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1612 | dongfang | 1 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
2 | // + Copyright (c) 04.2007 Holger Buss |
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3 | // + Nur für den privaten Gebrauch |
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4 | // + www.MikroKopter.com |
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5 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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6 | // + Es gilt für das gesamte Projekt (Hardware, Software, Binärfiles, Sourcecode und Dokumentation), |
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7 | // + dass eine Nutzung (auch auszugsweise) nur für den privaten (nicht-kommerziellen) Gebrauch zulässig ist. |
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8 | // + Sollten direkte oder indirekte kommerzielle Absichten verfolgt werden, ist mit uns (info@mikrokopter.de) Kontakt |
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9 | // + bzgl. der Nutzungsbedingungen aufzunehmen. |
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10 | // + Eine kommerzielle Nutzung ist z.B.Verkauf von MikroKoptern, Bestückung und Verkauf von Platinen oder Bausätzen, |
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11 | // + Verkauf von Luftbildaufnahmen, usw. |
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12 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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13 | // + Werden Teile des Quellcodes (mit oder ohne Modifikation) weiterverwendet oder veröffentlicht, |
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14 | // + unterliegen sie auch diesen Nutzungsbedingungen und diese Nutzungsbedingungen incl. Copyright müssen dann beiliegen |
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15 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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16 | // + Sollte die Software (auch auszugesweise) oder sonstige Informationen des MikroKopter-Projekts |
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17 | // + auf anderen Webseiten oder sonstigen Medien veröffentlicht werden, muss unsere Webseite "http://www.mikrokopter.de" |
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18 | // + eindeutig als Ursprung verlinkt werden |
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19 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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20 | // + Keine Gewähr auf Fehlerfreiheit, Vollständigkeit oder Funktion |
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21 | // + Benutzung auf eigene Gefahr |
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22 | // + Wir übernehmen keinerlei Haftung für direkte oder indirekte Personen- oder Sachschäden |
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23 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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24 | // + Die Portierung der Software (oder Teile davon) auf andere Systeme (ausser der Hardware von www.mikrokopter.de) ist nur |
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25 | // + mit unserer Zustimmung zulässig |
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26 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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27 | // + Die Funktion printf_P() unterliegt ihrer eigenen Lizenz und ist hiervon nicht betroffen |
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28 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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29 | // + Redistributions of source code (with or without modifications) must retain the above copyright notice, |
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30 | // + this list of conditions and the following disclaimer. |
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31 | // + * 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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32 | // + from this software without specific prior written permission. |
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33 | // + * The use of this project (hardware, software, binary files, sources and documentation) is only permittet |
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34 | // + for non-commercial use (directly or indirectly) |
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35 | // + Commercial use (for excample: selling of MikroKopters, selling of PCBs, assembly, ...) is only permitted |
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36 | // + with our written permission |
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37 | // + * If sources or documentations are redistributet on other webpages, out webpage (http://www.MikroKopter.de) must be |
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38 | // + clearly linked as origin |
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39 | // + * porting to systems other than hardware from www.mikrokopter.de is not allowed |
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40 | // + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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41 | // + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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42 | // + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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43 | // + ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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44 | // + LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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45 | // + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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46 | // + SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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47 | // + INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN// + CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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48 | // + ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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49 | // + POSSIBILITY OF SUCH DAMAGE. |
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50 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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51 | |||
52 | #include <stdlib.h> |
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53 | #include <avr/io.h> |
