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1 | ingob | 1 | /*#######################################################################################*/ |
41 | ingob | 2 | /*#######################################################################################*/ |
3 | |||
4 | // IMPORTANT NOTE: |
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5 | |||
6 | // This is only a dummy implementation for errorfree compiling of the NaviCtrl sources. |
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7 | |||
8 | // The GPS navigation routines are NOT included ! |
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9 | |||
10 | /*#######################################################################################*/ |
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11 | /*#######################################################################################*/ |
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1 | ingob | 12 | /* !!! THIS IS NOT FREE SOFTWARE !!! */ |
13 | /*#######################################################################################*/ |
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14 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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15 | // + Copyright (c) 2008 Ingo Busker, Holger Buss |
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16 | // + Nur für den privaten Gebrauch |
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17 | // + FOR NON COMMERCIAL USE ONLY |
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18 | // + www.MikroKopter.com |
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19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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41 | ingob | 20 | // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
21 | // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
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22 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
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23 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
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1 | ingob | 24 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
25 | // + Verkauf von Luftbildaufnahmen, usw. |
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26 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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41 | ingob | 27 | // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
1 | ingob | 28 | // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
29 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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30 | // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
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31 | // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
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32 | // + eindeutig als Ursprung verlinkt werden |
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33 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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34 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
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35 | // + Benutzung auf eigene Gefahr |
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36 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
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37 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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41 | ingob | 38 | // + Die PORTIERUNG der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
1 | ingob | 39 | // + mit unserer Zustimmung zulässig |
40 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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41 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
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42 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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41 | ingob | 43 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
1 | ingob | 44 | // + this list of conditions and the following disclaimer. |
45 | // + * Neither the name of the copyright holders nor the names of contributors may be used to endorse or promote products derived |
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46 | // + from this software without specific prior written permission. |
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41 | ingob | 47 | // + * The use of this project (hardware, software, binary files, sources and documentation) is only permitted |
1 | ingob | 48 | // + for non-commercial use (directly or indirectly) |
41 | ingob | 49 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
1 | ingob | 50 | // + with our written permission |
41 | ingob | 51 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
52 | // + clearly linked as origin |
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1 | ingob | 53 | // + * PORTING this software (or part of it) to systems (other than hardware from www.mikrokopter.de) is NOT allowed |
54 | // |
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55 | // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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56 | // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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57 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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58 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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59 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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60 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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61 | // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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62 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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63 | // + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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64 | // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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41 | ingob | 65 | // + POSSIBILITY OF SUCH DAMAGE. |
