view Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_msp_template.c @ 328:4fe5400567e7 I2C_Improvment

Set I2C speed to 88kHz, use digital filter only and reworked idle clock recovery The errata describes a possible problem in operation between 88kHz and 100kHz => Set speed as recommended as work around. Based on reference implementation only one filter should be use. Choice was digital because only drawback is lag of wakeup functionality which is not used I2C communication may be randomly interrupted e.g. by a RTE reset or firmware update => reworked recovery function to get I2C devices in idle state again (Clk and SDA HIGH)
author ideenmodellierer
date Wed, 17 Jul 2019 22:42:15 +0200
parents c78bcbd5deda
children
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/**
  ******************************************************************************
  * @file    stm32f4xx_hal_msp_template.c
  * @author  MCD Application Team
  * @brief   This file contains the HAL System and Peripheral (PPP) MSP initialization
  *          and de-initialization functions.
  *          It should be copied to the application folder and renamed into 'stm32f4xx_hal_msp.c'.           
  ******************************************************************************
  * @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 HAL_MSP HAL MSP
  * @brief HAL MSP module.
  * @{
  */

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

/** @defgroup HAL_MSP_Private_Functions HAL MSP Private Functions
  * @{
  */

/**
  * @brief  Initializes the Global MSP.
  * @note   This function is called from HAL_Init() function to perform system
  *         level initialization (GPIOs, clock, DMA, interrupt).
  * @retval None
  */
void HAL_MspInit(void)
{

}

/**
  * @brief  DeInitializes the Global MSP.
  * @note   This functiona is called from HAL_DeInit() function to perform system
  *         level de-initialization (GPIOs, clock, DMA, interrupt).
  * @retval None
  */
void HAL_MspDeInit(void)
{

}

/**
  * @brief  Initializes the PPP MSP.
  * @note   This functiona is called from HAL_PPP_Init() function to perform 
  *         peripheral(PPP) system level initialization (GPIOs, clock, DMA, interrupt)
  * @retval None
  */
void HAL_PPP_MspInit(void)
{

}

/**
  * @brief  DeInitializes the PPP MSP.
  * @note   This functiona is called from HAL_PPP_DeInit() function to perform 
  *         peripheral(PPP) system level de-initialization (GPIOs, clock, DMA, interrupt)
  * @retval None
  */
void HAL_PPP_MspDeInit(void)
{

}

/**
  * @}
  */

/**
  * @}
  */

/**
  * @}
  */

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