1162e5221be70636fc7faa7d2d8373b4b0c3a21c
[fw/altos] / altoslib / AltosState.java
1 /*
2  * Copyright © 2010 Keith Packard <keithp@keithp.com>
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; version 2 of the License.
7  *
8  * This program is distributed in the hope that it will be useful, but
9  * WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11  * General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License along
14  * with this program; if not, write to the Free Software Foundation, Inc.,
15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
16  */
17
18 /*
19  * Track flight state from telemetry or eeprom data stream
20  */
21
22 package org.altusmetrum.altoslib_4;
23
24 public class AltosState implements Cloneable {
25
26         public static final int set_position = 1;
27         public static final int set_gps = 2;
28         public static final int set_data = 4;
29
30         public int set;
31
32         static final double ascent_filter_len = 0.5;
33         static final double descent_filter_len = 0.5;
34
35         /* derived data */
36
37         public long     received_time;
38
39         public double   time;
40         public double   prev_time;
41         public double   time_change;
42         public int      tick;
43         private int     prev_tick;
44         public int      boost_tick;
45
46         class AltosValue {
47                 private double  value;
48                 private double  prev_value;
49                 private double  max_value;
50                 private double  set_time;
51                 private double  prev_set_time;
52
53                 boolean can_max() { return true; }
54
55                 void set(double new_value, double time) {
56                         if (new_value != AltosLib.MISSING) {
57                                 value = new_value;
58                                 if (can_max() && (max_value == AltosLib.MISSING || value > max_value))
59                                         max_value = value;
60                                 set_time = time;
61                         }
62                 }
63
64                 void set_filtered(double new_value, double time) {
65                         if (prev_value != AltosLib.MISSING)
66                                 new_value = (prev_value * 15.0 + new_value) / 16.0;
67                         set(new_value, time);
68                 }
69
70                 double value() {
71                         return value;
72                 }
73
74                 double max() {
75                         return max_value;
76                 }
77
78                 double prev() {
79                         return prev_value;
80                 }
81
82                 double change() {
83                         if (value != AltosLib.MISSING && prev_value != AltosLib.MISSING)
84                                 return value - prev_value;
85                         return AltosLib.MISSING;
86                 }
87
88                 double rate() {
89                         double c = change();
90                         double t = set_time - prev_set_time;
91
92                         if (c != AltosLib.MISSING && t != 0)
93                                 return c / t;
94                         return AltosLib.MISSING;
95                 }
96
97                 double integrate() {
98                         if (value == AltosLib.MISSING)
99                                 return AltosLib.MISSING;
100                         if (prev_value == AltosLib.MISSING)
101                                 return AltosLib.MISSING;
102
103                         return (value + prev_value) / 2 * (set_time - prev_set_time);
104                 }
105
106                 double time() {
107                         return set_time;
108                 }
109
110                 void set_derivative(AltosValue in) {
111                         double  n = in.rate();
112
113                         if (n == AltosLib.MISSING)
114                                 return;
115
116                         double  p = prev_value;
117                         double  pt = prev_set_time;
118
119                         if (p == AltosLib.MISSING) {
120                                 p = 0;
121                                 pt = in.time() - 0.01;
122                         }
123
124                         /* Clip changes to reduce noise */
125                         double  ddt = in.time() - pt;
126                         double  ddv = (n - p) / ddt;
127
128                         final double max = 100000;
129
130                         /* 100gs */
131                         if (Math.abs(ddv) > max) {
132                                 if (n > p)
133                                         n = p + ddt * max;
134                                 else
135                                         n = p - ddt * max;
136                         }
137
138                         double filter_len;
139
140                         if (ascent)
141                                 filter_len = ascent_filter_len;
142                         else
143                                 filter_len = descent_filter_len;
144
145                         double f = 1/Math.exp(ddt/ filter_len);
146                         n = p * f + n * (1-f);
147
148                         set(n, in.time());
149                 }
150
151                 void set_integral(AltosValue in) {
152                         double  change = in.integrate();
153
154                         if (change != AltosLib.MISSING) {
