HyperPixel 4
I loaded the latest OctoPi image, did the basic config on OctoPrint to get it on the network, ran apt update and upgrade, , ran all the updates on OctoPrint to bring it up to v1.6.1 and then ran:
sudo apt install git
git clone https://github.com/pimoroni/hyperpixel4 -b pi4
cd hyperpixel4
sudo ./install.sh
sudo reboot now
Log back in and then run
sudo raspi-config
System Options > Boot/Auto Login and enabled B1 Console and B2 Console Autologin
Rebooted
cd /boot
sudo nano config.txt
Edit the bottom so it looks like this:
[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
**#dtoverlay=vc4-fkms-v3d**
max_framebuffers=2
**display_lcd_rotate=3**
[all]
#dtoverlay=vc4-fkms-v3d
# enable raspicam
start_x=1
gpu_mem=128
dtoverlay=hyperpixel4
enable_dpi_lcd=1
dpi_group=2
dpi_mode=87
dpi_output_format=0x7f216
dpi_timings=480 0 10 16 59 800 0 15 113 15 0 0 0 60 0 32000000 6
Save and reboot and the screen will now be orientated with the USB C port at the bottom. If you want the port at the top, then you need to set display_lcd_rotate=1
The TOUCH function will still be incorrect, but to correct this:
cd /usr/share/X11/xorg.conf.d
sudo nano 40-libinput.conf
Edit the section for the touchscreen - it is normally the second last section - by adding this line:
Section "InputClass"
Identifier "libinput touchscreen catchall"
MatchIsTouchscreen "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
**Option "TransformationMatrix" "0 -1 1 1 0 0 0 0 1"**
EndSection
Leave all the spaces.
Save and reboot and your touch screen should now be orientated correctly the and touch screen also calibrated correctly. If you went with the USB C port at the top, then you need to make the line Option "TransformationMatrix" "0 1 0 -1 0 1 0 0 1"
I do not claim credit for this solution. It's a combination of the following video and articles:
https://github.com/TxBillbr/octodash-hyperpixel-fix
https://www.youtube.com/watch?v=K0A-sIUBFfU&t=2015s
https://www.instructables.com/Rotate-Raspberry-Pi-Display-and-Touchscreen/
