Date: Mon, 26 Aug 2002 15:34:00 -0700 (PDT) From: Don Lewis <dl-freebsd@catspoiler.org> To: mikko@dynas.se Cc: tlambert2@mindspring.com, john@jnielsen.net, molter@tin.it, freebsd-hackers@FreeBSD.ORG Subject: Re: USB support for new HP printers? Message-ID: <200208262234.g7QMY0wr050558@gw.catspoiler.org> In-Reply-To: <20020826082508.X356-100000@atlas.home>
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On 26 Aug, Mikko Työläjärvi wrote: > On Mon, 26 Aug 2002, Terry Lambert wrote: > >> John Nielsen wrote: >> > "FreeBSD, NetBSD, and OpenBSD are not yet supported in USB mode, due to >> > missing functionality in the kernel "ulpt" driver (bidirectional I/O, >> > device ID retrieval, switching to 7/1/3, and HP channel-change-request)." >> >> >> I'm pretty sure that bidirectional I/O is supported, or there >> would be no network devices. > > [...] > > Though the USB stack handles bi-directional communication, ulpt does not: > > Static struct cdevsw ulpt_cdevsw = { > /* open */ ulptopen, > /* close */ ulptclose, > /* read */ noread, <---- ! > ... I'd like to have bi-directional communication support in the ulpt driver for my Epson ink jet printer so that I could use the utilities to check the ink levels and align the nozzles. This feature is on the ToDo list on the FreeBSD USB project page. I looked at the existing driver code a while back, but that's as far as I got :-( To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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