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54 | #include "eeprom.h" |
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55 | #include "flight.h" |
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56 | |||
57 | // Only for debug. Remove. |
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58 | #include "analog.h" |
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59 | |||
60 | // Necessary for external control and motor test |
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61 | #include "uart0.h" |
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62 | #include "twimaster.h" |
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63 | #include "attitude.h" |
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64 | #include "controlMixer.h" |
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65 | #ifdef USE_MK3MAG |
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66 | #include "gps.h" |
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67 | #endif |
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68 | |||
69 | #define CHECK_MIN_MAX(value, min, max) {if(value < min) value = min; else if(value > max) value = max;} |
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70 | |||
71 | // TODO: These are no longer maintained, just left at 0. The original implementation just summed the acc. |
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72 | // value to them every 2 ms. No filtering or anything. Just a case for an eventual overflow?? Hey??? |
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73 | int16_t naviAccPitch = 0, naviAccRoll = 0, naviCntAcc = 0; |
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74 | |||
75 | // MK flags |
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76 | uint16_t isFlying = 0; |
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77 | volatile uint8_t MKFlags = 0; |
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78 | |||
79 | uint8_t gyroPFactor, gyroIFactor; // the PD factors for the attitude control |
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80 | uint8_t yawRatePFactor, yawRateIFactor; // the PD factors for the yaw control |
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81 | |||
82 | // Some integral weight constant... |
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83 | uint16_t Ki = 10300 / 33; |
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84 | |||
85 | uint8_t RequiredMotors = 0; |
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86 | |||
87 | // No support for altitude control right |
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88 | // int16_t SetPointHeight = 0; |
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89 | |||
90 | /************************************************************************/ |
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91 | /* Filter for motor value smoothing (necessary???) */ |
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92 | /************************************************************************/ |
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93 | int16_t motorFilter(int16_t newvalue, int16_t oldvalue) { |
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94 | switch(dynamicParams.UserParams[5]) { |
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95 | case 0: |
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96 | return newvalue; |
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97 | case 1: |
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98 | return (oldvalue + newvalue) / 2; |
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99 | case 2: |
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100 | if(newvalue > oldvalue) |
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101 | return (1 * (int16_t)oldvalue + newvalue) / 2; //mean of old and new |
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102 | else |
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103 | return newvalue - (oldvalue - newvalue) * 1; // 2 * new - old |
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104 | case 3: |
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105 | if(newvalue < oldvalue) |
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106 | return (1 * (int16_t)oldvalue + newvalue) / 2; //mean of old and new |
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107 | else |
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108 | return newvalue - (oldvalue - newvalue) * 1; // 2 * new - old |
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109 | default: return newvalue; |
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110 | } |
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111 | } |
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112 | |||
113 | /************************************************************************/ |
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114 | /* Neutral Readings */ |
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115 | /************************************************************************/ |
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116 | void flight_setNeutral() { |
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117 | // GPSStickPitch = 0; |
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118 | // GPSStickRoll = 0; |
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119 | |||
120 | MKFlags |= MKFLAG_CALIBRATE; |
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121 | |||
122 | // not really used here any more. |
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123 | dynamicParams.KalmanK = -1; |
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124 | dynamicParams.KalmanMaxDrift = 0; |
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125 | dynamicParams.KalmanMaxFusion = 32; |
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126 | |||
127 | controlMixer_initVariables(); |
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128 | |||
129 | // TODO: Move off. |
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130 | // RC_Quality = 100; |
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131 | } |
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132 | |||
133 | /************************************************************************/ |
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134 | /* Transmit Motor Data via I2C */ |
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135 | /************************************************************************/ |
