From owner-freebsd-questions Mon Nov 9 16:31:05 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id QAA14788 for freebsd-questions-outgoing; Mon, 9 Nov 1998 16:31:05 -0800 (PST) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from resnet.uoregon.edu (resnet.uoregon.edu [128.223.144.32]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id QAA14745 for ; Mon, 9 Nov 1998 16:30:54 -0800 (PST) (envelope-from dwhite@resnet.uoregon.edu) Received: from localhost (dwhite@localhost) by resnet.uoregon.edu (8.8.8/8.8.8) with ESMTP id QAA14054; Mon, 9 Nov 1998 16:30:22 -0800 (PST) (envelope-from dwhite@resnet.uoregon.edu) Date: Mon, 9 Nov 1998 16:30:22 -0800 (PST) From: Doug White To: abimana cc: freebsd-questions@FreeBSD.ORG Subject: Re: How to Set the TX line at -12 v (High) on a serial line In-Reply-To: <36404890.6A631CFF@cids.org.za> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Wed, 4 Nov 1998, abimana wrote: > I am writting a code for a UPS and would like to use the TX line on a > FreeBSD machine serial port as the reference level for the UPS. Do > someone know how to set permanently to 1 the TX line ? . The hack^H^H^H^Hsolution I've seen is to send a break or a series of NULs; hopefully the device doesn't notice the intercharacter delay :) Doug White Internet: dwhite@resnet.uoregon.edu | FreeBSD: The Power to Serve http://gladstone.uoregon.edu/~dwhite | www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message