[mythtv-users] LIRC and IR receiver from irblaster.info

[Steve Wilson]

--- Harry Devine <lifter89 at comcast.net> wrote:

> Steve Wilson wrote:
> > --- Harry Devine <lifter89 at comcast.net> wrote:
> >
> >   
> >> Nick Morrott wrote:
> >>     
> >>> On 29/03/2008, Harry Devine
> <lifter89 at comcast.net>
> >>>       
> >> wrote:
> >>     
> >>>   
> >>>       
> >>>> I have an IR receiver from irblaster.info that
> I
> >>>>         
> >> had working on my old
> >>     
> >>>>  FC6/0.20.2 installation.  However, since I
> >>>>         
> >> rebuilt my box to Fedora 8
> >>     
> >>>>  x86_64 and Myth 0.21, I can't seem to figure
> out
> >>>>         
> >> how to configure LIRC
> >>     
> >>>>  for it.  I saved off my lircd.conf and lircrc
> >>>>         
> >> files from my initial
> >>     
> >>>>  installation and put them back where they
> >>>>         
> >> belong, but when I start the
> >>     
> >>>>  lircd service, it fails almost immediately
> >>>>         
> >> saying (in /var/log/messages)
> >>     
> >>>>  "could not get file information for
> /dev/lirc",
> >>>>         
> >> then "default_init(): No
> >>     
> >>>>  such file or directory".
> >>>>     
> >>>>         
> >>> This error is frequently caused by 2 issues:
> >>>
> >>> i) not having the LIRC modules (lirc_serial and
> >>>       
> >> lirc_dev in your case)
> >>     
> >>> loaded/installed before starting lircd, in which
> >>>       
> >> case
> >>     
> >>> # modprobe lirc_serial
> >>>   
> >>>       
> >> OK, when I do this, I get: "FATAL: Error
> inserting
> >> lirc_serial 
> >>
> >>     
> >
>
(/lib/modules/2.6.24.3-34.fc8/updates/drivers/lirc/lirc_serial.ko):
> >   
> >> Device or resource busy"  Also, I have the
> following
> >> lirc modules 
> >> installed on my system (via rpm -qa | grep lirc):
> >>
> >>
> lirc-kmdl-2.6.24.3-34.fc8-0.8.3-74_cvs20080314.fc8
> >> lirc-0.8.3-74_cvs20080314.fc8
> >> lirc-devices-0.8-4.fc8
> >> lirc-lib-0.8.3-74_cvs20080314.fc8
> >>
> >>     
> >>> should sort this out, if the loadable modules
> are
> >>>       
> >> installed. You
> >>     
> >>> should also make sure you have either in-kernel
> >>>       
> >> support for these LIRC
> >>     
> >>> devices (if using a very recent kernel) or the
> >>>       
> >> correct LIRC kernel
> >>     
> >>> modules installed on your system.
> >>>
> >>> ii) your installation has created /dev/lirc0 but
> >>>       
> >> not /dev/lirc
> >>     
> >>> Some software looks specifically for /dev/lirc
> >>>       
> >> instead of /dev/lirc0.
> >>     
> >>> Other software (like lircd) can be given the
> >>>       
> >> correct device to use as
> >>     
> >>> a startup parameter. The naming of these LIRC
> >>>       
> >> devices (/dev/lirc is
> >>     
> >>> usually created as a symlink to the 'real'
> device
> >>>       
> >> /dev/lirc0) is
> >>     
> >>> commonly controlled via a udev rule for LIRC.
> >>>
> >>>   
> >>>       
> >> The only device that I have under /dev is
> >> /dev/lircd, so based on what 
> >> you're saying, this isn't correct, right?  How
> can I
> >> make the device 
> >> correct?
> >>
> >> Thanks for the help!
> >> Harry
> >>
> >> _______________________________________________
> >> mythtv-users mailing list
> >> mythtv-users at mythtv.org
> >>
> >>     
> >
>
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >   
> >
> > Are you setting the serial port to Uart none in
> your
> > modprobe.conf? If you don't do this, the device
> will
> > come up as busy.
> >
> > Look at this link for help.
> >
> > http://www.htpcug.com/blaster.htm
> >
> >
> >      
>
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> > _______________________________________________
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> > mythtv-users at mythtv.org
> >
>
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> >
> >   
> I haven't had a chance to look at this before now,
> but I just read that 
> link over.   Before I go ahead with step 3 (the only
> part that I need, 
> from what I can gather), I wanted to make sure I had
> a good 
> understanding of it.  If I "ls -l /dev/lir*", I get
> /dev/lircd and 
> nothing else.  So,  from what I read there, the
> first thinng going on is 
> 2 LIRC devices being setup.  Can I assume that I
> only need the first 
> line since I only have/need 1?
> 
> Second, in modprobe.conf, I see that COM1 is being
> setup and installed, 
> but I don't really understand what the major numbers
> mean.  Actually, I 
> understand what major and minor devices are, but I'm
> not sure if 61 
> should stay as 61, or does the device # need to be
> something else?
> 
> I was going to try and make those changes and see
> what happened, but 
> wanted to get those gray areas cleared up before I
> did.
> 
> Thanks,
> Harry
> 
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
>
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> 

I'm not really sure what the 61 refers to but since it
works for me I never really looked into the nuts and
bolts of it. The way I take it is the lines in the
modprobe build the device node and the lines in the
rc.local install the modules and start lirc based on
the device nodes built at modprobe time. I'd probably
change the serial alias to 61-0 and change the
associated lines in rc.local to lirc0.


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