+/*
+ * Copyright © 2017 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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_11;
+
+import java.io.*;
+import java.util.*;
+import java.text.*;
+
+public class AltosEepromFireTwo extends AltosEeprom {
+ public static final int record_length = 32;
+
+ public int record_length() { return record_length; }
+
+ /* AO_LOG_FLIGHT elements */
+ public int flight() { return data16(0); }
+ public int idle_pres() { return data16(2); }
+ public int idle_thrust() { return data16(4); }
+
+ /* AO_LOG_STATE elements */
+ public int state() { return data16(0); }
+ public int reason() { return data16(2); }
+
+ /* AO_LOG_SENSOR elements */
+ public int pres() { return data16(0); }
+ public int thrust() { return data16(2); }
+ public int temp(int i) { return data16(4+i*2); }
+
+ public AltosEepromFireTwo (AltosEepromChunk chunk, int start) throws ParseException {
+ parse_chunk(chunk, start);
+ }
+
+ private static final double r_above = 5600.0;
+ private static final double r_below = 10000.0;
+ private static final double v_adc = 3.3;
+
+ private static double
+ firetwo_adc(int raw) {
+ return raw / 4095.0;
+ }
+
+ private static double
+ adc_to_pa(int adc) {
+
+ /* raw adc to processor voltage, then back through the
+ * voltage divider to the sensor voltage
+ */
+
+ double v = firetwo_adc(adc) * v_adc * (r_above + r_below) / r_below;
+
+ /* Bound to ranges provided in sensor */
+ if (v < 0.5) v = 0.5;
+ if (v > 4.5) v = 4.5;
+
+ double psi = (v - 0.5) / 4.0 * 1600.0;
+ return AltosConvert.psi_to_pa(psi);
+ }
+
+ public void update_state(AltosState state) {
+ super.update_state(state);
+
+ switch (cmd) {
+ case AltosLib.AO_LOG_FLIGHT:
+ state.set_flight(flight());
+ state.set_ground_pressure(adc_to_pa(idle_pres()));
+ break;
+ case AltosLib.AO_LOG_STATE:
+ state.set_state(state());
+ break;
+ case AltosLib.AO_LOG_SENSOR:
+ state.set_pressure(adc_to_pa(pres()));
+ break;
+ }
+ }
+
+ public AltosEepromFireTwo (String line) {
+ parse_string(line);
+ }
+
+ static public LinkedList<AltosEeprom> read(FileInputStream input) {
+ LinkedList<AltosEeprom> firetwos = new LinkedList<AltosEeprom>();
+
+ for (;;) {
+ try {
+ String line = AltosLib.gets(input);
+ if (line == null)
+ break;
+ try {
+ AltosEepromFireTwo firetwo = new AltosEepromFireTwo(line);
+
+ if (firetwo.cmd != AltosLib.AO_LOG_INVALID)
+ firetwos.add(firetwo);
+ } catch (Exception e) {
+ System.out.printf ("exception\n");
+ }
+ } catch (IOException ie) {
+ break;
+ }
+ }
+
+ return firetwos;
+ }
+}