listen for shutdown

satfan · January 16, 2021 at 6:17 PM

Hi,

I wood like to ad a script which enables the posibility of a power button usage.

I found manauls to do that, but non of them worked at libreelec.

this are the script which should run:

As well the intallation script is not working.

Hope there is a way to add this simple funktionality to shutdown an restart the Pi with a shorting pin 5 and 6 (GPIO3 and GND)

Thx in advance

install:

Code

#! /bin/sh

set -e

cd "$(dirname "$0")/.."

echo "=> Installing shutdown listener...\n"
sudo cp listen-for-shutdown.py /usr/local/bin/
sudo chmod +x /usr/local/bin/listen-for-shutdown.py

echo "=> Starting shutdown listener...\n"
sudo cp listen-for-shutdown.sh /etc/init.d/
sudo chmod +x /etc/init.d/listen-for-shutdown.sh

sudo update-rc.d listen-for-shutdown.sh defaults
sudo /etc/init.d/listen-for-shutdown.sh start

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listen-for-shutdown.sh

Code

#! /bin/sh

### BEGIN INIT INFO
# Provides:          listen-for-shutdown.py
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
### END INIT INFO

# If you want a command to always run, put it here

# Carry out specific functions when asked to by the system
case "$1" in
  start)
    echo "Starting listen-for-shutdown.py"
    /usr/local/bin/listen-for-shutdown.py &
    ;;
  stop)
    echo "Stopping listen-for-shutdown.py"
    pkill -f /usr/local/bin/listen-for-shutdown.py
    ;;
  *)
    echo "Usage: /etc/init.d/listen-for-shutdown.sh {start|stop}"
    exit 1
    ;;
esac

exit 0

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listen-for-shutdown.py

Code

#!/usr/bin/env python


import RPi.GPIO as GPIO
import subprocess


GPIO.setmode(GPIO.BCM)
GPIO.setup(3, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.wait_for_edge(3, GPIO.FALLING)

subprocess.call(['shutdown', '-h', 'now'], shell=False)

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ghtester · January 16, 2021 at 9:32 PM

It seems to be a bit complex and won't work in LE without modifications for sure.

Forget that and try this instead: RE: Shutdown on single button press

Read carefully till the end as there are more options to try.

Mario77 · January 16, 2021 at 11:14 PM

shutdown.sh can't see anything strange..

Remove all the sudo commands from install.sh script..

You need to install rpi tools addon from libreelec repo..

I m not really good with python but try this it should work.. for shutdown.py

Code

#!/usr/bin/env python


import os
import signal
import sys
sys.path.append('/storage/.kodi/addons/virtual.rpi-tools/lib')
import RPi.GPIO as GPIO
import subprocess



GPIO.setmode(GPIO.BCM)
GPIO.setup(3, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.wait_for_edge(3, GPIO.FALLING)

subprocess.call(['shutdown', '-h', 'now'], shell=False)

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satfan · January 16, 2021 at 11:55 PM

That doesnt work.

I install the rpi tools, and it can be found at:

/storage/.kodi/addons/virtual.rpi-tools/lib

i get the following:

Code

LibreELEC:~/hyperion/bin #  ./listen-for-shutdown.sh start
Starting listen-for-shutdown.py
LibreELEC:~/hyperion/bin # Traceback (most recent call last):
  File "/storage/hyperion/bin/listen-for-shutdown.py", line 4, in <module>
    import RPi.GPIO as GPIO
ImportError: No module named RPi.GPIO

**Da Flex** · January 17, 2021 at 6:53 AM Official Post

satfan The code looks OK, I'm using the same import. Maybe you are using wrong apostrophe signs at the sys.path.append line.

Mario77 · January 17, 2021 at 8:12 AM

Quote from Da Flex

satfan The code looks OK, I'm using the same import. Maybe you are using wrong apostrophe signs at the sys.path.append line.

script seems to hang on line 4

Code

import RPi.GPIO as GPIO

That shouldn t be on line 4 if you copied the script I showed you...looks like you r still loading your first script listen-for-shutdown.py without the rest

satfan · January 17, 2021 at 9:58 AM

I made the following things ...

