atom feed13 messages in org.freebsd.freebsd-hackersRe: USB support for new HP printers?
FromSent OnAttachments
John NielsenAug 25, 2002 10:35 pm 
Marco MolteniAug 26, 2002 1:51 am 
John NielsenAug 26, 2002 3:28 am 
Terry LambertAug 26, 2002 3:53 am 
Marco MolteniAug 26, 2002 4:46 am 
Mikko TyöläjärviAug 26, 2002 8:28 am 
Ulf ZimmermannAug 26, 2002 9:40 am 
Don LewisAug 26, 2002 3:33 pm 
Terry LambertAug 26, 2002 4:00 pm 
Bernd WalterDec 2, 2002 4:13 am 
John NielsenDec 2, 2002 11:35 am 
Dag-Erling SmorgravDec 4, 2002 1:06 pm 
Dag-Erling SmorgravDec 4, 2002 7:22 pm.diff
Subject:Re: USB support for new HP printers?
From:Don Lewis (dl-f@catspoiler.org)
Date:Aug 26, 2002 3:33:38 pm
List:org.freebsd.freebsd-hackers

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 :-(

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