Date: Thu, 12 Jun 2003 13:44:10 +0700 (ICT) From: Olivier Nicole <Olivier.Nicole@ait.ac.th> To: bernard.dugas@is-production.com Cc: freebsd-questions@freebsd.org Subject: Re: how to talk to the serial and parallel ports through a C Message-ID: <200306120644.NAA24236@bazooka.cs.ait.ac.th> In-Reply-To: <3EE79ED4.93DB9224@is-production.com> (message from Bernard Dugas on Wed, 11 Jun 2003 23:27:49 %2B0200)
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I'll reply on the parallel port:
fd_relay=open("/dev/ppi0", O_WRONLY);
ioctl(fd_relay, PPISDATA, value)
Value being an 8 bits value.
That works wonders with the relay card from Quality Kits
http://www.qkits.com/serv/qkits/diy/pages/QK74.asp
As for the entry, as I only needed 2 contacts, I used mouse button
(plus it provides a nice testing interface, just click on your mouse
buttons :)
Olivier
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