On Jun 28, 2006, at 4:23 PM, Phil Keller wrote:

>   Can anyone point me to (or provide me with) some source code that
> implements the CRC generation/checking (either table driven or
> algorithm) in "C" please since I have been asked to limit my use of
> assembly since it makes it more difficult for them to maintain in the
> future.

You probably can't get more well-defined and widely implemented
than the CRC16 used by async PPP; RFC1549 contains a sample
table-driven implementation:
    http://www.rfc-archive.org/getrfc.php?rfc=1549

There are a lot of different possible Polynomials for a
give CRC length; could be your different implementations
implement different CRCs.

A 16 bit CRC is probably too much for a 4-byte packet, but
it probably makes less sense to implement two different CRC
algorithms.

BillW
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