From owner-freebsd-questions Thu Aug 28 07:47:22 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id HAA01606 for questions-outgoing; Thu, 28 Aug 1997 07:47:22 -0700 (PDT) Received: from srv.net (snake.srv.net [199.104.81.3]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id HAA01601 for ; Thu, 28 Aug 1997 07:47:18 -0700 (PDT) Received: from darkstar.home (dialin1.anlw.anl.gov [141.221.254.101]) by srv.net (8.8.5/8.8.5) with SMTP id IAA31730; Thu, 28 Aug 1997 08:47:04 -0600 (MDT) Date: Thu, 28 Aug 1997 07:46:30 -0700 (MST) From: Charles Mott X-Sender: cmott@darkstar.home To: Ralph McCorkindale cc: freebsd-questions@FreeBSD.ORG Subject: Re: POWER DISTURBANCE ANALSER In-Reply-To: <34052EBD.2729@xtra.co.nz> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Thu, 28 Aug 1997, Ralph McCorkindale wrote: > The output from the equipment is for a serial printer, three wire, > > 0 volts > Rx (Receive) > Busy (DTR) > > Does you programme have the facility to do this. You may have to write your own software to read the serial port. This is not difficult and can be done in either DOS or FreeBSD. Probably no more than 20 lines of code. You may have to put a null modem in the serial line. Customized serial communications are always a little tricky when you are first bringing them up. You have to get tx/rx sorted out as well as all of the dtr/dsr/cd. Charles Mott