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1 | #include <inttypes.h> |
1 | #include <inttypes.h> |
2 | #include <stdlib.h> |
2 | #include <stdlib.h> |
3 | #include "fc.h" |
3 | #include "fc.h" |
4 | #include "ubx.h" |
4 | #include "ubx.h" |
5 | #include "mymath.h" |
5 | #include "mymath.h" |
6 | #include "timer0.h" |
6 | #include "timer0.h" |
7 | #include "uart.h" |
7 | #include "uart.h" |
8 | #include "rc.h" |
8 | #include "rc.h" |
9 | #include "eeprom.h" |
9 | #include "eeprom.h" |
10 | 10 | ||
11 | typedef enum |
11 | typedef enum |
12 | { |
12 | { |
13 | GPS_FLIGHT_MODE_UNDEF, |
13 | GPS_FLIGHT_MODE_UNDEF, |
14 | GPS_FLIGHT_MODE_FREE, |
14 | GPS_FLIGHT_MODE_FREE, |
15 | GPS_FLIGHT_MODE_AID, |
15 | GPS_FLIGHT_MODE_AID, |
16 | GPS_FLIGHT_MODE_HOME, |
16 | GPS_FLIGHT_MODE_HOME, |
17 | } FlightMode_t; |
17 | } FlightMode_t; |
- | 18 | ||
18 | 19 | #define GPS_POSINTEGRAL_LIMIT 3000 |
|
19 | #define GPS_STICK_LIMIT 500 // limit of gps stick control to avoid critical flight attitudes |
20 | #define GPS_STICK_LIMIT 500 // limit of gps stick control to avoid critical flight attitudes |
- | 21 | #define GPS_I_LIMIT 156 // limit for the position error integral |
|
20 | #define GPS_POSDEV_INTEGRAL_LIMIT 32000 // limit for the position error integral |
22 | #define GPS_D_LIMIT 625 |
21 | #define GPS_P_LIMIT 250 |
23 | #define GPS_P_LIMIT 312 |
22 | 24 | ||
23 | 25 | ||
24 | typedef struct |
26 | typedef struct |
25 | { |
27 | { |
26 | int32_t Longitude; |
28 | int32_t Longitude; |
27 | int32_t Latitude; |
29 | int32_t Latitude; |
28 | int32_t Altitude; |
30 | int32_t Altitude; |
29 | Status_t Status; |
31 | Status_t Status; |
30 | } GPS_Pos_t; |
32 | } GPS_Pos_t; |
31 | 33 | ||
32 | // GPS coordinates for hold position |
34 | // GPS coordinates for hold position |
33 | GPS_Pos_t HoldPosition = {0,0,0,INVALID}; |
35 | GPS_Pos_t HoldPosition = {0,0,0,INVALID}; |
34 | // GPS coordinates for home position |
36 | // GPS coordinates for home position |
35 | GPS_Pos_t HomePosition = {0,0,0,INVALID}; |
37 | GPS_Pos_t HomePosition = {0,0,0,INVALID}; |
36 | // the current flight mode |
38 | // the current flight mode |
37 | FlightMode_t FlightMode = GPS_FLIGHT_MODE_UNDEF; |
39 | FlightMode_t FlightMode = GPS_FLIGHT_MODE_UNDEF; |
38 | 40 | ||
39 | 41 | ||
40 | // --------------------------------------------------------------------------------- |
42 | // --------------------------------------------------------------------------------- |
41 | void GPS_UpdateParameter(void) |
43 | void GPS_UpdateParameter(void) |
42 | { |
44 | { |
43 | static FlightMode_t FlightModeOld = GPS_FLIGHT_MODE_UNDEF; |
45 | static FlightMode_t FlightModeOld = GPS_FLIGHT_MODE_UNDEF; |
44 | 46 | ||
45 | if((RC_Quality < 100) || (MKFlags & MKFLAG_EMERGENCY_LANDING)) |
47 | if((RC_Quality < 100) || (MKFlags & MKFLAG_EMERGENCY_LANDING)) |
46 | { |
48 | { |
47 | FlightMode = GPS_FLIGHT_MODE_FREE; |
49 | FlightMode = GPS_FLIGHT_MODE_FREE; |
48 | } |
50 | } |
49 | else |
51 | else |
50 | { |
52 | { |
51 | if (FCParam.NaviGpsModeControl < 50) FlightMode = GPS_FLIGHT_MODE_AID; |
53 | if (FCParam.NaviGpsModeControl < 50) FlightMode = GPS_FLIGHT_MODE_AID; |
52 | else if(FCParam.NaviGpsModeControl < 180) FlightMode = GPS_FLIGHT_MODE_FREE; |
54 | else if(FCParam.NaviGpsModeControl < 180) FlightMode = GPS_FLIGHT_MODE_FREE; |
53 | else FlightMode = GPS_FLIGHT_MODE_HOME; |
55 | else FlightMode = GPS_FLIGHT_MODE_HOME; |
54 | } |
56 | } |
55 | if (FlightMode != FlightModeOld) |
57 | if (FlightMode != FlightModeOld) |
56 | { |
58 | { |
57 | BeepTime = 100; |
59 | BeepTime = 100; |
58 | } |
60 | } |
59 | FlightModeOld = FlightMode; |