155                                 double  prev = prev_value;
156                                 if (prev == AltosLib.MISSING)
157                                         prev = 0;
158                                 set(prev + change, in.time());
159                         }
160                 }
161
162                 void copy(AltosValue old) {
163                         value = old.value;
164                         set_time = old.set_time;
165                         prev_value = old.value;
166                         prev_set_time = old.set_time;
167                         max_value = old.max_value;
168                 }
169
170                 void finish_update() {
171                         prev_value = value;
172                         prev_set_time = set_time;
173                 }
174
175                 AltosValue() {
176                         value = AltosLib.MISSING;
177                         prev_value = AltosLib.MISSING;
178                         max_value = AltosLib.MISSING;
179                 }
180         }
181
182         class AltosCValue {
183                 AltosValue      measured;
184                 AltosValue      computed;
185
186                 double value() {
187                         double v = measured.value();
188                         if (v != AltosLib.MISSING)
189                                 return v;
190                         return computed.value();
191                 }
192
193                 boolean is_measured() {
194                         return measured.value() != AltosLib.MISSING;
195                 }
196
197                 double max() {
198                         double m = measured.max();
199
200                         if (m != AltosLib.MISSING)
201                                 return m;
202                         return computed.max();
203                 }
204
205                 double prev_value() {
206                         if (measured.value != AltosLib.MISSING && measured.prev_value != AltosLib.MISSING)
207                                 return measured.prev_value;
208                         return computed.prev_value;
209                 }
210
211                 AltosValue altos_value() {
212                         if (measured.value() != AltosLib.MISSING)
213                                 return measured;
214                         return computed;
215                 }
216
217                 double change() {
218                         double c = measured.change();
219                         if (c == AltosLib.MISSING)
220                                 c = computed.change();
221                         return c;
222                 }
223
224                 double rate() {
225                         double r = measured.rate();
226                         if (r == AltosLib.MISSING)
227                                 r = computed.rate();
228                         return r;
229                 }
230
231                 void set_measured(double new_value, double time) {
232                         measured.set(new_value, time);
233                 }
234
235                 void set_computed(double new_value, double time) {
236                         computed.set(new_value, time);
237                 }
238
239                 void set_derivative(AltosValue in) {
240                         computed.set_derivative(in);
241                 }
242
243                 void set_derivative(AltosCValue in) {
244                         set_derivative(in.altos_value());
245                 }
246
247                 void set_integral(AltosValue in) {
248                         computed.set_integral(in);
249                 }
250
251                 void set_integral(AltosCValue in) {
252                         set_integral(in.altos_value());
253                 }
254
255                 void copy(AltosCValue old) {
256                         measured.copy(old.measured);
257                         computed.copy(old.computed);
258                 }
259
260                 void finish_update() {
261                         measured.finish_update();
262                         computed.finish_update();
263                 }
264
265                 AltosCValue() {
266                         measured = new AltosValue();
267                         computed = new AltosValue();
268                 }
269         }
270
271         public int      state;
272         public int      flight;
273         public int      serial;
274         public int      receiver_serial;
275         public boolean  landed;
276         public boolean  ascent; /* going up? */
277         public boolean  boost;  /* under power */
278         public int      rssi;
279         public int      status;
280         public int      device_type;
281         public int      config_major;
282         public int      config_minor;
283         public int      apogee_delay;
284         public int      main_deploy;
285         public int      flight_log_max;
286
287         private double pressure_to_altitude(double p) {
288                 if (p == AltosLib.MISSING)
289                         return AltosLib.MISSING;
290                 return AltosConvert.pressure_to_altitude(p);
291         }
292
293         private AltosCValue ground_altitude;
294
295         public double ground_altitude() {
296                 return ground_altitude.value();
297         }
298
299         public void set_ground_altitude(double a) {
300                 ground_altitude.set_measured(a, time);
