69 lines
1.6 KiB
Python
69 lines
1.6 KiB
Python
#!/usr/bin/env python
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#!/usr/bin/env 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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# Keys
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DEFAULT_KEY = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
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KEY_S0 = [0x20, 0x20, 0x20, 0x20, 0x20, 0x20]
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# Selecting key
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KEY = DEFAULT_KEY
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def uid_to_num(uid):
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n = 0
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for i in range(0, 5):
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n = n * 256 + uid[i]
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return n
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MIFAREReader = MFRC522.MFRC522()
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print "Waiting for tag...\n"
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while True:
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sector = 1
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while True:
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(status, TagSize) = MIFAREReader.MFRC522_Request(MIFAREReader.PICC_REQIDL)
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if status != MIFAREReader.MI_OK:
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continue
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if sector >= TagSize:
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break
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print "Wiping sector", sector, "..."
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# Selecting blocks
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BlockAddrs = [ (sector * 4), (sector * 4 + 1), (sector * 4 + 2) ]
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TrailerBlockAddr = (sector * 4 + 3)
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# Writing data
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(status, UID) = MIFAREReader.MFRC522_Anticoll()
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if status != MIFAREReader.MI_OK:
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break
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MIFAREReader.MFRC522_SelectTag(UID)
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status = MIFAREReader.MFRC522_Auth(MIFAREReader.PICC_AUTHENT1A, TrailerBlockAddr, KEY, UID)
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if status == MIFAREReader.MI_OK:
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data = bytearray()
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data.extend(bytearray("".ljust(len(BlockAddrs) * 16)))
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i = 0
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for block_num in BlockAddrs:
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MIFAREReader.MFRC522_Write(block_num, data[(i*16):(i+1)*16])
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i += 1
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print "Sector", sector, "wiped!"
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else:
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print "Can't access sector", sector, "!"
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MIFAREReader.MFRC522_StopCrypto1()
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sector += 1
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print "\nTag wiped!"
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break
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GPIO.cleanup() |