Date: Mon, 4 May 1998 09:04:02 +0200 (CEST) From: Dirk-Willem van Gulik <dirk.vangulik@jrc.it> To: Luigi Rizzo <luigi@labinfo.iet.unipi.it> Cc: brian@Awfulhak.org, itojun@itojun.org, current@FreeBSD.ORG Subject: Re: Infrared ? (a simple experiment for laptop owners...) Message-ID: <Pine.BSF.3.96.980504085845.19474B-100000@mda00.jrc.it> In-Reply-To: <199805040346.FAA05409@labinfo.iet.unipi.it>
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On Mon, 4 May 1998, Luigi Rizzo wrote: > > > What i was wondering, though, is if we could implement some quick and > > > dirty hack in iijppp to make it work. > > [.....] > > > This should be relatively easy to implement. Opinions ? > > > I'd tend to implement some sort of half-duplex protocol layer at the > > ``struct physical'' layer in the new ppp (MP branch).... some > > relatively simple ``I've got control 'till I hand it over to you'' > > approach. > > > > It may even be useful to build something like that into the kernel > > - say as a line discipline. I haven't searched the rfcs.... The port appears as a simple serial device on most machines; and works just fine with things like a Psion 3, 5 and some of their NFS like hacks. The 'real' thing is on http://www.irda.org; a complete 5 layer protocol which seems to re-invent some of the IP, AppleTalk and i2c work. I've started doing some of the bottom layers; but found (about a year ago) that the six IRda compliant devices I had access already diverged at this bottom layer; study-ing the manual reveald that they where IRda SIR physical layer compliant; but not much above (i.e. IrLAP). With the only two exceptions of the Psion and the HP5 laser printer. At this time there was no public domain source/reference implementations available at all. Perhaps this should be re-visited. Anyone is welcome to the bits of source. Dw. > i think irda is more like a protocol (or perhaps a bus) than a line > discipline. In Windows at least, the driver offers you 'virtual' > COM and LPT ports running on the infrared bus. > If someone has the time not to write the code, but to suggest a good > way (from the architectural point of view) to add IrDA support, > that would be great. > in my case, i was looking for some simple hack, since i wouldn't have > much time to implement it. > > cheers > luigi > -----------------------------+-------------------------------------- > Luigi Rizzo | Dip. di Ingegneria dell'Informazione > email: luigi@iet.unipi.it | Universita' di Pisa > tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) > fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ > _____________________________|______________________________________ > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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