calibration_tool.sh

#!/bin/bash
# Function: modify the configuration of touch screen's Calibrator.
# Author: Jacky.li
# Date: 2017-04-26
#
# clear screen.
clear
install_basic_package(){
  echo -n "Updating yours system and installing basic_packages,please wait..."
  sudo apt-get update 
  sudo apt-get install -y dialog
}

#Install some packages for touch screen calibration.
install_packages(){
  echo -e "\033[32mInstall Calibration packages,Please wait...\033[0m"
  for x in xinput-calibrator xserver-xorg-input-evdev libx11-dev libxext-dev x11proto-input-dev evtest dh-autoreconf libts-bin libxi-dev
     do
        sudo apt-get -y install $x
     done
}

# Funciton greeting.
greeting(){
dialog --backtitle "GeeekPi Touch Screen Calibrator Configure Panel" \
--msgbox "Welcome to GeeekPi Touch Screen Calibrator Configure Panel, please select your screen's Calibrator and press OK to continue.It supports 5inch 800x480 GPIO Touch Screen, 7inch 1024x600 touch screen, more information please access http://wiki.52pi.com/. Thanks" \
20 80 --begin 20 10
}

# Function yesno
yesno(){
dialog --backtitle "GeeekPi Touch Screen Calibrator Configure Panel" \
--title "Configure /boot/config.txt file" \
--clear \
--yesno "Do you agree to modify /boot/config.txt file?" 20 80
result=$?
if [ $result -eq 0 ]; then
  change_Calibrator;
elif [ $result -eq 255 ]; then
 exit 255;
fi
}

# do calibration.
calibrate(){
  install_packages
  sudo mv /usr/share/X11/xorg.conf.d/10-evdev.conf /usr/share/X11/xorg.conf.d/45-evdev.conf
  export DISPLAY=:0.0
  if [ -f /etc/X11/xorg.conf.d/99-calibration.conf ]; then
    sudo rm /etc/X11/xorg.conf.d/99-calibration.conf
  fi
  xinput_calibrator > /tmp/touch.conf
  res=$?
  if [ $? -eq 0 ]; then
    sudo sh -c "sed '1,7d' /tmp/touch.conf >  /etc/X11/xorg.conf.d/99-calibration.conf"
    export -n DISPLAY
  else
    echo "The calibration process does not finished properly, please try again!" 
    sudo bash /home/pi/lcd-config/calibration_tool.sh
  fi
}

#Define a function to setup.
change_Calibrator(){
dialog --clear --backtitle "GeeekPi Touch Screen Calibrator Configure Panel" \
--title "Calibrator select" \
--radiolist "Please select Calibrator of your screen" 20 80 30 R1 "5inch 800x480 GPIO Touch Screen" on R2 "7inch 800x480 Touch Screen" off R3 "7inch 1024x600 Touch Screen" off 2>.select
RES_NUM=$(cat .select)
case $RES_NUM in
R1)
  sudo sed -i '/^#.*framebuffer.*/s/^#//' /boot/config.txt
  sudo sed -i '/^framebuffer_width.*/s/framebuffer_width.*/framebuffer_width=800/' /boot/config.txt
  sudo sed -i '/^framebuffer_height.*/s/framebuffer_height.*/framebuffer_height=480/' /boot/config.txt
  sudo sed -i '/hdmi_force_hotplug/s/^#//' /boot/config.txt
  sudo sed -i '/hdmi_group.*/d' /boot/config.txt
  sudo sed -i '/hdmi_mode.*/d' /boot/config.txt
  sudo sed -i '/hdmi_cvt.*/d' /boot/config.txt
  sudo sed -i '/device_tree.*/d' /boot/config.txt 
  sudo sed -i '/dtoverlay=ads7846.*/d' /boot/config.txt
  sudo sed -i '/hdmi_force/a\hdmi_group=2' /boot/config.txt
  sudo sed -i '/hdmi_force/a\hdmi_mode=87' /boot/config.txt
  sudo sed -i '/hdmi_force/a\hdmi_cvt 800 480 60 3 0 0 0' /boot/config.txt
  sudo sed -i '/hdmi_group/a\device_tree=bcm2710-rpi-3-b.dtb' /boot/config.txt
  sudo sed -i '/device_tree=.*/a\dtoverlay=ads7846,penirq=22,speed=100000,xohms=150' /boot/config.txt
  sudo sed -i '/^#dtparam=spi.*/s/#//' /boot/config.txt 
  calibrate
   ;;
R2)
  sudo sed -i '/^#.*framebuffer.*/s/^#//' /boot/config.txt
  sudo sed -i '/^framebuffer_width.*/s/framebuffer_width.*/framebuffer_width=800/' /boot/config.txt
  sudo sed -i '/^framebuffer_height.*/s/framebuffer_height.*/framebuffer_height=480/' /boot/config.txt
  sudo sed -i '/hdmi_force_hotplug/s/^#//' /boot/config.txt
  sudo sed -i '/hdmi_group.*/d' /boot/config.txt
  sudo sed -i '/hdmi_mode.*/d' /boot/config.txt
  sudo sed -i '/hdmi_cvt.*/d' /boot/config.txt
  sudo sed -i '/hdmi_force/a\hdmi_group=2' /boot/config.txt
  sudo sed -i '/hdmi_force/a\hdmi_mode=87' /boot/config.txt
  sudo sed -i '/hdmi_force/a\hdmi_cvt 800 480 60 3 0 0 0' /boot/config.txt
  calibrate
     ;;
R3) 
  sudo sed -i '/^framebuffer_width.*/s/framebuffer_width.*/framebuffer_width=1024/' /boot/config.txt
  sudo sed -i '/^framebuffer_height.*/s/framebuffer_height.*/framebuffer_height=600/' /boot/config.txt
  calibrate
    ;; 
*)
exit 255
esac
}

#Display the configuration of /boot/config.txt file.
show_config_details(){
dialog --backtitle "GeeekPi Touch Screen Calibrator Configure Panel" --textbox "/boot/config.txt" 20 80
}

#Clear the screen buffer when exit the script.
clear_window(){
dialog --msgbox "Configuration is compelete!" 20 80 --begin 20 10 --yesno "Do you want to reboot your system?" 20 60
if [ $? -eq 0 ];then
   sudo sync && sudo reboot
elif [ $? -eq 255 ];then
   exit 255
fi
dialog --clear
}
# Call greeting and yesno,when it's done, clear all the temp files.
install_basic_package
greeting
yesno
show_config_details
sudo rm -rf .select
sudo rm -rf /home/pi/__MAC*
sudo rm -rf /home/pi/Edid.*
clear_window
clear
##End of file##