1 | ingob | 66 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
41 | ingob | 67 | #include <stdio.h> |
68 | #include <stdlib.h> |
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69 | #include <math.h> |
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70 | #include "91x_lib.h" |
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1 | ingob | 71 | #include "main.h" |
41 | ingob | 72 | #include "uart1.h" |
73 | #include "GPS.h" |
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74 | #include "timer.h" |
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75 | #include "spi_slave.h" |
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76 | #include "waypoints.h" |
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77 | #include "i2c.h" |
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1 | ingob | 78 | |
79 | |||
41 | ingob | 80 | #define M_PI_180 (M_PI / 180.0f) |
81 | #define GPS_UPDATETIME_MS 200 // 200ms is 5 Hz |
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82 | typedef enum |
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83 | { |
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84 | GPS_FLIGHT_MODE_UNDEF, |
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85 | GPS_FLIGHT_MODE_FREE, |
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86 | GPS_FLIGHT_MODE_AID, |
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87 | GPS_FLIGHT_MODE_WAYPOINT |
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88 | } GPS_FlightMode_t; |
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1 | ingob | 89 | |
41 | ingob | 90 | typedef struct |
91 | { |
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92 | float Gain; |
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93 | float P; |
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94 | float I; |
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95 | float D; |
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96 | float A; |
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97 | float ACC; |
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98 | u8 MinSat; |
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99 | s8 StickThreshold; |
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100 | float WindCorrection; |
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101 | s32 OperatingRadius; |
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102 | u32 NaviAngleLimitation; |
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103 | GPS_FlightMode_t FlightMode; |
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104 | } __attribute__((packed)) GPS_Parameter_t; |
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1 | ingob | 105 | |
41 | ingob | 106 | typedef struct |
107 | { |
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108 | Status_t Status; // invalid, newdata, processed |
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109 | s32 North; // in cm |
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110 | s32 East; // in cm |
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111 | s32 Bearing; // in deg |
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112 | s32 Distance; // in cm |
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113 | } __attribute__((packed)) GPS_Deviation_t; |
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114 | GPS_Deviation_t TargetDeviation; |
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115 | |||
116 | GPS_Stick_t GPS_Stick; |
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117 | GPS_Parameter_t GPS_Parameter; |
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118 | |||
119 | // the gps reference positions |
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120 | GPS_Pos_t GPS_HoldPosition = {0,0,0, INVALID}; // the hold position |
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121 | GPS_Pos_t GPS_HomePosition = {0,0,0, INVALID}; // the home position |
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122 | GPS_Pos_t * GPS_pTargetPosition = NULL; // pointer to the actual target position |
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123 | Waypoint_t* GPS_pWaypoint = NULL; // pointer to the actual waypoint |
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124 | |||
125 | //------------------------------------------------------------- |
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126 | // Update GPSParamter |
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127 | void GPS_UpdateParameter(void) |
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128 | { |
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129 | static GPS_FlightMode_t FlightMode_Old = GPS_FLIGHT_MODE_UNDEF; |
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130 | // in case of bad receiving conditions |
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131 | if(FC.RC_Quality < 100) |
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132 | { // set fixed parameter |
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133 | GPS_Parameter.FlightMode = GPS_FLIGHT_MODE_FREE; |
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134 | GPS_Parameter.Gain = (float) 100; |
