NAME
    GPS::Lowrance::LSI - Lowrance Serial Interface Protocol module in Perl

REQUIREMENTS
    The following modules are required to use this module:

      Carp::Assert
      Parse::Binary::FixedFormat
      Win32::SerialPort or Device::SerialPort

    This module should work with Perl 5.6.x. It has been tested on Perl
    5.8.2.

  Installation
    Installation is standard:

      perl Makefile.PL
      make
      make test
      make install

    For Windows playforms, you may need to use "nmake" instead.

SYNOPSIS
      use Win32::SerialPort;              # or Device::SerialPort (?)
      use GPS::Lowrance::LSI 'lsi_query';

      my $port = new Win32::SerialPort( 'com1' );

      my $data = lsi_query( $port, 0x30e, "", 0 );

DESCRIPTION
    This module provides *very* low-level support for the LSI (Lowrance
    Serial Interface) 100 protocol used to communicate with Lowrance or
    Eagle GPS devices.

    (Higher-level functions and wrappers for specific commands will be
    provided in other modules such as GPS::Lowrance. This module is
    intentionally kept simple and separate.)

    More information is available in the module documentation.

REVISION HISTORY
    Changes since version 0.21:

    0.22   2 Mar 2003
	- will not read data in more than 256 bytes at a time,
	  as per protocol specs
	- added word wrapping to debug messages
	- better I/O handling
	- fixed typos in Changes

AUTHOR
    Robert Rothenberg <rrwo at cpan.org>

COPYRIGHT AND LICENSE
    Copyright (C) 2004 by Robert Rothenberg <rrwo at 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 5.8.2 or, at
    your option, any later version of Perl 5 you may have available.