use Win32::SerialPort;
use strict;
use warnings;

$| = 1; #enable autoflush

my $PortName = "COM3";
my $sendData = "12345678";

### SERIAL PORT SETUP ###
my $PortObj = new Win32::SerialPort($PortName) or die "Can't open $Por
+tName: $^E\n";
 $PortObj->error_msg(1);  # prints hardware messages like "Framing Err
+or"
  $PortObj->user_msg(1);   # prints function messages like "Waiting fo
+r CTS"

$PortObj->baudrate(57600);
$PortObj->parity("none");
$PortObj->databits(8);
$PortObj->stopbits(1);
$PortObj->handshake("none");
$PortObj->write_settings or die "failed to write_settings";
 
my $count_out = $PortObj->write($sendData) or die "write failed: $^E";
 sleep(3);
$PortObj->close() || warn "\nClose failed\n";

[download]
now i have the following error "write failed:the handle is invalid at test2.pl line 23." Other info : iam using Virtual serial port driver 7.2 by eltima software. i use a tool called teraterm where i can send data on one port and receive on other port without any issues. but perl gives the problem :( thanks for your prompt response. jis

In reply to Re^4: Virtual COM port write by jismake
in thread Virtual COM port write by jismake

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.