Re: serial login to SBC
From: M. Warner Losh (imp_at_bsdimp.com)
Date: Fri, 30 Sep 2005 12:55:39 -0600 (MDT) To: firstname.lastname@example.org, email@example.com
In message: <16436490.1128102582153.JavaMail.firstname.lastname@example.org>
Sergey Babkin <email@example.com> writes:
: >From: "M. Warner Losh" <firstname.lastname@example.org>
: >In message: <20050930154306.GJ74605@numachi.com>
: > Brian Reichert <email@example.com> writes:
: >: On Fri, Sep 30, 2005 at 05:14:01PM +0200, firstname.lastname@example.org 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
1 2 3 4 5
6 7 8 9 10
issue for headers.
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