117 lines
3.5 KiB
Python
117 lines
3.5 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf8 -*-
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#
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# Copyright 2014,2018 Mario Gomez <mario.gomez@teubi.co>
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#
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# This file is part of MFRC522-Python
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# MFRC522-Python is a simple Python implementation for
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# the MFRC522 NFC Card Reader for the Raspberry Pi.
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#
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# MFRC522-Python is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# MFRC522-Python is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with MFRC522-Python. If not, see <http://www.gnu.org/licenses/>.
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#
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import RPi.GPIO as GPIO
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import MFRC522
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import signal
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continue_reading = True
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# Capture SIGINT for cleanup when the script is aborted
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def end_read(signal,frame):
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global continue_reading
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print "Ctrl+C captured, ending read."
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continue_reading = False
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GPIO.cleanup()
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# Hook the SIGINT
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signal.signal(signal.SIGINT, end_read)
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# Create an object of the class MFRC522
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MIFAREReader = MFRC522.MFRC522()
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# This loop keeps checking for chips. If one is near it will get the UID and authenticate
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while continue_reading:
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# Scan for cards
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(status,TagType) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
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# If a card is found
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if status == MIFAREReader.MI_OK:
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print "Card detected"
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# Get the UID of the card
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(status,uid) = MIFAREReader.MFRC522_Anticoll()
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# If we have the UID, continue
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if status == MIFAREReader.MI_OK:
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# Print UID
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print "Card read UID: %s,%s,%s,%s" % (uid[0], uid[1], uid[2], uid[3])
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# This is the default key for authentication
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key = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
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# Select the scanned tag
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MIFAREReader.MFRC522_SelectTag(uid)
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# Authenticate
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status = MIFAREReader.MFRC522_Auth(MIFAREReader.PICC_AUTHENT1A, 8, key, uid)
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print "\n"
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# Check if authenticated
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if status == MIFAREReader.MI_OK:
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# Variable for the data to write
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data = []
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# Fill the data with 0xFF
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for x in range(0,16):
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data.append(0xFF)
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print "Sector 8 looked like this:"
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# Read block 8
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MIFAREReader.MFRC522_Read(8)
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print "\n"
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print "Sector 8 will now be filled with 0xFF:"
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# Write the data
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MIFAREReader.MFRC522_Write(8, data)
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print "\n"
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print "It now looks like this:"
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# Check to see if it was written
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MIFAREReader.MFRC522_Read(8)
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print "\n"
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data = []
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# Fill the data with 0x00
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for x in range(0,16):
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data.append(0x00)
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print "Now we fill it with 0x00:"
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MIFAREReader.MFRC522_Write(8, data)
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print "\n"
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print "It is now empty:"
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# Check to see if it was written
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MIFAREReader.MFRC522_Read(8)
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print "\n"
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# Stop
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MIFAREReader.MFRC522_StopCrypto1()
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# Make sure to stop reading for cards
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continue_reading = False
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else:
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print "Authentication error"
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