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http://www.tty1.net/pycrc/
pycrc is a free, easy to use Cyclic Redundancy Check (CRC) calculator and C source code generator.
pycrc requires Python 2.6 or later. Python 3.x is supported. The last version compatible with Python 2.x is pycrc v0.7.10.
This program doesn't need any particular installation. The script can be called from any directory. Simply call the python interpreter with the script as parameter:
python pycrc.py [options]
On UNIX-like systems, you might want to make the script executable:
chmod +x pycrc.py
Then the script can be called like an application.
./pycrc.py [options]
If you are new to pycrc and want to generate C code, start with the tutorial.
The pycrc manual page explains the command line options in some detail and also gives some more examples how to use pycrc.
If you have questions about using pycrc which is not answered in a satisfactory way by the documentation, please send a mail to the pycrc user mailing list pycrc-users@lists.sourceforge.net. Subscribe to the mailing list pycrc users list. Due to excessive spamming a subscription is required to post on the list.
If you have found a bug in pycrc, please take the time and file it to the bug tracker or record a feature request. Thanks for your collaboration.
Also see the frequently asked questions.
If you like pycrc, let me know and drop me a note. If you don't like pycrc let me know what you don't like and why. In both cases, I would really appreciate some feed back. If you want some idea how to say thanks for this software, please have a look here.
Prior to v0.6, pycrc was released under the GPL and an additional addition to the licence was required to permit to use the generated source code in products with a OSI unapproved licence. As of version 0.6, pycrc is released under the terms of the MIT licence and such an additional clause to the licence is no more required.