The script should work ... but I don´t get any reaction if I shorten Pin5 Pin6.

I get a strange answer if I start the script manually ..

/storage/hyperion/bin/listen-for-shutdown.py:10: RuntimeWarning:

A physical pull up resistor is fitted on this channel!

GPIO.setup(3, GPIO.IN, pull_up_down=GPIO.PUD_UP)

###################

autostart.sh :

Code

/usr/bin/sh /storage/hyperion/bin/listen-for-shutdown.sh start

listen-for-shutdown.sh :

Code

#! /bin/sh

### BEGIN INIT INFO
# Provides:          listen-for-shutdown.py
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
### END INIT INFO

# If you want a command to always run, put it here

# Carry out specific functions when asked to by the system
case "$1" in
  start)
    echo "Starting listen-for-shutdown.py"
    /storage/hyperion/bin/listen-for-shutdown.py &
    ;;
  stop)
    echo "Stopping listen-for-shutdown.py"
    pkill -f /storage/hyperion/bin/listen-for-shutdown.py
    ;;
  *)
    echo "Usage: /storage/hyperion/bin/listen-for-shutdown.sh {start|stop}"
    exit 1
    ;;
esac

exit 0

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listen-for-shutdown.py :

Code

#!/usr/bin/env python

import sys
sys.path.append('/storage/.kodi/addons/virtual.rpi-tools/lib')
import RPi.GPIO as GPIO
import subprocess


GPIO.setmode(GPIO.BCM)
GPIO.setup(3, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.wait_for_edge(3, GPIO.FALLING)

subprocess.call(['shutdown', '-h', 'now'], shell=False)

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**Da Flex** · January 17, 2021 at 11:51 AM Official Post

Quote from satfan

Code

GPIO.wait_for_edge(3, GPIO.FALLING)

subprocess.call(['shutdown', '-h', 'now'], shell=False)

Surround it by try / except:

Code

try:
    GPIO.wait_for_edge(3, GPIO.FALLING)
    subprocess.call(['shutdown', '-h', 'now'], shell=False)
except:
    pass

**Da Flex** · January 17, 2021 at 1:30 PM Official Post

Just in case, here are my instructions: Click!

satfan · January 17, 2021 at 1:59 PM

It works ...! I `m so stupid... I shouldn't be counting pins at 2am at night ... Since I connected a fan to pin 4 and pin 6, I didn't see that I didn't connect pin1 and pin2. So I tried to make the connection between pins 7-8 instead of 5-6

Thx for your help !

By the way ... is it possible to reconnect the fan to a other Pin which is shut down if I´m in the shutdown mode ? Maybe I have to add something in that script.

**Da Flex** · January 17, 2021 at 2:15 PM Official Post

Have a look at my instructions (post #9). I'm using an LED, which indicates power-on. That could be your fan.

satfan · January 17, 2021 at 4:26 PM

The LED works fine, but I only get 3.3V . That's ok for the LED, but the Fan needs 5 V.

Any idea ?

**Da Flex** · January 17, 2021 at 4:53 PM Official Post

Use pin #02 (5V) and pin #14 (Ground). No script needed (I hope).

satfan · January 17, 2021 at 5:00 PM

That was what I had before. The fan runs allways ...

**Da Flex** · January 17, 2021 at 5:09 PM Official Post

Then keep the LED script (will trigger a transistor) and build this little circuit: Click!

Mario77 · January 18, 2021 at 5:40 PM

Quote from satfan

It works ...! I `m so stupid... I shouldn't be counting pins at 2am at night ... Since I connected a fan to pin 4 and pin 6, I didn't see that I didn't connect pin1 and pin2. So I tried to make the connection between pins 7-8 instead of 5-6
Thx for your help !
By the way ... is it possible to reconnect the fan to a other Pin which is shut down if I´m in the shutdown mode ? Maybe I have to add something in that script.

Glad you r sorted...fan doesn't have to be full trottle...it should work fine on 3.3 just a little slower...or do what Da Flex recommended...you can also use same circuit for PWM Fan setup..works fine on RPI..