61 | FlightModeOld = FlightMode; |
60 | } |
62 | } |
61 | 63 | ||
62 | 64 | ||
63 | 65 | ||
64 | // --------------------------------------------------------------------------------- |
66 | // --------------------------------------------------------------------------------- |
65 | // This function defines a good GPS signal condition |
67 | // This function defines a good GPS signal condition |
66 | uint8_t GPS_IsSignalOK(void) |
68 | uint8_t GPS_IsSignalOK(void) |
67 | { |
69 | { |
68 | static uint8_t GPSFix = 0; |
70 | static uint8_t GPSFix = 0; |
69 | if( (GPSInfo.status != INVALID) && (GPSInfo.satfix == SATFIX_3D) && (GPSInfo.flags & FLAG_GPSFIXOK) && ((GPSInfo.satnum >= ParamSet.NaviGpsMinSat) || GPSFix)) |
71 | if( (GPSInfo.status != INVALID) && (GPSInfo.satfix == SATFIX_3D) && (GPSInfo.flags & FLAG_GPSFIXOK) && ((GPSInfo.satnum >= ParamSet.NaviGpsMinSat) || GPSFix)) |
70 | { |
72 | { |
71 | GPSFix = 1; |
73 | GPSFix = 1; |
72 | return(1); |
74 | return(1); |
73 | 75 | ||
74 | } |
76 | } |
75 | else return (0); |
77 | else return (0); |
76 | 78 | ||
77 | } |
79 | } |
78 | // --------------------------------------------------------------------------------- |
80 | // --------------------------------------------------------------------------------- |
79 | // rescale xy-vector length to limit |
81 | // rescale xy-vector length to limit |
80 | uint8_t GPS_LimitXY(int32_t *x, int32_t *y, int32_t limit) |
82 | uint8_t GPS_LimitXY(int32_t *x, int32_t *y, int32_t limit) |
81 | { |
83 | { |
82 | uint8_t retval = 0; |
84 | uint8_t retval = 0; |
83 | int32_t len; |
85 | int32_t len; |
84 | len = (int32_t)c_sqrt(*x * *x + *y * *y); |
86 | len = (int32_t)c_sqrt(*x * *x + *y * *y); |
85 | if (len > limit) |
87 | if (len > limit) |
86 | { |
88 | { |
87 | // normalize control vector components to the limit |
89 | // normalize control vector components to the limit |
88 | *x = (*x * limit) / len; |
90 | *x = (*x * limit) / len; |
89 | *y = (*y * limit) / len; |
91 | *y = (*y * limit) / len; |
90 | retval = 1; |
92 | retval = 1; |
91 | } |
93 | } |
92 | return(retval); |
94 | return(retval); |
93 | } |
95 | } |
94 | 96 | ||
95 | // checks nick and roll sticks for manual control |
97 | // checks nick and roll sticks for manual control |
96 | uint8_t GPS_IsManualControlled(void) |
98 | uint8_t GPS_IsManualControlled(void) |
97 | { |
99 | { |
98 | if ( (abs(PPM_in[ParamSet.ChannelAssignment[CH_NICK]]) < ParamSet.NaviStickThreshold) && (abs(PPM_in[ParamSet.ChannelAssignment[CH_ROLL]]) < ParamSet.NaviStickThreshold)) return 0; |
100 | if ( (abs(PPM_in[ParamSet.ChannelAssignment[CH_NICK]]) < ParamSet.NaviStickThreshold) && (abs(PPM_in[ParamSet.ChannelAssignment[CH_ROLL]]) < ParamSet.NaviStickThreshold)) return 0; |
99 | else return 1; |
101 | else return 1; |
100 | } |
102 | } |
101 | 103 | ||
102 | // set given position to current gps position |
104 | // set given position to current gps position |
103 | uint8_t GPS_SetCurrPosition(GPS_Pos_t * pGPSPos) |
105 | uint8_t GPS_SetCurrPosition(GPS_Pos_t * pGPSPos) |
104 | { |
106 | { |
105 | uint8_t retval = 0; |
107 | uint8_t retval = 0; |
106 | if(pGPSPos == NULL) return(retval); // bad pointer |
108 | if(pGPSPos == NULL) return(retval); // bad pointer |
107 | 109 | ||
108 | if(GPS_IsSignalOK()) |
110 | if(GPS_IsSignalOK()) |
109 | { // is GPS signal condition is fine |
111 | { // is GPS signal condition is fine |
110 | pGPSPos->Longitude = GPSInfo.longitude; |
112 | pGPSPos->Longitude = GPSInfo.longitude; |
111 | pGPSPos->Latitude = GPSInfo.latitude; |
113 | pGPSPos->Latitude = GPSInfo.latitude; |
112 | pGPSPos->Altitude = GPSInfo.altitude; |
