altoslib: Add support for MicroPeak v2 eeprom format

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 163 insertions, 0 deletions

diff --git a/altoslib/AltosEepromRecordMicroPeak2.java b/altoslib/AltosEepromRecordMicroPeak2.java
new file mode 100644
index 00000000..06ae71f8
--- /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);
+	}
+}