Trying to add off button with script at startup, not working

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6

Auto startup as a systemd service
(Need only a push button.)

1.Install RPi.GPIO if not yet.

$ sudo su
# apt-get update
# apt-get install python-pip python-dev gcc
# pip install rpi.gpio

2.Create a python script for push button shutdown:

# nano /home/osmc/shutdown.py

Add to the file:

#!/usr/bin/python
import RPi.GPIO as GPIO
import os

# hide warning
GPIO.setwarnings(0)

# connect RPi numbered pin
button = 33

# hide warning
GPIO.setwarnings(0)

# pins setup
GPIO.setmode(GPIO.BOARD)
GPIO.setup(button, GPIO.IN, pull_up_down=GPIO.PUD_UP)

# wait for button press
print('Wait for button press...')
GPIO.wait_for_edge(button, GPIO.FALLING)

# activate system command
os.system('sudo shutdown -h now')

Change permission:

# chmod +x /home/osmc/shutdown.py

3.Create a systemd service file:

# nano /lib/systemd/system/shutdown.service

Add to the service file:

[Unit]
Description = GPIO shutdown button

[Service]
Type = idle
ExecStart = /home/osmc/shutdown.py

[Install]
WantedBy = multi-user.target

4.Enable auto startup:

# systemctl enable shutdown

Connect a push button to RPi GPIO pin #33 + #34
Start the service without reboot:

# systemctl start shutdown

Press the button to shutdown.

Easier Alternative:

If you already have a working remote control, it’s easier to map a button to shutdown command.

Create a python script for shutdown:

$ sudo su
# nano /home/osmc/shutdown.py

Add to the script file:

#!/usr/bin/python
import os
os.system('sudo shutdown -h now')

Create a custom keymaps file:

# nano /home/osmc/.kodi/userdata/keymaps/remote.xml

Add to the keymap file:
(‘zero’ can be change to any button)

<?xml version="1.0" encoding="UTF-8"?>
<keymap>
  <global>
    <remote>
      <zero>RunScript(/home/osmc/shutdown.py)</zero>
    </remote>
  </global>
</keymap>

Restart (Power > Exit) to load the custom keymaps file.
Press the remote button to shutdown.

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