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view Common/Drivers/STM32F4xx_HAL_Driver/Inc/stm32f4xx_hal_dcmi_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_dcmi_ex.h * @author MCD Application Team * @brief Header file of DCMI Extension HAL 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_DCMI_EX_H #define __STM32F4xx_HAL_DCMI_EX_H #ifdef __cplusplus extern "C" { #endif #if defined(STM32F407xx) || defined(STM32F417xx) || defined(STM32F427xx) || defined(STM32F437xx) ||\ defined(STM32F429xx) || defined(STM32F439xx) || defined(STM32F446xx) || defined(STM32F469xx) ||\ defined(STM32F479xx) /* Includes ------------------------------------------------------------------*/ #include "stm32f4xx_hal_def.h" /** @addtogroup STM32F4xx_HAL_Driver * @{ */ /** @addtogroup DCMIEx * @brief DCMI HAL module driver * @{ */ /* Exported types ------------------------------------------------------------*/ /** @defgroup DCMIEx_Exported_Types DCMI Extended Exported Types * @{ */ /** * @brief DCMIEx Embedded Synchronisation CODE Init structure definition */ typedef struct { uint8_t FrameStartCode; /*!< Specifies the code of the frame start delimiter. */ uint8_t LineStartCode; /*!< Specifies the code of the line start delimiter. */ uint8_t LineEndCode; /*!< Specifies the code of the line end delimiter. */ uint8_t FrameEndCode; /*!< Specifies the code of the frame end delimiter. */ }DCMI_CodesInitTypeDef; /** * @brief DCMI Init structure definition */ typedef struct { uint32_t SynchroMode; /*!< Specifies the Synchronization Mode: Hardware or Embedded. This parameter can be a value of @ref DCMI_Synchronization_Mode */ uint32_t PCKPolarity; /*!< Specifies the Pixel clock polarity: Falling or Rising. This parameter can be a value of @ref DCMI_PIXCK_Polarity */ uint32_t VSPolarity; /*!< Specifies the Vertical synchronization polarity: High or Low. This parameter can be a value of @ref DCMI_VSYNC_Polarity */ uint32_t HSPolarity; /*!< Specifies the Horizontal synchronization polarity: High or Low. This parameter can be a value of @ref DCMI_HSYNC_Polarity */ uint32_t CaptureRate; /*!< Specifies the frequency of frame capture: All, 1/2 or 1/4. This parameter can be a value of @ref DCMI_Capture_Rate */ uint32_t ExtendedDataMode; /*!< Specifies the data width: 8-bit, 10-bit, 12-bit or 14-bit. This parameter can be a value of @ref DCMI_Extended_Data_Mode */ DCMI_CodesInitTypeDef SyncroCode; /*!< Specifies the code of the frame start delimiter. */ uint32_t JPEGMode; /*!< Enable or Disable the JPEG mode This parameter can be a value of @ref DCMI_MODE_JPEG */ #if defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) uint32_t ByteSelectMode; /*!< Specifies the data to be captured by the interface This parameter can be a value of @ref DCMIEx_Byte_Select_Mode */ uint32_t ByteSelectStart; /*!< Specifies if the data to be captured by the interface is even or odd This parameter can be a value of @ref DCMIEx_Byte_Select_Start */ uint32_t LineSelectMode; /*!< Specifies the line of data to be captured by the interface This parameter can be a value of @ref DCMIEx_Line_Select_Mode */ uint32_t LineSelectStart; /*!< Specifies if the line of data to be captured by the interface is even or odd This parameter can be a value of @ref DCMIEx_Line_Select_Start */ #endif /* STM32F446xx || STM32F469xx || STM32F479xx */ }DCMI_InitTypeDef; /** * @} */ /* Exported constants --------------------------------------------------------*/ #if defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) /** @defgroup DCMIEx_Exported_Constants DCMI Exported Constants * @{ */ /** @defgroup DCMIEx_Byte_Select_Mode DCMI Byte Select Mode * @{ */ #define DCMI_BSM_ALL 0x00000000U /*!