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1.sudo nano /boot/config.txt
2.在文件末尾加入
display_rotate=0
display_rotate=1 //90°
display_rotate=2 //180°
display_rotate=3 //270°
ctrl + o 保存文档 重启即可。
这个需要xinput
注:以下操作皆为SSH操作,所以每条指令前都加了DISPLAY=:0,如果本机操作删掉即可。
sudo apt-get install xinput
xinput --list
如果远程操作记得在命令前加DISPLAY=:0
得到以下信息:
pi@raspberrypi:~ $ xinput --list
⎡Virtual corepointer id=2 [masterpointer (3)]
⎜ ↳Virtual core XTESTpointer id=4 [slave pointer (2)]
⎜ ↳Silicon WorksMulti-touch SW4101C id=6 [slave pointer (2)]
⎣Virtual corekeyboard id=3 [master keyboard (2)]
↳Virtual core XTEST keyboard id=5 [slave keyboard (3)]
pi@raspberrypi:~ $
pi@raspberrypi:~ $ xinput --list-props 6
Device 'Silicon Works Multi-touch SW4101C':
DeviceEnabled (114): 1
CoordinateTransformation Matrix (115): 1.000000,0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinputCalibration Matrix (246): -1.000000,0.000000, 1.000000, 0.000000, -1.000000, 1.000000, 0.000000, 0.000000, 1.000000
libinputCalibration Matrix Default (247): 1.000000,0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinputSend Events Modes Available (248): 1,0
libinputSend Events Mode Enabled (249): 0, 0
libinputSend Events Mode Enabled Default (250): 0,0
DeviceNode (251): "/dev/input/event0"
DeviceProduct ID (252): 10685, 16641
查看/usr/share/X11/xorg.conf.d/目录下是否有40-libinput.conf这个文件。
无 则需要安装
sudo apt-get installxserver-xorg-input-libinput
,
一开始xorg.conf.d这个目录在/etc/X11可能没有,需要自己创建。
sudo mkdirxorg.conf.d
sudo cp/usr/share/X11/xorg.conf.d/40-libinput.conf /etc/X11/xorg.conf.d/
cd/etc/X11/xorg.conf.d/
sudo vim 40-libinput.conf
找到touchscreensection
Section"InputClass"
Identifier "libinput touchscreencatchall"
MatchIsTouchscreen "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
添加一行 Option "CalibrationMatrix" "-1 0 1 0 -1 1 0 0 1“
结果为
Section"InputClass"
Identifier "libinput touchscreencatchall"
Option "CalibrationMatrix" " -1 0 1 0 -1 1 0 0 1“
MatchIsTouchscreen "on"
MatchDevicePath "/dev/input/event*"
Driver "libinput"
EndSection
Complete the above steps to perform a 90degree rotation.
Note:
90 degree rotation:Option "CalibrationMatrix" "0 1 0 -1 0 1 0 0 1"
180 degree rotation:Option "CalibrationMatrix" "-1 0 1 0 -1 1 0 0 1"
270 degree rotation:Option "CalibrationMatrix" "0 -1 1 1 0 0 0 0 1"
pi@NTGAGE:~ $ DISPLAY=:0 xinput --list-props 7
Device 'WaveShare WaveShare Touchscreen':
Device Enabled (115): 1
Coordinate Transformation Matrix (116): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (240): 0
Device Accel Constant Deceleration (241): 1.000000
Device Accel Adaptive Deceleration (242): 1.000000
Device Accel Velocity Scaling (243): 10.000000
Device Product ID (244): 3823, 5
Device Node (245): "/dev/input/event3"
Evdev Axis Inversion (246): 0, 0
Evdev Axis Calibration (247): <no items>
Evdev Axes Swap (248): 0
Axis Labels (249): "Abs MT Position X" (267), "Abs MT Position Y" (268), "Abs MT Pressure" (269), "None" (0), "None" (0), "None" (0)
Button Labels (250): "Button Unknown" (233), "Button Unknown" (233), "Button Unknown" (233), "Button Wheel Up" (121), "Button Wheel Down" (122)
Evdev Scrolling Distance (251): 0, 0, 0
Evdev Middle Button Emulation (252): 0
Evdev Middle Button Timeout (253): 50
Evdev Third Button Emulation (254): 0
Evdev Third Button Emulation Timeout (255): 1000
Evdev Third Button Emulation Button (256): 3
Evdev Third Button Emulation Threshold (257): 20
Evdev Wheel Emulation (258): 0
Evdev Wheel Emulation Axes (259): 0, 0, 4, 5
Evdev Wheel Emulation Inertia (260): 10
Evdev Wheel Emulation Timeout (261): 200
Evdev Wheel Emulation Button (262): 4
Evdev Drag Lock Buttons (263): 0
这块屏幕正常显示和触摸的信息如上。
如果执行到这一步,发现并没有以上的Evdev等属性项,请跳转2.2。
现在需要达到的目的是在屏幕显示反转的同时,使得触摸也随显示翻转。
屏幕显示为翻转90度。/boot/config.txt设置为display_rotate=1
上述信息中Evdev Axis Inversion 项是每条轴的旋转设置项,后面第一个参数是x,第二个参数是y.
Evdev Axes Swap项对应的是两条轴的交换。
0为不翻转,1为翻转
例如。x轴原本是朝向右的,当把Evdev Axis Inversion的第一个参数
设置为1,即x轴朝向左。
4.旋转触摸的坐标轴
现在目的是要触摸旋转90度,从坐标轴理解:
即目的x轴正向为初始y轴的反向。目的y轴的正方向为初始x轴的正向。
1)所以先交换x、y轴
DISPLAY=:0 xinput --set-prop '7' 'Evdev Axes Swap' 1
2)然后反转y轴
DISPLAY=:0 xinput --set-prop '7' 'Evdev Axis Inversion' 0 1
这样即可完成触摸旋转90度。若要旋转其他角度,推理一下即可。
显示旋转修改之后需要重启。而触摸旋转不需要重启。
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