88 lines
1.9 KiB
Python
88 lines
1.9 KiB
Python
#!/usr/bin/env python
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from __future__ import print_function
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import RPi.GPIO as GPIO
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import MFRC522
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# Keys
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DEFAULT_KEY = [0xFF,0xFF,0xFF,0xFF,0xFF,0xFF]
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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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RFID = MFRC522.MFRC522()
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print("# RFID Wipe\n")
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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) = RFID.Request(RFID.PICC_REQIDL)
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if Status != RFID.MI_OK:
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continue
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if TagSize < 1:
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print("Can't read tag properly!")
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break
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if Sector >= TagSize:
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break
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# Only for formatting
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Spacer = ""
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if Sector < 10:
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Spacer = " "
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print("Wiping sector %s%s ... " % (Spacer, Sector), end="")
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# Selecting blocks
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BaseBlockLength = 4
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if Sector < 32:
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BlockLength = BaseBlockLength
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StartAddr = Sector * BlockLength
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else:
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BlockLength = 16
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StartAddr = 32 * BaseBlockLength + (Sector - 32) * BlockLength
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BlockAddrs = []
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for i in range(0, (BlockLength - 1)):
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BlockAddrs.append((StartAddr + i))
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TrailerBlockAddr = (StartAddr + (BlockLength - 1))
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# Initializing tag
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(Status, UID) = RFID.Anticoll()
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if Status != RFID.MI_OK:
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break
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# Wiping sector
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RFID.SelectTag(UID)
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Status = RFID.Auth(RFID.PICC_AUTHENT1A, TrailerBlockAddr, KEY, UID)
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if Status == RFID.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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RFID.Write(block_num, data[(i*16):(i+1)*16])
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i += 1
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print("OK!")
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else:
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print("NO ACCESS!")
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RFID.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() |