altoslib: Add support for MicroPeak v2 eeprom format

[fw/altos] / altoslib / AltosEepromRecordMicroPeak2.java

diff --git a/altoslib/AltosEepromRecordMicroPeak2.java b/altoslib/AltosEepromRecordMicroPeak2.java
new file mode 100644 (file)
index 0000000..06ae71f
--- /dev/null
+++ b/altoslib/AltosEepromRecordMicroPeak2.java
@@ -0,0 +1,163 @@
+/*
+ * Copyright © 2019 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.
+ */
+
+package org.altusmetrum.altoslib_13;
+
+public class AltosEepromRecordMicroPeak2 extends AltosEepromRecord {
+       public static final int record_length = 2;
+
+       private static final int PA_GROUND_OFFSET = 0;
+       private static final int PA_MIN_OFFSET = 4;
+       private static final int N_SAMPLES_OFFSET = 8;
+       private static final int STARTING_LOG_OFFSET = 10;
+
+       private static final int LOG_ID_MICROPEAK = 0;
+       private static final int LOG_ID_MICROKITE = 1;
+       private static final int LOG_ID_MICROPEAK2 = 2;
+
+       private int value16(int o) {
+               return eeprom.data16(o);
+       }
+
+       private int value32(int o) {
+               return eeprom.data32(o);
+       }
+
+       public int cmd() {
+               if (start == 0)
+                       return AltosLib.AO_LOG_FLIGHT;
+               return AltosLib.AO_LOG_SENSOR;
+       }
+
+       private int pa_ground() {
+               return value32(PA_GROUND_OFFSET);
+       }
+
+       private int pa_min() {
+               return value32(PA_MIN_OFFSET);
+       }
+
+       private int log_id() {
+               return value16(N_SAMPLES_OFFSET) >> 12;
+       }
+
+       private int n_samples() {
+               return value16(N_SAMPLES_OFFSET) & 0xfff;
+       }
+
+       private int ticks_per_sample() {
+               int log_id = log_id();
+
+               if (log_id == LOG_ID_MICROPEAK)
+                       return 2;
+               if (log_id == LOG_ID_MICROKITE)
+                       return 200;
+               if (log_id == LOG_ID_MICROPEAK2)
+                       return 10;
+               return 1;
+       }
+
+       public int tick() {
+               if (start <= STARTING_LOG_OFFSET)
+                       return 0;
+               return ((start - STARTING_LOG_OFFSET) / 2) * ticks_per_sample();
+       }
+
+       public double ticks_per_sec() {
+               int log_id = log_id();
+
+               if (log_id == LOG_ID_MICROPEAK)
+                       return 1000.0/96.0;
+               if (log_id == LOG_ID_MICROKITE)
+                       return 1000 / 96.0;
+               if (log_id == LOG_ID_MICROPEAK2)
+                       return 100.0;
+               return 100.0;
+       }
+
+       int mix_in (int high, int low) {
+               return  high - (high & 0xffff) + low;
+       }
+
+       boolean closer (int target, int a, int b) {
+               return Math.abs (target - a) < Math.abs(target - b);
+       }
+
+       private int pressure() {
+               int cur = value32(PA_GROUND_OFFSET);
+               for (int s = STARTING_LOG_OFFSET; s <= start; s += 2) {
+                       int     k = value16(s);
+                       int     same = mix_in(cur, k);
+                       int     up = mix_in(cur + 0x10000, k);
+                       int     down = mix_in(cur - 0x10000, k);
+
+                       if (closer (cur, same, up)) {
+                               if (closer (cur, same, down))
+                                       cur = same;
+                               else
+                                       cur = down;
+                       } else {
+                               if (closer (cur, up, down))
+                                       cur = up;
+                               else
+                                       cur = down;
+                       }
+               }
+               return cur;
+       }
+
+       public void provide_data(AltosDataListener listener, AltosCalData cal_data) {
+               listener.set_tick(tick());
+               switch (cmd()) {
+               case AltosLib.AO_LOG_FLIGHT:
+                       int pa_ground = pa_ground();
+                       int pa_min = pa_min();
+                       int n_samples = n_samples();
+                       int log_id = log_id();
+                       listener.set_state(AltosLib.ao_flight_pad);
+                       listener.cal_data().set_ground_pressure(pa_ground);
+                       listener.cal_data().set_ticks_per_sec(ticks_per_sec());
+                       listener.cal_data().set_boost_tick();
+                       listener.set_avoid_duplicate_files();
+                       break;
+               case AltosLib.AO_LOG_SENSOR:
+                       listener.set_state(AltosLib.ao_flight_boost);
+                       listener.set_pressure(pressure());
+                       break;
+               }
+       }
+
+       public int next_start() {
+               if (start == 0)
+                       return STARTING_LOG_OFFSET;
+               if (start + 2 >= STARTING_LOG_OFFSET + 2 * n_samples())
+                       return -1;
+               return start + 2;
+       }
+
+       public AltosEepromRecord next() {
+               int     s = next_start();
+               if (s < 0)
+                       return null;
+               return new AltosEepromRecordMicroPeak2(eeprom, s);
+       }
+
+       public AltosEepromRecordMicroPeak2(AltosEeprom eeprom, int start) {
+               super(eeprom, start, record_length);
+       }
+
+       public AltosEepromRecordMicroPeak2(AltosEeprom eeprom) {
+               this(eeprom, 0);
+       }
+}