Display Panel

Wegen zu vielen Problemen mit Wayland wird hier Bookworm mit X11 genutzt.

Das Hauptproblem ist, dass das Display beim Stromsparen einen nervigen Bildschirm anzeigt … “No Signal” …

• Command Line
  sudo apt update && sudo apt upgrade -y && sudo apt install -y git git-lfs silversearcher-ag wavemon hexedit sudoku tcpdump iptraf mc htop dcfldd nano usbutils openvpn ranger tldr ncdu can-utils multitail fd-find lsof x11vnc minicom joystick i2c-tools speedtest-cli iotop fio ir-keytable curl inxi lshw nala fzf duf && mkdir -p ~/.local/share && tldr -u
• UI Tools
  sudo apt update && sudo apt upgrade -y && sudo apt install -y flameshot terminator cutecom jstest-gtk xclip
• Nutzloses Zeug
  sudo apt autoremove -y modem* cups* avahi* triggerhappy* rpi-connect openvpn

• sudo raspi-config → Screen Blanking aus !
• Screensaver aus
  • mkdir -p /home/pi/.config/lxsession/LXDE-pi
  • cp /etc/xdg/lxsession/LXDE-pi/autostart /home/pi/.config/lxsession/LXDE-pi/autostart
  • nano /home/pi/.config/lxsession/LXDE-pi/autostart

    download

    @lxpanel --profile LXDE-pi
    @pcmanfm --desktop --profile LXDE-pi
    #@xscreensaver -no-splash
    @xset s off
    @xset -dpms

  • sudo apt remove xscreensaver
• Venv einrichten
  • sudo apt -y update && sudo apt-get install -y build-essential cmake make gcc pkg-config python3-dev python3-virtualenv libsystemd-dev libopenblas-dev
  • cd ~ && mkdir -p DisplayOnOff && cd DisplayOnOff
  • python -m venv . && source bin/activate
  • pip3 install --upgrade pip && pip3 install RPi.GPIO pynput smbus paho-mqtt psutil
• Compile VL53 Lib …
  • sudo apt-get install build-essential python-dev
  • cd ~
  • git clone https://github.com/pimoroni/VL53L0X_rasp_python.git
  • cd VL53L0X-python
  • make
  • VL53L0X.py in den Scriptordner kopieren …
• Tests starten …

• sudo apt install x11vnc
• für einen ersten Test kann man das verwenden
  x11vnc -usepw -forever -display :0

• Einrichtung als Dienst
• sudo x11vnc -storepasswd /etc/x11vnc.pass
• sudo nano /lib/systemd/system/x11vnc.service

• [Unit]
  Description=Start X11VNC
  After=multi-user.target
  
  [Service]
  Type=simple
  ExecStart=/usr/bin/x11vnc -display :0 -auth guess -forever -loop -noxdamage -repeat -rfbauth /etc/x11vnc.pass -rfbport 5900 -shared
  
  [Install]
  WantedBy=multi-user.target

• sudo systemctl enable x11vnc.service

• Sensor : VL53L0X

• Altes Script
  

  import sys
  import time
  import VL53L0X
  import os
  import subprocess
  import RPi.GPIO as GPIO
  from pynput import mouse
   
  def on_move(x, y):
      global Display_Last_Action
      print('Pointer moved to {0}'.format((x, y)))
      sys.stdout.flush()
      Display_Last_Action = time.time()
      print("Time %d" % (Display_Last_Action))
   
  def on_click(x, y, button, pressed):
      global Display_Last_Action
      print('{0} at {1}'.format('Pressed' if pressed else 'Released', (x, y)))
      sys.stdout.flush()
      Display_Last_Action = time.time()
      print("Time %d" % (Display_Last_Action))
   
  def on_scroll(x, y, dx, dy):
      global Display_Last_Action
      print('Scrolled {0} at {1}'.format('down' if dy < 0 else 'up', (x, y)))
      sys.stdout.flush()
      Display_Last_Action = time.time()
      print("Time %d" % (Display_Last_Action))
   
  def toggleOnOff():
      GPIO.output(36, GPIO.HIGH)
      time.sleep(0.4)
      GPIO.output(36, GPIO.LOW)
      print("Toggle Switch ....")
      sys.stdout.flush()
   
  listener = mouse.Listener(
      on_move=on_move,
      on_click=on_click,
      on_scroll=on_scroll)
  listener.start()
   
  # Last Time Event happend on Display 
  Display_Last_Action = time.time()
  Display_State       = True
  Display_Timeout_Sec = 180
   
  # RPi.GPIO Layout verwenden (wie Pin-Nummern)
  GPIO.setmode(GPIO.BOARD)
  # RuntimeWarning: This channel is already in use, continuing anyway.  Use GPIO.setwarnings(False) to disable warnings.
  GPIO.setwarnings(False)
   