301         }
302
303         class AltosGpsGroundAltitude extends AltosValue {
304                 void set(double a, double t) {
305                         super.set(a, t);
306                         pad_alt = value();
307                         gps_altitude.set_gps_height();
308                 }
309
310                 void set_filtered(double a, double t) {
311                         super.set_filtered(a, t);
312                         pad_alt = value();
313                         gps_altitude.set_gps_height();
314                 }
315         }
316
317         private AltosGpsGroundAltitude gps_ground_altitude;
318
319         public double gps_ground_altitude() {
320                 return gps_ground_altitude.value();
321         }
322
323         public void set_gps_ground_altitude(double a) {
324                 gps_ground_altitude.set(a, time);
325         }
326
327         class AltosGroundPressure extends AltosCValue {
328                 void set_filtered(double p, double time) {
329                         computed.set_filtered(p, time);
330                         if (!is_measured())
331                                 ground_altitude.set_computed(pressure_to_altitude(computed.value()), time);
332                 }
333
334                 void set_measured(double p, double time) {
335                         super.set_measured(p, time);
336                         ground_altitude.set_computed(pressure_to_altitude(p), time);
337                 }
338         }
339
340         private AltosGroundPressure ground_pressure;
341
342         public double ground_pressure() {
343                 return ground_pressure.value();
344         }
345
346         public void set_ground_pressure (double pressure) {
347                 ground_pressure.set_measured(pressure, time);
348         }
349
350         class AltosAltitude extends AltosCValue {
351
352                 private void set_speed(AltosValue v) {
353                         if (!acceleration.is_measured() || !ascent)
354                                 speed.set_derivative(this);
355                 }
356
357                 void set_computed(double a, double time) {
358                         super.set_computed(a,time);
359                         set_speed(computed);
360                         set |= set_position;
361                 }
362
363                 void set_measured(double a, double time) {
364                         super.set_measured(a,time);
365                         set_speed(measured);
366                         set |= set_position;
367                 }
368         }
369
370         private AltosAltitude   altitude;
371
372         class AltosGpsAltitude extends AltosValue {
373
374                 private void set_gps_height() {
375                         double  a = value();
376                         double  g = gps_ground_altitude.value();
377
378                         if (a != AltosLib.MISSING && g != AltosLib.MISSING)
379                                 gps_height = a - g;
380                         else
381                                 gps_height = AltosLib.MISSING;
382                 }
383
384                 void set(double a, double t) {
385                         super.set(a, t);
386                         set_gps_height();
387                 }
388         }
389
390         private AltosGpsAltitude        gps_altitude;
391
392         private AltosValue              gps_ground_speed;
393         private AltosValue              gps_ascent_rate;
394         private AltosValue              gps_course;
395
396         public double altitude() {
397                 double a = altitude.value();
398                 if (a != AltosLib.MISSING)
399                         return a;
400                 return gps_altitude.value();
401         }
402
403         public double max_altitude() {
404                 double a = altitude.max();
405                 if (a != AltosLib.MISSING)
406                         return a;
407                 return gps_altitude.max();
408         }
409
410         public void set_altitude(double new_altitude) {
411                 altitude.set_measured(new_altitude, time);
412         }
413
414         public double gps_altitude() {
415                 return gps_altitude.value();
416         }
417
418         public double max_gps_altitude() {
419                 return gps_altitude.max();
420         }
421
422         public void set_gps_altitude(double new_gps_altitude) {
423                 gps_altitude.set(new_gps_altitude, time);
424         }
425
426         public double gps_ground_speed() {
427                 return gps_ground_speed.value();
428         }
429
430         public double gps_ascent_rate() {
431                 return gps_ascent_rate.value();
432         }
433
434         public double gps_course() {
435                 return gps_course.value();
436         }
437
438         class AltosPressure extends AltosValue {
439                 void set(double p, double time) {
440                         super.set(p, time);
441                         if (state == AltosLib.ao_flight_pad)
442                                 ground_pressure.set_filtered(p, time);
443                         double a = pressure_to_altitude(p);
444                         altitude.set_computed(a, time);
445                 }
446         }
447
448         private AltosPressure   pressure;
449
450         public double pressure() {
451                 return pressure.value();
452         }
453
454         public void set_pressure(double p) {
