Yeah, do we need to rebuild the kernel to remove the touch functionality? On Tuesday, April 8, 2014 12:20:23 PM UTC-3, [email protected] wrote: > > 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 >> [email protected] >> -----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 [email protected]. For more options, visit https://groups.google.com/d/optout.
