Re: parallel port support in wine

Hi Martin,

Adding the local.rules file did fix the permissions problem but 
unfortunately the result is the same.  I think maybe the programmer 
application software uses a proprietary driver.  I had a similar problem 
with a different unit that uses USB and had to abandon it.  It seems 
easier to make the parallel port work rather than USB but I don't do 
that type of programming.

Any other ideas?

Best regards,
Fred


On 03/28/2013 08:51 AM, Martin Gregorie wrote:
> On Thu, 2013-03-28 at 00:39 -0700, Fred wrote:
>> Hello,
>>
>> I would like to use a logic device programmer that uses the parallel
>> port.  The application software runs well under wine (on Debian 6.0) but
>> it reports it can't find the programmer.  I have a link to the parallel
>> device: .wine/dosdevices/lpt1 ->  /dev/lp0.
>>
> What are the permissions and group assignments of /dev/lp0? On my Fedora
> 16 box it is owned by root and is in the lp group and has has no 'world'
> access permissions:
>
> crw-rw----  1 root lp       6,   0 Feb 19 16:59 lp0
>
> IOW, if /dev/lp0 has the same ownership and permissions as mine and the
> user where you're running the logic device programmer isn't a member of
> the lp group your programmer won't be able to access /dev/lp0. You have
> two options:
>
> 1) add the user to the lp group
> 2) change the permissions of /dev/lp0 so it has world read
>     and write permissions
>
> I've used option (2) to allow WINE programs to access my serial ports
> (/dev/ttyS[0-4] - I have five thanks to a multi-port serial adapter
> card), but you can only do this by adding a UDEV rule because modern
> kernels use UDEV device handling and this recreated the device files
> each time its booted. I added the file /etc/udev/rules.d/99-local.rules
> to me system:
>
> ============= 99-local.rules =================
> #
> # Give world read/write access to ttyS* and ttyUSB* serial devices
> #
> KERNEL=="tty[A-Z]*", GROUP="uucp", MODE="0666"
> ============= 99-local.rules =================
>
> so this should work for lp0 [caution: untested]
>
> ============= 99-local.rules =================
> #
> # Give world read/write access to lp0
> #
> KERNEL=="lp0", GROUP="lp", MODE="0666"
> ============= 99-local.rules =================
>
> Drop the file in place, reboot, and run 'ls -l /dev/lp0' to check that
> it had the right effect. If do the programmer should now find the
> parallel port.
>
> Martin
>
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