATE_BUSY_RX))
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{
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return HAL_BUSY;
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}
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hi2c->State = HAL_I2C_STATE_BUSY;
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/* Disable the selected I2C peripheral */
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__HAL_I2C_DISABLE(hi2c);
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/* Reset I2Cx ANOFF bit */
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hi2c->Instance->FLTR &= ~(I2C_FLTR_ANOFF);
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/* Disable the analog filter */
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hi2c->Instance->FLTR |= AnalogFilter;
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__HAL_I2C_ENABLE(hi2c);
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hi2c->State = HAL_I2C_STATE_READY;
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return HAL_OK;
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}
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/**
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* @brief Configures I2C Digital noise filter.
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* @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
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* the configuration information for the specified I2Cx peripheral.
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* @param DigitalFilter: Coefficient of digital noise filter between 0x00 and 0x0F.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_I2CEx_DigitalFilter_Config(I2C_HandleTypeDef *hi2c, uint32_t DigitalFilter)
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{
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uint16_t tmpreg = 0;
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uint32_t tmp = 0;
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/* Check the parameters */
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assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
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assert_param(IS_I2C_DIGITAL_FILTER(DigitalFilter));
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tmp = hi2c->State;
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if((tmp == HAL_I2C_STATE_BUSY) || (tmp == HAL_I2C_STATE_BUSY_TX) || (tmp == HAL_I2C_STATE_BUSY_RX))
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{
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return HAL_BUSY;
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}
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hi2c->State = HAL_I2C_STATE_BUSY;
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/* Disable the selected I2C peripheral */
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__HAL_I2C_DISABLE(hi2c);
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/* Get the old register value */
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tmpreg = hi2c->Instance->FLTR;
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/* Reset I2Cx DNF bit [3:0] */
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tmpreg &= ~(I2C_FLTR_DNF);
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/* Set I2Cx DNF coefficient */
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tmpreg |= DigitalFilter;
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/* Store the new register value */
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hi2c->Instance->FLTR = tmpreg;
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__HAL_I2C_ENABLE(hi2c);
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hi2c->State = HAL_I2C_STATE_READY;
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return HAL_OK;
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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#endif /* STM32F427xx || STM32F429xx || STM32F437xx || STM32F439xx || STM32F401xC || STM32F401xE */
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#endif /* HAL_I2C_MODULE_ENABLED */
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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