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49 lines
1.6 KiB
Python
49 lines
1.6 KiB
Python
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#!/usr/bin/env python
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# Copyright 2009 Simon Arlott
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the Free
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# Software Foundation; either version 2 of the License, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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# more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc., 59
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# Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# Usage: cxacru-cf.py < cxacru-cf.bin
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# Output: values string suitable for the sysfs adsl_config attribute
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#
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# Warning: cxacru-cf.bin with MD5 hash cdbac2689969d5ed5d4850f117702110
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# contains mis-aligned values which will stop the modem from being able
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# to make a connection. If the first and last two bytes are removed then
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# the values become valid, but the modulation will be forced to ANSI
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# T1.413 only which may not be appropriate.
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#
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# The original binary format is a packed list of le32 values.
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import sys
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import struct
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i = 0
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while True:
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buf = sys.stdin.read(4)
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if len(buf) == 0:
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break
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elif len(buf) != 4:
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sys.stdout.write("\n")
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sys.stderr.write("Error: read {0} not 4 bytes\n".format(len(buf)))
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sys.exit(1)
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if i > 0:
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sys.stdout.write(" ")
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sys.stdout.write("{0:x}={1}".format(i, struct.unpack("<I", buf)[0]))
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i += 1
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sys.stdout.write("\n")
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