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ShutdownDetect.py
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ShutdownDetect.py
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#!/usr/bin/env python
##Copyright [2017] [Nanomesher Limited]
##
##Licensed under the Apache License, Version 2.0 (the "License");
##you may not use this file except in compliance with the License.
##You may obtain a copy of the License at
##
## http://www.apache.org/licenses/LICENSE-2.0
##
##Unless required by applicable law or agreed to in writing, software
##distributed under the License is distributed on an "AS IS" BASIS,
##WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
##See the License for the specific language governing permissions and
##limitations under the License.
import RPi.GPIO as GPIO
import os
import time
def ShutdownPressed(arg):
os.system("sudo shutdown -h now")
GPIO_ButtonShutdown = 7
GPIO.setmode(GPIO.BOARD)
GPIO.setup(GPIO_ButtonShutdown, GPIO.IN, pull_up_down=GPIO.PUD_DOWN) #system shutdown button
while(True):
GPIO.wait_for_edge(GPIO_ButtonShutdown, GPIO.RISING)
start = time.time()
time.sleep(0.05)
while GPIO.input(GPIO_ButtonShutdown) == GPIO.HIGH:
time.sleep(0.01)
length = time.time()-start
if(length > 0.25):
ShutdownPressed(True)