113 lines
2.5 KiB
Python
113 lines
2.5 KiB
Python
#!/usr/bin/python
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import socket
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##################
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# #
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# Default values #
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# #
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##################
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CONTROLLER = socket.gethostname()
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SERVER = "localhost"
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RFID_PATH = "/dev/ttyUSB0"
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RED_LED = 11
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GREEN_LED = 13
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DOOR_STRIKE = 15
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import os
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####################
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# #
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# Read doorrc file #
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# #
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####################
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for conf in [ "/etc/doorrc", "./doorrc" ]:
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if os.path.exists(conf):
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with open(conf) as f:
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exec(compile(f.read(), "doorrc", 'exec'))
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import atexit
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import RPi.GPIO as GPIO
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####################
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# #
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# Set up GPIO Pins #
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# #
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####################
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GPIO.setmode(GPIO.BOARD)
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atexit.register(GPIO.cleanup)
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GPIO.setup(DOOR_STRIKE, GPIO.OUT)
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GPIO.setup(RED_LED, GPIO.OUT)
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GPIO.setup(GREEN_LED, GPIO.OUT)
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#Be explicit with what we want
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#lowVoltage of 0 is ground
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lowVoltage = 0
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highVoltage = 1
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#Pull Enable Pin Low to make it readable
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GPIO.output(DOOR_STRIKE, lowVoltage)
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#When door is open
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def open_door():
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print("Door is open");
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GPIO.output(GREEN_LED, highVoltage)
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GPIO.output(RED_LED, lowVoltage)
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GPIO.output(DOOR_STRIKE, highVoltage)
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#When door is closed and locked
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def close_door():
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print("Door is closed");
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GPIO.output(DOOR_STRIKE, lowVoltage)
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GPIO.output(GREEN_LED, lowVoltage)
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GPIO.output(RED_LED, highVoltage)
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import time
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#python-pyserial package. Not sure we need this. Grabbed based on
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#http://allenmlabs.blogspot.se/2013/01/raspberry-pi-parallax-rfid-reader.html
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import serial
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######################
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# #
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# Set up RFID Reader #
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# #
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######################
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RFID_SERIAL = serial.Serial(RFID_PATH, 2400, timeout=1)
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from urllib import request
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#############################################
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# #
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# Verify a key with openings.workantile.com #
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# #
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#############################################
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# Blocks for 5 seconds before resetting the door
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def verify_key(key):
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url = SERVER + ("/%s" % key)
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if request.urlopen(url).read().decode() == "OK":
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open_door()
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time.sleep(5)
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close_door()
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while True:
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string = RFID_SERIAL.read(12)
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if len(string) == 0:
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print("No tag read")
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continue
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else:
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key = string[1:11] #exclude start x0A and stop x0D bytes
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print(key)
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verify_key(key)
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RFID_SERIAL.flushInput() # ignore errors, no data
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