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How to modify the display orientation-CTP (En)

From LCD wiki
语言选择(Language): 中文 EN

This method is only suitable for HDMI capacitive screen, not suitable for GPIO resistive screen

How to rotate display direction:

1. Open the “config.txt” file (the “config.txt” file is located in /boot):

sudo nano /boot/config.txt

2.Add the statement in the “config.txt” file, press Ctrl+X to exit, press Y to save.

display_rotate=1        #0: 0; 1: 90; 2: 180; 3: 270

3. Restart the Raspberry Pi after saving.

sudo reboot

How to rotate Touch direction:

在进行显示旋转后,需要对触摸做出修改,否则不能与显示对应。

1.   安装libinput

sudo apt-get install xserver-xorg-input-libinput

2.   在/etc/X11/下创建xorg.conf.d目录 (如果该目录已存在,则直接进行第3步)

sudo mkdir /etc/X11/xorg.conf.d

3.    复制40-libinput-conf 文件到刚刚创建的目录下

sudo cp /usr/share/X11/xorg.conf.d/40-libinput.conf /etc/X11/xorg.conf.d/

4.    编辑/etc/X11/xorg.conf.d/40-libinput.conf

sudo nano /etc/X11/xorg.conf.d/40-libinput.conf

找到 touchscreen的部分,在里面添加以下语句,然后按Ctrl+X键退出, 按Y键确定保存即可

Option "CalibrationMatrix" "0 1 0 -1 0 1 0 0 1"

例如:

450x450像素

5. 重启树莓派

sudo reboot

完成以上步骤即可进行90度旋转。

注:

0 度旋转对应参数:  Option "CalibrationMatrix" "1 0 0 0 1 0 0 0 1"

90 度旋转对应参数:  Option "CalibrationMatrix" "0 1 0 -1 0 1 0 0 1"

180度旋转对应参数: Option "CalibrationMatrix" "-1 0 1 0 -1 1 0 0 1"

270度旋转对应参数: Option "CalibrationMatrix" "0 -1 1 1 0 0 0 0 1"