--- /dev/null
+/*
+ * Copyright © 2012 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 org.altusmetrum.AltosLib;
+
+public class AltosRecordTM extends AltosRecord {
+ public int accel;
+ public int pres;
+ public int temp;
+ public int batt;
+ public int drogue;
+ public int main;
+
+ public int ground_accel;
+ public int ground_pres;
+ public int accel_plus_g;
+ public int accel_minus_g;
+
+ public int flight_accel;
+ public int flight_vel;
+ public int flight_pres;
+
+ /*
+ * 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() {
+ if (pres == MISSING)
+ return MISSING;
+ return barometer_to_pressure(pres);
+ }
+
+ public double filtered_pressure() {
+ if (flight_pres == MISSING)
+ return MISSING;
+ return barometer_to_pressure(flight_pres);
+ }
+
+ public double ground_pressure() {
+ if (ground_pres == MISSING)
+ return MISSING;
+ return barometer_to_pressure(ground_pres);
+ }
+
+ public double battery_voltage() {
+ if (batt == MISSING)
+ return MISSING;
+ return AltosConvert.cc_battery_to_voltage(batt);
+ }
+
+ public double main_voltage() {
+ if (main == MISSING)
+ return MISSING;
+ return AltosConvert.cc_ignitor_to_voltage(main);
+ }
+
+ public double drogue_voltage() {
+ if (drogue == MISSING)
+ return MISSING;
+ 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() {
+ if (temp == MISSING)
+ return MISSING;
+ 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() {
+ if (acceleration != MISSING)
+ return acceleration;
+
+ if (ground_accel == MISSING || accel == MISSING)
+ return MISSING;
+ return (ground_accel - accel) / accel_counts_per_mss();
+ }
+
+ public double accel_speed() {
+ if (speed != MISSING)
+ return speed;
+ if (flight_vel == MISSING)
+ return MISSING;
+ return flight_vel / (accel_counts_per_mss() * 100.0);
+ }
+
+ public void copy(AltosRecordTM old) {
+ super.copy(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;
+ }
+
+ public AltosRecordTM clone() {
+ AltosRecordTM n = (AltosRecordTM) super.clone();
+ n.copy(this);
+ return n;
+ }
+
+ void make_missing() {
+ accel = MISSING;
+ pres = MISSING;
+ temp = MISSING;
+ batt = MISSING;
+ drogue = MISSING;
+ main = MISSING;
+
+ flight_accel = 0;
+ flight_vel = 0;
+ flight_pres = 0;
+
+ ground_accel = 0;
+ ground_pres = 0;
+ accel_plus_g = 0;
+ accel_minus_g = 0;
+ }
+
+ public AltosRecordTM(AltosRecord old) {
+ super.copy(old);
+ make_missing();
+ }
+
+ public AltosRecordTM() {
+ super();
+ make_missing();
+ }
+}
projects / fw / altos / blobdiff