ServiceReader.py

#!/usr/bin/env python
# -*- coding: utf8 -*-
#
#    Copyright 2014,2018 Mario Gomez <mario.gomez@teubi.co>
#
#    This file is part of MFRC522-Python
#    MFRC522-Python is a simple Python implementation for
#    the MFRC522 NFC Card Reader for the Raspberry Pi.
#
#    MFRC522-Python is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Lesser General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    MFRC522-Python is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Lesser General Public License for more details.
#
#    You should have received a copy of the GNU Lesser General Public License
#    along with MFRC522-Python.  If not, see <http://www.gnu.org/licenses/>.
#

import RPi.GPIO as GPIO
import keyboard
import MFRC522
import signal
import time

import logging

logging.basicConfig(filename='example.log', level=logging.DEBUG)

continue_reading = True
first_run = True
# Create an object of the class MFRC522
MIFAREReader = MFRC522.MFRC522()

# Welcome message
#print "Welcome to the MFRC522 data read example"
#print "Press Ctrl-C to stop."

# This loop keeps checking for chips. If one is near it will get the UID and authenticate
try:
	while continue_reading:
		
		# Scan for cards    
		(status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)

		# If a card is found
		#if status == MIFAREReader.MI_OK:
		#    print "Card detected"
		
		# Get the UID of the card
		(status,uid) = MIFAREReader.MFRC522_Anticoll()

		# If we have the UID, continue
		if status == MIFAREReader.MI_OK:

			# Print UID
			#print "Card read UID: %s,%s,%s,%s" % (uid[0], uid[1], uid[2], uid[3])

			# This is the default key for authentication
			key = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
			
			# Select the scanned tag
			MIFAREReader.MFRC522_SelectTag(uid)

			# Authenticate
			status = MIFAREReader.MFRC522_Auth(MIFAREReader.PICC_AUTHENT1A, 8, key, uid)

			# Check if authenticated
			if status == MIFAREReader.MI_OK:
				data = MIFAREReader.MFRC522_Read(8)
				text = ""
				for x in data:
					if x != 255:
						text += "".join(chr(x))
				MIFAREReader.MFRC522_StopCrypto1()
				time.sleep(0.5)
				keyboard.write("%s" % (text))
				keyboard.press_and_release('enter')
				if first_run:
					first_run = False
				else:
					time.sleep(2)
except:
	logging.getLogger(__name__).exception("Program terminated")
	raise