From owner-freebsd-hackers@FreeBSD.ORG Fri Sep 30 18:57:29 2005 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 770B616A41F for ; Fri, 30 Sep 2005 18:57:29 +0000 (GMT) (envelope-from imp@bsdimp.com) Received: from harmony.bsdimp.com (vc4-2-0-87.dsl.netrack.net [199.45.160.85]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1679543D48 for ; Fri, 30 Sep 2005 18:57:29 +0000 (GMT) (envelope-from imp@bsdimp.com) Received: from localhost (localhost.village.org [127.0.0.1] (may be forged)) by harmony.bsdimp.com (8.13.3/8.13.3) with ESMTP id j8UIsvT0052085; Fri, 30 Sep 2005 12:54:57 -0600 (MDT) (envelope-from imp@bsdimp.com) Date: Fri, 30 Sep 2005 12:55:39 -0600 (MDT) Message-Id: <20050930.125539.116350804.imp@bsdimp.com> To: babkin@users.sourceforge.net, babkin@verizon.net From: "M. Warner Losh" In-Reply-To: <16436490.1128102582153.JavaMail.root@vms071.mailsrvcs.net> References: <16436490.1128102582153.JavaMail.root@vms071.mailsrvcs.net> X-Mailer: Mew version 3.3 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-2.0 (harmony.bsdimp.com [127.0.0.1]); Fri, 30 Sep 2005 12:54:58 -0600 (MDT) Cc: freebsd-hackers@freebsd.org, jerry@evasefor.com Subject: Re: serial login to SBC X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Sep 2005 18:57:29 -0000 In message: <16436490.1128102582153.JavaMail.root@vms071.mailsrvcs.net> Sergey Babkin writes: : >From: "M. Warner Losh" : : >In message: <20050930154306.GJ74605@numachi.com> : > Brian Reichert writes: : >: On Fri, Sep 30, 2005 at 05:14:01PM +0200, jerry@evasefor.com wrote: : >: > : >: > Hello list, : >: > I am trying to use a FreeBSD box to log into a Single Board Computer. I : >: > have a null modem and it's plugged to both serial : >: > ports. The SBC runs openbsd ( /dev/cua00). : >: > When I run "cu -l /dev/cuaa0" from FreeBSD, I don't get any login : >: > prompt. : >: : >: Do you have getty running on that port on the SBC? : > : >Do you have all the modem pins connected for this cable? : : Also, is the cable pin-out correct even for the Rx : and Tx pins? There are weird recombinations of : male-female and DCE-DTE pin-out used by different : manufacturers. The easiest way to check is to get : a port tester (a pass-through BOX with LEDs) from : some place like Radioshack. : : The correct Unix cable connection is : : Tx - Rx : DTR - DSR, CD : CTS - RTS : : (and the other side symmetric). Many cable : manufacturers use different (wrong) connections. Closely related is the 1 3 5 7 9 2 4 6 8 10 vs 1 2 3 4 5 6 7 8 9 10 issue for headers. Warner