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Diffstat (limited to 'altosui/AltosRecord.java')
| -rw-r--r-- | altosui/AltosRecord.java | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/altosui/AltosRecord.java b/altosui/AltosRecord.java new file mode 100644 index 00000000..1160a273 --- /dev/null +++ b/altosui/AltosRecord.java @@ -0,0 +1,219 @@ +/* + * Copyright © 2010 Keith Packard <keithp@keithp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ + +package altosui; + +import java.lang.*; +import java.text.*; +import java.util.HashMap; +import java.io.*; + +public class AltosRecord { + int version; + String callsign; + int serial; + int flight; + int rssi; + int status; + int state; + int tick; + int accel; + int pres; + int temp; + int batt; + int drogue; + int main; + int flight_accel; + int ground_accel; + int flight_vel; + int flight_pres; + int ground_pres; + int accel_plus_g; + int accel_minus_g; + AltosGPS gps; + + double time; /* seconds since boost */ + + /* + * Values for our MP3H6115A pressure sensor + * + * From the data sheet: + * + * Pressure range: 15-115 kPa + * Voltage at 115kPa: 2.82 + * Output scale: 27mV/kPa + * + * + * 27 mV/kPa * 2047 / 3300 counts/mV = 16.75 counts/kPa + * 2.82V * 2047 / 3.3 counts/V = 1749 counts/115 kPa + */ + + static final double counts_per_kPa = 27 * 2047 / 3300; + static final double counts_at_101_3kPa = 1674.0; + + static double + barometer_to_pressure(double count) + { + return ((count / 16.0) / 2047.0 + 0.095) / 0.009 * 1000.0; + } + + public double raw_pressure() { + return barometer_to_pressure(pres); + } + + public double filtered_pressure() { + return barometer_to_pressure(flight_pres); + } + + public double ground_pressure() { + return barometer_to_pressure(ground_pres); + } + + public double filtered_altitude() { + return AltosConvert.pressure_to_altitude(filtered_pressure()); + } + + public double raw_altitude() { + return AltosConvert.pressure_to_altitude(raw_pressure()); + } + + public double ground_altitude() { + return AltosConvert.pressure_to_altitude(ground_pressure()); + } + + public double filtered_height() { + return filtered_altitude() - ground_altitude(); + } + + public double raw_height() { + return raw_altitude() - ground_altitude(); + } + + public double battery_voltage() { + return AltosConvert.cc_battery_to_voltage(batt); + } + + public double main_voltage() { + return AltosConvert.cc_ignitor_to_voltage(main); + } + + public double drogue_voltage() { + return AltosConvert.cc_ignitor_to_voltage(drogue); + } + + /* Value for the CC1111 built-in temperature sensor + * Output voltage at 0°C = 0.755V + * Coefficient = 0.00247V/°C + * Reference voltage = 1.25V + * + * temp = ((value / 32767) * 1.25 - 0.755) / 0.00247 + * = (value - 19791.268) / 32768 * 1.25 / 0.00247 + */ + + static double + thermometer_to_temperature(double thermo) + { + return (thermo - 19791.268) / 32728.0 * 1.25 / 0.00247; + } + + public double temperature() { + return thermometer_to_temperature(temp); + } + + double accel_counts_per_mss() { + double counts_per_g = Math.abs(accel_minus_g - accel_plus_g) / 2; + + return counts_per_g / 9.80665; + } + public double acceleration() { + return (ground_accel - accel) / accel_counts_per_mss(); + } + + public double accel_speed() { + double speed = flight_vel / (accel_counts_per_mss() * 100.0); + return speed; + } + + public String state() { + return Altos.state_name(state); + } + + public static String gets(FileInputStream s) throws IOException { + int c; + String line = ""; + + while ((c = s.read()) != -1) { + if (c == '\r') + continue; + if (c == '\n') { + return line; + } + line = line + (char) c; + } + return null; + } + + public AltosRecord(AltosRecord old) { + version = old.version; + callsign = old.callsign; + serial = old.serial; + flight = old.flight; + rssi = old.rssi; + status = old.status; + state = old.state; + tick = old.tick; + accel = old.accel; + pres = old.pres; + temp = old.temp; + batt = old.batt; + drogue = old.drogue; + main = old.main; + flight_accel = old.flight_accel; + ground_accel = old.ground_accel; + flight_vel = old.flight_vel; + flight_pres = old.flight_pres; + ground_pres = old.ground_pres; + accel_plus_g = old.accel_plus_g; + accel_minus_g = old.accel_minus_g; + gps = new AltosGPS(old.gps); + } + + public AltosRecord() { + version = 0; + callsign = "N0CALL"; + serial = 0; + flight = 0; + rssi = 0; + status = 0; + state = Altos.ao_flight_startup; + tick = 0; + accel = 0; + pres = 0; + temp = 0; + batt = 0; + drogue = 0; + main = 0; + flight_accel = 0; + ground_accel = 0; + flight_vel = 0; + flight_pres = 0; + ground_pres = 0; + accel_plus_g = 0; + accel_minus_g = 0; + gps = new AltosGPS(); + } +} |