455                 pressure.set(p, time);
456         }
457
458         public double height() {
459                 double k = kalman_height.value();
460                 if (k != AltosLib.MISSING)
461                         return k;
462
463                 double a = altitude();
464                 double g = ground_altitude();
465                 if (a != AltosLib.MISSING && g != AltosLib.MISSING)
466                         return a - g;
467                 return AltosLib.MISSING;
468         }
469
470         public double max_height() {
471                 double  k = kalman_height.max();
472                 if (k != AltosLib.MISSING)
473                         return k;
474
475                 double a = altitude.max();
476                 double g = ground_altitude();
477                 if (a != AltosLib.MISSING && g != AltosLib.MISSING)
478                         return a - g;
479                 return AltosLib.MISSING;
480         }
481
482         public double gps_height() {
483                 double a = gps_altitude();
484                 double g = gps_ground_altitude();
485
486                 if (a != AltosLib.MISSING && g != AltosLib.MISSING)
487                         return a - g;
488                 return AltosLib.MISSING;
489         }
490
491         public double max_gps_height() {
492                 double a = gps_altitude.max();
493                 double g = gps_ground_altitude();
494
495                 if (a != AltosLib.MISSING && g != AltosLib.MISSING)
496                         return a - g;
497                 return AltosLib.MISSING;
498         }
499
500         class AltosSpeed extends AltosCValue {
501
502                 boolean can_max() {
503                         return state < AltosLib.ao_flight_fast;
504                 }
505
506                 void set_accel() {
507                         acceleration.set_derivative(this);
508                 }
509
510                 void set_derivative(AltosCValue in) {
511                         super.set_derivative(in);
512                         set_accel();
513                 }
514
515                 void set_computed(double new_value, double time) {
516                         super.set_computed(new_value, time);
517                         set_accel();
518                 }
519
520                 void set_measured(double new_value, double time) {
521                         super.set_measured(new_value, time);
522                         set_accel();
523                 }
524         }
525
526         private AltosSpeed speed;
527
528         public double speed() {
529                 double v = kalman_speed.value();
530                 if (v != AltosLib.MISSING)
531                         return v;
532                 return speed.value();
533         }
534
535         public double max_speed() {
536                 double v = kalman_speed.max();
537                 if (v != AltosLib.MISSING)
538                         return v;
539                 return speed.max();
540         }
541
542         class AltosAccel extends AltosCValue {
543
544                 boolean can_max() {
545                         return state < AltosLib.ao_flight_fast;
546                 }
547
548                 void set_measured(double a, double time) {
549                         super.set_measured(a, time);
550                         if (ascent)
551                                 speed.set_integral(this.measured);
552                 }
553         }
554
555         AltosAccel acceleration;
556
557         public double acceleration() {
558                 return acceleration.value();
559         }
560
561         public double max_acceleration() {
562                 return acceleration.max();
563         }
564
565         public AltosValue       orient;
566
567         public void set_orient(double new_orient) {
568                 orient.set(new_orient, time);
569         }
570
571         public double orient() {
572                 return orient.value();
573         }
574
575         public double max_orient() {
576                 return orient.max();
577         }
578
579         public AltosValue       kalman_height, kalman_speed, kalman_acceleration;
580
581         public void set_kalman(double height, double speed, double acceleration) {
582                 kalman_height.set(height, time);
583                 kalman_speed.set(speed, time);
584                 kalman_acceleration.set(acceleration, time);
585         }
586
587         public double   battery_voltage;
588         public double   pyro_voltage;
589         public double   temperature;
590         public double   apogee_voltage;
591         public double   main_voltage;
592
593         public double   ignitor_voltage[];
594
595         public AltosGPS gps;
596         public AltosGPS temp_gps;
597         public int temp_gps_sat_tick;
598         public boolean  gps_pending;
599         public int gps_sequence;
600
601         public AltosIMU imu;
602         public AltosMag mag;
603
604         public static final int MIN_PAD_SAMPLES = 10;
605
606         public int      npad;
607         public int      gps_waiting;
608         public boolean  gps_ready;
609
610         public int      ngps;
611
612         public AltosGreatCircle from_pad;
613         public double   elevation;      /* from pad */
614         public double   range;          /* total distance */
615
616         public double   gps_height;
617
618         public double pad_lat, pad_lon, pad_alt;
619
620         public int      speak_tick;
