Return-Path: Message-ID: <406AAFFF.6040504@soft.uni-linz.ac.at> Date: Wed, 31 Mar 2004 13:48:15 +0200 From: Simon Vogl MIME-Version: 1.0 To: Marcel Holtmann CC: BlueZ Mailing List Subject: Re: [Bluez-devel] sco / csr final notes References: <406A9E23.9000406@soft.uni-linz.ac.at> <1080730774.2674.6.camel@pegasus> Content-Type: text/plain; charset=ISO-8859-15; format=flowed List-ID: oh, sorry: well, after trying for weeks, I see always the same behavior of the sco data: after a connect of the sco channel, the data is either byte-swapped or offset by one byte, but no indication in any header etc. can be found why this is the case. The original assumption that there might be packets with a byte (or more) missing has not turned out to be right (could not find an indication of this). Anyway, as a workaround, I have implemented a small signal analysis function that tests, in short, if the incoming signal is gaussian or even distributed (the latter is an indication for a byte swap) - upon which I adapt the output accordingly. (the code is at http://www.soft.uni-linz.ac.at/_wiki/tiki-index.php?page=ProjectBluezHandsfree) Marcel, do you I can bug with this at csr? Simon Simon Marcel Holtmann wrote: > Hi Simon, > > >>well now I have a heuristic that works most of the time. Looking at the >>transmitted data, I wonder if there could be a big endian/little endian >>switch that is toggled randomly in the firmware for the 16bit sco data. >> >>Is there a lucky person with a developer kit out there who is able >>to confirm this? > > > please remind us about what your are talking, because it seems that at > least I forgot it. If you think you found a bug and you are able to > reproduce it, you should make a detailed description, so the CSR guys > can fix it. > > Regards > > Marcel > -- _______________________________________________________________________ Dr. Simon Vogl Institut f?r Pervasive Computing, Johannes Kepler Universit?t Linz Altenberger Stra?e 69, A-4040 Linz, Austria Tel: +43 732 2468-8517, Fax: +43 732 2468-8426 mailto: vogl@soft.uni-linz.ac.at, http://www.soft.uni-linz.ac.at/