X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=altosui%2FAltosEepromChunk.java;fp=altosui%2FAltosEepromChunk.java;h=8eec407df395e4aa3ea3f4265f2a14ce6f7ffa1a;hb=011615d40b3cb1d1c0ab9fa41e139e263a6a51e7;hp=0000000000000000000000000000000000000000;hpb=dea80af81b388cc3d7073444919f4e98b12fa730;p=fw%2Faltos

diff --git a/altosui/AltosEepromChunk.java b/altosui/AltosEepromChunk.java
new file mode 100644
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+++ b/altosui/AltosEepromChunk.java
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+/*
+ * 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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