2 * Copyright © 2011 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
23 import java.util.concurrent.*;
24 import org.altusmetrum.AltosLib.*;
26 public class AltosEepromChunk {
28 static final int chunk_size = 256;
29 static final int per_line = 8;
33 public ParseException parse_exception = null;
35 int[] ParseHex(String line) {
36 String[] tokens = line.split("\\s+");
37 int[] array = new int[tokens.length];
39 for (int i = 0; i < tokens.length; i++)
41 array[i] = Integer.parseInt(tokens[i], 16);
42 } catch (NumberFormatException ne) {
48 int data(int offset) {
52 int data16(int offset) {
53 return data[offset] | (data[offset + 1] << 8);
56 int data32(int offset) {
57 return data[offset] | (data[offset + 1] << 8) |
58 (data[offset+2] << 16) | (data[offset+3] << 24);
61 boolean erased(int start, int len) {
62 for (int i = 0; i < len; i++)
63 if (data[start+i] != 0xff)
68 public AltosEepromChunk(AltosSerial serial_line, int block, boolean flush)
69 throws TimeoutException, InterruptedException {
73 data = new int[chunk_size];
74 address = block * chunk_size;
76 serial_line.flush_input();
77 serial_line.printf("e %x\n", block);
79 for (offset = 0; offset < chunk_size; offset += per_line) {
81 String line = serial_line.get_reply(5000);
84 throw new TimeoutException();
86 int[] values = ParseHex(line);
88 if (values == null || values.length != per_line + 1)
89 throw new ParseException(String.format("invalid line %s", line), 0);
90 if (values[0] != offset)
91 throw new ParseException(String.format("data address out of sync at 0x%x",
92 address + offset), 0);
93 for (int i = 0; i < per_line; i++)
94 data[offset + i] = values[1 + i];
95 } catch (ParseException pe) {
96 for (int i = 0; i < per_line; i++)
97 data[offset + i] = 0xff;
98 if (parse_exception == null)