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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 java.util.HashMap;
  23 import java.io.*;
  24
  25 public class AltosRecord {
  26         final static int        MISSING = 0x7fffffff;
  27
  28         static final int        seen_flight = 1;
  29         static final int        seen_sensor = 2;
  30         static final int        seen_temp_volt = 4;
  31         static final int        seen_deploy = 8;
  32         static final int        seen_gps_time = 16;
  33         static final int        seen_gps_lat = 32;
  34         static final int        seen_gps_lon = 64;
  35         static final int        seen_companion = 128;
  36         int                     seen;
  37
  38         int     version;
  39         String  callsign;
  40         int     serial;
  41         int     flight;
  42         int     rssi;
  43         int     status;
  44         int     state;
  45         int     tick;
  46
  47         int     accel;
  48         int     pres;
  49         int     temp;
  50         int     batt;
  51         int     drogue;
  52         int     main;
  53
  54         int     ground_accel;
  55         int     ground_pres;
  56         int     accel_plus_g;
  57         int     accel_minus_g;
  58
  59         double  acceleration;
  60         double  speed;
  61         double  height;
  62
  63         int     flight_accel;
  64         int     flight_vel;
  65         int     flight_pres;
  66
  67         AltosGPS        gps;
  68
  69         double  time;   /* seconds since boost */
  70
  71         int     device_type;
  72         int     config_major;
  73         int     config_minor;
  74         int     apogee_delay;
  75         int     main_deploy;
  76         int     flight_log_max;
  77         String  firmware_version;
  78
  79         AltosRecordCompanion companion;
  80         /*
  81          * Values for our MP3H6115A pressure sensor
  82          *
  83          * From the data sheet:
  84          *
  85          * Pressure range: 15-115 kPa
  86          * Voltage at 115kPa: 2.82
  87          * Output scale: 27mV/kPa
  88          *
  89          *
  90          * 27 mV/kPa * 2047 / 3300 counts/mV = 16.75 counts/kPa
  91          * 2.82V * 2047 / 3.3 counts/V = 1749 counts/115 kPa
  92          */
  93
  94         static final double counts_per_kPa = 27 * 2047 / 3300;
  95         static final double counts_at_101_3kPa = 1674.0;
  96
  97         static double
  98         barometer_to_pressure(double count)
  99         {
 100                 return ((count / 16.0) / 2047.0 + 0.095) / 0.009 * 1000.0;
 101         }
 102
 103         public double raw_pressure() {
 104                 if (pres == MISSING)
 105                         return MISSING;
 106                 return barometer_to_pressure(pres);
 107         }
 108
 109         public double filtered_pressure() {
 110                 if (flight_pres == MISSING)
 111                         return MISSING;
 112                 return barometer_to_pressure(flight_pres);
 113         }
 114
 115         public double ground_pressure() {
 116                 if (ground_pres == MISSING)
 117                         return MISSING;
 118                 return barometer_to_pressure(ground_pres);
 119         }
 120
 121         public double raw_altitude() {
 122                 double p = raw_pressure();
 123                 if (p == MISSING)
 124                         return MISSING;
 125                 return AltosConvert.pressure_to_altitude(p);
 126         }
 127
 128         public double ground_altitude() {
 129                 double p = ground_pressure();
 130                 if (p == MISSING)
 131                         return MISSING;
 132                 return AltosConvert.pressure_to_altitude(p);
 133         }
 134
 135         public double filtered_altitude() {
 136                 if (height != MISSING && ground_pres != MISSING)
 137                         return height + ground_altitude();
 138
 139                 double  p = filtered_pressure();
 140                 if (p == MISSING)
 141                         return MISSING;
 142                 return AltosConvert.pressure_to_altitude(p);
 143         }
 144
 145         public double filtered_height() {
 146                 if (height != MISSING)
 147                         return height;
 148
 149                 double f = filtered_altitude();
 150                 double g = ground_altitude();
 151                 if (f == MISSING || g == MISSING)
 152                         return MISSING;
 153                 return f - g;
 154         }
 155
 156         public double raw_height() {
 157                 double r = raw_altitude();
 158                 double g = ground_altitude();
 159
 160                 if (r == MISSING || g == MISSING)
 161                         return height;
 162                 return r - g;
 163         }
 164
 165         public double battery_voltage() {
 166                 if (batt == MISSING)
 167                         return MISSING;
 168                 return AltosConvert.cc_battery_to_voltage(batt);