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136 | void sendMotorData(void) { |
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137 | uint8_t i; |
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138 | if(!(MKFlags & MKFLAG_MOTOR_RUN)) { |
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139 | // If pilot has not started the engines.... |
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140 | MKFlags &= ~(MKFLAG_FLY | MKFLAG_START); // clear flag FLY and START if motors are off |
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141 | for(i = 0; i < MAX_MOTORS; i++) { |
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142 | // and if we are not in motor test mode, cut throttle on all motors. |
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143 | if(!motorTestActive) Motor[i].SetPoint = 0; |
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144 | else Motor[i].SetPoint = motorTest[i]; |
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145 | } |
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146 | if(motorTestActive) motorTestActive--; |
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147 | } |
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148 | |||
149 | DebugOut.Analog[12] = Motor[0].SetPoint; // Front |
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150 | DebugOut.Analog[13] = Motor[1].SetPoint; // Rear |
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151 | DebugOut.Analog[14] = Motor[3].SetPoint; // Left |
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152 | DebugOut.Analog[15] = Motor[2].SetPoint; // Right |
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153 | // Start I2C Interrupt Mode |
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154 | I2C_Start(TWI_STATE_MOTOR_TX); |
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155 | } |
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156 | |||
157 | void setFlightParameters(uint8_t _Ki, uint8_t _gyroPFactor, uint8_t _gyroIFactor, uint8_t _yawPFactor, uint8_t _yawIFactor) { |
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158 | Ki = 10300 / _Ki; |
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159 | gyroPFactor = _gyroPFactor; |
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160 | gyroIFactor = _gyroIFactor; |
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161 | yawRatePFactor = _yawPFactor; |
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162 | yawRateIFactor = _yawIFactor; |
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163 | } |
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164 | |||
165 | void setNormalFlightParameters(void) { |
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166 | if(staticParams.GlobalConfig & CFG_HEADING_HOLD) gyroIFactor = 0; |
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167 | else gyroIFactor = dynamicParams.GyroI; |
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168 | |||
169 | setFlightParameters(dynamicParams.IFactor + 1, |
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170 | dynamicParams.GyroP + 10, |
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171 | staticParams.GlobalConfig & CFG_HEADING_HOLD ? dynamicParams.GyroI : 0, |
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172 | dynamicParams.GyroP + 10, |
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173 | dynamicParams.UserParams[6] |
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174 | ); |
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175 | } |
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176 | |||
177 | void setStableFlightParameters(void) { |
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178 | setFlightParameters(33, 90, 120, 90, 120); |
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179 | } |
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180 | |||
181 | void handleCommands(uint8_t command, uint8_t isCommandRepeated) { |
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182 | if(!(MKFlags & MKFLAG_MOTOR_RUN)) { |
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183 | if (command == COMMAND_GYROCAL && !isCommandRepeated) { |
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184 | // Run gyro calibration but do not repeat it. |
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185 | GRN_OFF; |
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186 | |||
187 | // TODO: out of here. Anyway, MKFLAG_MOTOR_RUN is cleared. Not enough? |
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188 | // isFlying = 0; |
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189 | // check roll/pitch stick position |
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190 | // if pitch stick is top or roll stick is left or right --> change parameter setting |
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191 | // according to roll/pitch stick position |
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192 | |||
193 | uint8_t setting = controlMixer_getArgument(); |
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194 | |||
195 | if ((setting > 0 && setting < 6) || setting == 9) { |
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196 | // Gyro calinbration, with or without selecting a new parameter-set. |
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197 | if(setting > 0 && setting < 6) { |
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198 | // A valid parameter-set (1..5) was chosen - use it. |
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199 | setActiveParamSet(setting); |
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200 | } |
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201 | ParamSet_ReadFromEEProm(getActiveParamSet()); |
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202 | attitude_setNeutral(); |
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203 | flight_setNeutral(); |
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204 | // Right stick is centered; calibrate it to zero (hmm strictly does not belong here). |
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205 | controlMixer_setNeutral(setting == 9); // Calibrate right stick neutral position. |
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206 | beepNumber(getActiveParamSet()); |
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207 | } else if(staticParams.GlobalConfig & (CFG_COMPASS_ACTIVE | CFG_GPS_ACTIVE) && setting == 7) { |
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208 | // If right stick is centered and down |
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209 | compassCalState = 1; |