621         public double   speak_altitude;
622
623         public String   callsign;
624         public String   firmware_version;
625
626         public double   accel_plus_g;
627         public double   accel_minus_g;
628         public double   accel;
629         public double   ground_accel;
630         public double   ground_accel_avg;
631
632         public int      log_format;
633         public String   product;
634
635         public AltosMs5607      baro;
636
637         public AltosCompanion   companion;
638
639         public int      pyro_fired;
640
641         public void set_npad(int npad) {
642                 this.npad = npad;
643                 gps_waiting = MIN_PAD_SAMPLES - npad;
644                 if (this.gps_waiting < 0)
645                         gps_waiting = 0;
646                 gps_ready = gps_waiting == 0;
647         }
648
649         public void init() {
650                 set = 0;
651
652                 received_time = System.currentTimeMillis();
653                 time = AltosLib.MISSING;
654                 time_change = AltosLib.MISSING;
655                 prev_time = AltosLib.MISSING;
656                 tick = AltosLib.MISSING;
657                 prev_tick = AltosLib.MISSING;
658                 boost_tick = AltosLib.MISSING;
659                 state = AltosLib.ao_flight_invalid;
660                 flight = AltosLib.MISSING;
661                 landed = false;
662                 boost = false;
663                 rssi = AltosLib.MISSING;
664                 status = 0;
665                 device_type = AltosLib.MISSING;
666                 config_major = AltosLib.MISSING;
667                 config_minor = AltosLib.MISSING;
668                 apogee_delay = AltosLib.MISSING;
669                 main_deploy = AltosLib.MISSING;
670                 flight_log_max = AltosLib.MISSING;
671
672                 ground_altitude = new AltosCValue();
673                 ground_pressure = new AltosGroundPressure();
674                 altitude = new AltosAltitude();
675                 pressure = new AltosPressure();
676                 speed = new AltosSpeed();
677                 acceleration = new AltosAccel();
678                 orient = new AltosValue();
679
680                 temperature = AltosLib.MISSING;
681                 battery_voltage = AltosLib.MISSING;
682                 pyro_voltage = AltosLib.MISSING;
683                 apogee_voltage = AltosLib.MISSING;
684                 main_voltage = AltosLib.MISSING;
685                 ignitor_voltage = null;
686
687                 kalman_height = new AltosValue();
688                 kalman_speed = new AltosValue();
689                 kalman_acceleration = new AltosValue();
690
691                 gps = null;
692                 temp_gps = null;
693                 temp_gps_sat_tick = 0;
694                 gps_sequence = 0;
695                 gps_pending = false;
696
697                 imu = null;
698                 mag = null;
699
700                 set_npad(0);
701                 ngps = 0;
702
703                 from_pad = null;
704                 elevation = AltosLib.MISSING;
705                 range = AltosLib.MISSING;
706                 gps_height = AltosLib.MISSING;
707
708                 pad_lat = AltosLib.MISSING;
709                 pad_lon = AltosLib.MISSING;
710                 pad_alt = AltosLib.MISSING;
711
712                 gps_altitude = new AltosGpsAltitude();
713                 gps_ground_altitude = new AltosGpsGroundAltitude();
714                 gps_ground_speed = new AltosValue();
715                 gps_ascent_rate = new AltosValue();
716
717                 speak_tick = AltosLib.MISSING;
718                 speak_altitude = AltosLib.MISSING;
719
720                 callsign = null;
721
722                 accel_plus_g = AltosLib.MISSING;
723                 accel_minus_g = AltosLib.MISSING;
724                 accel = AltosLib.MISSING;
725
726                 ground_accel = AltosLib.MISSING;
727                 ground_accel_avg = AltosLib.MISSING;
728
729                 log_format = AltosLib.MISSING;
730                 product = null;
731                 serial = AltosLib.MISSING;
732                 receiver_serial = AltosLib.MISSING;
733
734                 baro = null;
735                 companion = null;
736
737                 pyro_fired = 0;
738         }
739
740         void finish_update() {
741                 prev_tick = tick;
742
743                 ground_altitude.finish_update();
744                 altitude.finish_update();
745                 pressure.finish_update();
746                 speed.finish_update();
747                 acceleration.finish_update();
748                 orient.finish_update();
749
750                 kalman_height.finish_update();
751                 kalman_speed.finish_update();
752                 kalman_acceleration.finish_update();
753         }
754
755         void copy(AltosState old) {
756
757                 if (old == null) {
758                         init();
759                         return;
760                 }
761
762                 received_time = old.received_time;
763                 time = old.time;
764                 time_change = old.time_change;
765                 prev_time = old.time;
766
767                 tick = old.tick;
768                 prev_tick = old.tick;
769                 boost_tick = old.boost_tick;
770
771                 state = old.state;
772                 flight = old.flight;
773                 landed = old.landed;
