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view OtherSources/stm32f4xx_hal_msp.c @ 328:4fe5400567e7 I2C_Improvment

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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 7801c5d8a562
children
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/**
  ******************************************************************************
  * @file    stm32f4xx_hal_msp.c 
  * @author  heinrichs weikamp gmbh
  * @date    05-Dec-2014
  * @version V0.0.1
  * @since   05-Dec-2014
  * @brief   loader for the hardware specific stm32f4xx_hal_msp.c 
  *           
  @verbatim                 
  ============================================================================== 
              ##### How to use #####
  ============================================================================== 
  @endverbatim
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2014 heinrichs weikamp</center></h2>
  *
  ******************************************************************************
  */ 

/* Includes ------------------------------------------------------------------*/

#include "ostc.h"

#ifdef OSTC_ON_DISCOVERY_HARDWARE
 #include "stm32f4xx_hal_msp_discovery.c"
#else
 #include "stm32f4xx_hal_msp_hw1.c"
#endif

/* Exported variables --------------------------------------------------------*/  

/* Private types -------------------------------------------------------------*/

/* Private variables ---------------------------------------------------------*/

/* Private variables with external access via get_xxx() function -------------*/

/* Private function prototypes -----------------------------------------------*/

/* Exported functions --------------------------------------------------------*/

/* Private functions ---------------------------------------------------------*/

/************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/