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135 | GPS_Parameter.P = (float) 90; |
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136 | GPS_Parameter.I = (float) 90; |
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137 | GPS_Parameter.D = (float) 90; |
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138 | GPS_Parameter.A = (float) 90; |
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139 | GPS_Parameter.ACC = (float) 0; |
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140 | GPS_Parameter.MinSat = 6; |
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141 | GPS_Parameter.StickThreshold = 8; |
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142 | GPS_Parameter.WindCorrection = 0.0; |
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143 | GPS_Parameter.OperatingRadius = 0; // forces the aircraft to fly to home positon |
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144 | GPS_Parameter.NaviAngleLimitation = 125; |
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145 | } |
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146 | else |
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147 | { |
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148 | // update parameter from FC |
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149 | if(StopNavigation) GPS_Parameter.FlightMode = GPS_FLIGHT_MODE_FREE; |
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150 | else |
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151 | { |
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152 | if (Parameter.NaviGpsModeControl < 50) GPS_Parameter.FlightMode = GPS_FLIGHT_MODE_AID; |
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153 | else if(Parameter.NaviGpsModeControl < 180) GPS_Parameter.FlightMode = GPS_FLIGHT_MODE_FREE; |
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154 | else GPS_Parameter.FlightMode = GPS_FLIGHT_MODE_WAYPOINT; |
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155 | } |
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156 | GPS_Parameter.Gain = (float)Parameter.NaviGpsGain; |
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157 | GPS_Parameter.P = (float)Parameter.NaviGpsP; |
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158 | GPS_Parameter.I = (float)Parameter.NaviGpsI; |
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159 | GPS_Parameter.D = (float)Parameter.NaviGpsD; |
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160 | GPS_Parameter.A = (float)Parameter.NaviGpsD; |
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161 | GPS_Parameter.ACC = (float)Parameter.NaviGpsACC; |
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162 | GPS_Parameter.MinSat = (u8)Parameter.NaviGpsMinSat; |
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163 | GPS_Parameter.StickThreshold = (s8)Parameter.NaviStickThreshold; |
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164 | GPS_Parameter.WindCorrection = (float)Parameter.NaviWindCorrection; |
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165 | GPS_Parameter.OperatingRadius = (s32)Parameter.NaviOperatingRadius * 100; // conversion of m to cm |
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166 | GPS_Parameter.NaviAngleLimitation = (u32) Parameter.NaviAngleLimitation * 2; |
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167 | } |
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168 | // FlightMode changed? |
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169 | if(GPS_Parameter.FlightMode != FlightMode_Old) BeepTime = 100; // beep to indicate that mode has switched |
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170 | FlightMode_Old = GPS_Parameter.FlightMode; |
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171 | } |
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172 | |||
173 | //------------------------------------------------------------- |
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174 | // This function defines a good GPS signal condition |
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175 | u8 GPS_IsSignalOK(void) |
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176 | { |
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177 | if( (GPSData.Status != INVALID) && (GPSData.SatFix == SATFIX_3D) && (GPSData.NumOfSats >= GPS_Parameter.MinSat)) return(1); |
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178 | else return(0); |
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179 | } |
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180 | |||
1 | ingob | 181 | //------------------------------------------------------------ |
41 | ingob | 182 | // Checks for manual control action |
183 | u8 GPS_IsManuallyControlled(void) |
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184 | { |
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185 | if( ( (abs(FC.StickNick) > GPS_Parameter.StickThreshold) || (abs(FC.StickRoll) > GPS_Parameter.StickThreshold)) && (GPS_Parameter.StickThreshold > 0)) return 1; |
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186 | else return 0; |
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187 | } |
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188 | |||
189 | //------------------------------------------------------------ |
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190 | // copy GPS position from source position to target position |
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191 | u8 GPS_CopyPosition(GPS_Pos_t * pGPSPosSrc, GPS_Pos_t* pGPSPosTgt) |
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192 | { |
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193 | u8 retval = 0; |
