altoslib: Add new eeprom management code

[fw/altos] / altoslib / AltosEepromRecordTiny.java

diff --git a/altoslib/AltosEepromRecordTiny.java b/altoslib/AltosEepromRecordTiny.java
new file mode 100644 (file)
index 0000000..6c04bfe
--- /dev/null
+++ b/altoslib/AltosEepromRecordTiny.java
@@ -0,0 +1,81 @@
+/*
+ * 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.
+ */
+
+package org.altusmetrum.altoslib_11;
+
+public class AltosEepromRecordTiny extends AltosEepromRecord {
+       public static final int record_length = 2;
+
+       private int value() {
+               return eeprom.data16(start);
+       }
+
+       public int cmd() {
+               if (start == 0)
+                       return AltosLib.AO_LOG_FLIGHT;
+               if ((value() & 0x8000) != 0)
+                       return AltosLib.AO_LOG_STATE;
+               return AltosLib.AO_LOG_SENSOR;
+       }
+
+       public int tick() {
+               int     tick = 0;
+               int     step = 10;
+               for (int i = 2; i < start; i += 2)
+               {
+                       int v = eeprom.data16(i);
+
+                       if ((v & 0x8000) != 0) {
+                               if ((v & 0x7fff) >= AltosLib.ao_flight_drogue)
+                                       step = 100;
+                       } else {
+                               tick += step;
+                       }
+               }
+               return tick;
+       }
+
+       public void update_state(AltosState state) {
+               int value = data16(-header_length);
+
+               state.set_tick(tick());
+               switch (cmd()) {
+               case AltosLib.AO_LOG_FLIGHT:
+                       state.set_state(AltosLib.ao_flight_pad);
+                       state.set_flight(value);
+                       state.set_boost_tick(0);
+                       break;
+               case AltosLib.AO_LOG_STATE:
+                       state.set_state(value & 0x7fff);
+                       break;
+               case AltosLib.AO_LOG_SENSOR:
+                       state.set_pressure(AltosConvert.barometer_to_pressure(value));
+                       break;
+               }
+       }
+
+       public AltosEepromRecord next() {
+               if (start + record_length * 2 < eeprom.data.size())
+                       return new AltosEepromRecordTiny(eeprom, start + record_length);
+               return null;
+       }
+
+       public AltosEepromRecordTiny(AltosEepromNew eeprom, int start) {
+               super(eeprom, start, record_length);
+       }
+
+       public AltosEepromRecordTiny(AltosEepromNew eeprom) {
+               this(eeprom, 0);
+       }
+}