NAME

RFID::Libnfc::Constants

SYNOPSIS

            

              
              
use RFID::Libnfc::Constants;
or
use RFID::Libnfc::Constants qw(<category>);
where <category> can be any of :
- NDO
- IM
- MC
- MU
- NC
- NMT
- NBR
            
          

DESCRIPTION

            

              
              
Constants used within RFID::Libnfc
            
          

CATEGORIES

• NDO

  
              
  
                
                
  NDO_HANDLE_CRC => 0x00,
      Let the PN53X chip handle the CRC bytes. This means that the chip appends
      the CRC bytes to the frames that are transmitted. It will parse the last
      bytes from received frames as incoming CRC bytes. They will be verified
      against the used modulation and protocol. If an frame is expected with
      incorrect CRC bytes this option should be disabled. Example frames where
      this is useful are the ATQA and UID+BCC that are transmitted without CRC
      bytes during the anti-collision phase of the ISO14443-A protocol. 
  NDO_HANDLE_PARITY => 0x01,
      Parity bits in the network layer of ISO14443-A are by default generated and
      validated in the PN53X chip. This is a very convenient feature. On certain
      times though it is useful to get full control of the transmitted data. The
      proprietary MIFARE Classic protocol uses for example custom (encrypted)
      parity bits. For interoperability it is required to be completely
      compatible, including the arbitrary parity bits. When this option is
      disabled, the functions to communicating bits should be used. 
  NDO_ACTIVATE_FIELD => 0x10,
      This option can be used to enable or disable the electronic field of the
      NFC device. 
  NDO_ACTIVATE_CRYPTO1 => 0x11,
      The internal CRYPTO1 co-processor can be used to transmit messages
      encrypted. This option is automatically activated after a successful MIFARE
      Classic authentication. 
  NDO_INFINITE_SELECT => 0x20,
      The default configuration defines that the PN53X chip will try indefinitely
      to invite a tag in the field to respond. This could be desired when it is
      certain a tag will enter the field. On the other hand, when this is
      uncertain, it will block the application. This option could best be compared
      to the (NON)BLOCKING option used by (socket)network programming. 
  NDO_ACCEPT_INVALID_FRAMES => 0x30,
      If this option is enabled, frames that carry less than 4 bits are allowed.
      According to the standards these frames should normally be handles as
      invalid frames. 
  NDO_ACCEPT_MULTIPLE_FRAMES => 0x31,
      If the NFC device should only listen to frames, it could be useful to let
      it gather multiple frames in a sequence. They will be stored in the internal
      FIFO of the PN53X chip. This could be retrieved by using the receive data
      functions. Note that if the chip runs out of bytes (FIFO => 64 bytes long),
      it will overwrite the first received frames, so quick retrieving of the
      received data is desirable. 
  NDO_AUTO_ISO14443_4 => 0x40,
      This option can be used to enable or disable the auto-switching mode to
      ISO14443-4 is device is compliant.
      In initiator mode, it means that NFC chip will send RATS automatically when
      select and it will automatically poll for ISO14443-4 card when ISO14443A is
      requested.
      In target mode, with a NFC chip compiliant (ie. PN532), the chip will
      emulate a 14443-4 PICC using hardware capability 
  NDO_EASY_FRAMING => 0x41,
      Use automatic frames encapsulation and chaining. 
  NDO_FORCE_ISO14443_A => 0x42,
      Force the chip to switch in ISO14443-A
              
            

• IM

  
              
  
                
                
  IM_ISO14443A_106  => 0x00,
      Mifare Classic (both 1K and 4K) and ULTRA tags conform to IM_ISO14443A_106.
      At the moment these are the only implemented tag types.
  IM_FELICA_212     => 0x01,
     * UNIMPLEMENTED *
  IM_FELICA_424     => 0x02,
     * UNIMPLEMENTED *
  IM_ISO14443B_106  => 0x03,
     * UNIMPLEMENTED *
  IM_JEWEL_106      => 0x04
     * UNIMPLEMENTED *
              
            

• MC

  
              
  
                
                
  MC_AUTH_A         => 0x60,
     Select the A key
  MC_AUTH_B         => 0x61,
     Select the B key
  MC_READ           => 0x30,
     Perform a read operation
  MC_WRITE          => 0xA0,
     Perform a write operation
  MC_TRANSFER       => 0xB0,
  MC_DECREMENT      => 0xC0,
     Increment the value of a byte
  MC_INCREMENT      => 0xC1,
     Increment the value of a byte
  MC_STORE          => 0xC2
              
            

• MU

  
              
  
                
                
  MU_REQA           => 0x26,
  MU_WUPA           => 0x52,
  MU_SELECT1        => 0x93,
  MU_SELECT2        => 0x95,
  MU_READ           => 0x30,
  MU_WRITE          => 0xA2,
  MU_CWRITE         => 0xA0,
  MU_HALT           => 0x50
              
            

• NMT

  
              
  
                
                
  NMT_ISO14443A     => 0,
      Mifare Classic (both 1K and 4K) and ULTRA tags conform to IM_ISO14443A_106.
      At the moment these are the only implemented tag types.
  NMT_ISO14443B     => 1,
      * UNIMPLEMENTED *
  NMT_FELICA        => 2,
      * UNIMPLEMENTED *
  NMT_JEWEL         => 3,
      * UNIMPLEMENTED *
  NMT_DEP           => 4
      * UNIMPLEMENTED *
              
            

• NBR

  
              
  
                
                
  NBR_UNDEFINED     => 0,
  NBR_106           => 1,
  NBR_212           => 2,
  NBR_424           => 3,
  NBR_847           => 4
              
            

• NC

  
              
  
                
                
  NC_UNDEFINED      => 0xff,
     * Undefined reader type *
     This will be returned also when an error condition occurs
  NC_PN531          => 0x10
  NC_PN532          => 0x20
  NC_PN533          => 0x30
              
            

SEE ALSO

RFID::Libnfc RFID::Libnfc::Device RFID::Libnfc::TargetInfo RFID::Libnfc::Constants

< check also documentation for libnfc c library [ http://www.libnfc.org/documentation/introduction ] >

AUTHOR

xant

COPYRIGHT AND LICENSE

Copyright (C) 2009-2011 by xant <xant@cpan.org>

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.8 or, at your option, any later version of Perl 5 you may have available.