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