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Rockbox mail archiveSubject: Re: serial line interference problemsRe: serial line interference problems
From: BlueChip <cs_bluechip_at_webtribe.net>
Date: Wed, 16 Jun 2004 10:13:10 +0100 Just a couple of wild guesses... 1. Have you checked that the line-in is disabled on the MAS? 2. Have you tried the anti-skip buffer to resolve the skipping issue? Maybe I guess lucky today? BC At 09:45 16/06/04, you wrote: >Hi all > >I did finish the development of my cd changer emulation. But there was one >thing I never did during the development: listen to the music. >Yesterday, I installed my sony head unit and my archos in my car, then I >discovered 2 problems: >First there is a very audible noise due to serial communications. I have >choosed to use the line-in connector, instead of the ear because of the >auto power on mod, to connect the serial line. Does anyone knows if the >noise is due to the line-in connection or directly because of the serial >line? have people who made the serial mod noticed noise interference >during communications? > >My second problem is partialy resolved: The software tx path that I used >was blocking interrupts inside the interrupt handler, causing pops in the >sound because of mp3 buffer underruns I think. What I did is lower the >serial interrupt level to 4 and allow interrupts during software tx. Now >there are no more pops but I have lots of transmission error. >Does anyone have a suggestion? > >I think I will have to connect the serial tx to the rx line so there will >be no more interrupt masking. > >Regards >Sophana >_______________________________________________ >http://cool.haxx.se/mailman/listinfo/rockbox _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockbox Received on 2004-06-16 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |