From 8ad7b50ea071ef8050dc6b4de82b882ea145c366 Mon Sep 17 00:00:00 2001
From: Menno van der Graaf <mennovandergraaf@hotmail.com>
Date: Tue, 3 Aug 2021 00:56:59 +0200
Subject: [PATCH] Add powerbutton service

---
 services/powerbutton.py      | 19 +++++++++++++++++++
 services/powerbutton.service |  9 +++++++++
 2 files changed, 28 insertions(+)
 create mode 100644 services/powerbutton.py
 create mode 100644 services/powerbutton.service

diff --git a/services/powerbutton.py b/services/powerbutton.py
new file mode 100644
index 0000000..994c395
--- /dev/null
+++ b/services/powerbutton.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python
+"""
+Shutdown script, that waits for a falling edge on a specified GPIO pin
+"""
+import os
+
+try:
+    from RPi import GPIO
+except RuntimeError:
+    print("Error importing RPi.GPIO, need sudo?")
+POWER_BUTTON_PIN = 27
+GPIO.setmode(GPIO.BCM)
+GPIO.setup(POWER_BUTTON_PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+
+print('Monitoring shutdown button for falling edge')
+while True:
+    GPIO.wait_for_edge(POWER_BUTTON_PIN, GPIO.FALLING)
+    print('Shutdown button pressed, shutting down, farewell')
+    os.system('systemctl poweroff')
diff --git a/services/powerbutton.service b/services/powerbutton.service
new file mode 100644
index 0000000..de74500
--- /dev/null
+++ b/services/powerbutton.service
@@ -0,0 +1,9 @@
+[Unit]
+Description=Monitors powerbutton to send shutdown command
+
+[Service]
+Restart=on-abnormal
+ExecStart=/usr/local/bin/powerbutton.py
+
+[Install]
+WantedBy=multi-user.target