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210 | beep(1000); |
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211 | } |
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212 | } |
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213 | |||
214 | // save the ACC neutral setting to eeprom |
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215 | else { |
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216 | if(command == COMMAND_ACCCAL && !isCommandRepeated) { |
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217 | // Run gyro and acc. meter calibration but do not repeat it. |
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218 | GRN_OFF; |
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219 | analog_calibrateAcc(); |
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220 | attitude_setNeutral(); |
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221 | flight_setNeutral(); |
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222 | controlMixer_setNeutral(1); // Calibrate right stick neutral position. |
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223 | beepNumber(getActiveParamSet()); |
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224 | } |
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225 | } |
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226 | } // end !MOTOR_RUN condition. |
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227 | if (command == COMMAND_START) { |
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228 | isFlying = 1; // TODO: Really???? |
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229 | // if (!controlMixer_isCommandRepeated()) { |
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230 | // attitude_startDynamicCalibration(); // Try sense the effect of the motors on sensors. |
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231 | MKFlags |= (MKFLAG_MOTOR_RUN | MKFLAG_START); // set flag RUN and START. TODO: Is that START flag used at all??? |
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232 | // } else { // Pilot is holding stick, ever after motor start. Continue to sense the effect of the motors on sensors. |
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233 | // attitude_continueDynamicCalibration(); |
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234 | // setPointYaw = 0; |
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235 | // IPartPitch = 0; |
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236 | // IPartRoll = 0; |
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237 | // } |
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238 | } else if (command == COMMAND_STOP) { |
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239 | isFlying = 0; |
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240 | MKFlags &= ~(MKFLAG_MOTOR_RUN); |
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241 | } |
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242 | } |
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243 | |||
244 | /************************************************************************/ |
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245 | /* Main Flight Control */ |
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246 | /************************************************************************/ |
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247 | void flight_control(void) { |
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248 | int16_t tmp_int; |
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249 | // Mixer Fractions that are combined for Motor Control |
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250 | int16_t yawTerm, throttleTerm, pitchTerm, rollTerm; |
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251 | |||
252 | // PID controller variables |
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253 | int16_t PDPartPitch, PDPartRoll, PDPartYaw, PPartPitch, PPartRoll; |
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254 | static int32_t IPartPitch = 0, IPartRoll = 0; |
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255 | |||
256 | static int32_t setPointYaw = 0; |
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257 | |||
258 | // Removed. Too complicated, and apparently not necessary with MEMS gyros anyway. |
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259 | // static int32_t IntegralGyroPitchError = 0, IntegralGyroRollError = 0; |
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260 | // static int32_t CorrectionPitch, CorrectionRoll; |
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261 | |||
262 | static uint16_t emergencyFlightTime; |
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263 | |||
264 | // No support for altitude control right now. |
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265 | // static uint8_t HeightControlActive = 0; |
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266 | // static int16_t HeightControlGas = 0; |
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267 | |||
268 | static int8_t debugDataTimer = 0; |
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269 | |||
270 | // High resolution motor values for smoothing of PID motor outputs |
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271 | static int16_t motorFilters[MAX_MOTORS]; |
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272 | |||
273 | uint8_t i; |
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274 | |||
275 | // Fire the main flight attitude calculation, including integration of angles. |
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276 | calculateFlightAttitude(); |
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277 | GRN_ON; |
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278 | |||
279 | /* |
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280 | * TODO: update should: Set the stick variables if good signal, set them to zero if bad. |
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281 | * Set variables also. |
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282 | */ |
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283 | controlMixer_update(); |
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284 | |||
285 | throttleTerm = controlThrottle; |
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286 | if(throttleTerm < staticParams.GasMin + 10) throttleTerm = staticParams.GasMin + 10; |
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287 | |||