114 | pGPSPos->Altitude = GPSInfo.altitude; |
113 | pGPSPos->Status = NEWDATA; |
115 | pGPSPos->Status = NEWDATA; |
114 | retval = 1; |
116 | retval = 1; |
115 | } |
117 | } |
116 | else |
118 | else |
117 | { // bad GPS signal condition |
119 | { // bad GPS signal condition |
118 | pGPSPos->Status = INVALID; |
120 | pGPSPos->Status = INVALID; |
119 | retval = 0; |
121 | retval = 0; |
120 | } |
122 | } |
121 | return(retval); |
123 | return(retval); |
122 | } |
124 | } |
123 | 125 | ||
124 | // clear position |
126 | // clear position |
125 | uint8_t GPS_ClearPosition(GPS_Pos_t * pGPSPos) |
127 | uint8_t GPS_ClearPosition(GPS_Pos_t * pGPSPos) |
126 | { |
128 | { |
127 | uint8_t retval = 0; |
129 | uint8_t retval = 0; |
128 | if(pGPSPos == NULL) return(retval); // bad pointer |
130 | if(pGPSPos == NULL) return(retval); // bad pointer |
129 | else |
131 | else |
130 | { |
132 | { |
131 | pGPSPos->Longitude = 0; |
133 | pGPSPos->Longitude = 0; |
132 | pGPSPos->Latitude = 0; |
134 | pGPSPos->Latitude = 0; |
133 | pGPSPos->Altitude = 0; |
135 | pGPSPos->Altitude = 0; |
134 | pGPSPos->Status = INVALID; |
136 | pGPSPos->Status = INVALID; |
135 | retval = 1; |
137 | retval = 1; |
136 | } |
138 | } |
137 | return (retval); |
139 | return (retval); |
138 | } |
140 | } |
139 | 141 | ||
140 | // disable GPS control sticks |
142 | // disable GPS control sticks |
141 | void GPS_Neutral(void) |
143 | void GPS_Neutral(void) |
142 | { |
144 | { |
143 | GPS_Nick = 0; |
145 | GPS_Nick = 0; |
144 | GPS_Roll = 0; |
146 | GPS_Roll = 0; |
145 | } |
147 | } |
146 | 148 | ||
147 | // calculates the GPS control stick values from the deviation to target position |
149 | // calculates the GPS control stick values from the deviation to target position |
148 | // if the pointer to the target positin is NULL or is the target position invalid |
150 | // if the pointer to the target positin is NULL or is the target position invalid |
149 | // then the P part of the controller is deactivated. |
151 | // then the P part of the controller is deactivated. |
150 | void GPS_PIDController(GPS_Pos_t *pTargetPos) |
152 | void GPS_PIDController(GPS_Pos_t *pTargetPos) |
151 | { |
153 | { |
152 | static int32_t PID_Nick, PID_Roll; |
154 | static int32_t PID_Nick, PID_Roll; |
153 | int32_t coscompass, sincompass; |
155 | int32_t coscompass, sincompass; |
154 | int32_t GPSPosDev_North, GPSPosDev_East; // Position deviation in cm |
156 | int32_t GPSPosDev_North, GPSPosDev_East; // Position deviation in cm |
155 | int32_t P_North = 0, D_North = 0, P_East = 0, D_East = 0, I_North = 0, I_East = 0; |
157 | int32_t P_North = 0, D_North = 0, P_East = 0, D_East = 0, I_North = 0, I_East = 0; |
156 | int32_t PID_North = 0, PID_East = 0; |
158 | int32_t PID_North = 0, PID_East = 0; |
157 | static int32_t cos_target_latitude = 1; |
159 | static int32_t cos_target_latitude = 1; |
158 | static int32_t GPSPosDevIntegral_North = 0, GPSPosDevIntegral_East = 0; |
160 | static int32_t GPSPosDevIntegral_North = 0, GPSPosDevIntegral_East = 0; |
159 | static GPS_Pos_t *pLastTargetPos = 0; |
161 | static GPS_Pos_t *pLastTargetPos = 0; |
160 | 162 | ||
161 | // if GPS data and Compass are ok |
163 | // if GPS data and Compass are ok |
162 | if( GPS_IsSignalOK() && (CompassHeading >= 0) ) |
164 | if( GPS_IsSignalOK() && (CompassHeading >= 0) ) |
163 | { |
165 | { |
164 | 166 | ||
165 | if(pTargetPos != NULL) // if there is a target position |
167 | if(pTargetPos != NULL) // if there is a target position |
166 | { |
168 | { |
167 | if(pTargetPos->Status != INVALID) // and the position data are valid |
169 | if(pTargetPos->Status != INVALID) // and the position data are valid |
