RE: [Discuss-gnuradio] gmsk2 - CRC and whitening

[Robitaille, Michael]

I will check out to see if I can find the GCC.

The whitening was very easy to implement.

Thanks,
Mike

-----Original Message-----
From: Eric Blossom [mailto:address@hidden 
Sent: Thursday, December 01, 2005 3:58 PM
To: address@hidden
Cc: address@hidden
Subject: Re: [Discuss-gnuradio] gmsk2 - CRC and whitening

On Thu, Dec 01, 2005 at 05:42:36PM -0500, address@hidden wrote:
> Good suggestions, will look into implementing CRC16 with hardware and the
> whitening for small payload.
> 
> Processor - Atmel AT90S8535 - face turns beat red. =)

The AVR processors are very nice.  Sort of a minature RISC architecture.
You've got 8K of flash, so I don't see any problem at all.  I think
there's a port of GCC that targets it too.

> Looking at the packet.sink code, it looks like it's independant of the CRC
> code.  Is this right?

Yes.  It just checks that it's found the sync pattern and that the
header length was properly detected.

> gmsk2_pkt.py uses delete_head().  I can't find this code, where is it?

gr_msg_queue.{h,cc}

Eric