2 * Copyright © 2017 Keith Packard <keithp@keithp.com>
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; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
19 package org.altusmetrum.altoslib_12;
25 public class AltosEepromRecordFireTwo extends AltosEepromRecord {
26 public static final int record_length = 32;
28 /* AO_LOG_FLIGHT elements */
29 public int flight() { return data16(0); }
31 /* AO_LOG_STATE elements */
32 public int state() { return data16(0); }
33 public int reason() { return data16(2); }
35 /* AO_LOG_SENSOR elements */
36 public int pres() { return data16(0); }
37 public int thrust() { return data16(2); }
38 public int temp(int i) { return data16(4+i*2); }
40 private static final double r_above = 5600.0;
41 private static final double r_below = 10000.0;
42 private static final double v_adc = 3.3;
44 private static double firetwo_adc(int raw) {
48 public static double adc_to_pa(int adc) {
50 /* raw adc to processor voltage, then back through the
51 * voltage divider to the sensor voltage
54 double v = firetwo_adc(adc) * v_adc * (r_above + r_below) / r_below;
56 /* Bound to ranges provided in sensor */
60 double psi = (v - 0.5) / 4.0 * 2500.0;
61 return AltosConvert.psi_to_pa(psi);
64 public static double adc_to_n(int adc) {
65 double v = firetwo_adc(adc);
67 /* this is a total guess */
68 return AltosConvert.lb_to_n(v * 298 * 9.807);
71 public void provide_data(AltosDataListener listener, AltosCalData cal_data) {
72 super.provide_data(listener, cal_data);
75 case AltosLib.AO_LOG_FLIGHT:
76 cal_data.set_flight(flight());
78 case AltosLib.AO_LOG_STATE:
79 listener.set_state(state());
81 case AltosLib.AO_LOG_SENSOR:
82 listener.set_pressure(adc_to_pa(pres()));
83 listener.set_thrust(adc_to_n(thrust()));
88 public AltosEepromRecord next() {
92 return new AltosEepromRecordFireTwo(eeprom, s);
95 public AltosEepromRecordFireTwo(AltosEeprom eeprom, int start) {
96 super(eeprom, start, record_length);
99 public AltosEepromRecordFireTwo(AltosEeprom eeprom) {