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

[Weddington, Eric]

Joerg, do you have any idea how much this function is actually used?

I might be open to doing some renaming, if the pain that it would cause 
existing users is minimal.

I think it would be a good idea to support xmega users too.

Eric

> -----Original Message-----
> From: address@hidden
> [mailto:address@hidden On
> Behalf Of mojo
> Sent: Tuesday, December 11, 2012 7:29 AM
> To: Joerg Wunsch; mojo; address@hidden
> Subject: [avr-libc-dev] [bug #37901] CRC-CCITT calculation incorrect
> 
> Follow-up Comment #2, bug #37901 (project avr-libc):
> 
> Okay, but in that case I think that needs to be made clear.
> 
> The standard CCITT CRC should produce an endian and bit-order independent
> result that is compatible with other implementations. I understand that it
> is
> designed to be compatible with the IRDA standard, but it appears to be a
> mistake on their part or at least the result of confusion over which
> version
> people are usually referring to by that name.
> 
> As I pointed out, the biggest issue for me is that it is incompatible with
> the
> XMEGA CRC module's implementation. Renaming the functions is probably out
> of
> the question now, but the documentation should at least be amended to make
> it
> clear which one you might want to use. There are lots of threads on AVR
> Freaks
> from confused programmers wondering why it doesn't work.
> 
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