168 | { |
170 | { |
169 | // if the target data are updated or the target pointer has changed |
171 | // if the target data are updated or the target pointer has changed |
170 | if ((pTargetPos->Status != PROCESSED) || (pTargetPos != pLastTargetPos) ) |
172 | if ((pTargetPos->Status != PROCESSED) || (pTargetPos != pLastTargetPos) ) |
171 | { |
173 | { |
172 | // reset error integral |
174 | // reset error integral |
173 | GPSPosDevIntegral_North = 0; |
175 | GPSPosDevIntegral_North = 0; |
174 | GPSPosDevIntegral_East = 0; |
176 | GPSPosDevIntegral_East = 0; |
175 | // recalculate latitude projection |
177 | // recalculate latitude projection |
176 | cos_target_latitude = (int32_t)c_cos_8192((int16_t)(pTargetPos->Latitude/10000000L)); |
178 | cos_target_latitude = (int32_t)c_cos_8192((int16_t)(pTargetPos->Latitude/10000000L)); |
177 | // remember last target pointer |
179 | // remember last target pointer |
178 | pLastTargetPos = pTargetPos; |
180 | pLastTargetPos = pTargetPos; |
179 | // mark data as processed |
181 | // mark data as processed |
180 | pTargetPos->Status = PROCESSED; |
182 | pTargetPos->Status = PROCESSED; |
181 | } |
183 | } |
182 | // calculate position deviation from latitude and longitude differences |
184 | // calculate position deviation from latitude and longitude differences |
183 | GPSPosDev_North = (GPSInfo.latitude - pTargetPos->Latitude); // to calculate real cm we would need *111/100 additionally |
185 | GPSPosDev_North = (GPSInfo.latitude - pTargetPos->Latitude); // to calculate real cm we would need *111/100 additionally |
184 | GPSPosDev_East = (GPSInfo.longitude - pTargetPos->Longitude); // to calculate real cm we would need *111/100 additionally |
186 | GPSPosDev_East = (GPSInfo.longitude - pTargetPos->Longitude); // to calculate real cm we would need *111/100 additionally |
185 | // calculate latitude projection |
187 | // calculate latitude projection |
186 | GPSPosDev_East *= cos_target_latitude; |
188 | GPSPosDev_East *= cos_target_latitude; |
187 | GPSPosDev_East /= 8192; |
189 | GPSPosDev_East /= 8192; |
188 | } |
190 | } |
189 | else // no valid target position available |
191 | else // no valid target position available |
190 | { |
192 | { |
191 | // reset error |
193 | // reset error |
192 | GPSPosDev_North = 0; |
194 | GPSPosDev_North = 0; |
193 | GPSPosDev_East = 0; |
195 | GPSPosDev_East = 0; |
194 | // reset error integral |
196 | // reset error integral |
195 | GPSPosDevIntegral_North = 0; |
197 | GPSPosDevIntegral_North = 0; |
196 | GPSPosDevIntegral_East = 0; |
198 | GPSPosDevIntegral_East = 0; |
197 | } |
199 | } |
198 | } |
200 | } |
199 | else // no target position available |
201 | else // no target position available |
200 | { |
202 | { |
201 | // reset error |
203 | // reset error |
202 | GPSPosDev_North = 0; |
204 | GPSPosDev_North = 0; |
203 | GPSPosDev_East = 0; |
205 | GPSPosDev_East = 0; |
204 | // reset error integral |
206 | // reset error integral |
205 | GPSPosDevIntegral_North = 0; |
207 | GPSPosDevIntegral_North = 0; |
206 | GPSPosDevIntegral_East = 0; |
208 | GPSPosDevIntegral_East = 0; |
207 | } |
209 | } |
- | 210 | ||
- | 211 | GPSPosDevIntegral_North += GPSPosDev_North; |
|
- | 212 | GPSPosDevIntegral_East += GPSPosDev_East; |
|
- | 213 | GPS_LimitXY(&GPSPosDevIntegral_North, &GPSPosDevIntegral_East, GPS_POSINTEGRAL_LIMIT); |
|
208 | 214 | ||
- | 215 | //Calculate PID-components of the controller |
|
- | 216 | ||
- | 217 | // D-Part |
|
- | 218 | D_North = ((int32_t)FCParam.NaviGpsD * GPSInfo.velnorth)/256; |
|
- | 219 | D_East = ((int32_t)FCParam.NaviGpsD * GPSInfo.veleast)/256; |
|
