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")
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