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194 | if((pGPSPosSrc == NULL) || (pGPSPosTgt == NULL)) return(retval); // bad pointer |
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195 | // copy only valid positions |
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196 | if(pGPSPosSrc->Status != INVALID) |
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197 | { |
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198 | // if the source GPS position is not invalid |
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199 | pGPSPosTgt->Longitude = pGPSPosSrc->Longitude; |
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200 | pGPSPosTgt->Latitude = pGPSPosSrc->Latitude; |
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201 | pGPSPosTgt->Altitude = pGPSPosSrc->Altitude; |
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202 | pGPSPosTgt->Status = NEWDATA; // mark data in target position as new |
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203 | retval = 1; |
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204 | } |
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205 | return(retval); |
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206 | } |
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207 | |||
208 | //------------------------------------------------------------ |
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209 | // clear position data |
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210 | u8 GPS_ClearPosition(GPS_Pos_t * pGPSPos) |
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211 | { |
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212 | u8 retval = FALSE; |
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213 | if(pGPSPos == NULL) return(retval); // bad pointer |
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214 | else |
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215 | { |
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216 | pGPSPos->Longitude = 0; |
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217 | pGPSPos->Latitude = 0; |
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218 | pGPSPos->Altitude = 0; |
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219 | pGPSPos->Status = INVALID; |
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220 | retval = TRUE; |
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221 | } |
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222 | return (retval); |
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223 | } |
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224 | |||
225 | |||
226 | //------------------------------------------------------------ |
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227 | void GPS_Neutral() |
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228 | { |
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229 | GPS_Stick.Nick = 0; |
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230 | GPS_Stick.Roll = 0; |
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231 | GPS_Stick.Yaw = 0; |
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232 | } |
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233 | |||
234 | //------------------------------------------------------------ |
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1 | ingob | 235 | void GPS_Init(void) |
236 | { |
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41 | ingob | 237 | SerialPutString("\r\n GPS init..."); |
238 | UBX_Init(); |
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239 | GPS_Neutral(); |
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240 | GPS_ClearPosition(&GPS_HoldPosition); |
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241 | GPS_ClearPosition(&GPS_HomePosition); |
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242 | GPS_pTargetPosition = NULL; |
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243 | WPList_Init(); |
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244 | GPS_pWaypoint = WPList_Begin(); |
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245 | GPS_UpdateParameter(); |
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246 | SerialPutString("ok"); |
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247 | } |
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1 | ingob | 248 | |
41 | ingob | 249 | //------------------------------------------------------------ |
250 | // calculate the bearing to target position from its deviation |
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251 | s32 DirectionToTarget_N_E(float northdev, float eastdev) |
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252 | { |
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253 | s32 bearing; |
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254 | bearing = (s32)(atan2(northdev, eastdev) / M_PI_180); |
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255 | bearing = (270L - bearing)%360L; |
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256 | return(bearing); |
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1 | ingob | 257 | } |
41 | ingob | 258 | |
259 | |||
1 | ingob | 260 | //------------------------------------------------------------ |
41 | ingob | 261 | // Rescale xy-vector length if length limit is violated |
262 | void GPS_LimitXY(s32 *x, s32 *y, s32 limit) |
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263 | { |
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264 | s32 dist; |
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265 | dist = (s32)hypot(*x,*y); // the length of the vector |
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266 | if ((dist != 0L) && (dist > limit)) |
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267 | // if vector length is larger than the given limit |
