Hello, I am trying to also use the BeagleBone ADC along with an LCD screen that has touch functionality. I've decided that the touch functionality isn't important and would rather disable it to give me full access to the internal ADC. The screen is the 4DCape-43T. I would like a little bit of guidance trying to alter the device tree for the LCD to disable the touch functionality. Where is the device tree located for the display? If anyone knows the exact code to change, that would be welcomed advice, also. I am a little inexperienced with the BeagleBone Black, so I'm a little confused about how to do this. It would be a life saver if anyone could help!
Thanks, Steven On Monday, July 15, 2013 5:58:53 AM UTC-5, Charles Steinkuehler wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 7/15/2013 5:42 AM, Will Kostelecky wrote: > > Revisiting this topic...is there any way to disable the touch > > screen drivers for the LCD display thus rendering the AIN pins > > accessable (though reducing the user input to buttons)? Getting > > an external ADC to work is looking to be non trivial. > > You can play with the device tree for the LCD panel and remove the ADC > bits. You should also be able to make a custom device tree that > supports the touch screen *AND* reading the other three inputs, but > this might involve tweaking some driver code. > > ...reviewing the device tree files for the lcd3 and the iio analog > "helper", it looks like you should be able to pretty easily remove the > touchscreen parts from the LCD overlay and roll them into a separate > analog overlay (or add your required analog bits to a custom LCD > overlay), but you'll probably want to review the actual driver code > and make sure it's not doing something stupid. > > - -- > Charles Steinkuehler > cha...@steinkuehler.net <javascript:> > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.11 (MingW32) > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iEYEARECAAYFAlHj1e0ACgkQLywbqEHdNFy5ZwCgqFmzFyVrS0VXbZys3bh7orip > hu4AoOHd5eVaFeSm2vzE4Y7uMdKxDSaZ > =oQST > -----END PGP SIGNATURE----- > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
