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#!/usr/bin/perl
# Copyright (C) 2000-2012 Curt Mills, WE7U
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
#
# This script will ask for a name, then create a file
# with that name + ".log" in the ~/.xastir/logs directory. The
# file will contain APRS items created from the downloaded Garmin
# waypoints. Reading that log file with Xastir will result in one
# item appearing on the map screen for each waypoint, labeled with
# the name of that waypoint.
# This script uses the GPS::Garmin module which can be obtained
# from http://sourceforge.net/projects/perl-gps/
use GPS::Garmin;
use IO::File;
# Flush STDOUT
$| = 1;
# Hard-coded "from" callsign name. This becomes the "sending"
# callsign for the APRS Items.
$from = "SAR";
# Ask for the name. This gets changed into the complete log file name.
printf("\n\nEnter name for file: '.log' will get added to the end:\n\n");
$name = <>;
chomp $name;
if (length($name) < 1) {
die "Must be at least one character!\n";
}
$filename = "~/.xastir/logs/$name.log";
# Get rid of spaces in the filename
$filename =~ s/\s+//g;
# Expand the tilde into the home directory
$filename =~ s{ ^ ~ ( [^/]* ) }
{ $1
? (getpwnam($1))[7]
: ( $ENV{HOME} || $ENV{LOGDIR}
|| (getpwuid($>))[7]
)
}ex;
printf("\nThe output filename will be: ($filename)\n\n");
printf("Connect Garmin GPS to /dev/ttyS0 (COM1), set it to Garmin/Garmin mode.\n");
printf("Press <ENTER> to proceed with download, Ctrl-C to abort\n");
<>;
# Create a file to hold the data
$output = IO::File->new("> $filename")
or die "Couldn't open $filename for writing: $!\n";
$gps = new GPS::Garmin( 'Port' => '/dev/ttyS0',
'Baud' => 9600,
) or die "Unable to connect to receiver: $!";
# Transfer waypoints:
$i = 0;
$gps->prepare_transfer("wpt");
while ($gps->records)
{
($title,$lat,$lon,$desc) = $gps->grab;
#printf("%f\t%f\t%s\t%s\n",$lat,$lon,$desc,$title);
if ($lon < 0) {
$londeg = sprintf("%d",-$lon);
$lonmin = (-$lon - $londeg) * 60;
$lonchar = "W";
}
else {
$londeg = sprintf("%d",$lon);
$lonchar = "E";
$lonmin = ($lon - $londeg) * 60;
}
if ($lat < 0) {
$latdeg = sprintf("%d",-$lat);
$latmin = (-$lat - $latdeg) * 60;
$latchar = "S";
}
else {
$latdeg = sprintf("%d",$lat);
$latmin = ($lat - $latdeg) * 60;
$latchar = "N";
}
chomp $title;
if (length($title) < 1) {
die "Must be at least one character!\n";
}
if (length($title) > 9) {
$title =~ s/(.{9}).*/\1/; # Terminate it at 9 chars
}
if (length($title) < 3) {
$title = $title . " "; # Pad the title with spaces
$title =~ s/(.{3}).*/\1/; # Terminate it at 3 chars
}
# We need to enforce the naming restrictions for APRS Items. '!'
# and '_' are not allowed, anything else that's printable ASCII is
# ok.
@j = split(//, $title);
for ($k = 0; $k < length($title); $k++) {
#printf("$k $j[$k]\n");
if ( ($j[$k] lt ' ')
|| ($j[$k] gt '~')
|| ($j[$k] eq '!')
|| ($j[$k] eq '_') ) {
$j[$k] = ' ';
}
}
$title = join("",@j);
# Write an APRS Item for each waypoint
printf($output "%s>APRS:)%s!%02d%05.2f%s/%03d%05.2f%s%s\n",
$from,
$title,
$latdeg,
$latmin,
$latchar,
$londeg,
$lonmin,
$lonchar,
"/");
if (! ($i % 10) ) {
printf("$i ");
}
$i++;
}
printf("\n\nThe data has been saved in: ($filename)\n");
printf("Please open this logfile with Xastir to display the waypoints.\n");
printf("!!!Remember to set your GPS back to NMEA mode for APRS!!!\n");
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