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268 | { // scale vector compontents so that the length is cut off to limit |
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269 | *x = (*x * limit) / dist; |
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270 | *y = (*y * limit) / dist; |
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271 | } |
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272 | } |
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1 | ingob | 273 | |
41 | ingob | 274 | //------------------------------------------------------------ |
275 | // transform the integer deg into float radians |
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276 | inline double RadiansFromGPS(s32 deg) |
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1 | ingob | 277 | { |
41 | ingob | 278 | return ((double)deg * 1e-7f * M_PI_180); // 1E-7 because deg is the value in ° * 1E7 |
279 | } |
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1 | ingob | 280 | |
41 | ingob | 281 | //------------------------------------------------------------ |
282 | // transform the integer deg into float deg |
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283 | inline double DegFromGPS(s32 deg) |
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284 | { |
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285 | return ((double)deg * 1e-7f); // 1E-7 because deg is the value in ° * 1E7 |
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286 | } |
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1 | ingob | 287 | |
41 | ingob | 288 | //------------------------------------------------------------ |
289 | // calculate the deviation from the current position to the target position |
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290 | u8 GPS_CalculateDeviation(GPS_Pos_t * pCurrentPos, GPS_Pos_t * pTargetPos) |
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291 | { |
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292 | double temp1, temp2; |
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293 | // if given pointer is NULL |
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294 | if((pCurrentPos == NULL) || (pTargetPos == NULL)) goto baddata; |
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295 | // if positions are invalid |
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296 | if((pCurrentPos->Status == INVALID) || (pTargetPos->Status == INVALID)) goto baddata; |
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1 | ingob | 297 | |
41 | ingob | 298 | // The deviation from the current to the target position along north and east direction is |
299 | // simple the lat/lon difference. To convert that angular deviation into an |
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300 | // arc length the spherical projection has to be considered. |
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301 | // The mean earth radius is 6371km. Therfore the arc length per latitude degree |
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302 | // is always 6371km * 2 * Pi / 360deg = 111.2 km/deg. |
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303 | // The arc length per longitude degree depends on the correspondig latitude and |
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304 | // is 111.2km * cos(latitude). |
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1 | ingob | 305 | |
41 | ingob | 306 | // calculate the shortest longitude deviation from target |
307 | temp1 = DegFromGPS(pCurrentPos->Longitude) - DegFromGPS(pTargetPos->Longitude); |
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308 | // outside an angular difference of -180 deg ... +180 deg its shorter to go the other way around |
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309 | // In our application we wont fly more than 20.000 km but along the date line this is important. |
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310 | if(temp1 > 180.0f) temp1 -= 360.0f; |
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311 | else if (temp1 < -180.0f) temp1 += 360.0f; |
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312 | temp1 *= cos(RadiansFromGPS(pTargetPos->Latitude)); |
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313 | // calculate latitude deviation from target |
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314 | // this is allways within -180 deg ... 180 deg |
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315 | temp2 = DegFromGPS(pCurrentPos->Latitude) - DegFromGPS(pTargetPos->Latitude); |
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316 | // deviation from target position in cm |
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317 | // i.e. the distance to walk from the target in northern and eastern direction to reach the current position |
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318 | |||
319 | TargetDeviation.Status = INVALID; |
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320 | TargetDeviation.North = (s32)(11119492.7f * temp2); |
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321 | TargetDeviation.East = (s32)(11119492.7f * temp1); |
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322 | // If the position deviation is small enough to neglect the earth curvature |
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323 | // (this is for our application always fulfilled) the distance to target |
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324 | // can be calculated by the pythagoras of north and east deviation. |
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325 | TargetDeviation.Distance = (s32)(11119492.7f * hypot(temp1, temp2)); |
