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Re: [avr-libc-dev] [bug #37901] CRC-CCITT calculation incorrect

From: Joerg Wunsch
Subject: Re: [avr-libc-dev] [bug #37901] CRC-CCITT calculation incorrect
Date: Tue, 11 Dec 2012 17:01:15 +0100
User-agent: Mutt/1.5.20 (2009-06-14)

As Weddington, Eric wrote:

> Can we create an alias macro? _crc_xmega_ccitt_update()? Then put
> the explanation in the docs.

Why not just _crc_xmega_update()?

However, I'd like to see a reference for what the Xmega actually does
(and under which circumstances).  All I could find at the moment looks
fairly different from the CCITT x^16 + x^12 + x^2 + 1 one:


The guess there is it's x^19 + x^4 + x^3 + x^1 + 1.

cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)

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