209 | //Calculate PID-components of the controller |
220 | GPS_LimitXY(&D_North, &D_East, GPS_D_LIMIT); |
210 | 221 | ||
211 | // P-Part |
222 | // P-Part |
- | 223 | P_North = ((int32_t)FCParam.NaviGpsP * GPSPosDev_North)/1024; |
|
212 | P_North = ((int32_t)FCParam.NaviGpsP * GPSPosDev_North)/512; |
224 | P_East = ((int32_t)FCParam.NaviGpsP * GPSPosDev_East)/1024; |
213 | P_East = ((int32_t)FCParam.NaviGpsP * GPSPosDev_East)/512; |
225 | GPS_LimitXY(&P_North, &P_East, GPS_P_LIMIT); |
214 | 226 | ||
215 | // I-Part |
- | |
216 | I_North = ((int32_t)FCParam.NaviGpsI * GPSPosDevIntegral_North)/2048; |
- | |
217 | I_East = ((int32_t)FCParam.NaviGpsI * GPSPosDevIntegral_East)/2048; |
- | |
218 | - | ||
219 | // combine P- & I-Part |
- | |
220 | PID_North = P_North + I_North; |
- | |
221 | PID_East = P_East + I_East; |
227 | // I-Part |
222 | - | ||
223 | //limit PI-Part |
- | |
224 | if(!GPS_LimitXY(&PID_North, &PID_East, GPS_P_LIMIT)) |
- | |
225 | { |
- | |
226 | // P-Part limit is not reached |
- | |
227 | // update position error integrals |
- | |
228 | GPSPosDevIntegral_North += GPSPosDev_North/16; |
- | |
229 | if( GPSPosDevIntegral_North > GPS_POSDEV_INTEGRAL_LIMIT) GPSPosDevIntegral_North = GPS_POSDEV_INTEGRAL_LIMIT; |
- | |
230 | else if (GPSPosDevIntegral_North < -GPS_POSDEV_INTEGRAL_LIMIT) GPSPosDevIntegral_North = -GPS_POSDEV_INTEGRAL_LIMIT; |
- | |
231 | GPSPosDevIntegral_East += GPSPosDev_East/16; |
- | |
232 | if( GPSPosDevIntegral_East > GPS_POSDEV_INTEGRAL_LIMIT) GPSPosDevIntegral_East = GPS_POSDEV_INTEGRAL_LIMIT; |
- | |
233 | else if (GPSPosDevIntegral_East < -GPS_POSDEV_INTEGRAL_LIMIT) GPSPosDevIntegral_East = -GPS_POSDEV_INTEGRAL_LIMIT; |
- | |
234 | } |
- | |
235 | - | ||
236 | // D-Part |
228 | I_North = ((int32_t)FCParam.NaviGpsI * GPSPosDevIntegral_North)/8192; |
237 | D_North = ((int32_t)FCParam.NaviGpsD * GPSInfo.velnorth)/ 128; |
229 | I_East = ((int32_t)FCParam.NaviGpsI * GPSPosDevIntegral_East)/8192; |
238 | D_East = ((int32_t)FCParam.NaviGpsD * GPSInfo.veleast) / 128; |
230 | GPS_LimitXY(&I_North, &I_East, GPS_I_LIMIT); |
239 | 231 | ||
240 | // combine PI- and D-Part |
232 | // combine P & I & D-Part |
241 | PID_North += D_North; |
233 | PID_North = P_North + I_North + D_North; |
242 | PID_East += D_East; |
234 | PID_East = P_East + I_East + D_East; |
243 | 235 | ||
244 | // scale combination with gain. |
236 | // scale combination with gain. |
245 | PID_North = (PID_North * (int32_t)FCParam.NaviGpsGain) / 100; |
237 | PID_North = (PID_North * (int32_t)FCParam.NaviGpsGain) / 100; |
246 | PID_East = (PID_East * (int32_t)FCParam.NaviGpsGain) / 100; |
238 | PID_East = (PID_East * (int32_t)FCParam.NaviGpsGain) / 100; |
247 | 239 | ||
248 | // GPS to nick and roll settings |
240 | // GPS to nick and roll settings |
249 | 241 | ||
250 | // A positive nick angle moves head downwards (flying forward). |
242 | // A positive nick angle moves head downwards (flying forward). |
251 | // A positive roll angle tilts left side downwards (flying left). |
243 | // A positive roll angle tilts left side downwards (flying left). |
252 | // If compass heading is 0 the head of the copter is in north direction. |
244 | // If compass heading is 0 the head of the copter is in north direction. |
253 | // A positive nick angle will fly to north and a positive roll angle will fly to west. |
245 | // A positive nick angle will fly to north and a positive roll angle will fly to west. |
254 | // In case of a positive north deviation/velocity the |
246 | // In case of a positive north deviation/velocity the |
255 | // copter should fly to south (negative nick). |
247 | // copter should fly to south (negative nick). |