774                 ascent = old.ascent;
775                 boost = old.boost;
776                 rssi = old.rssi;
777                 status = old.status;
778                 device_type = old.device_type;
779                 config_major = old.config_major;
780                 config_minor = old.config_minor;
781                 apogee_delay = old.apogee_delay;
782                 main_deploy = old.main_deploy;
783                 flight_log_max = old.flight_log_max;
784
785                 set = 0;
786
787                 ground_pressure.copy(old.ground_pressure);
788                 ground_altitude.copy(old.ground_altitude);
789                 altitude.copy(old.altitude);
790                 pressure.copy(old.pressure);
791                 speed.copy(old.speed);
792                 acceleration.copy(old.acceleration);
793                 orient.copy(old.orient);
794
795                 battery_voltage = old.battery_voltage;
796                 pyro_voltage = old.pyro_voltage;
797                 temperature = old.temperature;
798                 apogee_voltage = old.apogee_voltage;
799                 main_voltage = old.main_voltage;
800                 ignitor_voltage = old.ignitor_voltage;
801
802                 kalman_height.copy(old.kalman_height);
803                 kalman_speed.copy(old.kalman_speed);
804                 kalman_acceleration.copy(old.kalman_acceleration);
805
806                 if (old.gps != null)
807                         gps = old.gps.clone();
808                 else
809                         gps = null;
810                 if (old.temp_gps != null)
811                         temp_gps = old.temp_gps.clone();
812                 else
813                         temp_gps = null;
814                 temp_gps_sat_tick = old.temp_gps_sat_tick;
815                 gps_sequence = old.gps_sequence;
816                 gps_pending = old.gps_pending;
817
818                 if (old.imu != null)
819                         imu = old.imu.clone();
820                 else
821                         imu = null;
822
823                 if (old.mag != null)
824                         mag = old.mag.clone();
825                 else
826                         mag = null;
827
828                 npad = old.npad;
829                 gps_waiting = old.gps_waiting;
830                 gps_ready = old.gps_ready;
831                 ngps = old.ngps;
832
833                 if (old.from_pad != null)
834                         from_pad = old.from_pad.clone();
835                 else
836                         from_pad = null;
837
838                 elevation = old.elevation;
839                 range = old.range;
840
841                 gps_height = old.gps_height;
842
843                 gps_altitude.copy(old.gps_altitude);
844                 gps_ground_altitude.copy(old.gps_ground_altitude);
845
846                 pad_lat = old.pad_lat;
847                 pad_lon = old.pad_lon;
848                 pad_alt = old.pad_alt;
849
850                 speak_tick = old.speak_tick;
851                 speak_altitude = old.speak_altitude;
852
853                 callsign = old.callsign;
854
855                 accel_plus_g = old.accel_plus_g;
856                 accel_minus_g = old.accel_minus_g;
857                 accel = old.accel;
858                 ground_accel = old.ground_accel;
859                 ground_accel_avg = old.ground_accel_avg;
860
861                 log_format = old.log_format;
862                 product = old.product;
863                 serial = old.serial;
864                 receiver_serial = old.receiver_serial;
865
866                 baro = old.baro;
867                 companion = old.companion;
868
869                 pyro_fired = old.pyro_fired;
870         }
871
872         void update_time() {
873         }
874
875         void update_gps() {
876                 elevation = 0;
877                 range = -1;
878
879                 if (gps == null)
880                         return;
881
882                 if (gps.locked && gps.nsat >= 4) {
883                         /* Track consecutive 'good' gps reports, waiting for 10 of them */
884                         if (state == AltosLib.ao_flight_pad) {
885                                 set_npad(npad+1);
886                                 if (pad_lat != AltosLib.MISSING) {
887                                         pad_lat = (pad_lat * 31 + gps.lat) / 32;
888                                         pad_lon = (pad_lon * 31 + gps.lon) / 32;
889                                         gps_ground_altitude.set_filtered(gps.alt, time);
890                                 }
891                         }
892                         if (pad_lat == AltosLib.MISSING) {
893                                 pad_lat = gps.lat;
894                                 pad_lon = gps.lon;
895                                 gps_ground_altitude.set(gps.alt, time);
896                         }
897                         gps_altitude.set(gps.alt, time);
898                         if (gps.climb_rate != AltosLib.MISSING)
899                                 gps_ascent_rate.set(gps.climb_rate, time);
900                         if (gps.ground_speed != AltosLib.MISSING)
901                                 gps_ground_speed.set(gps.ground_speed, time);
902                         if (gps.course != AltosLib.MISSING)
903                                 gps_course.set(gps.course, time);
904                 }
905                 if (gps.lat != 0 && gps.lon != 0 &&
