Use of motion sensor?

[fugazzy]

I am using video-looper for quite a while now to display small videos on a TV as information monitor. Quite often no one is arround and the TV could be switched off. This is possible by using

TV On
echo on 0 | cec-client -s -d 1
TV off
echo standby 0 | cec-client -s -d 1

I would now like to use a motion sensor on the raspi gpio to switch the TV on and after a while off again.

Can that be done? Or can that be included into video-looper?

[tofuSCHNITZEL]

I would recommend you write a separate little py script that you run as a service that sends the cec commands and reads the motions sensor - the video could keep looping in the background - or you stop/start the looper via shell commands also from the py script. but currently this is outside the scope of the pi video looper. cheers,

[fugazzy]

I post my question here again, because this may be of interest for others also: I had some time to works on this again and I got it working fine if started from console. I am struggeling to get it done automatically. It starts always fine, but I cannot get it stopped if started through supervisor. Maybe someone here can give me a hint on a good start/stop script?

#!/usr/bin/python

#Bewegungsmelder ansteuern
#neue Methode ohne Polling

import RPi.GPIO as GPIO
import time
import datetime
import os
import subprocess
import syslog

print "BEWEGUNGSMELDER"
print ""

#Board Mode: Angabe der Pin-Nummer
GPIO.setmode(GPIO.BOARD)

#GPIO Pin definieren fuer den Dateneingang vom Sensor
PIR_GPIO = 16
#GPIO als "Input" festlegen
GPIO.setup(PIR_GPIO, GPIO.IN)

#Initialisierung
starttime = datetime.datetime.now()
endtime = starttime

def period(delta, pattern):
    d = {'d': delta.days}
    d['h'], rem = divmod(delta.seconds, 3600)
    d['m'], d['s'] = divmod(rem, 60)
    return pattern.format(**d)

def MOTION(PIR_GPIO):
    global starttime

    if GPIO.input(PIR_GPIO): 
      starttime = datetime.datetime.now()
      print  "%s - Bewegung erkannt" % time.ctime()
      syslog.syslog(" %s: Bewegung erkannt!" % time.ctime() )
      subprocess.Popen('/home/pi/tvon.sh', shell=True)
      #subprocess.Popen(/home/pi/tvwecken.sh', shell=True)
    else:
      endtime =  datetime.datetime.now()
      diff =  endtime - starttime
      diff = period(diff, "{h} Stunden, {m} Minuten, {s} Sekunden")
      print ("%s - Bewegungszeitraum abgelaufen! Zeitdifferenz: %s" % (time.ctime(), diff ))
      syslog.syslog("%s - Bewegungszeitraum abgelaufen! Zeitdifferenz: %s" % (time.ctime(), diff ))
      subprocess.Popen('/home/pi/tvoff.sh', shell=True)
      #subprocess.Popen(/home/pi/tvschlafen.sh', shell=True)
      print "%s - Warten auf Bewegung" % time.ctime()

#TV ausschalten / Schlafen legen bei Neustart
#subprocess.Popen('/home/pi/tvoff.sh', shell=True)
#subprocess.Popen('/home/pi/tvschlafen.sh', shell=True)

#VideoLooper starten
subprocess.Popen('/home/pi/vlstart.sh', shell=True)

print "%s - Start der Bewegungserkennung und VideoLooper" % time.ctime()
syslog.syslog("Start der Bewegungserkennung und VideoLooper")

try:
     GPIO.add_event_detect(PIR_GPIO, GPIO.BOTH, callback=MOTION)
     while 1:
          time.sleep(30)

except KeyboardInterrupt:
        GPIO.cleanup()
    print "%s - Stop der Bewegungserkennung und VideoLooper" % time.ctime()
    syslog.syslog("Stop der Bewegungserkennung und VideoLooper")
    #VideoLooper stoppen
    subprocess.Popen('/home/pi/vlstop.sh', shell=True)

vlstart.sh and vlstop.sh just contain:

sudo supervisorctl start video_looper
or
sudo supervisorctl stop video_looper

this my supervisor config:

#Supervisord configuration to run video looper at boot and
#ensure it runs continuously.
[program:pirvl]
command= /home/pi/pir-videolooper.py
directory = /home/pi
autostart=true
autorestart=unexpected
startsecs=5