Date: Sat, 14 Jun 2014 20:16:33 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Matthias Apitz <guru@unixarea.de> Cc: freebsd-usb@freebsd.org Subject: Re: Fwd: USB to parallel for printer HP LaserJet 4mL Message-ID: <539C9181.10304@selasky.org> In-Reply-To: <20140614181138.GA1598@La-Habana> References: <20140601130025.GA2255@La-Habana> <538B6693.5010108@selasky.org> <20140601175846.GA2104@La-Habana> <538B6C4F.9050205@selasky.org> <20140602150802.GA1950@La-Habana> <538C9A83.7050606@selasky.org> <20140610054403.GA1589@La-Habana> <539964AB.1030909@selasky.org> <20140613184921.GA1748@La-Habana> <539BEE2E.9050108@selasky.org> <20140614181138.GA1598@La-Habana>
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On 06/14/14 20:11, Matthias Apitz wrote:
> El día Saturday, June 14, 2014 a las 08:39:42AM +0200, Hans Petter Selasky escribió:
>
>>> I can not get any use full traffic dump from them. Someone could point
>>> me to a working tool for Win7. I know, our list deals with FreeBSD
>>> software, but it is some kind of re-engineering why Win7 works with a
>>> device and FreeBSD does not :-)
>>>
>> You might be able to remove "ulpt" driver from the kernel config and
>> also "mv -i /boot/kernel/ulpt.ko /boot/kernel/ulpt.ko.old" and run Win7
>> from Virtualbox or a VM and see what happens. Then you can sniff the USB
>> traffic in the VM USB host.
>
> Hi,
> This is for administrative reasons not an option in my office and at
> home I do not have Win*.
>
> matthias
>
Ok, lets try to figure out the:
in sys/dev/usb/serial/ulpt.c try to comment out:
#if 0
if (sc->sc_fflags == 0)
usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]);
#endif
In function:
static void
ulpt_watchdog(void *arg)
{
struct ulpt_softc *sc = arg;
mtx_assert(&sc->sc_mtx, MA_OWNED);
/*
* Only read status while the device is not opened, due to
* possible hardware or firmware bug in some printers.
*/
if (sc->sc_fflags == 0)
usbd_transfer_start(sc->sc_xfer[ULPT_INTR_DT_RD]);
usb_callout_reset(&sc->sc_watchdog,
hz, &ulpt_watchdog, sc);
}
--HPS
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