906                     pad_lat != AltosLib.MISSING &&
907                     pad_lon != AltosLib.MISSING)
908                 {
909                         double h = height();
910
911                         if (h == AltosLib.MISSING)
912                                 h = 0;
913                         from_pad = new AltosGreatCircle(pad_lat, pad_lon, 0, gps.lat, gps.lon, h);
914                         elevation = from_pad.elevation;
915                         range = from_pad.range;
916                 }
917         }
918
919         public void set_tick(int new_tick) {
920                 if (new_tick != AltosLib.MISSING) {
921                         if (prev_tick != AltosLib.MISSING) {
922                                 while (new_tick < prev_tick - 1000) {
923                                         new_tick += 65536;
924                                 }
925                         }
926                         tick = new_tick;
927                         time = tick / 100.0;
928                         time_change = time - prev_time;
929                 }
930         }
931
932         public void set_boost_tick(int boost_tick) {
933                 if (boost_tick != AltosLib.MISSING)
934                         this.boost_tick = boost_tick;
935         }
936
937         public String state_name() {
938                 return AltosLib.state_name(state);
939         }
940
941         public void set_state(int state) {
942                 if (state != AltosLib.ao_flight_invalid) {
943                         this.state = state;
944                         ascent = (AltosLib.ao_flight_boost <= state &&
945                                   state <= AltosLib.ao_flight_coast);
946                         boost = (AltosLib.ao_flight_boost == state);
947                 }
948
949         }
950
951         public void set_device_type(int device_type) {
952                 this.device_type = device_type;
953         }
954
955         public void set_config(int major, int minor, int apogee_delay, int main_deploy, int flight_log_max) {
956                 config_major = major;
957                 config_minor = minor;
958                 this.apogee_delay = apogee_delay;
959                 this.main_deploy = main_deploy;
960                 this.flight_log_max = flight_log_max;
961         }
962
963         public void set_callsign(String callsign) {
964                 this.callsign = callsign;
965         }
966
967         public void set_firmware_version(String version) {
968                 firmware_version = version;
969         }
970
971         public void set_flight(int flight) {
972
973                 /* When the flight changes, reset the state */
974                 if (flight != AltosLib.MISSING && flight != 0) {
975                         if (this.flight != AltosLib.MISSING &&
976                             this.flight != flight) {
977                                 int bt = boost_tick;
978                                 init();
979                                 boost_tick = bt;
980                         }
981                         this.flight = flight;
982                 }
983         }
984
985         public void set_serial(int serial) {
986                 /* When the serial changes, reset the state */
987                 if (serial != AltosLib.MISSING) {
988                         if (this.serial != AltosLib.MISSING &&
989                             this.serial != serial) {
990                                 int bt = boost_tick;
991                                 init();
992                                 boost_tick = bt;
993                         }
994                         this.serial = serial;
995                 }
996         }
997
998         public void set_receiver_serial(int serial) {
999                 if (serial != AltosLib.MISSING)
1000                         receiver_serial = serial;
1001         }
1002
1003         public int rssi() {
1004                 if (rssi == AltosLib.MISSING)
1005                         return 0;
1006                 return rssi;
1007         }
1008
1009         public void set_rssi(int rssi, int status) {
1010                 if (rssi != AltosLib.MISSING) {
1011                         this.rssi = rssi;
1012                         this.status = status;
1013                 }
1014         }
1015
1016         public void set_received_time(long ms) {
1017                 received_time = ms;
1018         }
1019
1020         public void set_gps(AltosGPS gps, int sequence) {
1021                 if (gps != null) {
1022                         this.gps = gps.clone();
1023                         gps_sequence = sequence;
1024                         update_gps();
1025                         set |= set_gps;
1026                 }
1027         }
1028
1029         public void set_imu(AltosIMU imu) {
1030                 if (imu != null)
1031                         imu = imu.clone();
1032                 this.imu = imu;
1033         }
1034
1035         public void set_mag(AltosMag mag) {
1036                 this.mag = mag.clone();
1037         }
1038
1039         public AltosMs5607 make_baro() {
1040                 if (baro == null)
1041                         baro = new AltosMs5607();
1042                 return baro;
1043         }
1044
1045         public void set_ms5607(AltosMs5607 ms5607) {
1046                 baro = ms5607;
1047
1048                 if (baro != null) {
1049                         set_pressure(baro.pa);
1050                         set_temperature(baro.cc / 100.0);
1051                 }
