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      1 #!/usr/bin/python
      2 # Author: Zion Orent <zorent (at] ics.com>
      3 # Copyright (c) 2015 Intel Corporation.
      4 #
      5 # Permission is hereby granted, free of charge, to any person obtaining
      6 # a copy of this software and associated documentation files (the
      7 # "Software"), to deal in the Software without restriction, including
      8 # without limitation the rights to use, copy, modify, merge, publish,
      9 # distribute, sublicense, and/or sell copies of the Software, and to
     10 # permit persons to whom the Software is furnished to do so, subject to
     11 # the following conditions:
     12 #
     13 # The above copyright notice and this permission notice shall be
     14 # included in all copies or substantial portions of the Software.
     15 #
     16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     17 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     18 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     19 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
     20 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     21 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     22 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     23 
     24 import time, sys, signal, atexit
     25 import pyupm_pn532 as upmPn532
     26 
     27 # Instantiate an PN532 on I2C bus 0 (default) using gpio 3 for the
     28 # IRQ, and gpio 2 for the reset pin.
     29 myNFC = upmPn532.PN532(3, 2)
     30 
     31 ## Exit handlers ##
     32 # This stops python from printing a stacktrace when you hit control-C
     33 def SIGINTHandler(signum, frame):
     34 	raise SystemExit
     35 
     36 # This lets you run code on exit
     37 def exitHandler():
     38 	print "Exiting"
     39 	sys.exit(0)
     40 
     41 # Register exit handlers
     42 atexit.register(exitHandler)
     43 signal.signal(signal.SIGINT, SIGINTHandler)
     44 
     45 
     46 if (not myNFC.init()):
     47 	print "init() failed"
     48 	sys.exit(0)
     49 
     50 vers = myNFC.getFirmwareVersion()
     51 
     52 if (vers):
     53 	print "Got firmware version: %08x" % vers
     54 else:
     55 	print "Could not identify PN532"
     56 	sys.exit(0)
     57 
     58 # Now scan and identify any cards that come in range (1 for now)
     59 
     60 # Retry forever
     61 myNFC.setPassiveActivationRetries(0xff)
     62 
     63 myNFC.SAMConfig()
     64 
     65 uidSize = upmPn532.uint8Array(0)
     66 uid = upmPn532.uint8Array(7)
     67 
     68 
     69 while (1):
     70 	for i in range(7):
     71 		uid.__setitem__(i, 0)
     72 	if (myNFC.readPassiveTargetID(upmPn532.PN532.BAUD_MIFARE_ISO14443A,
     73                                       uid, uidSize, 2000)):
     74 		# found a card
     75 		print "Found a card: UID len", uidSize.__getitem__(0)
     76 		print "UID: ",
     77 		for i in range(uidSize.__getitem__(0)):
     78 			print "%02x" % uid.__getitem__(i),
     79 		print
     80 		print "SAK: %02x" % myNFC.getSAK()
     81 		print "ATQA: %04x" % myNFC.getATQA()
     82                 print
     83 		time.sleep(1)
     84 	else:
     85 		print "Waiting for a card...\n"
     86