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817db5b3 SA |
1 | #!/usr/bin/env python |
2 | # Copyright 2009 Simon Arlott | |
3 | # | |
4 | # This program is free software; you can redistribute it and/or modify it | |
5 | # under the terms of the GNU General Public License as published by the Free | |
6 | # Software Foundation; either version 2 of the License, or (at your option) | |
7 | # any later version. | |
8 | # | |
9 | # This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | # more details. | |
13 | # | |
14 | # You should have received a copy of the GNU General Public License along with | |
15 | # this program; if not, write to the Free Software Foundation, Inc., 59 | |
16 | # Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 | # | |
18 | # Usage: cxacru-cf.py < cxacru-cf.bin | |
19 | # Output: values string suitable for the sysfs adsl_config attribute | |
20 | # | |
21 | # Warning: cxacru-cf.bin with MD5 hash cdbac2689969d5ed5d4850f117702110 | |
22 | # contains mis-aligned values which will stop the modem from being able | |
23 | # to make a connection. If the first and last two bytes are removed then | |
24 | # the values become valid, but the modulation will be forced to ANSI | |
25 | # T1.413 only which may not be appropriate. | |
26 | # | |
27 | # The original binary format is a packed list of le32 values. | |
28 | ||
29 | import sys | |
30 | import struct | |
31 | ||
32 | i = 0 | |
33 | while True: | |
34 | buf = sys.stdin.read(4) | |
35 | ||
36 | if len(buf) == 0: | |
37 | break | |
38 | elif len(buf) != 4: | |
39 | sys.stdout.write("\n") | |
40 | sys.stderr.write("Error: read {0} not 4 bytes\n".format(len(buf))) | |
41 | sys.exit(1) | |
42 | ||
43 | if i > 0: | |
44 | sys.stdout.write(" ") | |
45 | sys.stdout.write("{0:x}={1}".format(i, struct.unpack("<I", buf)[0])) | |
46 | i += 1 | |
47 | ||
48 | sys.stdout.write("\n") |