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Man Pages
NMEA(3) User Contributed Perl Documentation NMEA(3)
 

GPS::NMEA - Perl interface to GPS equipment using the NMEA Protocol

  use GPS::NMEA;
  $gps = new GPS::NMEA(  'Port'      => '/dev/ttyS0',
                         'Baud'      => 9600,
                );

GPS::NMEA allows the connection and use of of a GPS receiver in perl scripts.
Note that latitudes and longitudes are in DMM format.

Get the position periodically:
    #!/usr/bin/perl
    use GPS::NMEA;
    
    my $gps = GPS::NMEA->new(Port => '/dev/cuaa0', # or COM5: or /dev/ttyS0
                             Baud => 4800);
    while(1) {
        my($ns,$lat,$ew,$lon) = $gps->get_position;
        print "($ns,$lat,$ew,$lon)\n";
    }
Get the internal NMEA dump:
    #!/usr/bin/perl
    use GPS::NMEA;
    use Data::Dumper;
    
    my $gps = GPS::NMEA->new(Port => '/dev/cuaa0', # or COM5: or /dev/ttyS0
                             Baud => 4800);
    while(1) {
        $gps->parse;
    
        # Dump internal NMEA data:
        $gps->nmea_data_dump;
    
        # Alternative to look at the internal NMEA data:
        require Data::Dumper;
        print Data::Dumper->new([$gps->{NMEADATA}],[])->Indent(1)->Useqq(1)->Dump;
    }
    __END__

Joao Pedro B Gonçalves , joaop@iscsp.utl.pt

Hey! The above document had some coding errors, which are explained below:
Around line 159:
You forgot a '=back' before '=head1'
Around line 204:
Non-ASCII character seen before =encoding in 'Gonçalves'. Assuming CP1252
2009-03-07 perl v5.28.1

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