From owner-freebsd-questions@FreeBSD.ORG Fri Apr 18 08:21:16 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8E9AC37B401 for ; Fri, 18 Apr 2003 08:21:16 -0700 (PDT) Received: from galilee.polands.org (CPE-24-208-57-240.new.rr.com [24.208.57.240]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7DAF343FA3 for ; Fri, 18 Apr 2003 08:21:15 -0700 (PDT) (envelope-from doug@polands.org) Received: from email.polands.org (samaria.polands.org [172.16.1.17]) by galilee.polands.org (8.12.9/8.12.9) with SMTP id h3IFKs0k006734; Fri, 18 Apr 2003 10:20:54 -0500 (CDT) (envelope-from doug@polands.org) Received: from 63.104.35.130 (proxying for 164.5.45.79) (SquirrelMail authenticated user djp) by email.polands.org with HTTP; Fri, 18 Apr 2003 10:21:09 -0500 (CDT) Message-ID: <20862.63.104.35.130.1050679269.squirrel@email.polands.org> In-Reply-To: References: <54733.63.104.35.130.1050676381.squirrel@email.polands.org> Date: Fri, 18 Apr 2003 10:21:09 -0500 (CDT) From: "Doug Poland" To: barbish@a1poweruser.com User-Agent: SquirrelMail/1.4.0 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 X-Priority: 3 Importance: Normal cc: questions@freebsd.org Subject: RE: help testing serial port X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Apr 2003 15:21:16 -0000 JoeB said: > Doug said: > > > >I'm trying to hook up an APC SmartUPS to a 16450 serial port on an > >old 80486. The box is running 4.8-STABLE and is otherwise > >up-to-date. > > > >apcupsd is telling me that it cannot communicate with the UPS via > >the serial port. Both the cable and UPS are fine, I can commuicate > >with the UPS with the same cable on another 80486 with a 16550A > >serial port. Also, the apcupsd.conf has been successfully tested > >on another machine. > > > >How can I test the serial port itself to see if it's working? I > >tried cu -s 2400 -e -o -h -l /dev/cuaa0 and said it was connected. > >I exited cu but now cannot attach ( cu: /dev/cuaa0: Line in use ). > >Obviously I don't understand the fundamentals and tools necessary > >to communicate with a serial port. The handbook and list archives > >haven't been much help. > > > >Could someone point me to a FAQ/archive/tutorial on how to debug a > >serial port? > > > > Check the motherboard setup bios and make sure you have the serial > ports active. > Thanks, I'll do that. -- Regards, Doug