From 011615d40b3cb1d1c0ab9fa41e139e263a6a51e7 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Fri, 25 Mar 2011 21:34:31 -0700
Subject: altosui: Add support for downloading TeleMini/TeleNano flight logs

Splits the eeprom downloading code into eeprom block downloading and
separate eeprom data parsing so that the new data logging format can
share the data downloading code.

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 altosui/AltosEepromChunk.java | 88 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 altosui/AltosEepromChunk.java

(limited to 'altosui/AltosEepromChunk.java')

diff --git a/altosui/AltosEepromChunk.java b/altosui/AltosEepromChunk.java
new file mode 100644
index 00000000..8eec407d
--- /dev/null
+++ b/altosui/AltosEepromChunk.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright © 2011 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 altosui;
+
+import java.io.*;
+import java.util.*;
+import java.text.*;
+import java.util.concurrent.*;
+
+public class AltosEepromChunk {
+
+	static final int	chunk_size = 256;
+	static final int	per_line = 8;
+
+	public int		data[];
+	public int		address;
+	public ParseException	parse_exception = null;
+
+	int[] ParseHex(String line) {
+		String[] tokens = line.split("\\s+");
+		int[] array = new int[tokens.length];
+
+		for (int i = 0; i < tokens.length; i++)
+			try {
+				array[i] = Integer.parseInt(tokens[i], 16);
+			} catch (NumberFormatException ne) {
+				return null;
+			}
+		return array;
+	}
+
+	int data(int offset) {
+		return data[offset];
+	}
+
+	int data16(int offset) {
+		return data[offset] | (data[offset + 1] << 8);
+	}
+
+	public AltosEepromChunk(AltosSerial serial_line, int block)
+		throws TimeoutException, InterruptedException {
+
+		int	offset;
+
+		data = new int[chunk_size];
+		address = block * chunk_size;
+		serial_line.printf("e %x\n", block);
+
+		for (offset = 0; offset < chunk_size; offset += per_line) {
+			try {
+				String	line = serial_line.get_reply(5000);
+
+				if (line == null)
+					throw new TimeoutException();
+
+				int[] values = ParseHex(line);
+
+				if (values == null || values.length != per_line + 1)
+					throw new ParseException(String.format("invalid line %s", line), 0);
+				if (values[0] != offset)
+					throw new ParseException(String.format("data address out of sync at 0x%x",
+									       address + offset), 0);
+				for (int i = 0; i < per_line; i++)
+					data[offset + i] = values[1 + i];
+			} catch (ParseException pe) {
+				for (int i = 0; i < per_line; i++)
+					data[offset + i] = 0xff;
+				if (parse_exception == null)
+					parse_exception = pe;
+			}
+		}
+	}
+}
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