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90 lines
3.1 KiB
90 lines
3.1 KiB
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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/*
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* Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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"""
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import RPi.GPIO as GPIO
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import argparse
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BULB_PIN = 11 # The GPIO Pin# in RPi to which the LED is connected
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BULB_STATE = "OFF"
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# Define and parse command line arguments
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# If the log file is specified on the command line then override the default
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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parser = argparse.ArgumentParser(description="Python service to switch LED on RPi")
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help_string = "switch-state of the BULB[LED] (default 'OFF')"
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parser.add_argument("-s", "--state", help=help_string)
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args = parser.parse_args()
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if args.state:
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BULB_STATE = args.state
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### ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# Set the GPIO pin modes for the ones to be read
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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def setUpGPIOPins():
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try:
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GPIO.setwarnings(False)
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GPIO.setmode(GPIO.BOARD)
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except Exception as e:
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print "IOT_UTILS: Exception at 'GPIO.setmode'"
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print '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'
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pass
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GPIO.setup(BULB_PIN, GPIO.OUT)
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GPIO.output(BULB_PIN, False)
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# Method used to switch ON/OFF the LED attached to RPi
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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def switchBulb(state):
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print "Requested Switch State: " + state
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if state == "ON":
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GPIO.output(BULB_PIN, True)
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print "BULB Switched ON"
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elif state == "OFF":
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GPIO.output(BULB_PIN, False)
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print "BULB Switched OFF"
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print '~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~'
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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# The Main method of the server script
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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def main():
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setUpGPIOPins()
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switchBulb(BULB_STATE)
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# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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if __name__ == '__main__':
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main() |