288 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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289 | // RC-signal is bad |
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290 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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291 | if(controlMixer_getSignalQuality() <= SIGNAL_BAD) { // the rc-frame signal is not reveived or noisy |
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292 | RED_ON; |
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293 | beepRCAlarm(); |
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294 | |||
295 | if(emergencyFlightTime) { |
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296 | // continue emergency flight |
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297 | emergencyFlightTime--; |
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298 | if(isFlying > 1000) { |
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299 | // We're probably still flying. Descend slowly. |
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300 | throttleTerm = staticParams.EmergencyGas; // Set emergency throttle |
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301 | MKFlags |= (MKFLAG_EMERGENCY_LANDING); // Set flag for emergency landing |
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302 | setStableFlightParameters(); |
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303 | } else { |
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304 | MKFlags &= ~(MKFLAG_MOTOR_RUN); // Probably not flying, and bad R/C signal. Kill motors. |
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305 | } |
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306 | } else { |
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307 | // end emergency flight (just cut the motors???) |
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308 | MKFlags &= ~(MKFLAG_MOTOR_RUN | MKFLAG_EMERGENCY_LANDING); |
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309 | } |
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310 | } else { |
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311 | // signal is acceptable |
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312 | if(controlMixer_getSignalQuality() > SIGNAL_BAD) { |
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313 | // Reset emergency landing control variables. |
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314 | MKFlags &= ~(MKFLAG_EMERGENCY_LANDING); // clear flag for emergency landing |
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315 | // The time is in whole seconds. |
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316 | emergencyFlightTime = staticParams.EmergencyGasDuration * 488; |
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317 | } |
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318 | |||
319 | // If some throttle is given, and the motor-run flag is on, increase the probability that we are flying. |
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320 | if(throttleTerm > 40 && (MKFlags & MKFLAG_MOTOR_RUN)) { |
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321 | // increment flight-time counter until overflow. |
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322 | if(isFlying != 0xFFFF) isFlying++; |
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323 | } else |
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324 | /* |
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325 | * When standing on the ground, do not apply I controls and zero the yaw stick. |
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326 | * Probably to avoid integration effects that will cause the copter to spin |
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327 | * or flip when taking off. |
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328 | * TODO: What was the value of IPartPitch? At 1st run of this, it's 0 already. |
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329 | */ |
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330 | if(isFlying < 256) { |
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331 | IPartPitch = 0; |
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332 | IPartRoll = 0; |
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333 | // TODO: Don't stomp on other modules' variables!!! |
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334 | controlYaw = 0; |
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335 | if(isFlying == 250) { |
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336 | updateCompassCourse = 1; |
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337 | yawAngle = 0; |
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338 | setPointYaw = 0; |
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339 | } |
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340 | } else { |
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341 | // DebugOut.Digital[1] = 0; |
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342 | // Set fly flag. TODO: Hmmm what can we trust - the isFlying counter or the flag? |
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343 | // Answer: The counter. The flag is not read from anywhere anyway... except the NC maybe. |
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344 | MKFlags |= (MKFLAG_FLY); |
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345 | } |
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346 | |||
347 | /* |
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348 | * Get the current command (start/stop motors, calibrate), if any. |
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349 | */ |
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350 | handleCommands(controlMixer_getCommand(), controlMixer_isCommandRepeated()); |
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351 | |||
352 | // if(controlMixer_getSignalQuality() >= SIGNAL_GOOD) { |
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353 | setNormalFlightParameters(); |
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354 | // } |
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355 | } |
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356 | |||
357 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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358 | // in case of emergency landing |
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359 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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360 | // set all inputs to save values |
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361 | /* |