256 | // In case of a positive east position deviation and a positive east velocity the |
248 | // In case of a positive east position deviation and a positive east velocity the |
257 | // copter should fly to west (positive roll). |
249 | // copter should fly to west (positive roll). |
258 | // The influence of the GPS_Nick and GPS_Roll variable is contrarily to the stick values |
250 | // The influence of the GPS_Nick and GPS_Roll variable is contrarily to the stick values |
259 | // in the fc.c. Therefore a positive north deviation/velocity should result in a positive |
251 | // in the fc.c. Therefore a positive north deviation/velocity should result in a positive |
260 | // GPS_Nick and a positive east deviation/velocity should result in a negative GPS_Roll. |
252 | // GPS_Nick and a positive east deviation/velocity should result in a negative GPS_Roll. |
261 | 253 | ||
262 | coscompass = (int32_t)c_cos_8192(YawGyroHeading / YAW_GYRO_DEG_FACTOR); |
254 | coscompass = (int32_t)c_cos_8192(YawGyroHeading / YAW_GYRO_DEG_FACTOR); |
263 | sincompass = (int32_t)c_sin_8192(YawGyroHeading / YAW_GYRO_DEG_FACTOR); |
255 | sincompass = (int32_t)c_sin_8192(YawGyroHeading / YAW_GYRO_DEG_FACTOR); |
264 | PID_Nick = (PID_Nick + (coscompass * PID_North + sincompass * PID_East) / 8192)/2; |
256 | PID_Nick = (PID_Nick + (coscompass * PID_North + sincompass * PID_East) / 8192)/2; |
265 | PID_Roll = (PID_Roll + (sincompass * PID_North - coscompass * PID_East) / 8192)/2; |
257 | PID_Roll = (PID_Roll + (sincompass * PID_North - coscompass * PID_East) / 8192)/2; |
266 | 258 | ||
267 | 259 | ||
268 | // limit resulting GPS control vector |
260 | // limit resulting GPS control vector |
269 | GPS_LimitXY(&PID_Nick, &PID_Roll, GPS_STICK_LIMIT); |
261 | GPS_LimitXY(&PID_Nick, &PID_Roll, GPS_STICK_LIMIT); |
270 | 262 | ||
271 | GPS_Nick = (int16_t)PID_Nick; |
263 | GPS_Nick = (int16_t)PID_Nick; |
272 | GPS_Roll = (int16_t)PID_Roll; |
264 | GPS_Roll = (int16_t)PID_Roll; |
273 | } |
265 | } |
274 | else // invalid GPS data or bad compass reading |
266 | else // invalid GPS data or bad compass reading |
275 | { |
267 | { |
276 | GPS_Neutral(); // do nothing |
268 | GPS_Neutral(); // do nothing |
277 | // reset error integral |
269 | // reset error integral |
278 | GPSPosDevIntegral_North = 0; |
270 | GPSPosDevIntegral_North = 0; |
279 | GPSPosDevIntegral_East = 0; |
271 | GPSPosDevIntegral_East = 0; |
280 | } |
272 | } |
281 | } |
273 | } |
282 | 274 | ||
283 | 275 | ||
284 | 276 | ||
285 | 277 | ||
286 | void GPS_Main(void) |
278 | void GPS_Main(void) |
287 | { |
279 | { |
288 | static uint8_t GPS_P_Delay = 0; |
280 | static uint8_t GPS_P_Delay = 0; |
289 | static uint16_t beep_rythm = 0; |
281 | static uint16_t beep_rythm = 0; |
290 | 282 | ||
291 | GPS_UpdateParameter(); |
283 | GPS_UpdateParameter(); |
292 | 284 | ||
293 | // store home position if start of flight flag is set |
285 | // store home position if start of flight flag is set |
294 | if(MKFlags & MKFLAG_CALIBRATE) |
286 | if(MKFlags & MKFLAG_CALIBRATE) |
295 | { |
287 | { |
296 | if(GPS_SetCurrPosition(&HomePosition)) BeepTime = 700; |
288 | if(GPS_SetCurrPosition(&HomePosition)) BeepTime = 700; |
297 | } |
289 | } |
298 | 290 | ||
299 | switch(GPSInfo.status) |
291 | switch(GPSInfo.status) |
300 | { |
292 | { |
301 | case INVALID: // invalid gps data |
293 | case INVALID: // invalid gps data |
302 | GPS_Neutral(); |
294 | GPS_Neutral(); |
303 | if(FlightMode != GPS_FLIGHT_MODE_FREE) |
295 | if(FlightMode != GPS_FLIGHT_MODE_FREE) |
304 | { |
296 | { |
305 | BeepTime = 100; // beep if signal is neccesary |
297 | BeepTime = 100; // beep if signal is neccesary |
