39 lines
751 B
Python
39 lines
751 B
Python
#!/usr/bin/python
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# PiPower
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# Copyright 2017 (c) Mark van Renswoude
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#
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# Yet another power supply for the Raspberry Pi.
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# Designed to run on an ATTiny85 with a self-locking button.
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import RPi.GPIO as GPIO
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import time
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import os
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GPIO.setmode(GPIO.BCM)
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GPIO.setup(15, GPIO.OUT)
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GPIO.setup(18, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
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hasShutdown = False
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def shutdownSignal(channel):
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print "PiPower: shutting down"
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os.system('shutdown -h now')
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hasShutdown = true
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GPIO.add_event_detect(18, GPIO.RISING, callback=shutdownSignal, bouncetime=300)
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GPIO.output(15, GPIO.HIGH)
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try:
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print "PiPower: waiting for signal"
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while not hasShutdown:
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time.sleep(1)
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print "PiPower: exiting"
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GPIO.cleanup()
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except KeyboardInterrupt:
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GPIO.cleanup() |