nfcpy

Sony FeliCa Lite-S format issues

Asked by ian@iwjohnston.com

Stephen,

I am trying to use the Sony FeliCa Lite-S as a Tag3 with nfcpy. They were supplied as "NDEF formatted". However tagtool.py complains when I try to "show" the Tag. See below:

pi@pi3:~/nfcpy/trunk/examples $ python tagtool.py show
[nfc.clf] searching for reader on path usb
[nfc.clf] using SONY RC-S380/P NFC Port-100 v1.11 at usb:001:007
** waiting for a tag **
Type3Tag 'FeliCa Lite-S (RC-S966)' ID=012E34E829CE1E71 PMM=00F1000000014300 SYS=88B4
Traceback (most recent call last):
  File "tagtool.py", line 569, in <module>
    TagTool().run()
  File "/home/pi/nfcpy/trunk/examples/cli.py", line 415, in run
    while self.run_once() and self.options.loop:
  File "/home/pi/nfcpy/trunk/examples/cli.py", line 410, in run_once
    return clf.connect(**kwargs)
  File "/home/pi/nfcpy/trunk/nfc/clf/__init__.py", line 546, in connect
    result = self._rdwr_connect(rdwr_options, terminate)
  File "/home/pi/nfcpy/trunk/nfc/clf/__init__.py", line 572, in _rdwr_connect
    if options['on-connect'](tag):
  File "tagtool.py", line 303, in on_rdwr_connect
    self.rdwr_commands[self.options.command](tag)
  File "tagtool.py", line 324, in show_tag
    if tag.ndef:
  File "/home/pi/nfcpy/trunk/nfc/tag/__init__.py", line 221, in ndef
    if ndef.has_changed:
  File "/home/pi/nfcpy/trunk/nfc/tag/__init__.py", line 135, in has_changed
    old_data, self._data = self._data, self._read_ndef_data()
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3.py", line 190, in _read_ndef_data
    attributes = self._read_attribute_data()
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3_sony.py", line 760, in _read_attribute_data
    attributes = super(FelicaLiteS.NDEF, self)._read_attribute_data()
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3_sony.py", line 397, in _read_attribute_data
    attributes = super(FelicaLite.NDEF, self)._read_attribute_data()
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3.py", line 153, in _read_attribute_data
    try: data = self._tag.read_from_ndef_service(0)
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3_sony.py", line 688, in read_without_mac
    return self.read_without_encryption(service_list, block_list)
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3.py", line 511, in read_without_encryption
    data = self.send_cmd_recv_rsp(0x06, data, timeout)
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3.py", line 657, in send_cmd_recv_rsp
    if rsp[0] != len(rsp):
IndexError: bytearray index out of range

It companies even more when I try the tag tool,py format tt3 command

pi@pi3:~/nfcpy/trunk/examples $ python tagtool.py format tt3
[nfc.clf] searching for reader on path usb
[nfc.clf] using SONY RC-S380/P NFC Port-100 v1.11 at usb:001:005
** waiting for a tag **
Traceback (most recent call last):
  File "tagtool.py", line 569, in <module>
    TagTool().run()
  File "/home/pi/nfcpy/trunk/examples/cli.py", line 415, in run
    while self.run_once() and self.options.loop:
  File "/home/pi/nfcpy/trunk/examples/cli.py", line 410, in run_once
    return clf.connect(**kwargs)
  File "/home/pi/nfcpy/trunk/nfc/clf/__init__.py", line 546, in connect
    result = self._rdwr_connect(rdwr_options, terminate)
  File "/home/pi/nfcpy/trunk/nfc/clf/__init__.py", line 572, in _rdwr_connect
    if options['on-connect'](tag):
  File "tagtool.py", line 303, in on_rdwr_connect
    self.rdwr_commands[self.options.command](tag)
  File "tagtool.py", line 392, in format_tag
    formatted = tag.format(version=version, wipe=self.options.wipe)
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3_sony.py", line 625, in format
    return super(FelicaLite, self).format(version, wipe)
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3.py", line 339, in format
    return super(Type3Tag, self).format(version, wipe)
  File "/home/pi/nfcpy/trunk/nfc/tag/__init__.py", line 281, in format
    status = self._format(version, wipe)
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3_sony.py", line 637, in _format
    mc = self.read_without_mac(0x88)
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3_sony.py", line 688, in read_without_mac
    return self.read_without_encryption(service_list, block_list)
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3.py", line 511, in read_without_encryption
    data = self.send_cmd_recv_rsp(0x06, data, timeout)
  File "/home/pi/nfcpy/trunk/nfc/tag/tt3.py", line 657, in send_cmd_recv_rsp
    if rsp[0] != len(rsp):
IndexError: bytearray index out of range

Am I doing something basically wrong here? I'm sure it is due to my very basic knowledge of python

Thx Ian

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Stephen Tiedemann (stephen-tiedemann) said : 		#1

I remember that very recently I saw a similar output and it turned out to be a corner case of tag response time out below one millisecond versus millisecond granularity in the corresponding RC-S380 command, effectively resulting in a zero wait for the tag's answer. This issue is corrected in trunk revision #270 (which is just the tip of trunk at this moment). It's not yet part of any release version, so please try with latest trunk.

Revision history for this message
ian@iwjohnston.com (ian-5) said : 		#2

Hello Stephen,

I removed the old trunk and reinstalled it with revision #270. It now works well.

See below:

pi@pi3:~/nfcpy/trunk/examples $ python tagtool.py show
[nfc.clf] searching for reader on path usb
[nfc.clf] using SONY RC-S380/P NFC Port-100 v1.11 at usb:001:007
** waiting for a tag **
Type3Tag 'FeliCa Lite-S (RC-S966)' ID=012E34E829CE2867 PMM=00F1000000014300 SYS=88B4
[nfc.tag.tt3] got ndef attributes {'ver': 16, 'ln': 0, 'nbr': 4, 'nmaxb': 13, 'nbw': 1, 'rwflag': 1, 'writef': 0}
[nfc.tag.tt3] got 0 byte ndef data
NDEF Capabilities:
  readable = yes
  writeable = yes
  capacity = 208 byte
  message = 0 byte

Regards,
Ian