1052         }
1053
1054         public void set_ms5607(int pres, int temp) {
1055                 if (baro != null) {
1056                         baro.set(pres, temp);
1057
1058                         set_pressure(baro.pa);
1059                         set_temperature(baro.cc / 100.0);
1060                 }
1061         }
1062
1063         public void make_companion (int nchannels) {
1064                 if (companion == null)
1065                         companion = new AltosCompanion(nchannels);
1066         }
1067
1068         public void set_companion(AltosCompanion companion) {
1069                 this.companion = companion;
1070         }
1071
1072         void update_accel() {
1073                 if (accel == AltosLib.MISSING)
1074                         return;
1075                 if (accel_plus_g == AltosLib.MISSING)
1076                         return;
1077                 if (accel_minus_g == AltosLib.MISSING)
1078                         return;
1079
1080                 double counts_per_g = (accel_minus_g - accel_plus_g) / 2.0;
1081                 double counts_per_mss = counts_per_g / 9.80665;
1082                 acceleration.set_measured((accel_plus_g - accel) / counts_per_mss, time);
1083         }
1084
1085         public void set_accel_g(double accel_plus_g, double accel_minus_g) {
1086                 if (accel_plus_g != AltosLib.MISSING) {
1087                         this.accel_plus_g = accel_plus_g;
1088                         this.accel_minus_g = accel_minus_g;
1089                         update_accel();
1090                 }
1091         }
1092
1093         public void set_ground_accel(double ground_accel) {
1094                 if (ground_accel != AltosLib.MISSING)
1095                         this.ground_accel = ground_accel;
1096         }
1097
1098         public void set_accel(double accel) {
1099                 if (accel != AltosLib.MISSING) {
1100                         this.accel = accel;
1101                         if (state == AltosLib.ao_flight_pad) {
1102                                 if (ground_accel_avg == AltosLib.MISSING)
1103                                         ground_accel_avg = accel;
1104                                 else
1105                                         ground_accel_avg = (ground_accel_avg * 7 + accel) / 8;
1106                         }
1107                 }
1108                 update_accel();
1109         }
1110
1111         public void set_temperature(double temperature) {
1112                 if (temperature != AltosLib.MISSING) {
1113                         this.temperature = temperature;
1114                         set |= set_data;
1115                 }
1116         }
1117
1118         public void set_battery_voltage(double battery_voltage) {
1119                 if (battery_voltage != AltosLib.MISSING) {
1120                         this.battery_voltage = battery_voltage;
1121                         set |= set_data;
1122                 }
1123         }
1124
1125         public void set_pyro_voltage(double pyro_voltage) {
1126                 if (pyro_voltage != AltosLib.MISSING) {
1127                         this.pyro_voltage = pyro_voltage;
1128                         set |= set_data;
1129                 }
1130         }
1131
1132         public void set_apogee_voltage(double apogee_voltage) {
1133                 if (apogee_voltage != AltosLib.MISSING) {
1134                         this.apogee_voltage = apogee_voltage;
1135                         set |= set_data;
1136                 }
1137         }
1138
1139         public void set_main_voltage(double main_voltage) {
1140                 if (main_voltage != AltosLib.MISSING) {
1141                         this.main_voltage = main_voltage;
1142                         set |= set_data;
1143                 }
1144         }
1145
1146         public void set_ignitor_voltage(double[] voltage) {
1147                 this.ignitor_voltage = voltage;
1148         }
1149
1150         public void set_pyro_fired(int fired) {
1151                 this.pyro_fired = fired;
1152         }
1153
1154         public double time_since_boost() {
1155                 if (tick == AltosLib.MISSING)
1156                         return 0.0;
1157
1158                 if (boost_tick == AltosLib.MISSING)
1159                         return tick / 100.0;
1160                 return (tick - boost_tick) / 100.0;
1161         }
1162
1163         public boolean valid() {
1164                 return tick != AltosLib.MISSING && serial != AltosLib.MISSING;
1165         }
1166
1167         public AltosGPS make_temp_gps(boolean sats) {
1168                 if (temp_gps == null) {
1169                         temp_gps = new AltosGPS(gps);
1170                 }
1171                 gps_pending = true;
1172                 if (sats) {
1173                         if (tick != temp_gps_sat_tick)
1174                                 temp_gps.cc_gps_sat = null;
1175                         temp_gps_sat_tick = tick;
1176                 }
1177                 return temp_gps;
1178         }
1179
1180         public void set_temp_gps() {
1181                 set_gps(temp_gps, gps_sequence + 1);
1182                 gps_pending = false;
1183                 temp_gps = null;
1184         }
1185
1186         public AltosState clone() {
1187                 AltosState s = new AltosState();
1188                 s.copy(this);
1189                 return s;
1190         }
1191
1192         public AltosState () {
1193                 init();
1194         }
1195 }