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view Common/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_fmpi2c_ex.h @ 224:ceecabfddb57 div-fixes-3
Bugfix, deco: fix 2 (small) problems with calculated ceiling
This fixes 1 trivial, and 1 not really trivial bug in the calculation
of the ceiling. When simulating a bounce dive to 80m, things become
clear (tried this on a CCR dive, fixed setpoint 1.2bar, about 15 minutes
of bottom time). Closely watch the behavior of the ceiling data. At some
point during the ascent, the ceiling begins to decrease in 10cm steps.
Then suddenly (while still ascending), the ceiling increases again with 1m,
does not change for some time, and then suddenly steps 1.1m less deep.
While not very relevant to real deco diving, it is simply wrong.
The reason for this is subtle. The algorithm used to find the ceiling
is a sort of linear search, stepping down a meter, overshoot the depth, and
search back in 10cm steps. It seems some numerical instability. Fixing
this, was a bit more computational intensive search by stepping up down in
equal steps of 10cm. But, I'm pretty sure that things can be speeded up here, as a
ceiling does not change fast, so it should be not that difficult to limit
the search space, or use a binary search algorithm instead.
The trivial second problem fixed, is that the ceiling ends at the surface
and not at 1m depth. This small issue became visible after changing the step
down size above.
Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author | Jan Mulder <jlmulder@xs4all.nl> |
---|---|
date | Sun, 31 Mar 2019 19:35:51 +0200 |
parents | c78bcbd5deda |
children |
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/** ****************************************************************************** * @file stm32f4xx_hal_fmpi2c_ex.h * @author MCD Application Team * @brief Header file of FMPI2C HAL Extended module. ****************************************************************************** * @attention * * <h2><center>© 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. * ****************************************************************************** */ /* Define to prevent recursive inclusion -------------------------------------*/ #ifndef __STM32F4xx_HAL_FMPI2C_EX_H #define __STM32F4xx_HAL_FMPI2C_EX_H #ifdef __cplusplus extern "C" { #endif #if defined(STM32F410Tx) || defined(STM32F410Cx) || defined(STM32F410Rx) || defined(STM32F446xx) || defined(STM32F412Zx) ||\ defined(STM32F412Vx) || defined(STM32F412Rx) || defined(STM32F412Cx) || defined(STM32F413xx) || defined(STM32F423xx) /* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_hal_def.h" /** @addtogroup STM32F4xx_HAL_Driver * @{ */ /** @addtogroup FMPI2CEx * @{ */ /* Exported types ------------------------------------------------------------*/ /* Exported constants --------------------------------------------------------*/ /** @defgroup FMPI2CEx_Exported_Constants FMPI2C Extended Exported Constants * @{ */ /** @defgroup FMPI2CEx_Analog_Filter FMPI2C Extended Analog Filter * @{ */ #define FMPI2C_ANALOGFILTER_ENABLE 0x00000000U #define FMPI2C_ANALOGFILTER_DISABLE FMPI2C_CR1_ANFOFF /** * @} */ /** @defgroup FMPI2CEx_FastModePlus FMPI2C Extended Fast Mode Plus * @{ */ #define FMPI2C_FASTMODEPLUS_SCL SYSCFG_CFGR_FMPI2C1_SCL /*!< Enable Fast Mode Plus on FMPI2C1 SCL pins */ #define FMPI2C_FASTMODEPLUS_SDA SYSCFG_CFGR_FMPI2C1_SDA /*!< Enable Fast Mode Plus on FMPI2C1 SDA pins */ /** * @} */ /** * @} */ /* Exported macro ------------------------------------------------------------*/ /* Exported functions --------------------------------------------------------*/ /** @addtogroup FMPI2CEx_Exported_Functions FMPI2C Extended Exported Functions * @{ */ /** @addtogroup FMPI2CEx_Exported_Functions_Group1 Extended features functions * @brief Extended features functions * @{ */ /* Peripheral Control functions ************************************************/ HAL_StatusTypeDef HAL_FMPI2CEx_ConfigAnalogFilter(FMPI2C_HandleTypeDef *hfmpi2c, uint32_t AnalogFilter); HAL_StatusTypeDef HAL_FMPI2CEx_ConfigDigitalFilter(FMPI2C_HandleTypeDef *hfmpi2c, uint32_t DigitalFilter); void HAL_FMPI2CEx_EnableFastModePlus(uint32_t ConfigFastModePlus); void HAL_FMPI2CEx_DisableFastModePlus(uint32_t ConfigFastModePlus); /* Private constants ---------------------------------------------------------*/ /** @defgroup FMPI2CEx_Private_Constants FMPI2C Extended Private Constants * @{ */ /** * @} */ /* Private macros ------------------------------------------------------------*/ /** @defgroup FMPI2CEx_Private_Macro FMPI2C Extended Private Macros * @{ */ #define IS_FMPI2C_ANALOG_FILTER(FILTER) (((FILTER) == FMPI2C_ANALOGFILTER_ENABLE) || \ ((FILTER) == FMPI2C_ANALOGFILTER_DISABLE)) #define IS_FMPI2C_DIGITAL_FILTER(FILTER) ((FILTER) <= 0x0000000FU) #define IS_FMPI2C_FASTMODEPLUS(__CONFIG__) ((((__CONFIG__) & (FMPI2C_FASTMODEPLUS_SCL)) == FMPI2C_FASTMODEPLUS_SCL) || \ (((__CONFIG__) & (FMPI2C_FASTMODEPLUS_SDA)) == FMPI2C_FASTMODEPLUS_SDA)) /** * @} */ /* Private Functions ---------------------------------------------------------*/ /** @defgroup FMPI2CEx_Private_Functions FMPI2C Extended Private Functions * @{ */ /* Private functions are defined in stm32f4xx_hal_fmpi2c_ex.c file */ /** * @} */ /** * @} */ /** * @} */ /** * @} */ /** * @} */ #endif /* STM32F410xx || STM32F446xx || STM32F412Zx || STM32F412Vx || STM32F412Rx || STM32F412Cx || STM32F413xx || STM32F423xx */ #ifdef __cplusplus } #endif #endif /* __STM32F4xx_HAL_FMPI2C_EX_H */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/