Add homemonitor script

homemonitor.py

@@ -0,0 +1,20 @@
+# This script monitors Protovac's HOME key to kick the user
+# back to the home screen
+#
+# Runs as root
+
+import os
+import serial
+
+ser = serial.Serial('/dev/ttyAMA1', baudrate=9600)
+
+
+try:
+    while True:
+        if ser.read() == b'\x01' and ser.read() == b'N' and ser.read() == b'\r':
+            print('Home key pressed, killing login process...')
+            os.system('killall -9 login')
+finally:
+    print('Closing serial port...')
+    ser.close()
+