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326 | if (TargetDeviation.Distance == 0L) TargetDeviation.Bearing = 0L; |
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327 | else TargetDeviation.Bearing = DirectionToTarget_N_E(temp2, temp1); |
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328 | TargetDeviation.Status = NEWDATA; |
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329 | return TRUE; |
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330 | |||
331 | baddata: |
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332 | TargetDeviation.North = 0L; |
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333 | TargetDeviation.East = 0L; |
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334 | TargetDeviation.Distance = 0L; |
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335 | TargetDeviation.Bearing = 0L; |
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336 | TargetDeviation.Status = INVALID; |
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337 | return FALSE; |
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338 | } |
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339 | |||
340 | //------------------------------------------------------------ |
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341 | void GPS_Navigation(void) |
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342 | { |
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343 | static u32 beep_rythm; |
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344 | static u32 GPSDataTimeout = 0; |
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345 | |||
346 | // pointer to current target position |
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347 | static GPS_Pos_t * pTargetPositionOld = NULL; |
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348 | static Waypoint_t* GPS_pWaypointOld = NULL; |
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349 | |||
350 | static GPS_Pos_t RangedTargetPosition = {0,0,0, INVALID}; // the limited target position, this is derived from the target position with repect to the operating radius |
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351 | static s32 OperatingRadiusOld = -1; |
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352 | static u8 WPArrived = FALSE; |
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353 | static u32 WPTime = 0; |
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354 | |||
355 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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356 | //+ Check for new data from GPS-receiver |
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357 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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358 | switch(GPSData.Status) |
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359 | { |
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360 | case INVALID: // no gps data available |
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361 | // do nothing |
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362 | break; |
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363 | |||
364 | case PROCESSED: // the current data have been allready processed |
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365 | // if no new data are available within the timeout switch to invalid state. |
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366 | if(CheckDelay(GPSDataTimeout)) GPSData.Status = INVALID; |
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367 | // wait for new gps data |
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368 | break; |
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369 | |||
370 | case NEWDATA: // handle new gps data |
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371 | |||
372 | // update GPS Parameter from FC-Data via SPI interface |
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373 | GPS_UpdateParameter(); |
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374 | |||
375 | // wait maximum of 3 times the normal data update time before data timemout |
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376 | GPSDataTimeout = SetDelay(3 * GPS_UPDATETIME_MS); |
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377 | beep_rythm++; |
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378 | |||
379 | // debug |
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380 | DebugOut.Analog[21] = (u16)GPSData.Speed_North; |
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381 | DebugOut.Analog[22] = (u16)GPSData.Speed_East; |
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382 | DebugOut.Analog[31] = (u16)GPSData.NumOfSats; |
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383 | |||
384 | // If GPS signal condition is sufficient for a reliable position measurement |
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385 | if(GPS_IsSignalOK()) |
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386 | { |
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387 | // if the MK is starting or the home position is invalid then store the home position |
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388 | if((FC.MKFlags & MKFLAG_START) || (GPS_HomePosition.Status == INVALID)) |
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389 | { // try to update the home position from the current position |
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390 | if(GPS_CopyPosition(&(GPSData.Position), &GPS_HomePosition)) |
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391 | { |
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392 | BeepTime = 700; // beep on success |
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393 | GPS_CopyPosition(&GPS_HomePosition, &(NaviData.HomePosition)); |
