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--- en:c1_tft_touch [2015/05/22 13:03]
odroid [Test your Touchscreen]
+++ en:c1_tft_touch [2017/07/26 15:53] (current)
john1117 [TSLIB Calibration]
@@ Line 1: / Line 1: @@
+==== Test your Touchscreen ====
+Create a new udev file
+  sudo vi /etc/udev/rules.d/95-ads7846.rules
+and then, add this lines and save it\\
+  SUBSYSTEM=="input", ATTRS{name}=="ADS7846 Touchscreen", ENV{DEVNAME}=="*event*", SYMLINK+="input/touchscreen"
+Load SPI and TS drivers.
+  sudo modprobe spicc
+  sudo modprobe -r ads7846
+  sudo modprobe ads7846
+Now you can see this node.
+  ls /dev/input/touchscreen
+<wrap hide>
+Install the event test and touchscreen library
+  sudo apt-get install evtest libts-bin
+</wrap>
+Install the event test and touchscreen library
+  sudo apt-get install evtest
+Now you can use some tools such as sudo evtest /dev/input/touchscreen which will let you see touchscreen events in real time, press on the touchscreen to see the reports.
+  sudo evtest /dev/input/touchscreen
+<wrap hide>
+==== TSLIB Calibration ====
+Run startx
+  sudo startx &
+Run ts_calibrate on /dev/fb2
+  sudo TSLIB_FBDEVICE=/dev/fb2 TSLIB_TSDEVICE=/dev/input/touchscreen ts_calibrate
+Follow the directions on the screen, touching each point.\\
+Then, you can run following command.
+  sudo TSLIB_FBDEVICE=/dev/fb2 TSLIB_TSDEVICE=/dev/input/touchscreen ts_test
+</wrap>
+==== X11 Calibration ====
+. The xinput-calibrator pakage download
+  sudo apt-get install xinput-calibrator
+. Remove old calibration data.
+  sudo rm /etc/X11/xorg.conf.d/99-calibration.conf
+. Run calibrator\\
+You need to check DISPLAY=:N.0
+  sudo FRAMEBUFFER=/dev/fb2 startx &
+  sudo DISPLAY=:0.0 xinput_calibrator
+Follow the directions on your screen.\\
+then, you will get something like\\
+{{:en:c1:xinput_calibrator.png?500|}}\\
+Copy to "/etc/X11/xorg.conf.d/99-calibration.conf"
+  sudo mkdir /etc/X11/xorg.conf.d/
+  sudo vi /etc/X11/xorg.conf.d/99-calibration.conf
+. Reboot
+  sudo reboot