Date: Fri, 30 Sep 2005 12:49:42 -0500 (CDT) From: Sergey Babkin <babkin@verizon.net> To: "M. Warner Losh" <imp@bsdimp.com>, reichert@numachi.com Cc: freebsd-hackers@freebsd.org, jerry@evasefor.com Subject: Re: Re: serial login to SBC Message-ID: <16436490.1128102582153.JavaMail.root@vms071.mailsrvcs.net>
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>From: "M. Warner Losh" <imp@bsdimp.com> >In message: <20050930154306.GJ74605@numachi.com> > Brian Reichert <reichert@numachi.com> 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. -SB
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