Initial commit: Added what we have so far

We have a script that (kinda) works!

Signed-off-by: Workantile <maintainers@workantile.com>

.gitignore

@@ -0,0 +1,2 @@
+*.pyc
+*.swp

doors.py

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+#!/usr/bin/python
+
+####################
+#                  #
+# Define GPIO Pins #
+#                  #
+####################
+
+RED_LED     = 11
+GREEN_LED   = 13
+DOOR_STRIKE = 15
+
+####################
+#                  #
+# Set up GPIO Pins #
+#                  #
+####################
+
+import atexit
+import RPi.GPIO as GPIO
+import time
+
+#python-pyserial package. Not sure we need this. Grabbed based on
+#http://allenmlabs.blogspot.se/2013/01/raspberry-pi-parallax-rfid-reader.html
+import serial
+
+#Find the RFID as a USB device
+#TODO: script should find it if not at USB0
+RFID_SERIAL = serial.Serial('/dev/ttyUSB0', 2400, timeout=1)
+
+GPIO.setmode(GPIO.BOARD)
+atexit.register(GPIO.cleanup)
+
+GPIO.setup(DOOR_STRIKE, GPIO.OUT)
+GPIO.setup(RED_LED, GPIO.OUT)
+GPIO.setup(GREEN_LED, GPIO.OUT)
+
+#Be explicit with what we want
+#lowVoltage of 0 is ground
+lowVoltage = 0
+highVoltage = 1
+
+#Pull Enable Pin Low to make it readable
+GPIO.output(DOOR_STRIKE, lowVoltage)
+
+#When door is open
+def open_door():
+    print("Door is open");
+    GPIO.output(GREEN_LED, highVoltage)
+    GPIO.output(RED_LED, lowVoltage)
+    GPIO.output(DOOR_STRIKE, highVoltage)
+
+#When door is closed and locked
+def close_door():
+    print("Door is closed");
+    GPIO.output(DOOR_STRIKE, lowVoltage)
+    GPIO.output(GREEN_LED, lowVoltage)
+    GPIO.output(RED_LED, highVoltage)
+
+#############################################
+#                                           #
+# Verify a key with openings.workantile.com #
+#                                           #
+#############################################
+
+from urllib import request
+
+# Anna's key
+KEY="1F00D0B045"
+
+# Which door controller are we?
+CONTROLLER="deadbeef01"
+
+
+# Blocks for 5 seconds before resetting the door
+def verify_key(key):
+    url = "http://openings.workantile.com/access/%s/%s" % (CONTROLLER, key)
+    if request.urlopen(url).read().decode() == "OK":
+        open_door()
+        time.sleep(5)
+    close_door()
+    RFID_SERIAL.flushInput() # ignore errors, no data
+
+
+import sys
+#sys.exit(0)
+
+while True:
+    string = RFID_SERIAL.read(12)   
+    if len(string) == 0:
+            print("No tag read")
+            continue
+    else:
+        string = string[1:11] #exclude start x0A and stop x0D bytes
+        print(string)
+        verify_key(KEY)