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362 | * Looping the H&I way basically is just a matter of turning off attitude angle measurement |
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363 | * by integration (because 300 deg/s gyros are too slow) and turning down the throttle. |
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364 | * This is the latter. |
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365 | */ |
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366 | if(looping) { |
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367 | if(throttleTerm > staticParams.LoopGasLimit) throttleTerm = staticParams.LoopGasLimit; |
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368 | } |
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369 | |||
370 | /* |
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371 | * Here is a dynamic calibration experiment: Adjust integrals and gyro offsets if the pilot appears to be always |
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372 | * pushing of pulling on the pitch or roll stick. |
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373 | */ |
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374 | /* |
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375 | if(ADCycleCount >= dynamicParams.UserParam2 * 10) { |
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376 | // This algo works OK on the desk but it is a little sluggish and it oscillates. |
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377 | // It does not very effectively cancel drift because of dynamics. |
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378 | |||
379 | minStickForAutoCal = dynamicParams.UserParam3 * 10; |
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380 | maxStickForAutoCal = dynamicParams.UserParam4 * 10; |
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381 | |||
382 | // If not already corrected to the limit, and dynamic calibration is enabled: |
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383 | if (abs(dynamicOffsetPitch - savedDynamicOffsetPitch) < dynamicParams.UserParam1 && !dynamicParams.UserParam6) { |
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384 | // The pilot pushes on the stick, the integral is > 0, and the gyro val is > 0. Looks like a value-too-high case, so increase the offset. |
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385 | if (filteredHiResPitchGyro > dynamicOffsetPitch && pitchAngle > 0 && maxStickPitch >= minStickForAutoCal && maxStickPitch <= maxStickForAutoCal) { |
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386 | dynamicOffsetPitch += (int8_t)(dynamicParams.UserParam7 - 128); // (adding something seems right...) |
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387 | pitchAngle = (pitchAngle * (int32_t)dynamicParams.UserParam5) / 100L; |
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388 | } else if (filteredHiResPitchGyro < dynamicOffsetPitch && pitchAngle < 0 && maxStickPitch <= -minStickForAutoCal && maxStickPitch >= -maxStickForAutoCal) { |
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389 | dynamicOffsetPitch -= (int8_t)(dynamicParams.UserParam7 - 128); // (subtracting something seems right...) |
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390 | pitchAngle = (pitchAngle * (int32_t)dynamicParams.UserParam5) / 100L; |
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391 | } |
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392 | } |
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393 | |||
394 | // If not already corrected to the limit, and dynamic calibration is enabled: |
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395 | if (abs(dynamicOffsetRoll - savedDynamicOffsetRoll) <= dynamicParams.UserParam1 && !dynamicParams.UserParam6) { |
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396 | if (filteredHiResRollGyro > dynamicOffsetRoll && rollAngle > 0 && maxStickRoll >= minStickForAutoCal && maxStickRoll <= maxStickForAutoCal) { |
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397 | dynamicOffsetRoll += (int8_t)(dynamicParams.UserParam8 - 128); |
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398 | rollAngle = (rollAngle * (int32_t)dynamicParams.UserParam5) / 100L; |
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399 | } else if (filteredHiResRollGyro < dynamicOffsetRoll && rollAngle < 0 && maxStickRoll <= -minStickForAutoCal && maxStickRoll >= -maxStickForAutoCal) { |
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400 | dynamicOffsetRoll -= (int8_t)(dynamicParams.UserParam8 - 128); |
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401 | rollAngle = (rollAngle * (int32_t)dynamicParams.UserParam5) / 100L; |
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402 | } |
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403 | } |
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404 | ADCycleCount = 0; |
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405 | } |
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406 | */ |
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407 | |||
408 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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409 | // Yawing |
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410 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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411 | if(abs(controlYaw) > 4 * staticParams.StickYawP) { // yaw stick is activated |
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412 | badCompassHeading = 1000; |
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413 | if(!(staticParams.GlobalConfig & CFG_COMPASS_FIX)) { |
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414 | updateCompassCourse = 1; |
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415 | } |
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416 | } |
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417 | |||
418 | setPointYaw = controlYaw; |
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419 | |||
420 | // trimm drift of ReadingIntegralGyroYaw with SetPointYaw(StickYaw) |
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421 | // TODO: We want NO feedback of control related stuff to the attitude related stuff. |
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422 | yawAngle -= tmp_int; |
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423 | |||
424 | // limit the effect |
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425 | CHECK_MIN_MAX(yawAngle, -50000, 50000) |
