1 files changed, 127 insertions, 0 deletions
diff --git a/altoslib/AltosEeprom.java b/altoslib/AltosEeprom.java
new file mode 100644
index 00000000..dd5993c7
--- /dev/null
+++ b/altoslib/AltosEeprom.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright © 2013 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; version 2 of the License.
+ *
+ * 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_2;
+
+import java.io.*;
+import java.util.*;
+import java.text.*;
+
+public abstract class AltosEeprom implements AltosStateUpdate {
+	public int	cmd;
+	public int	tick;
+	public int	data8[];
+	public boolean	valid;
+
+	public int data8(int i) {
+		return data8[i];
+	}
+
+	public int data16(int i) {
+		return ((data8[i] | (data8[i+1] << 8)) << 16) >> 16;
+	}
+
+	public int data24(int i) {
+		return data8[i] | (data8[i+1] << 8) | (data8[i+2] << 16);
+	}
+
+	public int data32(int i) {
+		return data8[i] | (data8[i+1] << 8) | (data8[i+2] << 16) | (data8[i+3] << 24);
+	}
+
+	public final static int header_length = 4;
+
+	public abstract int record_length();
+
+	public void update_state(AltosState state) {
+		if (cmd == AltosLib.AO_LOG_FLIGHT)
+			state.set_boost_tick(tick);
+		else
+			state.set_tick(tick);
+	}
+
+	public void write(PrintStream out) {
+		out.printf("%c %04x", cmd, tick);
+		if (data8 != null) {
+			for (int i = 0; i < data8.length; i++)
+				out.printf (" %02x", data8[i]);
+		}
+		out.printf ("\n");
+	}
+
+	public String string() {
+		String	s;
+
+		s = String.format("%c %04x", cmd, tick);
+		if (data8 != null) {
+			for (int i = 0; i < data8.length; i++) {
+				String	d = String.format(" %02x", data8[i]);
+				s = s.concat(d);
+			}
+		}
+		s = s.concat("\n");
+		return s;
+	}
+
+	void parse_chunk(AltosEepromChunk chunk, int start) throws ParseException {
+		cmd = chunk.data(start);
+
+		int data_length = record_length() - header_length;
+
+		valid = !chunk.erased(start, record_length());
+		if (valid) {
+			if (AltosConvert.checksum(chunk.data, start, record_length()) != 0)
+				throw new ParseException(String.format("invalid checksum at 0x%x",
+								       chunk.address + start), 0);
+		} else {
+			cmd = AltosLib.AO_LOG_INVALID;
+		}
+
+		tick = chunk.data16(start+2);
+
+		data8 = new int[data_length];
+		for (int i = 0; i < data_length; i++)
+			data8[i] = chunk.data(start + header_length + i);
+	}
+
+	void parse_string(String line) {
+		valid = false;
+		tick = 0;
+		cmd = AltosLib.AO_LOG_INVALID;
+
+		int data_length = record_length() - header_length;
+
+		if (line == null)
+			return;
+		try {
+			String[] tokens = line.split("\\s+");
+
+			if (tokens[0].length() == 1) {
+				if (tokens.length == 2 + data_length) {
+					cmd = tokens[0].codePointAt(0);
+					tick = Integer.parseInt(tokens[1],16);
+					valid = true;
+					data8 = new int[data_length];
+
+					for (int i = 0; i < data_length; i++)
+						data8[i] = Integer.parseInt(tokens[2 + i],16);
+				}
+			}
+		} catch (NumberFormatException ne) {
+		}
+	}
+}