Again, try actually reading data from the port in Perl.

Note that you may need to change the read_interval, read_char_time, and/or read_const_time settings in case you experience timeout problems.

Is your serial monitor a hardware device or a software on the PC? If it's the former, then your problem is indeed strange and I'd suspect incorrect settings or flow control issues somewhere. If it's the latter, then there might still be some driver issues going on preventing you from seeing things in your serial port monitor.

Lastly, see if you can get your PC and your Perl script talking to a different piece of hardware, such as a second PC running HyperTerminal or TeraTerm or similar.

In reply to Re^3: Serial Port win32 module by Anonymous Monk
in thread Serial Port win32 module 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.