[mythtv-users] Recording LED almost working.

Shay - MythTV mythtv at highstyleweb.com
Thu Jun 10 17:08:31 EDT 2004


Very sweet.  I'm a big LED fan..  I actually asked about this feature a few 
months ago, but didn't have the enthusiasm to tackle it myself..

At 03:24 PM 6/10/2004, you wrote:
>This starts off on topic, but quickly wanders off, so appologies... :-)
>
>Through the magic of a soldering iron and some bits from Maplins, I've got 
>a parallel port powered LED.
>
>Using a script to fuser the video device (found on this here mailing list, 
>thankyou) I can tell when Myth is using the TV card.
>
>Using a simple C program off the web, I can sent 0/1 to my LED and turn it 
>off/on, when it's connected to my desktop PC.
>
>However, when I plug my creation into the parallel port of my mythtv 
>hosting Pundit, the weirdness begins....
>
>On the pundit, the LED (wired to data pin 0, physical pin 2) flickers and 
>flashes in sync with the HDD led during the boot process. Then once 
>booting has finished, the disk activity has finished, and we're at the 
>main myth menu, the LED continues to flicker away to itself.
>
>Something seems to be spewing stuff to the parallel port.
>
>I've tried..
>
>Checking fuser /dev/lp0 .. nothing is using it, apparently.
>Changing the bios settings on the parallel port from normal/EPP/ECP.
>Changing the port address of the parallel port
>removing/reloading the lp, paraport and paraport_pc modules
>echo'ing character to the /dev/lp0 device. Whilst this makes the flashing 
>dimmer (?huh) it still flashes and flickers
>
>Maybe it's a kernel thing? My desktop is on 2.6 and the pundit is on 2.4.
>
>Just throwing this out here in case someone has some other ideas?
>
>And, if it works, I can describe how to set up a working 'recording' LED :-)
>
>-Garry.
>
>
>
>
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