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426 | |||
427 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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428 | // Compass |
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429 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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430 | // compass code is used if Compass option is selected |
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431 | |||
432 | /* |
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433 | if(staticParams.GlobalConfig & (CFG_COMPASS_ACTIVE|CFG_GPS_ACTIVE)) { |
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434 | updateCompass(); |
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435 | } |
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436 | */ |
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437 | |||
438 | #if defined (USE_MK3MAG) |
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439 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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440 | // GPS |
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441 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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442 | if(staticParams.GlobalConfig & CFG_GPS_ACTIVE) { |
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443 | GPS_Main(); |
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444 | MKFlags &= ~(MKFLAG_CALIBRATE | MKFLAG_START); |
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445 | } |
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446 | else { |
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447 | // GPSStickPitch = 0; |
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448 | // GPSStickRoll = 0; |
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449 | } |
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450 | #endif |
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451 | |||
452 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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453 | // calculate control feedback from angle (gyro integral) and agular velocity (gyro signal) |
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454 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
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455 | // The P-part is actually the I-part... |
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456 | if(looping & LOOPING_PITCH_AXIS) { |
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457 | PPartPitch = 0; |
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458 | } else { |
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459 | // TODO: Where do the 44000 come from??? |
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460 | PPartPitch = (pitchAngle * gyroIFactor) / (44000 / STICK_GAIN); // P-Part - Proportional to Integral |
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461 | // PPartPitch = IntegralNickMalFaktor in H&I code. |
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462 | } |
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463 | |||
464 | // Now blend in the P-part - proportional to the Differential of the integral = the gyro value. |
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465 | PDPartPitch = PPartPitch + (int32_t)((int32_t)pitchRate_PID * gyroPFactor) / (256L / STICK_GAIN) |
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466 | + (pitchDifferential * dynamicParams.GyroD) / 16; |
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467 | // = MesswertNick in H&I code |
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468 | |||
469 | // The P-part is actually the I-part... |
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470 | if(looping & LOOPING_ROLL_AXIS) { |
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471 | PPartRoll = 0; |
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472 | } else { |
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473 | PPartRoll = (rollAngle * gyroIFactor) / (44000 / STICK_GAIN); // P-Part - Proportional to Integral |
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474 | } |
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475 | |||
476 | // Now blend in the P-part - proportional to the Differential of the integral = the gyro value. |
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477 | PDPartRoll = PPartRoll + (int32_t)((int32_t)rollRate_PID * gyroPFactor) / (256L / STICK_GAIN) |
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478 | + (rollDifferential * dynamicParams.GyroD) / 16; |
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479 | |||
480 | PDPartYaw = (int32_t)(yawRate * 2 * (int32_t)yawRatePFactor) / (256L / STICK_GAIN) + (int32_t)(yawAngle * yawRateIFactor) / (2 * (44000 / STICK_GAIN)); |
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481 | |||
482 | // limit control feedback |
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483 | #define SENSOR_LIMIT (4096 * 4) |
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484 | CHECK_MIN_MAX(PDPartPitch, -SENSOR_LIMIT, SENSOR_LIMIT); |
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485 | CHECK_MIN_MAX(PDPartRoll, -SENSOR_LIMIT, SENSOR_LIMIT); |
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486 | CHECK_MIN_MAX(PDPartYaw, -SENSOR_LIMIT, SENSOR_LIMIT); |
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487 | |||
488 | /* |
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489 | * Compose throttle term. |
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490 | * If a Bl-Ctrl is missing, prevent takeoff. |
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491 | */ |
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492 | if(missingMotor) { |
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493 | // if we are in the lift off condition. Hmmmmmm when is throttleTerm == 0 anyway??? |
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494 | if((isFlying > 1) && (isFlying < 50) && (throttleTerm > 0)) |
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495 | isFlying = 1; // keep within lift off condition |
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496 | throttleTerm = staticParams.GasMin; // reduce gas to min to avoid lift of |
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497 | } |
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498 | |||
499 | /* |
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500 | * Height control was here. |
