[mythtv-users] Homebrew Serial Receiver Problems

Jeremy Gillick myth at mozmonkey.com
Tue Feb 27 07:07:07 UTC 2007


That did it, the serial receiver is working perfectly now.  Also 
/etc/modules and /etc/modprobe.d/aliases were still referencing  
'lirc_i2c' instead of 'lirc_serial'.  And lastly I needed to update 
/etc/modprobe.conf based on this thread: 
http://www.gossamer-threads.com/lists/mythtv/users/154688?search_string=missing%20%2Fdev%2Flirc;#154688 
(http://tinyurl.com/2eyrvt).

Thanks so much for your information, it helped set me down the right path.

- Jeremy

John wrote:
> I could be wrong but I don't believe the serial port
> has a true power source coming from one of the pins so
> you probably won't get a steady voltage coming from
> any of the pins.
>
> I built a homebrew receiver but I used the USB port so
> I'm somewhat familiar with this. First of all, I'd
> reboot and do a #setserial -g /dev/ttyS* to make sure
> the port you're setting off is truly the ttyS0. Then
> once that looks good, I'd do a 
>
> #cd /dev/lirc
> #ls -asl
>
> You shouldn't have anything since you haven't
> modprobe'd yet.
>
> with the device plugged in do a modprobe lirc_serial
> the do a #ls -asl to see what's created based on your
> post it should be /dev/lirc/0 make sure this is
> correct.
>
> Then start lircd. I'd start it this way
>
> lircd --device=/dev/lirc/0 --output=/dev/lircd
>
> make sure the lircd output device was created then
> instead of using mode2 I'd use xmode2
>
> #xmode2 -d /dev/lircd
>
> push some buttons on any IR remote and you should see
> the waveform.
>
>
>  
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