306 | } |
298 | } |
307 | break; |
299 | break; |
308 | case PROCESSED: // if gps data are already processed do nothing |
300 | case PROCESSED: // if gps data are already processed do nothing |
309 | // downcount timeout |
301 | // downcount timeout |
310 | if(GPSTimeout) GPSTimeout--; |
302 | if(GPSTimeout) GPSTimeout--; |
311 | // if no new data arrived within timeout set current data invalid |
303 | // if no new data arrived within timeout set current data invalid |
312 | // and therefore disable GPS |
304 | // and therefore disable GPS |
313 | else |
305 | else |
314 | { |
306 | { |
315 | GPS_Neutral(); |
307 | GPS_Neutral(); |
316 | GPSInfo.status = INVALID; |
308 | GPSInfo.status = INVALID; |
317 | } |
309 | } |
318 | break; |
310 | break; |
319 | case NEWDATA: // new valid data from gps device |
311 | case NEWDATA: // new valid data from gps device |
320 | // if the gps data quality is good |
312 | // if the gps data quality is good |
321 | beep_rythm++; |
313 | beep_rythm++; |
322 | 314 | ||
323 | if (GPS_IsSignalOK()) |
315 | if (GPS_IsSignalOK()) |
324 | { |
316 | { |
325 | switch(FlightMode) // check what's to do |
317 | switch(FlightMode) // check what's to do |
326 | { |
318 | { |
327 | case GPS_FLIGHT_MODE_FREE: |
319 | case GPS_FLIGHT_MODE_FREE: |
328 | // update hold position to current gps position |
320 | // update hold position to current gps position |
329 | GPS_SetCurrPosition(&HoldPosition); // can get invalid if gps signal is bad |
321 | GPS_SetCurrPosition(&HoldPosition); // can get invalid if gps signal is bad |
330 | // disable gps control |
322 | // disable gps control |
331 | GPS_Neutral(); |
323 | GPS_Neutral(); |
332 | break; |
324 | break; |
333 | 325 | ||
334 | case GPS_FLIGHT_MODE_AID: |
326 | case GPS_FLIGHT_MODE_AID: |
335 | if(HoldPosition.Status != INVALID) |
327 | if(HoldPosition.Status != INVALID) |
336 | { |
328 | { |
337 | if( GPS_IsManualControlled() ) // MK controlled by user |
329 | if( GPS_IsManualControlled() ) // MK controlled by user |
338 | { |
330 | { |
339 | // update hold point to current gps position |
331 | // update hold point to current gps position |
340 | GPS_SetCurrPosition(&HoldPosition); |
332 | GPS_SetCurrPosition(&HoldPosition); |
341 | // disable gps control |
333 | // disable gps control |
342 | GPS_Neutral(); |
334 | GPS_Neutral(); |
343 | GPS_P_Delay = 0; |
335 | GPS_P_Delay = 0; |
344 | } |
336 | } |
345 | else // GPS control active |
337 | else // GPS control active |
346 | { |
338 | { |
347 | if(GPS_P_Delay < 7) |
339 | if(GPS_P_Delay < 7) |
348 | { // delayed activation of P-Part for 8 cycles (8*0.25s = 2s) |
340 | { // delayed activation of P-Part for 8 cycles (8*0.25s = 2s) |
349 | GPS_P_Delay++; |
341 | GPS_P_Delay++; |
350 | GPS_SetCurrPosition(&HoldPosition); // update hold point to current gps position |
342 | GPS_SetCurrPosition(&HoldPosition); // update hold point to current gps position |
351 | GPS_PIDController(NULL); // activates only the D-Part |
343 | GPS_PIDController(NULL); // activates only the D-Part |
352 | } |
344 | } |
353 | else GPS_PIDController(&HoldPosition);// activates the P&D-Part |
345 | else GPS_PIDController(&HoldPosition);// activates the P&D-Part |
354 | } |
346 | } |
355 | } |
347 | } |
356 | else // invalid Hold Position |
348 | else // invalid Hold Position |
357 | { // try to catch a valid hold position from gps data input |
349 | { // try to catch a valid hold position from gps data input |
358 | GPS_SetCurrPosition(&HoldPosition); |
350 | GPS_SetCurrPosition(&HoldPosition); |
359 | GPS_Neutral(); |
351 | GPS_Neutral(); |
360 | } |
352 | } |
361 | break; |
