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Rockbox mail archiveSubject: Re: Two-way serial comms with no internal mods...Re: Two-way serial comms with no internal mods...
From: Joseph Jones <joe_at_bumpycarrot.cjb.net>
Date: Tue, 24 Feb 2004 10:44:19 +0000 Linus Nielsen Feltzing wrote: > Joseph Jones wrote: > >> I talked about this earlier a bit... >> >> Since two-way communication is possible if we use both the line-in's >> pin and the in-line remote pin (man, that looks dumb written like that >> :) ), > > > I sure didn't understand what you meant :-) > > Two-way communication is possible by changing the direction of the only > pin there is, the remote control input pin. > >> would the system be able to talk to PC-style hardware through a serial >> port? > > > Yes, but not without special hardware in between, both for voltage > conversion and to split the Input and Output to the Rx and Tx pins of > the PC port. I don't know much about PC hardware, but I assume that it > can't change the direction of the serial port pins. > > Also, you need to write a special protocol for the PC, as the > communication can only go in one direction at a time. > > Linus > > _______________________________________________ > http://cool.haxx.se/mailman/listinfo/rockbox > > Right, I think I've made a mis-understanding somewhere, I'm referring back to this thread: http://rockbox.haxx.se/mail/archive/rockbox-archive-2004-02/0166.shtml So it's only the in-line remote pin that can do any kind of I/O. I think somewhere I thought that the line-in had a 4th pin on it as well :/ So, basically, could the techniques that are used to interface with an Alpine CD changer also be used to talk to PC-hardware, with no internal mods, but allowing for external mods? I hope that made a bit more sense :) Joe _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockbox Received on 2004-02-24 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |