view Common/Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_msp_template.c @ 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_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
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  * 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****/