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Messages - mhall

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1
Graphic LCDs / Re: NH7C working solution for Debian 8.7
« on: January 29, 2018, 05:15:54 AM »
Update: dts was compiled using the instructions on the https://github.com/beagleboard/bb.org-overlays/blob/master/readme.md
sudo apt update ; sudo apt install bb-cape-overlays
*** No core update as I already used the latest version from https://debian.beagleboard.org/images/bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img.xz ***
cd /opt/scripts/tools
git pull
git clone https://github.com/beagleboard/bb.org-overlays
cd ./bb.org-overlays
./install.sh
sudo reboot

But this leaves me still with half a screen and no GPIO pins mapped? 

2
Graphic LCDs / NH7C working solution for Debian 8.7
« on: January 28, 2018, 10:37:41 AM »
Has anyone got this to work? I am getting a bit desparate finding a solution.
The display works well on the Debian 9.1 LXQT, nice display and touch works well. Also able to rotate both screen and touch to portrait mode.

The problem is that the GPIO ports are not "mapped" and the Adafruit_BBIO library can't be used. So reverted back to Debian 8.7 LXQT where the BBIO library works but now can't get the LCD to work.

Compiling the BB-BONE-NH7C-01-A0.dts gives an error, can't parse the tree. DTC version 1.4.1 .

We really like to use this screen in our product, but need to have a workable solution.

Any help is very much appreciated.

gr M

3
Evaluation Tools / Re: NHD-7.0CTP-CAPE-N no picture
« on: January 24, 2018, 02:16:52 AM »
And for the dummies like me, a link how to compile into an dtbo :
https://learn.adafruit.com/introduction-to-the-beaglebone-black-device-tree/compiling-an-overlay

By the way, the image 9.1 LXQT has got the dtbo file in /sys/firmware, not sure if you can just copy it.

@Newhaven: It would be nice as many people still work with 8.7 LXQT to have a description how to get the LCD to work. 

4
Evaluation Tools / Re: NHD-7.0CTP-CAPE use touch screen in portrait mode?
« on: January 24, 2018, 02:08:05 AM »
Hi Arnie,

Running Debian 9.1 on BB Black , I found the same as you. But if you add the TransformatinMatrix option it does rotate the Touch.
I found this solution in the past for the RPi3.  This transformation works well for CW rotation.
 
For BeagleBone TourchScreen rotation : add or change this 40-libinput.conf file (/usr/share/X11/xorg.conf.d/40-....)

Section "InputClass"
        Identifier "libinput touchscreen catchall"
        MatchIsTouchscreen "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
#       Option "SwapAxes" "true"
#       Option "RotationAngle" "90.0"
        Option "TransformationMatrix" "0 1 0 -1 0 1 0 0 1"
EndSection

Hope it helps.

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