> Hi!
> Working on data exchange between a PIC and a PC via radio i'm looking to
> implement an error detection routine that's a bit more reliable than the
8 bit
> Checksum.
>
> Is there anywhere a code example for an 8 bit, 16 or even a 32 bit
CRC-CCIT
> ?
>
> Thank you in advance for any suggestion.


Daniel,

        I have an 8-bit CRC routine written for a 17c4x that I can post, if
        it's of any use to you.

        An excellent guide to CRC's (with some C source) is the CRC pitstop at:
        http://www.ross.net/crc/

        Andy Warren's page also has some example code for an 8-bit CRC that
        should get you started - they're really not very difficult to write.
        Andy Warren's example is at:
        http://pw2.netcom.com/~fastfwd/answers.html#PIC00076



- Andy.

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Andrew David, Software Manager, Ultronics Ltd, Cheltenham.
akdavid@Ultronics.co.uk          http:\\www.ultronics.com
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