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This driver was written using an Adafruit PN532 board: http://www.adafruit.com/products/364 It is based heavily on their arduino code, with significant modifications. Signed-off-by: Jon Trulson <jtrulson@ics.com> Signed-off-by: Zion Orent <zorent@ics.com> Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
106 lines
3.2 KiB
Python
106 lines
3.2 KiB
Python
#!/usr/bin/python
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# Author: Jon Trulson <jtrulson@ics.com>
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# Copyright (c) 2015 Intel Corporation.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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import time, sys, signal, atexit
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import pyupm_pn532 as upmPn532
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# Instantiate an PN532 on I2C bus 0 (default) using gpio 3 for the
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# IRQ, and gpio 2 for the reset pin.
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myNFC = upmPn532.PN532(3, 2)
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## Exit handlers ##
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# This stops python from printing a stacktrace when you hit control-C
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def SIGINTHandler(signum, frame):
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raise SystemExit
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# This lets you run code on exit
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def exitHandler():
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print "Exiting"
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sys.exit(0)
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# Register exit handlers
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atexit.register(exitHandler)
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signal.signal(signal.SIGINT, SIGINTHandler)
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if (not myNFC.init()):
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print "init() failed"
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sys.exit(0)
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vers = myNFC.getFirmwareVersion()
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if (vers):
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print "Got firmware version: %08x" % vers
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else:
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print "Could not identify PN532"
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sys.exit(0)
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# Now scan and identify any cards that come in range (1 for now)
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# Retry forever
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myNFC.setPassiveActivationRetries(0xff)
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myNFC.SAMConfig()
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uidSize = upmPn532.uint8Array(0)
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uid = upmPn532.uint8Array(7)
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# the URL we want to add as an NDEF record
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# NOTE: this cannot exceed 34 characters.
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url = "iotdk.intel.com"
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foundCard = False
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while (not foundCard):
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for i in range(7):
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uid.__setitem__(i, 0)
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if (myNFC.readPassiveTargetID(upmPn532.PN532.BAUD_MIFARE_ISO14443A,
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uid, uidSize, 2000)):
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# found a card
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print "Found a card: UID len", uidSize.__getitem__(0)
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print "UID: ",
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for i in range(uidSize.__getitem__(0)):
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print "%02x" % uid.__getitem__(i),
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print
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print "SAK: %02x" % myNFC.getSAK()
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print "ATQA: %04x" % myNFC.getATQA()
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print
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foundCard = True
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else:
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print "Waiting for a card...\n"
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if (uidSize.__getitem__(0) != 7):
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print "This example will only write an NDEF URI to preformatted"
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print "Mifare Ultralight or NTAG2XX tags"
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sys.exit(1)
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# 48 bytes is maximum data area on ultralight cards, so we use that
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# as the maximum datasize here. Obviously if you have a bigger
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# card, you can write more data.
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if (not myNFC.ntag2xx_WriteNDEFURI(upmPn532.PN532.NDEF_URIPREFIX_HTTP, url, 48)):
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# failure
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print "Failed to write NDEF record tag."
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sys.exit(1)
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print "Success, URL record written to tag."
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