annotate Discovery/Src/unit.c @ 306:2f43419102c8 cleanup-4

bugfix, cleanup: do not clip depth to 0 A real dive with the previous commits shows that testing from the simulator cannot be fully trusted in relation to logic that is close to the depth sensor (that is obviously bypassed using the simulator). So 1) there is 3 second interval between the stopwatch and the divetime, and 2) the depth flips from 1m depth to surface 0m depth, and that is visible in the profile data. Point 2) is definitely caused by the removed code in this commit. It likely is not right to clip the depth value at all. It is fine to base decisions like is done in is_ambient_pressure_close_to_surface on it, but clipping the depth value itself is seems wrong. This has become more prominent with commit eba8d1eb5bef where the clipping depth changed from 40cm of depth to 1m of depth. When comparing profiles from an OSTC Plus, it shows that no depth clipping is present there, so that is one more argument to remove it here. Point 1) The 3 sec interval is likely not a coincidence. It is the time to travel for 1m depth with a default descend speed of 20m/min. Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author Jan Mulder <jlmulder@xs4all.nl>
date Wed, 22 May 2019 14:39:04 +0200
parents 5f11787b4f42
children 1c95f811967c
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1 ///////////////////////////////////////////////////////////////////////////////
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2 /// -*- coding: UTF-8 -*-
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3 ///
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4 /// \file Discovery/Src/unit.c
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5 /// \brief input to meter/celsius or feet/farenheit
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6 /// \author heinrichs weikamp gmbh
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7 /// \date 24-Feb-2015
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8 ///
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9 /// \details
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10 ///
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11 /// $Id$
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12 ///////////////////////////////////////////////////////////////////////////////
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13 /// \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh
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14 ///
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15 /// This program is free software: you can redistribute it and/or modify
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16 /// it under the terms of the GNU General Public License as published by
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17 /// the Free Software Foundation, either version 3 of the License, or
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18 /// (at your option) any later version.
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19 ///
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20 /// This program is distributed in the hope that it will be useful,
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21 /// but WITHOUT ANY WARRANTY; without even the implied warranty of
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22 /// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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23 /// GNU General Public License for more details.
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24 ///
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25 /// You should have received a copy of the GNU General Public License
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26 /// along with this program. If not, see <http://www.gnu.org/licenses/>.
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27 //////////////////////////////////////////////////////////////////////////////
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28
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29 /* Includes ------------------------------------------------------------------*/
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30 #include "unit.h"
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31 #include "settings.h"
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32
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33 /* Exported variables --------------------------------------------------------*/
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34
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35 /* Private types -------------------------------------------------------------*/
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36 uint8_t test;
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37
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38 /* Private variables ---------------------------------------------------------*/
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39
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40 /* Private variables with external access via get_xxx() function -------------*/
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41
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42 /* Private function prototypes -----------------------------------------------*/
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43
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44 /* Announced function prototypes -----------------------------------------------*/
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45
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46 /* Exported functions --------------------------------------------------------*/
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47
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48 char unit_depth_char1_T105(void)
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49 {
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50 if(settingsGetPointer()->nonMetricalSystem)
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51 return '\'';
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52 else
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53 return 'm';
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54 }
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55
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56 char unit_depth_char2_T105(void)
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57 {
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58 if(settingsGetPointer()->nonMetricalSystem)
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59 return ' ';
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60 else
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61 return '\004'; // 004 is nop
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62 }
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63
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64 char unit_depth_char1(void)
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65 {
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66 if(settingsGetPointer()->nonMetricalSystem)
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67 return 'f';
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68 else
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69 return 'm';
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70 }
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71
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72 char unit_depth_char2(void)
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73 {
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74 if(settingsGetPointer()->nonMetricalSystem)
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75 return 't';
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76 else
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77 return '\004'; // 004 is nop
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78 }
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79
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80 float unit_depth_float(float input_meter)
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81 {
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82 if(settingsGetPointer()->nonMetricalSystem == 0)
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83 return input_meter;
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84 else
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85 {
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86 return 3.2808f * input_meter;
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87 }
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88 }
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89
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90 uint16_t unit_depth_integer(uint16_t input_meter)
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91 {
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92 if(settingsGetPointer()->nonMetricalSystem == 0)
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93 return input_meter;
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94 else
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95 {
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96 return (input_meter * 10) / 3;
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97 }
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98 }
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99
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100 float unit_temperature_float(float input_celsius)
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101 {
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102 if(settingsGetPointer()->nonMetricalSystem == 0)
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103 return input_celsius;
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104 else
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105 {
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106 return input_celsius * (9.0f/5.0f) + 32;
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107 }
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108 }
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109
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110 uint16_t unit_speed_integer(uint16_t input_meterPerMinute)
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111 {
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112 if(settingsGetPointer()->nonMetricalSystem == 0)
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113 return input_meterPerMinute;
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114 else
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115 {
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116 return (input_meterPerMinute * 10) / 3;
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117 }
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118 }
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119
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120 /* Quelle: https://de.wikipedia.org/wiki/Luftdruck */
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121 /*
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122 const float luftdruckStartMinus300[15] =
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123 {
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124 1.0530f,
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125 1.0396f,
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126 1.0263f,
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127 1.01325f, // 0 m
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128 1.0003f,
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129 0.9876f,
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130 0.9750f,
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131 0.9625f,
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132 0.9503f,
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133 0.9381f,
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134 0.9262f,
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135 0.9144f,
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136 0.9027f,
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137 0.8912f, // 1000 m
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138 0.8358f
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139 };
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140 */
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141
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142 const int luftdruckStartMinus300[15] =
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143 {
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144 1053,
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145 1040,
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146 1026,
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147 1013, // 0 m
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148 1000,
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149 988,
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150 975,
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151 962,
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152 950,
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153 938,
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154 926,
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155 914,
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156 903,
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157 891, // 1000 m
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158 836
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159 };
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160
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161
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162 int unit_SeaLevelRelation_integer(int input_atmospheric_mbar)
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163 {
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164 int i = 0;
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165 int distance1, distance2;
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166 for(i=0;i<15;i++)
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167 {
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168 if(input_atmospheric_mbar >= luftdruckStartMinus300[i])
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169 break;
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170 }
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171
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172 if(i >= 14)
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173 return 1500;
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174 else if(i == 0)
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175 return -300;
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176 else
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177 {
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178 distance1 = input_atmospheric_mbar - luftdruckStartMinus300[i];
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179 distance2 = luftdruckStartMinus300[i-1] - input_atmospheric_mbar;
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180 if(distance2 < distance1)
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181 i -= 1;
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182 return (i*100) - 300;
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183 }
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184 }