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501 | */ |
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502 | |||
503 | if(throttleTerm > staticParams.GasMax - 20) throttleTerm = (staticParams.GasMax - 20); |
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504 | throttleTerm *= STICK_GAIN; |
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505 | |||
506 | /* |
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507 | * Compose yaw term. |
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508 | */ |
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509 | #define MIN_YAWGAS (40 * STICK_GAIN) // yaw also below this gas value |
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510 | yawTerm = PDPartYaw - setPointYaw * STICK_GAIN; // yaw controller |
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511 | // limit yawTerm |
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512 | if(throttleTerm > MIN_YAWGAS) { |
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513 | CHECK_MIN_MAX(yawTerm, - (throttleTerm / 2), (throttleTerm / 2)); |
||
514 | } else { |
||
515 | CHECK_MIN_MAX(yawTerm, - (MIN_YAWGAS / 2), (MIN_YAWGAS / 2)); |
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516 | } |
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517 | |||
518 | tmp_int = staticParams.GasMax * STICK_GAIN; |
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519 | CHECK_MIN_MAX(yawTerm, -(tmp_int - throttleTerm), (tmp_int - throttleTerm)); |
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520 | |||
521 | /* |
||
522 | * Compose pitch and roll terms. This is finally where the sticks come into play. |
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523 | */ |
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524 | if(gyroIFactor) { |
||
525 | // Integration mode: Integrate (angle - stick) = the difference between angle and stick pos. |
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526 | // That means: Holding the stick a little forward will, at constant flight attitude, cause this to grow (decline??) over time. |
||
527 | // TODO: Find out why this seems to be proportional to stick position - not integrating it at all. |
||
528 | IPartPitch += PPartPitch - controlPitch; // Integrate difference between P part (the angle) and the stick pos. |
||
529 | IPartRoll += PPartRoll - controlRoll; // I-part for attitude control OK |
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530 | } else { |
||
531 | // "HH" mode: Integrate (rate - stick) = the difference between rotation rate and stick pos. |
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532 | IPartPitch += PDPartPitch - controlPitch; // With gyroIFactor == 0, PDPart is really just a D-part. Integrate D-part (the rot. rate) and the stick pos. |
||
533 | IPartRoll += PDPartRoll - controlRoll; // With gyroIFactor == 0, PDPart is really just a D-part. Integrate D-part (the rot. rate) and the stick pos. |
||
534 | } |
||
535 | |||
536 | // TODO: From which planet comes the 16000? |
||
537 | CHECK_MIN_MAX(IPartPitch, -(STICK_GAIN * 16000L), (STICK_GAIN * 16000L)); |
||
538 | |||
539 | // Add (P, D) parts minus stick pos. to the scaled-down I part. |
||
540 | pitchTerm = PDPartPitch - controlPitch + IPartPitch / Ki; // PID-controller for pitch |
||
541 | |||
542 | CHECK_MIN_MAX(IPartRoll, -(STICK_GAIN * 16000L), (STICK_GAIN * 16000L)); |
||
543 | rollTerm = PDPartRoll - controlRoll + IPartRoll / Ki; // PID-controller for roll |
||
544 | |||
545 | /* |
||
546 | * Apply "dynamic stability" - that is: Limit pitch and roll terms to a growing function of throttle and yaw(!). |
||
547 | * The higher the dynamic stability parameter, the wider the bounds. 64 seems to be a kind of unity |
||
548 | * (max. pitch or roll term is the throttle value). |
||
549 | * TODO: Why a growing function of yaw? |
||
550 | */ |
||
551 | tmp_int = (int32_t)((int32_t)dynamicParams.DynamicStability * (int32_t)(throttleTerm + abs(yawTerm) / 2)) / 64; |
||
552 | CHECK_MIN_MAX(pitchTerm, -tmp_int, tmp_int); |
||
553 | CHECK_MIN_MAX(rollTerm, -tmp_int, tmp_int); |
||
554 | |||
555 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
556 | // Universal Mixer |
||
557 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
558 | for(i = 0; i < MAX_MOTORS; i++) { |
||
559 | int16_t tmp; |
||
560 | if(Mixer.Motor[i][MIX_THROTTLE] > 0) { // If a motor has a zero throttle mix, it is not considered. |
||
561 | tmp = ((int32_t)throttleTerm * Mixer.Motor[i][MIX_THROTTLE]) / 64L; |
||
562 | tmp += ((int32_t)pitchTerm * Mixer.Motor[i][MIX_PITCH]) / 64L; |
||
563 | tmp += ((int32_t)rollTerm * Mixer.Motor[i][MIX_ROLL]) / 64L; |
||
564 | tmp += ((int32_t)yawTerm * Mixer.Motor[i][MIX_YAW]) / 64L; |
||
565 | motorFilters[i] = motorFilter(tmp, motorFilters[i]); |
||
566 | tmp = motorFilters[i] / STICK_GAIN; |
||
567 | CHECK_MIN_MAX(tmp, staticParams.GasMin, staticParams.GasMax); |
||
568 | Motor[i].SetPoint = tmp; |
||
569 | } |
||
570 | else Motor[i].SetPoint = 0; |
||
571 | } |
||
572 | |||
573 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
574 | // Debugwerte zuordnen |
||
575 | // +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
||
576 | if(!debugDataTimer--) { |
||
577 | debugDataTimer = 24; // update debug outputs every 25*2ms = 50 ms (20Hz) |
||
578 | DebugOut.Analog[0] = (10 * pitchAngle) / GYRO_DEG_FACTOR_PITCHROLL; // in 0.1 deg |
||
579 | DebugOut.Analog[1] = (10 * rollAngle) / GYRO_DEG_FACTOR_PITCHROLL; // in 0.1 deg |
||
580 | DebugOut.Analog[2] = yawGyroHeading / GYRO_DEG_FACTOR_YAW; |
||
581 | |||
582 | /* |
||
583 | DebugOut.Analog[9] = UBat; |
||
584 | DebugOut.Analog[10] = RC_Quality; |
||
585 | DebugOut.Analog[11] = yawGyroHeading / GYRO_DEG_FACTOR_YAW; |
||
586 | */ |
||
587 | |||
588 | // 12..15 are the 4 first motors. |
||
589 | |||
590 | DebugOut.Analog[16] = pitchAxisAcc; |
||
591 | DebugOut.Analog[17] = rollAxisAcc; |
||
592 | // DebugOut.Analog[18] = ZAxisAcc; |
||
593 | DebugOut.Analog[19] = throttleTerm; |
||
594 | DebugOut.Analog[20] = pitchTerm; |
||
595 | DebugOut.Analog[21] = rollTerm; |
||
596 | DebugOut.Analog[22] = yawTerm; |
||
597 | DebugOut.Analog[23] = PPartPitch; // |
||
598 | DebugOut.Analog[24] = IPartPitch /Ki; // meget meget lille. |
||
599 | DebugOut.Analog[25] = PDPartPitch; // omtrent lig ppart. |
||
600 | |||
601 | DebugOut.Analog[26] = pitchAccNoisePeak; |
||
602 | DebugOut.Analog[27] = rollAccNoisePeak; |
||
603 | |||
604 | DebugOut.Analog[30] = pitchGyroNoisePeak; |
||
605 | DebugOut.Analog[31] = rollGyroNoisePeak; |
||
606 | } |
||
607 | } |