353 | break; |
362 | 354 | ||
363 | case GPS_FLIGHT_MODE_HOME: |
355 | case GPS_FLIGHT_MODE_HOME: |
364 | if(HomePosition.Status != INVALID) |
356 | if(HomePosition.Status != INVALID) |
365 | { |
357 | { |
366 | // update hold point to current gps position |
358 | // update hold point to current gps position |
367 | // to avoid a flight back if home comming is deactivated |
359 | // to avoid a flight back if home comming is deactivated |
368 | GPS_SetCurrPosition(&HoldPosition); |
360 | GPS_SetCurrPosition(&HoldPosition); |
369 | if( GPS_IsManualControlled() ) // MK controlled by user |
361 | if( GPS_IsManualControlled() ) // MK controlled by user |
370 | { |
362 | { |
371 | GPS_Neutral(); |
363 | GPS_Neutral(); |
372 | } |
364 | } |
373 | else // GPS control active |
365 | else // GPS control active |
374 | { |
366 | { |
375 | GPS_PIDController(&HomePosition); |
367 | GPS_PIDController(&HomePosition); |
376 | } |
368 | } |
377 | } |
369 | } |
378 | else // bad home position |
370 | else // bad home position |
379 | { |
371 | { |
380 | BeepTime = 50; // signal invalid home position |
372 | BeepTime = 50; // signal invalid home position |
381 | // try to hold at least the position as a fallback option |
373 | // try to hold at least the position as a fallback option |
382 | 374 | ||
383 | if (HoldPosition.Status != INVALID) |
375 | if (HoldPosition.Status != INVALID) |
384 | { |
376 | { |
385 | if( GPS_IsManualControlled() ) // MK controlled by user |
377 | if( GPS_IsManualControlled() ) // MK controlled by user |
386 | { |
378 | { |
387 | GPS_Neutral(); |
379 | GPS_Neutral(); |
388 | } |
380 | } |
389 | else // GPS control active |
381 | else // GPS control active |
390 | { |
382 | { |
391 | GPS_PIDController(&HoldPosition); |
383 | GPS_PIDController(&HoldPosition); |
392 | } |
384 | } |
393 | } |
385 | } |
394 | else |
386 | else |
395 | { // try to catch a valid hold position |
387 | { // try to catch a valid hold position |
396 | GPS_SetCurrPosition(&HoldPosition); |
388 | GPS_SetCurrPosition(&HoldPosition); |
397 | GPS_Neutral(); |
389 | GPS_Neutral(); |
398 | } |
390 | } |
399 | } |
391 | } |
400 | break; // eof TSK_HOME |
392 | break; // eof TSK_HOME |
401 | default: // unhandled task |
393 | default: // unhandled task |
402 | GPS_Neutral(); |
394 | GPS_Neutral(); |
403 | break; // eof default |
395 | break; // eof default |
404 | } // eof switch GPS_Task |
396 | } // eof switch GPS_Task |
405 | } // eof gps data quality is good |
397 | } // eof gps data quality is good |
406 | else // gps data quality is bad |
398 | else // gps data quality is bad |
407 | { // disable gps control |
399 | { // disable gps control |
408 | GPS_Neutral(); |
400 | GPS_Neutral(); |
- | 401 | if(FlightMode != GPS_FLIGHT_MODE_FREE) |
|
- | 402 | { |
|
409 | // beep if signal is not sufficient |
403 | // beep if signal is not sufficient |
410 | if(!(GPSInfo.flags & FLAG_GPSFIXOK) && !(beep_rythm % 5)) BeepTime = 100; |
404 | if(!(GPSInfo.flags & FLAG_GPSFIXOK) && !(beep_rythm % 5)) BeepTime = 100; |
411 | else if (GPSInfo.satnum < ParamSet.NaviGpsMinSat && !(beep_rythm % 5)) BeepTime = 10; |
405 | else if (GPSInfo.satnum < ParamSet.NaviGpsMinSat && !(beep_rythm % 5)) BeepTime = 10; |
- | 406 | } |
|
412 | } |
407 | } |
413 | // set current data as processed to avoid further calculations on the same gps data |
408 | // set current data as processed to avoid further calculations on the same gps data |
414 | GPSInfo.status = PROCESSED; |
409 | GPSInfo.status = PROCESSED; |
415 | break; |
410 | break; |
416 | } // eof GPSInfo.status |
411 | } // eof GPSInfo.status |
417 | } |
412 | } |
418 | 413 | ||
419 | 414 |