#!/usr/bin/perl -w
# cross-platform example3

use strict;
use vars qw( $OS_win $ob $port );

BEGIN {
        $OS_win = ($^O eq "MSWin32") ? 1 : 0;
        if ($OS_win) {
            eval "use Win32::SerialPort 0.11";
	    die "$@\n" if ($@);
        }
        else {
            eval "use Device::SerialPort";
	    die "$@\n" if ($@);
        }
} # End BEGIN

if ($OS_win) {
    $port = 'COM2';
    $ob = Win32::SerialPort->new ($port);
}
else {
    $port = '/dev/modem';
    $ob = Device::SerialPort->new ($port);
}
die "Can't open serial port $port: $^E\n" unless ($ob);

my $baud = $ob->baudrate;
my $parity = $ob->parity;
my $data = $ob->databits;
my $stop = $ob->stopbits;
my $hshake = $ob->handshake;

if ($baud) {
    $ob->baudrate($baud)	|| die "fail setting baud";
}
else {
    $baud = 9600;
    defined $ob->baudrate($baud)	|| die "fail setting baud after 0";
}

$ob->parity($parity)	|| die "fail setting parity";
$ob->databits($data)	|| die "fail setting databits";
$ob->stopbits($stop)	|| die "fail setting stopbits";
$ob->handshake($hshake)	|| die "fail setting handshake";

$ob->write_settings || die "no settings";

$baud = $ob->baudrate;
$parity = $ob->parity;
$data = $ob->databits;
$stop = $ob->stopbits;
$hshake = $ob->handshake;

print "B = $baud, D = $data, S = $stop, P = $parity, H = $hshake\n";

undef $ob;