  # Pin 36 (GPIO 16) auf Output setzen -> Display ON / OFF
  GPIO.setup(36, GPIO.OUT)
  # Pin 38 (GPIO 20) auf Output setzen -> Brightness +
  GPIO.setup(38, GPIO.OUT)
  # Pin 40 (GPIO 21) auf Output setzen -> Brightness -
  GPIO.setup(40, GPIO.OUT)
   
  # Create a VL53L0X object
  tof = VL53L0X.VL53L0X(i2c_bus=1,i2c_address=0x29)
  tof.open()
  tof.start_ranging(VL53L0X.Vl53l0xAccuracyMode.BETTER)
   
  while 1:
      # Distanz vom VL53L0X Sensor messen
      distance = tof.get_distance()
      #print("%d mm, %d cm" % (distance, (distance/10)))
   
      # Display ggf. abschalten 
      if time.time()-Display_Last_Action >= Display_Timeout_Sec:
          if Display_State == True:
              #subprocess.call("DISPLAY=:0 xset dpms force off", shell=True)
              toggleOnOff()
              Display_State = False
              print("Display wird abgeschaltet ...")
              sys.stdout.flush()
   
      # Abstand vom Sensor pruefen
      if distance < 900:
          print("DETECTED, %d cm , %d sec" % (distance/10, time.time()-Display_Last_Action ))
          sys.stdout.flush()
          Display_Last_Action = time.time()
          print("Time %d" % (Display_Last_Action))
   
      # Display ggf. wieder einschalten 
      if time.time()-Display_Last_Action < Display_Timeout_Sec:
          if Display_State == False:
              #subprocess.call("DISPLAY=:0 xset dpms force on", shell=True)
              toggleOnOff()
              Display_State = True
              print("Display wird eingeschaltet ...")
              sys.stdout.flush()
   
          # Display Einschalten
          #os.system('DISPLAY=:0 xdotool key "shift"')
          ###subprocess.call("DISPLAY=:0 xset s reset", shell=True)
          #subprocess.call("DISPLAY=:0 xset dpms force on", shell=True)
          #subprocess.call("DISPLAY=:0 xset dpms 120 120 120", shell=True)
   
      time.sleep(0.1)
   
  tof.stop_ranging()
  tof.close()

• Service
  

  pi@SHome-Display-VPN-DNS:/ $ cat lib/systemd/system/display.service
  [Unit]
  Description=Display Controller
   
  [Service]
  Environment=DISPLAY=:0
  Environment=XAUTHORITY=/home/pi/.Xauthority
  ExecStart=/usr/bin/python /home/pi/DisplayOn/MotionDetect.py
  Restart=always
  RestartSec=30s
  KillMode=process
  TimeoutSec=infinity
   
  [Install]
  WantedBy=graphical.target

• /etc/systemd/system/eth0fix.service

• [Unit]
  Description=100MBit Fix for eth0
  Requires=network.target
   
  [Service]
  ExecStart=/sbin/ethtool -s eth0 speed 100 duplex full autoneg on
  Type=oneshot
   
  [Install]
  WantedBy=multi-user.target\

pi@SHome-Display-VPN-DNS:~ $ cat chrome.sh 
#!/bin/sh -e
 
pfad="http://192.168.30.22:8082/vis/index.html?main#Home"
 
# Chromium ggf. beenden 
chromerunning=`ps aux | grep chromium |wc -l`
echo $chromerunning
 
if test $chromerunning -gt 1; then 
    echo "Beende alle Chromium Instanzen ..." 
    sudo killall /usr/lib/chromium-browser/chromium-browser-v7
    sleep 4
fi
 
# Chromium zurücksetzen
sed -i 's/"exited_cleanly":false/"exited_cleanly":true/' ~/.config/chromium/'Local State'
sed -i 's/"exited_cleanly":false/"exited_cleanly":true/; s/"exit_type":"[^"]\+"/"exit_type":"Normal"/' ~/.config/chromium/Default/Preferences
 
# Chromium starten
DISPLAY=:0 /usr/lib/chromium-browser/chromium-browser-v7 --touch-events=enabled --noerrdialogs --check-for-update-interval=31536000 &
 
# Chromium in Fullscreen
sleep 15
#WID=$(DISPLAY=:0 xdotool search --onlyvisible --class chromium|head -1)
#DISPLAY=:0 xdotool windowactivate ${WID}
#DISPLAY=:0 xdotool key F11
 
# An Display Position navigieren mit der Maus und Vollbild auslösen
DISPLAY=:0 /usr/bin/xdotool mousemove --sync 954 200 click 1
 
exit 0