 169         }
 170
 171         public double main_voltage() {
 172                 if (main == MISSING)
 173                         return MISSING;
 174                 return AltosConvert.cc_ignitor_to_voltage(main);
 175         }
 176
 177         public double drogue_voltage() {
 178                 if (drogue == MISSING)
 179                         return MISSING;
 180                 return AltosConvert.cc_ignitor_to_voltage(drogue);
 181         }
 182
 183         /* Value for the CC1111 built-in temperature sensor
 184          * Output voltage at 0°C = 0.755V
 185          * Coefficient = 0.00247V/°C
 186          * Reference voltage = 1.25V
 187          *
 188          * temp = ((value / 32767) * 1.25 - 0.755) / 0.00247
 189          *      = (value - 19791.268) / 32768 * 1.25 / 0.00247
 190          */
 191
 192         static double
 193         thermometer_to_temperature(double thermo)
 194         {
 195                 return (thermo - 19791.268) / 32728.0 * 1.25 / 0.00247;
 196         }
 197
 198         public double temperature() {
 199                 if (temp == MISSING)
 200                         return MISSING;
 201                 return thermometer_to_temperature(temp);
 202         }
 203
 204         double accel_counts_per_mss() {
 205                 double  counts_per_g = Math.abs(accel_minus_g - accel_plus_g) / 2;
 206
 207                 return counts_per_g / 9.80665;
 208         }
 209
 210         public double acceleration() {
 211                 if (acceleration != MISSING)
 212                         return acceleration;
 213
 214                 if (ground_accel == MISSING || accel == MISSING)
 215                         return MISSING;
 216                 return (ground_accel - accel) / accel_counts_per_mss();
 217         }
 218
 219         public double accel_speed() {
 220                 if (speed != MISSING)
 221                         return speed;
 222                 if (flight_vel == MISSING)
 223                         return MISSING;
 224                 return flight_vel / (accel_counts_per_mss() * 100.0);
 225         }
 226
 227         public String state() {
 228                 return Altos.state_name(state);
 229         }
 230
 231         public static String gets(FileInputStream s) throws IOException {
 232                 int c;
 233                 String  line = "";
 234
 235                 while ((c = s.read()) != -1) {
 236                         if (c == '\r')
 237                                 continue;
 238                         if (c == '\n') {
 239                                 return line;
 240                         }
 241                         line = line + (char) c;
 242                 }
 243                 return null;
 244         }
 245
 246         public AltosRecord(AltosRecord old) {
 247                 version = old.version;
 248                 seen = old.seen;
 249                 callsign = old.callsign;
 250                 serial = old.serial;
 251                 flight = old.flight;
 252                 rssi = old.rssi;
 253                 status = old.status;
 254                 state = old.state;
 255                 tick = old.tick;
 256                 accel = old.accel;
 257                 pres = old.pres;
 258                 temp = old.temp;
 259                 batt = old.batt;
 260                 drogue = old.drogue;
 261                 main = old.main;
 262                 flight_accel = old.flight_accel;
 263                 ground_accel = old.ground_accel;
 264                 flight_vel = old.flight_vel;
 265                 flight_pres = old.flight_pres;
 266                 ground_pres = old.ground_pres;
 267                 accel_plus_g = old.accel_plus_g;
 268                 accel_minus_g = old.accel_minus_g;
 269                 acceleration = old.acceleration;
 270                 speed = old.speed;
 271                 height = old.height;
 272                 gps = new AltosGPS(old.gps);
 273                 companion = old.companion;
 274         }
 275
 276         public AltosRecord() {
 277                 version = 0;
 278                 seen = 0;
 279                 callsign = "N0CALL";
 280                 serial = 0;
 281                 flight = 0;
 282                 rssi = 0;
 283                 status = 0;
 284                 state = Altos.ao_flight_startup;
 285                 tick = 0;
 286                 accel = MISSING;
 287                 pres = MISSING;
 288                 temp = MISSING;
 289                 batt = MISSING;
 290                 drogue = MISSING;
 291                 main = MISSING;
 292                 flight_accel = 0;
 293                 ground_accel = 0;
 294                 flight_vel = 0;
 295                 flight_pres = 0;
 296                 ground_pres = 0;
 297                 accel_plus_g = 0;
 298                 accel_minus_g = 0;
 299                 acceleration = MISSING;
 300                 speed = MISSING;
 301                 height = MISSING;
 302                 gps = new AltosGPS();
 303                 companion = null;
 304         }
 305 }