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view Discovery/Inc/unit.h @ 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 5f11787b4f42
children 1c95f811967c
line wrap: on
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///////////////////////////////////////////////////////////////////////////////
/// -*- coding: UTF-8 -*-
///
/// \file   Discovery/Inc/unit.h
/// \brief  input to meter/celsius or feet/farenheit
/// \author heinrichs weikamp gmbh
/// \date   24-Feb-2015
///
/// $Id$
///////////////////////////////////////////////////////////////////////////////
/// \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh
///
///     This program is free software: you can redistribute it and/or modify
///     it under the terms of the GNU General Public License as published by
///     the Free Software Foundation, either version 3 of the License, or
///     (at your option) any later version.
///
///     This program is distributed in the hope that it will be useful,
///     but WITHOUT ANY WARRANTY; without even the implied warranty of
///     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
///     GNU General Public License for more details.
///
///     You should have received a copy of the GNU General Public License
///     along with this program.  If not, see <http://www.gnu.org/licenses/>.
//////////////////////////////////////////////////////////////////////////////

/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef UNIT_H
#define UNIT_H

#ifdef __cplusplus
 extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"

/** @addtogroup Template
	* @{
	*/

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


/* Exported functions --------------------------------------------------------*/
float unit_depth_float(float input_meter);
uint16_t unit_depth_integer(uint16_t input_meter);
float unit_temperature_float(float input_celsius);
uint16_t unit_speed_integer(uint16_t input_meterPerMinute);
int unit_SeaLevelRelation_integer(int input_atmospheric_mbar);
char unit_depth_char1(void);
char unit_depth_char2(void);
char unit_depth_char1_T105(void);
char unit_depth_char2_T105(void);

#ifdef __cplusplus
}
#endif

#endif /* UNIT_H */

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