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394 | } |
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395 | GPS_pWaypoint = WPList_Begin(); // go to start of waypoint list, return NULL of the list is empty |
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396 | } |
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397 | |||
398 | /* The selected flight mode influences the target position pointer and therefore the behavior */ |
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399 | |||
400 | // check for current flight mode and set the target pointer GPS_pTargetPosition respectively |
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401 | switch(GPS_Parameter.FlightMode) |
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402 | { |
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403 | // the GPS control is deactived |
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404 | case GPS_FLIGHT_MODE_FREE: |
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405 | NaviData.NCFlags &= ~(NC_FLAG_PH | NC_FLAG_CH); |
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406 | NaviData.NCFlags |= NC_FLAG_FREE; |
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407 | |||
408 | // update hold position |
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409 | GPS_CopyPosition(&(GPSData.Position), &GPS_HoldPosition); |
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410 | // no target position |
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411 | GPS_pTargetPosition = NULL; |
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412 | break; |
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413 | |||
414 | // the GPS supports the position hold, if the pilot takes no action |
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415 | case GPS_FLIGHT_MODE_AID: |
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416 | NaviData.NCFlags &= ~(NC_FLAG_FREE | NC_FLAG_CH); |
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417 | NaviData.NCFlags |= NC_FLAG_PH; |
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418 | // reset WPList to begin |
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419 | GPS_pWaypoint = WPList_Begin(); |
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420 | |||
421 | if(GPS_IsManuallyControlled()) |
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422 | { |
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423 | GPS_CopyPosition(&(GPSData.Position), &GPS_HoldPosition); |
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424 | GPS_pTargetPosition = NULL; |
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425 | } |
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426 | else |
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427 | { |
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428 | GPS_pTargetPosition = &GPS_HoldPosition; |
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429 | } |
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430 | break; |
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431 | |||
432 | // the GPS control is directed to a target position |
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433 | // given by a waypoint or by the home position |
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434 | case GPS_FLIGHT_MODE_WAYPOINT: |
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435 | NaviData.NCFlags &= ~(NC_FLAG_FREE | NC_FLAG_PH); |
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436 | NaviData.NCFlags |= NC_FLAG_CH; |
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437 | |||
438 | // waypoint trigger logic |
||
439 | if(GPS_pWaypoint != NULL) // waypoint exist |
||
440 | { |
||
441 | if(GPS_pWaypoint->Position.Status == INVALID) // should never happen |
||
442 | { |
||
443 | GPS_pWaypoint = WPList_Next(); // goto to next WP |
||
444 | WPArrived = FALSE; |
||
445 | BeepTime = 255; |
||
446 | } |
||
447 | else // waypoint position is valid |
||
448 | { |
||
449 | // check if the pointer to the waypoint has been changed or the data have been updated |
||
450 | if((GPS_pWaypoint != GPS_pWaypointOld) || (GPS_pWaypoint->Position.Status == NEWDATA)) |
||
451 | { |
||
452 | GPS_pWaypointOld = GPS_pWaypoint; |
||
453 | // reset the arrived bit to break a pending HoldTime of the old WP |
||
454 | WPArrived = FALSE; |
||
455 | } |
||
456 | |||
457 | if(TargetDeviation.Status != INVALID) |
||
458 | { // if the waypoint was not catched and the target area has been reached |
||
459 | if(!WPArrived && (TargetDeviation.Distance < (GPS_pWaypoint->ToleranceRadius * 100))) |
||
460 | { |
||
461 | WPArrived = TRUE; |
||
462 | WPTime = SetDelay(GPS_pWaypoint->HoldTime * 1000); // set hold time stamp |
||
463 | } |
||
464 | } |
||
465 | // if WP has been reached once, wait hold time before trigger to next one |
||
466 | if(WPArrived) |
||
467 | { |
||
468 | /* ToDo: Adjust GPS_pWaypoint->Heading, GPS_pWaypoint->Event handling */ |
||
469 | if(CheckDelay(WPTime)) |
||
470 | { |
||
471 | GPS_pWaypoint = WPList_Next(); // goto to next waypoint, return NULL if end of list has been reached |
||
472 | WPArrived = FALSE; // which is not arrived |
||
473 | } |
||
474 | } // EOF if(WPArrived) |
||
475 | } |
||
476 | } // EOF waypoint trigger logic |
||
477 | |||
478 | if(GPS_pWaypoint != NULL) // Waypoint exist |
||
479 | { |
||
480 | // update the hold position |
||
481 | GPS_CopyPosition(&(GPSData.Position), &GPS_HoldPosition); |
||
482 | GPS_pTargetPosition = &(GPS_pWaypoint->Position); |
||
483 | } |
||
484 | else // no waypoint info available, i.e. the WPList is empty or the end of the list has been reached |
||
485 | { |
||
486 | // fly back to home postion |
||
487 | if(GPS_HomePosition.Status == INVALID) |
||
