view Discovery/Src/unit.c @ 539:d784f281833a

Added inertia simulation for compass heading: In previous version calculated compass values were directly used for visualization of the compass. This causes a fast changing (jumping) of values. With the inertia introduction the compass behalfs more like an analog compass. The final value is reached slowly and the displayed values are more stable. For configuration a new menu item has been added to the compass menu allowing to switch inertia off (default), small and large inertia simulation
author Ideenmodellierer
date Sat, 10 Oct 2020 16:59:18 +0200
parents 5f11787b4f42
children 1c95f811967c
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///////////////////////////////////////////////////////////////////////////////
/// -*- coding: UTF-8 -*-
///
/// \file   Discovery/Src/unit.c
/// \brief  input to meter/celsius or feet/farenheit
/// \author heinrichs weikamp gmbh
/// \date   24-Feb-2015
///
/// \details
///
/// $Id$
///////////////////////////////////////////////////////////////////////////////
/// \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/>.
//////////////////////////////////////////////////////////////////////////////

/* Includes ------------------------------------------------------------------*/
#include "unit.h"
#include "settings.h"

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

/* Private types -------------------------------------------------------------*/
uint8_t  test;

/* Private variables ---------------------------------------------------------*/

/* Private variables with external access via get_xxx() function -------------*/

/* Private function prototypes -----------------------------------------------*/

/* Announced function prototypes -----------------------------------------------*/

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

char unit_depth_char1_T105(void)
{
    if(settingsGetPointer()->nonMetricalSystem)
        return '\'';
    else
        return 'm';
}

char unit_depth_char2_T105(void)
{
    if(settingsGetPointer()->nonMetricalSystem)
        return ' ';
    else
        return '\004'; // 004 is nop
}

char unit_depth_char1(void)
{
    if(settingsGetPointer()->nonMetricalSystem)
        return 'f';
    else
        return 'm';
}

char unit_depth_char2(void)
{
    if(settingsGetPointer()->nonMetricalSystem)
        return 't';
    else
        return '\004'; // 004 is nop
}

float unit_depth_float(float input_meter)
{
    if(settingsGetPointer()->nonMetricalSystem == 0)
        return input_meter;
    else
    {
        return 3.2808f * input_meter;
    }
}

uint16_t unit_depth_integer(uint16_t input_meter)
{
    if(settingsGetPointer()->nonMetricalSystem == 0)
        return input_meter;
    else
    {
        return (input_meter * 10) / 3;
    }
}

float unit_temperature_float(float input_celsius)
{
    if(settingsGetPointer()->nonMetricalSystem == 0)
        return input_celsius;
    else
    {
        return input_celsius * (9.0f/5.0f) + 32;
    }
}

uint16_t unit_speed_integer(uint16_t input_meterPerMinute)
{
    if(settingsGetPointer()->nonMetricalSystem == 0)
        return input_meterPerMinute;
    else
    {
        return (input_meterPerMinute * 10) / 3;
    }
}

/* Quelle: https://de.wikipedia.org/wiki/Luftdruck */
/*
const float luftdruckStartMinus300[15] =
{
    1.0530f,
    1.0396f,
    1.0263f,
    1.01325f, // 0 m
    1.0003f,
    0.9876f,
    0.9750f,
    0.9625f,
    0.9503f,
    0.9381f,
    0.9262f,
    0.9144f,
    0.9027f,
    0.8912f, // 1000 m
    0.8358f
};
*/

const int luftdruckStartMinus300[15] =
{
    1053,
    1040,
    1026,
    1013, // 0 m
    1000,
     988,
     975,
     962,
     950,
     938,
     926,
     914,
     903,
     891, // 1000 m
     836
};


int unit_SeaLevelRelation_integer(int input_atmospheric_mbar)
{
    int i = 0;
    int distance1, distance2;
    for(i=0;i<15;i++)
    {
        if(input_atmospheric_mbar >= luftdruckStartMinus300[i])
            break;
    }

    if(i >= 14)
        return 1500;
    else if(i == 0)
        return -300;
    else
    {
        distance1 = input_atmospheric_mbar - luftdruckStartMinus300[i];
        distance2 = luftdruckStartMinus300[i-1] - input_atmospheric_mbar;
        if(distance2 < distance1)
            i -= 1;
        return (i*100) - 300;
    }
}