Date: Mon, 01 Feb 1999 20:28:12 -0500 From: Mark Turpin <mturpin@spel.com> To: questions@FreeBSD.ORG Subject: Serial programming Message-ID: <36B654AC.8489301D@spel.com>
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Hello,
Ok, I feel really stupid having to ask this..
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?
Thanks
Mark
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