[Resolved]Rotate Screen

[aq]

Hi. I’m trying to figure out how to rotate the X-Window display but I’m not sure where the configurations are. Could someone explain how?

Cheers.

[Mark Williams]

Rotating the display on PiScreen to portrait mode can be done within hardware;

Open /etc/modules for editing

Comment out this line by placing a ‘#’ in front of ‘flexfb’

flexfb  width=320  height=480  regwidth=16 init=-1,0xb0,0x0,-1,0x11,-2,250,-1,0x3A,0x55,-1,0x36,0x28,-1,0xC2,0x44,-1,0xC5,0x00,0x00,0x0,0x0,-1,0xE0,0x0F,0x1F,0x1C,0x0C,0x0F,0x08,0x48,0x98,0x37,0x0A,0x13,0x04,0x11,0x0D,0x00,-1,0xE1,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0xE2,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0x11,-1,0X29,-3

And add this line in below

flexfb  width=480  height=320  regwidth=16 init=-1,0xb0,0x0,-1,0x11,-2,250,-1,0x3A,0x55,-1,0x36,0x48,-1,0xC2,0x44,-1,0xC5,0x00,0x00,0x0,0x0,-1,0xE0,0x0F,0x1F,0x1C,0x0C,0x0F,0x08,0x48,0x98,0x37,0x0A,0x13,0x04,0x11,0x0D,0x00,-1,0xE1,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0xE2,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0x11,-1,0X29,-3

Now reboot.

If you want to change it back to landscape, un-comment the first line and comment out the second line.

If you rotate the display on the TFT, you will also need to rotate the touchscreen.

If you havent already done so, install xinput.

pi@raspberrypi ~ $ sudo apt-get install xinput -y

Open up the X init script

pi@raspberrypi ~ $ sudo nano /etc/X11/xinit/xinitrc

And add these lines;

DISPLAY=:0 xinput --set-prop 'ADS7846 Touchscreen' 'Evdev Axes Swap' 1
DISPLAY=:0 xinput --set-prop 'ADS7846 Touchscreen' 'Evdev Axis Inversion' 1 1

before;

. /etc/X11/Xsession

You may need to change the values at the end of the each line;

Evdev Axes Swap
Swap X & Y
1 for yes and 0 for no
Evdev Axis Inversion
Swap the direction on the X or Y plane.
1 for yes and 0 for no. A number is needed for each plane

You may also need to re-calibrate the touch screen for X windows. This can be done by deleting the file below and then rebooting;

pi@raspberrypi ~ $ sudo rm /etc/pointercal.xinput

Mark --OzzMaker.com --

[aq]

Hi Mark,

Thank you for the quick reply. I wanted it in landscape mode but flipped 180-deg. Sorry I didn’t make that clear in the previous post.

[Mark Williams]

okay.
To flip it 180 degrees;

pi@raspberrypi ~ $ sudo nano /etc/modules

flexfb width=320 height=480 regwidth=16 init=-1,0xb0,0x0,-1,0x11,-2,250,-1,0x3A,0x55,-1,0x36,0xE8,-1,0xC2,0x44,-1,0xC5,0x00,0x00,0x0,0x0,-1,0xE0,0x0F,0x1F,0x1C,0x0C,0x0F,0x08,0x48,0x98,0x37,0x0A,0x13,0x04,0x11,0x0D,0x00,-1,0xE1,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0xE2,0x0F,0x32,0x2E,0x0B,0x0D,0x05,0x47,0x75,0x37,0x06,0x10,0x03,0x24,0x20,0x00,-1,0x11,-1,0X29,-3

To match up touchscreen to new flipped display

pi@raspberrypi ~ $ sudo nano /etc/X11/xinit/xinitrc

and add;

 DISPLAY=:0 xinput --set-prop 'ADS7846 Touchscreen' 'Evdev Axis Inversion' 1 1

before;
. /etc/X11/Xsession

Mark --OzzMaker.com --

[aq]

Awesome 🙂 Thanks a lot.

[azimarev]

I see it made to FAQ

But in fact I cannot see it working. I have RPi 3 and Piscreen1, everything works but there is no “flexfb” line in /etc/modules to comment out. If I just add the new line, it has no effect.

Has something changed now? How can I rotate my screen to be in portrait mode?

[Mark Williams]

Rotating the display on PiScreen to portrait mode can be done by editing /boot/config.txt and adding the optional rotation parameter after the overlay statement

dtoverlay=piscreen2r,rotate=90
The values, 0, 90, 180, 270 are supported.

I have also update the FAQ page

Mark --OzzMaker.com --

[azimarev]

Great, I actually tried that first but for some reason it did not work, probably I used the wrong angle.

However, I cannot get the touchscreen to work properly. I figured out the values but it only works when I enter xinput commands in ssh, if I put it in the /etc/X11/xinit/xinitrc script, it does not work. Do you have any suggestions?

[Mark Williams]

how do you start X?
did you configure it from raspi-config?
If so, can you disable it and then see if the commands in xinitrc work when you start X from the command line

Mark --OzzMaker.com --

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