Date: Tue, 02 Feb 1999 02:55:51 -0500 From: W Gerald Hicks <wghicks@bellsouth.net> To: mturpin@spel.com Cc: questions@FreeBSD.ORG Subject: Re: Serial programming Message-ID: <19990202025551L.wghicks@wghicks.bellsouth.net> In-Reply-To: Your message of "Tue, 2 Feb 1999 10:27:37 %2B0300" <199902020728.KAA09163@gate.nitek.ru> References: <199902020728.KAA09163@gate.nitek.ru>
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> From: Mark Turpin <mturpin@spel.com>
> Subject: Serial programming
>
> I'm working on a program to communicate with an Amada Punch
> Press. It communicates serial. I looked through the lists and found
> a reference to the Serial Programming Guide for POSIX compliant
> Operating Systems. So using the information I gathered there I've
> opened the serial port like this
>
> fd = open("/dev/ttyd0", O_RDWR | O_NOCTTY | O_NDELAY);
>
> Then when I go to write to the port
>
> n = write(fd, "Hello This is a test", 20);
>
> n ends up being -1. I'm running this as root, I've tried with minicom
> and it works fine.
>
> Any suggestions?
I ported qtalk from QNX to FreeBSD; It seems to work well for me and
illustrates asynch programming for Unix pretty well (YMMV)
http://www.geocities.com/ResearchTriangle/ThinkTank/8131/qtalk.tgz
Good Luck,
Jerry Hicks
wghicks@bellsouth.net
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