Re: Addressing individual serial port pins - possible? - Article 68998 - go-pugleaf

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Article #68998

Re: Addressing individual serial port pins - possible?

#68998

From: Peter Disdale
Date: Wed, 17 Apr 1996 00:00

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In article <83h1fBA1z5cxEwpu@pzoptic.demon.co.uk>
	   tim@pzoptic.demon.co.uk "Tim Carter" writes:

> what I would like to do is address individual serial port pins to run an
> external device from a c or pascal program.
> eg on program command "X" pin 1 will go high (?+5V) and on command "Y"
> pin 1 will go to ground.
> Is this possible and if so how? If not serial port pins then any other
> port?

It's fairly straightforward to control directly RTS and DTR (pins 4
and 20 on a standard 25-pin connection) and to monitor various RS232
input pins (DSR, CTS etc.) using an 'out()' and 'in()' function
respectively.  Please email me with a bit more info and I'll try to
help.
--
Pete

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From: Peter Disdale <Pete@pdlmail.demon.co.uk>
Subject: Re: Addressing individual serial port pins - possible?
Date: 1996/04/17
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