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feature: for autostart on RPi, removed starter.py and directly call pevNoGui.py
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2 changed files with 1 additions and 84 deletions
83
starter.py
83
starter.py
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# https://noisefloor-net.blogspot.com/2015/10/systemd-timer-unter-raspbian.html
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# In /etc/systemd/system we need to create 2 files:
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# pevStarter.service
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# pevStarter.timer
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# cd /etc/systemd/system
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# sudo nano pevStarter.service
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# ... add content...
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# sudo nano pevStarter.timer
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# ... add content ...
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# Make executable:
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# sudo chmod +x pevStarter.*
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# start and enable the unit:
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# sudo systemctl start pevStarter.timer
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# sudo systemctl enable pevStarter.timer
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# https://gist.github.com/emxsys/a507f3cad928e66f6410e7ac28e2990f
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# View log:
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# journalctl --unit=pevStarter
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# sudo systemctl status pevStarter
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import subprocess
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import datetime
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from time import sleep
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def writeStartLog():
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file_object = open('/home/pi/myprogs/pyPlc/starterlog.txt', 'a')
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now = datetime.datetime.now()
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s = str(now)
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file_object.write("starter was started at " + s + "\n")
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file_object.close()
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def checking():
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file_object = open('/home/pi/myprogs/pyPlc/starterlog.txt', 'a')
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#file_object.write('hello\n')
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now = datetime.datetime.now()
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s = str(now)
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file_object.write("It is " + s + "\n")
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command = "ps"
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param1 = "axj"
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result = subprocess.run(
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[command, param1], capture_output=True, text=True)
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if (len(result.stderr)>0):
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strOut = "Error:" + result.stderr + "\n"
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else:
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strOut = result.stdout
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blRunning=False
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lines = strOut.split("\n")
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for line in lines:
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if (line.find("pevNoGui.py")>0):
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blRunning = True
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if (blRunning):
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file_object.write("its running\n")
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else:
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file_object.write("its NOT running. Trying to start...\n")
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#processvar = subprocess.Popen(["python", "/home/pi/myprogs/pyPlc/pevNoGui.py"])
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result = subprocess.run(["python", "/home/pi/myprogs/pyPlc/pevNoGui.py"])
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if (len(result.stderr)>0):
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strOut = "Error:" + result.stderr + "\n"
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else:
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strOut = ""
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strOut = "done\n"
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file_object.write(strOut)
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file_object.close()
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try:
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writeStartLog()
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while True:
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#print("Hello World")
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checking()
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sleep(10)
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except KeyboardInterrupt as e:
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print("Stopping...")
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@ -3,6 +3,6 @@
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date >> /home/pi/myprogs/pyPlc/test2.txt
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pwd >> /home/pi/myprogs/pyPlc/test2.txt
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cd /home/pi/myprogs/pyPlc/
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/usr/bin/python /home/pi/myprogs/pyPlc/starter.py
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/usr/bin/python /home/pi/myprogs/pyPlc/pevNoGui.py
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pwd >> /home/pi/myprogs/pyPlc/test2.txt
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date >> /home/pi/myprogs/pyPlc/test3.txt
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