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Buelmann: new implementation for ceiling Since my first functional fix in the ceiling computation in commit ceecabfddb57, I noticed that the computation used a linear search, that became rather computational expensive after that commit. The simple question is: why not a binary search? So, this commit implements the binary search. But there is a long story attached to this. Comparing ceiling results from hwOS and this OSTC4 code were very different. Basically, the original OSTC4 algorithm computed the ceiling using the same GFlow to GFhigh slope, in such a way, that the ceiling was in sync with the presented deco stops, where the hwOS code presents a GFhigh based ceiling. This said, it is more logical when the OSTC4 and hwOS code give similar results. This new recursive algorithm gives very similar results for the ceiling compared to hwOS. To be complete here, the Buelmann ceiling is the depth to which you can ascend, so that the leading tissue reaches GFhigh. This also explains why the deepest deco stop is normally deeper than the ceiling (unless one dives with GF like 80/80). The code implemented here is rather straightforward recursion. Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author Jan Mulder <jlmulder@xs4all.nl>
date Thu, 11 Apr 2019 17:48:48 +0200
parents 5f11787b4f42
children 37ee61f93124
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///////////////////////////////////////////////////////////////////////////////
/// -*- coding: UTF-8 -*-
///
/// \file   Discovery/Inc/ostc.h
/// \brief  Hardware specific configuration
/// \author heinrichs weikamp gmbh
/// \date   05-Dec-2014
///
/// $Id$
///////////////////////////////////////////////////////////////////////////////
/// \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 OSTC_H
#define OSTC_H

//#define OSTC_ON_DISCOVERY_HARDWARE

/* Includes ------------------------------------------------------------------*/
//#include "stm32f4xx_hal_conf.h"
#include "stm32f4xx_hal.h"
#include "stm32f4xx_hal_spi.h"

#ifdef OSTC_ON_DISCOVERY_HARDWARE
 #include "ostc_discovery.h"
#else
 #include "ostc_hw2.h"
// #include "ostc_hw1.h"
#endif

#define SDRAM_TIMEOUT                            ((uint32_t)0xFFFF)
#define SDRAM_MEMORY_WIDTH                       FMC_SDRAM_MEM_BUS_WIDTH_16
#define SDCLOCK_PERIOD                           FMC_SDRAM_CLOCK_PERIOD_3
#define SDRAM_MODEREG_BURST_LENGTH_1             ((uint16_t)0x0000)
#define SDRAM_MODEREG_BURST_LENGTH_2             ((uint16_t)0x0001)
#define SDRAM_MODEREG_BURST_LENGTH_4             ((uint16_t)0x0002)
#define SDRAM_MODEREG_BURST_LENGTH_8             ((uint16_t)0x0004)
#define SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL      ((uint16_t)0x0000)
#define SDRAM_MODEREG_BURST_TYPE_INTERLEAVED     ((uint16_t)0x0008)
#define SDRAM_MODEREG_CAS_LATENCY_2              ((uint16_t)0x0020)
#define SDRAM_MODEREG_CAS_LATENCY_3              ((uint16_t)0x0030)
#define SDRAM_MODEREG_OPERATING_MODE_STANDARD    ((uint16_t)0x0000)
#define SDRAM_MODEREG_WRITEBURST_MODE_PROGRAMMED ((uint16_t)0x0000)
#define SDRAM_MODEREG_WRITEBURST_MODE_SINGLE     ((uint16_t)0x0200)

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

extern SPI_HandleTypeDef hspiDisplay;
extern SPI_HandleTypeDef cpu2DmaSpi;

extern UART_HandleTypeDef UartHandle;
extern __IO ITStatus UartReady;


#ifdef USART_IR_HUD
extern UART_HandleTypeDef UartIR_HUD_Handle;
#endif
extern __IO ITStatus UartReadyHUD;

#ifdef USART_PIEZO
extern UART_HandleTypeDef UartPiezoTxHandle;
#endif

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

void MX_SPI_Init(void);
void MX_GPIO_Init(void);
void MX_UART_Init(void);
uint8_t MX_UART_ButtonAdjust(uint8_t *array);

void MX_SmallCPU_Reset_To_Boot(void);
void MX_SmallCPU_Reset_To_Standard(void);
void MX_SmallCPU_NO_Reset_Helper(void);

void MX_tell_reset_logik_alles_ok(void);

void MX_Bluetooth_PowerOn(void);
void MX_Bluetooth_PowerOff(void);

void MX_GPIO_Backlight_max_static_only_Init(void);

void MX_GPIO_One_Button_only_Init(void);
GPIO_PinState MX_GPIO_Read_The_One_Button(void);

void MX_TestPin_High(void);
void MX_TestPin_Low(void);


#endif // OSTC_H