488 | { |
||
489 | GPS_pTargetPosition = &GPS_HoldPosition; // fall back to hold mode if home position is not available |
||
490 | BeepTime = 255; // beep to indicate missin home position |
||
491 | } |
||
492 | else // the home position is valid |
||
493 | { |
||
494 | // update the hold position |
||
495 | GPS_CopyPosition(&(GPSData.Position), &GPS_HoldPosition); |
||
496 | // set target to home position |
||
497 | GPS_pTargetPosition = &GPS_HomePosition; |
||
498 | } |
||
499 | } |
||
500 | break; |
||
501 | |||
502 | case GPS_FLIGHT_MODE_UNDEF: |
||
503 | default: |
||
504 | // update hold position |
||
505 | GPS_CopyPosition(&(GPSData.Position), &GPS_HoldPosition); |
||
506 | // no target position |
||
507 | GPS_pTargetPosition = NULL; |
||
508 | break; |
||
509 | |||
510 | }// EOF GPS Mode Handling |
||
511 | |||
512 | |||
513 | /* Calculation of range target based on the real target */ |
||
514 | |||
515 | // if no target position exist clear the ranged target position |
||
516 | if(GPS_pTargetPosition == NULL) GPS_ClearPosition(&RangedTargetPosition); |
||
517 | else |
||
518 | { // if the target position has been changed or the value has been updated or the OperatingRadius has changed |
||
519 | if((GPS_pTargetPosition != pTargetPositionOld) || (GPS_pTargetPosition->Status == NEWDATA) || (GPS_Parameter.OperatingRadius != OperatingRadiusOld) ) |
||
520 | { |
||
521 | // calculate deviation of new target position from home position |
||
522 | if(GPS_CalculateDeviation(GPS_pTargetPosition, &GPS_HomePosition)) |
||
523 | { |
||
524 | // check distance from home position |
||
525 | if(TargetDeviation.Distance > GPS_Parameter.OperatingRadius) |
||
526 | { |
||
527 | //calculate ranged target position to be within the operation radius area |
||
528 | NaviData.NCFlags |= NC_FLAG_RANGE_LIMIT; |
||
529 | TargetDeviation.Distance = GPS_Parameter.OperatingRadius; |
||
530 | GPS_LimitXY(&(TargetDeviation.East), &(TargetDeviation.North), TargetDeviation.Distance); |
||
531 | |||
532 | RangedTargetPosition.Status = INVALID; |
||
533 | RangedTargetPosition.Latitude = GPS_HomePosition.Latitude; |
||
534 | RangedTargetPosition.Latitude += (s32)((float)TargetDeviation.North / 1.11194927f); |
||
535 | RangedTargetPosition.Longitude = GPS_HomePosition.Longitude; |
||
536 | RangedTargetPosition.Longitude += (s32)((float)TargetDeviation.East / (1.11194927f * cos(RadiansFromGPS(GPS_HomePosition.Latitude))) ); |
||
537 | RangedTargetPosition.Altitude = GPS_pTargetPosition->Altitude; |
||
538 | RangedTargetPosition.Status = NEWDATA; |
||
539 | } |
||
540 | else |
||
541 | { // the target is located within the operation radius area |
||
542 | // simple copy the loaction to the ranged target position |
||
543 | GPS_CopyPosition(GPS_pTargetPosition, &RangedTargetPosition); |
||
544 | NaviData.NCFlags &= ~NC_FLAG_RANGE_LIMIT; |
||
545 | } |
||
546 | } |
||
547 | else |
||
548 | { // deviation could not be determined |
||
549 | GPS_ClearPosition(&RangedTargetPosition); |
||
550 | } |
||
551 | GPS_pTargetPosition->Status = PROCESSED; // mark current target as processed! |
||
552 | } |
||
553 | } |
||
554 | OperatingRadiusOld = GPS_Parameter.OperatingRadius; |
||
555 | // remember last target position pointer |
||
556 | pTargetPositionOld = GPS_pTargetPosition; |
||
557 | |||
558 | /* Calculate position deviation from ranged target */ |
||
559 | |||
560 | // calculate deviation of current position to ranged target position in cm |
||
561 | if(GPS_CalculateDeviation(&(GPSData.Position), &RangedTargetPosition)) |
||
562 | { |
||
563 | // implement your control code here based |
||
564 | // in the info available in the TargetDeviation, GPSData and FromFlightCtrl.GyroHeading |
||
565 | GPS_Stick.Nick = 0; |
||
566 | GPS_Stick.Roll = 0; |
||
567 | GPS_Stick.Yaw = 0; |
||
568 | } |
||
569 | else // deviation could not be calculated |
||
570 | { // do nothing on gps sticks! |
||
571 | GPS_Neutral(); |
||
572 | } |
||
573 | |||
574 | }// eof if GPSSignal is OK |
||
575 | else // GPSSignal not OK |
||
576 | { |
||
577 | GPS_Neutral(); |
||
578 | // beep if signal is not sufficient |
||
579 | if(GPS_Parameter.FlightMode != GPS_FLIGHT_MODE_FREE) |
||
580 | { |
||
581 | if(!(GPSData.Flags & FLAG_GPSFIXOK) && !(beep_rythm % 5)) BeepTime = 100; |
||
582 | else if (GPSData.NumOfSats < GPS_Parameter.MinSat && !(beep_rythm % 5)) BeepTime = 10; |
||
583 | } |
||
584 | } |
||
585 | GPSData.Status = PROCESSED; // mark as processed |
||
586 | break; |
||
1 | ingob | 587 | } |
41 | ingob | 588 | |
589 | DebugOut.Analog[27] = (s16)TargetDeviation.North; |
||
590 | DebugOut.Analog[28] = (s16)TargetDeviation.East; |
||
591 | DebugOut.Analog[29] = GPS_Stick.Nick; |
||
592 | DebugOut.Analog[30] = GPS_Stick.Roll; |
||
593 | |||
594 | // update navi data, send back to ground station |
||
595 | GPS_CopyPosition(&(GPSData.Position), &(NaviData.CurrentPosition)); |
||
596 | GPS_CopyPosition(&RangedTargetPosition, &(NaviData.TargetPosition)); |
||
597 | NaviData.SatsInUse = GPSData.NumOfSats; |
||
598 | NaviData.TargetPositionDeviation.Distance = TargetDeviation.Distance; |
||
599 | NaviData.TargetPositionDeviation.Bearing = TargetDeviation.Bearing; |
||
600 | NaviData.UBat = FC.UBat; |
||
601 | NaviData.GroundSpeed = (u16)GPSData.Speed_Ground; |
||
602 | NaviData.Heading = (s16)GPSData.Heading; |
||
603 | NaviData.CompassHeading = (s16)FromFlightCtrl.GyroHeading; |
||
604 | NaviData.AngleNick = FromFlightCtrl.IntegralNick / 10; |
||
605 | NaviData.AngleRoll = FromFlightCtrl.IntegralRoll / 10; |
||
606 | NaviData.RC_Quality = (u8) FC.RC_Quality; |
||
607 | NaviData.MKFlags = (u8)FC.MKFlags; |
||
608 | |||
609 | //+++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
610 | return; |
||
1 | ingob | 611 | } |
612 |