< Interface captures all received data */ #define DCMI_BSM_OTHER ((uint32_t)DCMI_CR_BSM_0) /*!< Interface captures every other byte from the received data */ #define DCMI_BSM_ALTERNATE_4 ((uint32_t)DCMI_CR_BSM_1) /*!< Interface captures one byte out of four */ #define DCMI_BSM_ALTERNATE_2 ((uint32_t)(DCMI_CR_BSM_0 | DCMI_CR_BSM_1)) /*!< Interface captures two bytes out of four */ /** * @} */ /** @defgroup DCMIEx_Byte_Select_Start DCMI Byte Select Start * @{ */ #define DCMI_OEBS_ODD 0x00000000U /*!< Interface captures first data from the frame/line start, second one being dropped */ #define DCMI_OEBS_EVEN ((uint32_t)DCMI_CR_OEBS) /*!< Interface captures second data from the frame/line start, first one being dropped */ /** * @} */ /** @defgroup DCMIEx_Line_Select_Mode DCMI Line Select Mode * @{ */ #define DCMI_LSM_ALL 0x00000000U /*!< Interface captures all received lines */ #define DCMI_LSM_ALTERNATE_2 ((uint32_t)DCMI_CR_LSM) /*!< Interface captures one line out of two */ /** * @} */ /** @defgroup DCMIEx_Line_Select_Start DCMI Line Select Start * @{ */ #define DCMI_OELS_ODD 0x00000000U /*!< Interface captures first line from the frame start, second one being dropped */ #define DCMI_OELS_EVEN ((uint32_t)DCMI_CR_OELS) /*!< Interface captures second line from the frame start, first one being dropped */ /** * @} */ /** * @} */ #endif /* STM32F446xx || STM32F469xx || STM32F479xx */ /* Exported macro ------------------------------------------------------------*/ /* Exported functions --------------------------------------------------------*/ /* Private types -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /* Private constants ---------------------------------------------------------*/ #define DCMI_POSITION_ESCR_LSC (uint32_t)DCMI_ESCR_LSC_Pos /*!< Required left shift to set line start delimiter */ #define DCMI_POSITION_ESCR_LEC (uint32_t)DCMI_ESCR_LEC_Pos /*!< Required left shift to set line end delimiter */ #define DCMI_POSITION_ESCR_FEC (uint32_t)DCMI_ESCR_FEC_Pos /*!< Required left shift to set frame end delimiter */ /* Private macro -------------------------------------------------------------*/ #if defined(STM32F446xx) || defined(STM32F469xx) || defined(STM32F479xx) /** @defgroup DCMIEx_Private_Macros DCMI Extended Private Macros * @{ */ #define IS_DCMI_BYTE_SELECT_MODE(MODE)(((MODE) == DCMI_BSM_ALL) || \ ((MODE) == DCMI_BSM_OTHER) || \ ((MODE) == DCMI_BSM_ALTERNATE_4) || \ ((MODE) == DCMI_BSM_ALTERNATE_2)) #define IS_DCMI_BYTE_SELECT_START(POLARITY)(((POLARITY) == DCMI_OEBS_ODD) || \ ((POLARITY) == DCMI_OEBS_EVEN)) #define IS_DCMI_LINE_SELECT_MODE(MODE)(((MODE) == DCMI_LSM_ALL) || \ ((MODE) == DCMI_LSM_ALTERNATE_2)) #define IS_DCMI_LINE_SELECT_START(POLARITY)(((POLARITY) == DCMI_OELS_ODD) || \ ((POLARITY) == DCMI_OELS_EVEN)) #endif /* STM32F446xx || STM32F469xx || STM32F479xx */ /** * @} */ /* Private functions ---------------------------------------------------------*/ #endif /* STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx ||\ STM32F429xx || STM32F439xx || STM32F446xx || STM32F469xx ||\ STM32F479xx */ /** * @} */ /** * @} */ #ifdef __cplusplus } #endif #endif /* __STM32F4xx_HAL_DCMI_H */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/