# Import the modules to send commands to the system and access GPIO pins from subprocess import call import RPi.GPIO as gpio keep_powered_pin = 18 # Default pin is 8 # Pin to pull high to keep the Pi Supply giving power gpio.setup(keep_powered_pin, gpio.OUT, initial=gpio.HIGH) # Define a function to keep script running def loop(): raw_input() # Define a function to run when an interrupt is called def shutdown(pin): call('halt', shell=False) gpio.setmode(gpio.BOARD) # Set pin numbering to board numbering gpio.setup(7, gpio.IN) # Set up pin 7 as an input gpio.add_event_detect(7, gpio.RISING, callback=shutdown, bouncetime=200) # Set up an interrupt to look for button presses loop() # Run the loop function to keep script running
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