57 lines
1.6 KiB
Python
57 lines
1.6 KiB
Python
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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: "+str(uid[0])+","+str(uid[1])+","+str(uid[2])+","+str(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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# Check if authenticated
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if status == MIFAREReader.MI_OK:
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MIFAREReader.MFRC522_Read(8)
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MIFAREReader.MFRC522_StopCrypto1()
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else:
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print "Authentication error"
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# Make sure to stop scanning for cards
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continue_reading = false
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