///////////////////////////////////////////////////////////////////////////////+
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/// -*- coding: UTF-8 -*-+
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///+
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/// \file   Discovery/Src/unit.c+
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/// \brief  input to meter/celsius or feet/farenheit+
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/// \author heinrichs weikamp gmbh+
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/// \date   24-Feb-2015+
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///+
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/// \details+
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///+
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/// $Id$+
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///////////////////////////////////////////////////////////////////////////////+
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/// \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh+
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///+
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///     This program is free software: you can redistribute it and/or modify+
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///     it under the terms of the GNU General Public License as published by+
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///     the Free Software Foundation, either version 3 of the License, or+
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///     (at your option) any later version.+
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///+
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///     This program is distributed in the hope that it will be useful,+
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///     but WITHOUT ANY WARRANTY; without even the implied warranty of+
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///     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+
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///     GNU General Public License for more details.+
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///+
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///     You should have received a copy of the GNU General Public License+
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///     along with this program.  If not, see <http://www.gnu.org/licenses/>.+
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//////////////////////////////////////////////////////////////////////////////+
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+
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/* Includes ------------------------------------------------------------------*/+
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#include "unit.h"+
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#include "settings.h"+
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+
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/* Exported variables --------------------------------------------------------*/+
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+
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/* Private types -------------------------------------------------------------*/+
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uint8_t  test;+
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+
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/* Private variables ---------------------------------------------------------*/+
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+
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/* Private variables with external access via get_xxx() function -------------*/+
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+
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/* Private function prototypes -----------------------------------------------*/+
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+
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/* Announced function prototypes -----------------------------------------------*/+
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+
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/* Exported functions --------------------------------------------------------*/+
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+
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char unit_depth_char1_T105(void)+
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{+
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    if(settingsGetPointer()->nonMetricalSystem)+
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        return 'f';+
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    else+
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        return 'm';+
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}+
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+
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char unit_depth_char2_T105(void)+
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{+
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    if(settingsGetPointer()->nonMetricalSystem)+
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        return 't';+
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    else+
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        return '\004'; // 004 is nop+
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}+
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+
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char unit_depth_char1(void)+
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{+
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    if(settingsGetPointer()->nonMetricalSystem)+
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        return 'f';+
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    else+
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        return 'm';+
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}+
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+
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char unit_depth_char2(void)+
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{+
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    if(settingsGetPointer()->nonMetricalSystem)+
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        return 't';+
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    else+
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        return '\004'; // 004 is nop+
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}+
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+
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float unit_depth_float(float input_meter)+
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{+
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    if(settingsGetPointer()->nonMetricalSystem == 0)+
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        return input_meter;+
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    else+
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    {+
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        return 3.2808f * input_meter;+
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    }+
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}+
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+
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uint16_t unit_depth_integer(uint16_t input_meter)+
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{+
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    if(settingsGetPointer()->nonMetricalSystem == 0)+
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        return input_meter;+
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    else+
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    {+
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        return (input_meter * 10) / 3;+
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    }+
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}+
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+
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float unit_temperature_float(float input_celsius)+
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{+
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    if(settingsGetPointer()->nonMetricalSystem == 0)+
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        return input_celsius;+
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    else+
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    {+
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        return input_celsius * (9.0f/5.0f) + 32;+
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    }+
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}+
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+
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int16_t unit_temperature_integer(int16_t input_celsius)+
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{+
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    if(settingsGetPointer()->nonMetricalSystem == 0)+
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        return input_celsius;+
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    else+
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    {+
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        return ((input_celsius * 9 / 5) + 32);+
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    }+
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}+
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+
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uint16_t unit_speed_integer(uint16_t input_meterPerMinute)+
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{+
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    if(settingsGetPointer()->nonMetricalSystem == 0)+
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        return input_meterPerMinute;+
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    else+
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    {+
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        return (input_meterPerMinute * 10) / 3;+
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    }+
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}+
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+
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/* Quelle: https://de.wikipedia.org/wiki/Luftdruck */+
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/*+
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const float luftdruckStartMinus300[15] =+
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{+
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    1.0530f,+
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    1.0396f,+
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    1.0263f,+
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    1.01325f, // 0 m+
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    1.0003f,+
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    0.9876f,+
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    0.9750f,+
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    0.9625f,+
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    0.9503f,+
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    0.9381f,+
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    0.9262f,+
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    0.9144f,+
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    0.9027f,+
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    0.8912f, // 1000 m+
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    0.8358f+
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};+
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*/+
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+
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const int luftdruckStartMinus300[15] =+
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{+
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    1053,+
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    1040,+
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    1026,+
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    1013, // 0 m+
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    1000,+
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     988,+
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     975,+
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     962,+
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     950,+
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     938,+
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     926,+
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     914,+
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     903,+
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     891, // 1000 m+
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     836+
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};+
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+
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+
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int unit_SeaLevelRelation_integer(int input_atmospheric_mbar)+
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{+
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    int i = 0;+
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    int distance1, distance2;+
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    for(i=0;i<15;i++)+
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    {+
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        if(input_atmospheric_mbar >= luftdruckStartMinus300[i])+
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            break;+
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    }+
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+
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    if(i >= 14)+
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        return 1500;+
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    else if(i == 0)+
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        return -300;+
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    else+
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    {+
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        distance1 = input_atmospheric_mbar - luftdruckStartMinus300[i];+
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        distance2 = luftdruckStartMinus300[i-1] - input_atmospheric_mbar;+
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        if(distance2 < distance1)+
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            i -= 1;+
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        return (i*100) - 300;+
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    }+
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}+
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