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Message-ID: <4294DDCE.6020506@x-ray.at>
Date: Wed, 25 May 2005 22:19:26 +0200
From: Reini Urban <rurban AT x-ray DOT at>
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To: Jason Pearce <jason DOT pearce AT ieee DOT org>
CC: Cygwin List <cygwin AT cygwin DOT com>
Subject: Re: Using Perl to access serial ports
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Jason Pearce schrieb:
> There was some recent discussion about serial ports and Perl.
>    http://sourceware.org/ml/cygwin/2005-05/msg00013.html
> 
> But I did not see any resolution.
> Did anyone end up porting either Win32::SerialPort or Win32API::CommPort 
> as Reini suggested?
> 
> I need to talk to a thermometer via a serial link. The protocol is not 
> very complex.
> Could I just use a system call to stty to set the baudrate and then pipe 
> the thermometer comand to /dev/ttyS0 and read the response from 
> /dev/ttyS0 using file handles?
> 
> Reini - you suggested adding cygwin support for Device::SerialPort would 
> be the easiest route. Do you still recommend this? 

Sure.

> I am not very 
> familiar with Windows API library, but could I just use Win32::API to 
> call some already existing entry points in Windows?

Uaing .xs is usually easier than using an FFI i.e. Win32::API.
And Win32::API doesn't compile out of the box on cygwin.
I have a stripped version without callback support at my site, but using 
xs is better.
If you really want an FFI I recommend FFI over Win32::API by far.

-- 
Reini Urban
http://xarch.tu-graz.ac.at/home/rurban/
http://phpwiki.org/

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