Fwd: USB to parallel for printer HP LaserJet 4mL

[Hans Petter Selasky]

On 06/16/14 08:50, Matthias Apitz wrote:
> El día Monday, June 16, 2014 a las 08:00:15AM +0200, Hans Petter Selasky escribió:
>
>> Hi,
>>
>> Can you also use only the no-reset version: /dev/unlpt0 ?
>>
>> Make sure device is power cycled first.
>
> Hi,
>
> I did
>
> - detached USB cable
> - power cycled device
> - wait until device ready
>
> # kldunload ulpt.ko
> # kldload modules/usb/ulpt/ulpt.ko
> # sysctl hw.usb.ulpt.debug=15
> hw.usb.ulpt.debug: 0 -> 15
>
> - now pluged in the USB cable
>
> # date > /dev/unlpt0
> ^C
> # date
> lunes, 16 de junio de 2014, 08:44:49 CEST
> #
>
> messages are attached; thx
>
> Jun 16 08:44:02 La-Habana root: Unknown USB device: vendor 0x0c45 product 0x62c0 bus uhub3
> Jun 16 08:44:02 La-Habana root: Unknown USB device: vendor 0x0c45 product 0x62c0 bus uhub3
> Jun 16 08:44:27 La-Habana kernel: ugen1.2: <Prlific Technology Inc.> at usbus1
> Jun 16 08:44:27 La-Habana kernel: ulpt_probe:
> Jun 16 08:44:27 La-Habana kernel: ulpt_probe:
> Jun 16 08:44:27 La-Habana kernel: ulpt_attach: sc=0xc596c580
> Jun 16 08:44:27 La-Habana kernel: ulpt0: <Prlific Technology Inc. IEEE-1284 Controller, class 0/0, rev 1.00/2.00, addr 2> on usbus1
> Jun 16 08:44:27 La-Habana kernel: ulpt_attach: setting alternate config number: 1
> Jun 16 08:44:27 La-Habana kernel: ulpt0: using bi-directional mode
> Jun 16 08:44:27 La-Habana kernel: ulpt_watchdog: debugging ulpt.c: ulpt_watchdog() skiped read status
> Jun 16 08:44:33 La-Habana last message repeated 6 times
> Jun 16 08:44:34 La-Habana kernel: ulpt_write_callback: state=0x0 actlen=0
> Jun 16 08:44:34 La-Habana kernel: ulpt_watchdog: debugging ulpt.c: ulpt_watchdog() skiped read status
> Jun 16 08:44:47 La-Habana last message repeated 13 times
> Jun 16 08:44:48 La-Habana kernel: ulpt0: at uhub1, port 1, addr 2 (disconnected)
> Jun 16 08:44:48 La-Habana kernel: ulpt_detach: sc=0xc596c580
> Jun 16 08:44:48 La-Habana kernel: ulpt_write_callback: state=0x2 actlen=0
> Jun 16 08:44:49 La-Habana kernel: ulpt_probe:
> Jun 16 08:44:49 La-Habana kernel: ulpt_probe:
> Jun 16 08:44:49 La-Habana kernel: ulpt_attach: sc=0xc5839880
> Jun 16 08:44:49 La-Habana kernel: ulpt0: <Prlific Technology Inc. IEEE-1284 Controller, class 0/0, rev 1.00/2.00, addr 2> on usbus1
> Jun 16 08:44:49 La-Habana kernel: ulpt_attach: setting alternate config number: 1
> Jun 16 08:44:49 La-Habana kernel: ulpt0: using bi-directional mode
> Jun 16 08:44:49 La-Habana kernel: ulpt_watchdog: debugging ulpt.c: ulpt_watchdog() skiped read status
> Jun 16 08:44:53 La-Habana last message repeated 4 times
> Jun 16 08:44:54 La-Habana kernel: ulpt_watchdog: debugging ulpt.c: ulpt_watchdog() skiped read status
>
> 	matthias
>

Hi,

If you disconnect the LPT port from the printer and repeat?

Is the device sufficiently powered?

--HPS