Diff: mbed-dev-master/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_i2c_ex.c

Revision:

0:bb348c97df44

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-dev-master/targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_i2c_ex.c	Wed Sep 16 01:11:49 2020 +0000
@@ -0,0 +1,204 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_hal_i2c_ex.c
+  * @author  MCD Application Team
+  * @brief   I2C Extension HAL module driver.
+  *          This file provides firmware functions to manage the following 
+  *          functionalities of I2C extension peripheral:
+  *           + Extension features functions
+  *    
+  @verbatim
+  ==============================================================================
+               ##### I2C peripheral extension features  #####
+  ==============================================================================
+           
+  [..] Comparing to other previous devices, the I2C interface for STM32F427xx/437xx/ 
+       429xx/439xx devices contains the following additional features :
+       
+       (+) Possibility to disable or enable Analog Noise Filter
+       (+) Use of a configured Digital Noise Filter
+   
+                     ##### How to use this driver #####
+  ==============================================================================
+  [..] This driver provides functions to configure Noise Filter
+    (#) Configure I2C Analog noise filter using the function HAL_I2C_AnalogFilter_Config()
+    (#) Configure I2C Digital noise filter using the function HAL_I2C_DigitalFilter_Config()
+  
+  @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 I2CEx I2CEx
+  * @brief I2C HAL module driver
+  * @{
+  */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+
+#if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx) ||\
+    defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) || defined(STM32F446xx) ||\
+    defined(STM32F469xx) || defined(STM32F479xx) || defined(STM32F413xx) || defined(STM32F423xx)
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup I2CEx_Exported_Functions I2C Exported Functions
+  * @{
+  */
+
+
+/** @defgroup I2CEx_Exported_Functions_Group1 Extension features functions 
+ *  @brief   Extension features functions 
+ *
+@verbatim   
+ ===============================================================================
+                      ##### Extension features functions #####
+ ===============================================================================  
+    [..] This section provides functions allowing to:
+      (+) Configure Noise Filters 
+
+@endverbatim
+  * @{
+  */
+  
+/**
+  * @brief  Configures I2C Analog noise filter. 
+  * @param  hi2c pointer to a I2C_HandleTypeDef structure that contains
+  *                the configuration information for the specified I2Cx peripheral.
+  * @param  AnalogFilter new state of the Analog filter.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_I2CEx_ConfigAnalogFilter(I2C_HandleTypeDef *hi2c, uint32_t AnalogFilter)
+{
+  /* Check the parameters */
+  assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+  assert_param(IS_I2C_ANALOG_FILTER(AnalogFilter));
+  
+  if(hi2c->State == HAL_I2C_STATE_READY)
+  {
+    hi2c->State = HAL_I2C_STATE_BUSY;
+
+    /* Disable the selected I2C peripheral */
+    __HAL_I2C_DISABLE(hi2c);    
+
+    /* Reset I2Cx ANOFF bit */
+    hi2c->Instance->FLTR &= ~(I2C_FLTR_ANOFF);
+
+    /* Disable the analog filter */
+    hi2c->Instance->FLTR |= AnalogFilter;
+
+    __HAL_I2C_ENABLE(hi2c); 
+
+    hi2c->State = HAL_I2C_STATE_READY;
+
+    return HAL_OK;
+  }
+  else
+  {
+    return HAL_BUSY;
+  }
+}
+
+/**
+  * @brief  Configures I2C Digital noise filter. 
+  * @param  hi2c pointer to a I2C_HandleTypeDef structure that contains
+  *                the configuration information for the specified I2Cx peripheral.
+  * @param  DigitalFilter Coefficient of digital noise filter between 0x00 and 0x0F.
+  * @retval HAL status
+  */
+HAL_StatusTypeDef HAL_I2CEx_ConfigDigitalFilter(I2C_HandleTypeDef *hi2c, uint32_t DigitalFilter)
+{
+  uint16_t tmpreg = 0;
+
+  /* Check the parameters */
+  assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+  assert_param(IS_I2C_DIGITAL_FILTER(DigitalFilter));
+  
+  if(hi2c->State == HAL_I2C_STATE_READY)
+  {
+    hi2c->State = HAL_I2C_STATE_BUSY;
+    
+    /* Disable the selected I2C peripheral */
+    __HAL_I2C_DISABLE(hi2c);  
+    
+    /* Get the old register value */
+    tmpreg = hi2c->Instance->FLTR;
+    
+    /* Reset I2Cx DNF bit [3:0] */
+    tmpreg &= ~(I2C_FLTR_DNF);
+    
+    /* Set I2Cx DNF coefficient */
+    tmpreg |= DigitalFilter;
+    
+    /* Store the new register value */
+    hi2c->Instance->FLTR = tmpreg;
+    
+    __HAL_I2C_ENABLE(hi2c); 
+    
+    hi2c->State = HAL_I2C_STATE_READY;
+    
+    return HAL_OK; 
+  }
+  else
+  {
+    return HAL_BUSY; 
+  }
+}  
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */  
+#endif /* STM32F427xx || STM32F429xx || STM32F437xx || STM32F439xx || STM32F401xC ||\
+          STM32F401xE || STM32F446xx || STM32F469xx || STM32F479xx || STM32F413xx ||\
+		  STM32F423xx */
+
+#endif /* HAL_I2C_MODULE_ENABLED */
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/