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   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 package altosui;
  19
  20 import java.lang.*;
  21 import java.text.*;
  22 import altosui.AltosParse;
  23
  24
  25 public class AltosGPS {
  26         public class AltosGPSSat {
  27                 int     svid;
  28                 int     c_n0;
  29         }
  30
  31         int     nsat;
  32         boolean locked;
  33         boolean connected;
  34         boolean date_valid;
  35         double  lat;            /* degrees (+N -S) */
  36         double  lon;            /* degrees (+E -W) */
  37         int     alt;            /* m */
  38         int     year;
  39         int     month;
  40         int     day;
  41         int     hour;
  42         int     minute;
  43         int     second;
  44
  45         int     gps_extended;   /* has extra data */
  46         double  ground_speed;   /* m/s */
  47         int     course;         /* degrees */
  48         double  climb_rate;     /* m/s */
  49         double  hdop;           /* unitless? */
  50         int     h_error;        /* m */
  51         int     v_error;        /* m */
  52
  53         AltosGPSSat[] cc_gps_sat;       /* tracking data */
  54
  55         void ParseGPSTime(String date, String time) throws ParseException {
  56                 String[] ymd = date.split("-");
  57                 if (ymd.length != 3)
  58                         throw new ParseException("error parsing GPS date " + date + " got " + ymd.length, 0);
  59                 year = AltosParse.parse_int(ymd[0]);
  60                 month = AltosParse.parse_int(ymd[1]);
  61                 day = AltosParse.parse_int(ymd[2]);
  62
  63                 String[] hms = time.split(":");
  64                 if (hms.length != 3)
  65                         throw new ParseException("Error parsing GPS time " + time + " got " + hms.length, 0);
  66                 hour = AltosParse.parse_int(hms[0]);
  67                 minute = AltosParse.parse_int(hms[1]);
  68                 second = AltosParse.parse_int(hms[2]);
  69         }
  70
  71         void ClearGPSTime() {
  72                 year = month = day = 0;
  73                 hour = minute = second = 0;
  74         }
  75
  76         public AltosGPS(String[] words, int i) throws ParseException {
  77                 AltosParse.word(words[i++], "GPS");
  78                 nsat = AltosParse.parse_int(words[i++]);
  79                 AltosParse.word(words[i++], "sat");
  80
  81                 connected = false;
  82                 locked = false;
  83                 lat = lon = 0;
  84                 alt = 0;
  85                 ClearGPSTime();
  86                 if ((words[i]).equals("unlocked")) {
  87                         connected = true;
  88                         i++;
  89                 } else if ((words[i]).equals("not-connected")) {
  90                         i++;
  91                 } else if (words.length >= 40) {
  92                         locked = true;
  93                         connected = true;
  94
  95                         ParseGPSTime(words[i], words[i+1]); i += 2;
  96                         lat = AltosParse.parse_coord(words[i++]);
  97                         lon = AltosParse.parse_coord(words[i++]);
  98                         alt = AltosParse.parse_int(AltosParse.strip_suffix(words[i++], "m"));
  99                         ground_speed = AltosParse.parse_double(AltosParse.strip_suffix(words[i++], "m/s(H)"));
 100                         course = AltosParse.parse_int(AltosParse.strip_suffix(words[i++], "Â°"));
 101                         climb_rate = AltosParse.parse_double(AltosParse.strip_suffix(words[i++], "m/s(V)"));
 102                         hdop = AltosParse.parse_double(AltosParse.strip_suffix(words[i++], "(hdop)"));
 103                         h_error = AltosParse.parse_int(AltosParse.strip_suffix(words[i++], "(herr)"));
 104                         v_error = AltosParse.parse_int(AltosParse.strip_suffix(words[i++], "(verr)"));
 105                 } else {
 106                         i++;
 107                 }
 108                 AltosParse.word(words[i++], "SAT");
 109                 int tracking_channels = 0;
 110                 if (words[i].equals("not-connected"))
 111                         tracking_channels = 0;
 112                 else
 113                         tracking_channels = AltosParse.parse_int(words[i]);
 114                 i++;
 115                 cc_gps_sat = new AltosGPS.AltosGPSSat[tracking_channels];
 116                 for (int chan = 0; chan < tracking_channels; chan++) {
 117                         cc_gps_sat[chan] = new AltosGPS.AltosGPSSat();
 118                         cc_gps_sat[chan].svid = AltosParse.parse_int(words[i++]);
 119                         cc_gps_sat[chan].c_n0 = AltosParse.parse_int(words[i++]);
 120                 }
 121         }
 122
 123         public void set_latitude(int in_lat) {
 124                 lat = in_lat / 10.0e7;
 125         }
 126
 127         public void set_longitude(int in_lon) {
 128                 lon = in_lon / 10.0e7;
 129         }
 130
 131         public void set_time(int hour, int minute, int second) {
 132                 hour = hour;
 133                 minute = minute;
 134                 second = second;
 135         }
 136
 137         public void set_date(int year, int month, int day) {
 138                 year = year;
 139                 month = month;
 140                 day = day;
 141         }
 142
 143         public void set_flags(int flags) {
 144                 flags = flags;
 145         }
 146
 147         public void set_altitude(int altitude) {
 148                 altitude = altitude;
 149         }
 150
 151         public void add_sat(int svid, int c_n0) {
 152                 if (cc_gps_sat == null) {
 153                         cc_gps_sat = new AltosGPS.AltosGPSSat[1];
 154                 } else {
 155                         AltosGPSSat[] new_gps_sat = new AltosGPS.AltosGPSSat[cc_gps_sat.length + 1];
 156                         for (int i = 0; i < cc_gps_sat.length; i++)
 157                                 new_gps_sat[i] = cc_gps_sat[i];
 158                         cc_gps_sat = new_gps_sat;
 159                 }
 160                 AltosGPS.AltosGPSSat    sat = new AltosGPS.AltosGPSSat();
 161                 sat.svid = svid;
 162                 sat.c_n0 = c_n0;
 163                 cc_gps_sat[cc_gps_sat.length - 1] = sat;
 164         }
 165
 166         public AltosGPS() {
 167                 ClearGPSTime();
 168                 cc_gps_sat = null;
 169         }
 170
 171         public AltosGPS(AltosGPS old) {
 172                 nsat = old.nsat;
 173                 locked = old.locked;
 174                 connected = old.connected;
 175                 lat = old.lat;          /* degrees (+N -S) */
 176                 lon = old.lon;          /* degrees (+E -W) */
 177                 alt = old.alt;          /* m */
 178                 year = old.year;
 179                 month = old.month;
 180                 day = old.day;
 181                 hour = old.hour;
 182                 minute = old.minute;
 183                 second = old.second;
 184
 185                 gps_extended = old.gps_extended;        /* has extra data */
 186                 ground_speed = old.ground_speed;        /* m/s */
 187                 course = old.course;            /* degrees */
 188                 climb_rate = old.climb_rate;    /* m/s */
 189                 hdop = old.hdop;                /* unitless? */
 190                 h_error = old.h_error;  /* m */
 191                 v_error = old.v_error;  /* m */
 192
 193                 if (old.cc_gps_sat != null) {
 194                         cc_gps_sat = new AltosGPSSat[old.cc_gps_sat.length];
 195                         for (int i = 0; i < old.cc_gps_sat.length; i++) {
 196                                 cc_gps_sat[i] = new AltosGPSSat();
 197                                 cc_gps_sat[i].svid = old.cc_gps_sat[i].svid;
 198                                 cc_gps_sat[i].c_n0 = old.cc_gps_sat[i].c_n0;
 199                         }
 200                 }
 201         }
 202 }