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 ----------------------------------------------------------------------------- Mark Turpin | Consulting - Training - Network Installation Systems Engineer | Main Street Technology Centre | http://www.MainStreetTech.com ----------------------------------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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