7 our @EXPORT = qw( hex2bytes as_hex hex_tag );
9 use Device::SerialPort qw(:STAT);
10 use Data::Dump qw(dump);
14 RFID::Biblio - support serial RFID devices
18 our $VERSION = '0.01';
25 This module tries to support USB serial RFID readers wsing simple API
26 which is sutable for direct mapping to REST JSONP service.
28 Perhaps a little code snippet.
32 my $rfid = RFID::Biblio->new(
33 device => '/dev/ttyUSB0', # with fallback to RFID_DEVICE
35 my $visible = $rfid->scan;
37 =head1 SUBROUTINES/METHODS
57 my $serial_obj = $self->port;
64 return $self->{port} if defined $self->{port};
66 my $settings = $self->serial_settings;
67 $settings->{device} ||= $ENV{RFID_DEVICE};
68 warn "# settings ",dump $settings;
70 $self->{port} = Device::SerialPort->new( $settings->{device} )
71 || die "can't open serial port: $!\n";
73 $self->{port}->$_( $settings->{$_} )
74 foreach ( qw/handshake baudrate databits parity stopbits/ );
80 my $visible = $rfid->scan;
82 Returns hash with keys which match tag UID and values with blocks
89 warn "# scan tags in reader range\n";
90 my @tags = $self->inventory;
93 # FIXME this is naive implementation which just discards other tags
94 foreach my $tag ( @tags ) {
95 my $blocks = $self->read_blocks( $tag );
97 warn "ERROR: can't read tag $tag\n";
98 delete $visible->{$tag};
100 $visible->{$tag} = $blocks->{$tag};
108 =head1 MANDATORY IMPLEMENTATIONS
110 Each reader must implement following hooks as sub-classes.
118 my @tags = $self->invetory;
122 my $hash = $self->read_blocks( $tag );
124 All blocks are under key which is tag UID with array of blocks returned from reader
126 $hash = { 'E000000123456789' => [ 'blk1', 'blk2', ... ] };
128 L<RFID::Biblio::3M810> sends tag UID with data payload, so we might expect
129 to receive response from other tags from protocol specification,
133 $self->write_blocks( $tag => $bytes );
135 $self->write_blocks( $tag => [ 'blk1', 'blk2', ... ] );
139 my $afi = $self->read_afi( $tag );
143 $self->write_afi( $tag => $afi );
149 Formatting functions are exported
153 my $bytes = hex2bytes($hex);
158 my $str = shift || die "no str?";
161 $b =~ s/(..)/\\x$1/g;
165 warn "## str2bytes( $str ) => $b => ",as_hex($bytes) if $debug;
171 print as_hex( $bytes );
177 foreach my $str ( @_ ) {
178 my $hex = uc unpack( 'H*', $str );
179 $hex =~ s/(..)/$1 /g if length( $str ) > 2;
183 return join(' | ', @out);
188 print hex_tag $8bytes;
192 sub hex_tag { uc(unpack('H16', shift)) }
197 Dobrica Pavlinusic, C<< <dpavlin at rot13.org> >>
201 Please report any bugs or feature requests to C<bug-rfid-serial at rt.cpan.org>, or through
202 the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=RFID-Biblio>. I will be notified, and then you'll
203 automatically be notified of progress on your bug as I make changes.
210 You can find documentation for this module with the perldoc command.
215 You can also look for information at:
219 =item * RT: CPAN's request tracker
221 L<http://rt.cpan.org/NoAuth/Bugs.html?Dist=RFID-Biblio>
223 =item * AnnoCPAN: Annotated CPAN documentation
225 L<http://annocpan.org/dist/RFID-Biblio>
229 L<http://cpanratings.perl.org/d/RFID-Biblio>
233 L<http://search.cpan.org/dist/RFID-Biblio/>
238 =head1 ACKNOWLEDGEMENTS
241 =head1 LICENSE AND COPYRIGHT
243 Copyright 2010 Dobrica Pavlinusic.
245 This program is free software; you can redistribute it and/or modify
246 it under the terms of the GNU General Public License as published by
247 the Free Software Foundation; version 2 dated June, 1991 or at your option
250 This program is distributed in the hope that it will be useful,
251 but WITHOUT ANY WARRANTY; without even the implied warranty of
252 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
253 GNU General Public License for more details.
255 A copy of the GNU General Public License is available in the source tree;
256 if not, write to the Free Software Foundation, Inc.,
257 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
262 1; # End of RFID::Biblio