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Message-ID: <429C1E0A.3050503@ieee.org>
Date: Tue, 31 May 2005 09:19:22 +0100
From: Jason Pearce <jason DOT pearce AT ieee DOT org>
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To: Cygwin List <cygwin AT cygwin DOT com>
Subject: Re: Using Perl to access serial ports
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This is just a bit of an update.

I have got Win32::SerialPort working, at least a limited capacity.

After taking a look at the source for it, I discovered that this module 
is actually just straight Perl, and it relies on Win32::API. I have 
already been using /Reini's cut down version of this for some time, and 
so I thought this might work. And it does, at least for the simple 
functions.
ie I can set the baud rates, parity etc. Write a few bytes and read them 
back after waiting enough time for the external device to reply. This 
functionality is actually all I needed to read my precision thermometer.

Since Reini's Win32:API module does not support call backs any 
Win32::SerialPort functions that utilise the call backs will not work. I 
have not had the chance to delve into exactly what functions that is 
yet. I plan to look further into that, but I have limited time to devote 
to this - especially now main goal is achieved.

Regards,
Jason

ps. I was never able to get the /dev/com1 or /dev/ttyS1 devices working. 
I expected that I would be able to echo commands into /dev/com1 and cat 
replies from it.
///

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