diff options
author | Bdale Garbee <bdale@gag.com> | 2012-09-12 20:01:22 -0600 |
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committer | Bdale Garbee <bdale@gag.com> | 2012-09-12 20:01:22 -0600 |
commit | 3b612efcd1dddc6a3d59012f7ed57754b1f798c2 (patch) | |
tree | 18d50713491ef96c5c127a309f870efb6c33f98d /altoslib/AltosEepromChunk.java | |
parent | e076773c1693e2a62bb828dee71c04c20dbab0a5 (diff) | |
parent | 01eb36408d7e0e826b431fcc1d3b2deb23607e0b (diff) |
Merge branch 'new-debian' into debian
Conflicts:
ChangeLog
debian/altos.install
debian/changelog
debian/control
debian/copyright
debian/dirs
debian/docs
debian/menu
debian/rules
src/Makefile
Diffstat (limited to 'altoslib/AltosEepromChunk.java')
-rw-r--r-- | altoslib/AltosEepromChunk.java | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/altoslib/AltosEepromChunk.java b/altoslib/AltosEepromChunk.java new file mode 100644 index 00000000..77b22fe2 --- /dev/null +++ b/altoslib/AltosEepromChunk.java @@ -0,0 +1,100 @@ +/* + * 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 org.altusmetrum.AltosLib; + +import java.text.*; +import java.util.concurrent.*; + +public class AltosEepromChunk { + + public static final int chunk_size = 256; + public 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; + } + + public int data(int offset) { + return data[offset]; + } + + public int data16(int offset) { + return data[offset] | (data[offset + 1] << 8); + } + + public int data32(int offset) { + return data[offset] | (data[offset + 1] << 8) | + (data[offset+2] << 16) | (data[offset+3] << 24); + } + + public boolean erased(int start, int len) { + for (int i = 0; i < len; i++) + if (data[start+i] != 0xff) + return false; + return true; + } + + public AltosEepromChunk(AltosLink link, int block, boolean flush) + throws TimeoutException, InterruptedException { + + int offset; + + data = new int[chunk_size]; + address = block * chunk_size; + if (flush) + link.flush_input(); + link.printf("e %x\n", block); + + for (offset = 0; offset < chunk_size; offset += per_line) { + try { + String line = link.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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