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Date: Wed, 6 Aug 2014 10:45:36 -0600 (MDT)
From: Warren Block <wblock@wonkity.com>
To: Julien Cigar <jcigar@ulb.ac.be>
Subject: Re: switch serial connection
In-Reply-To: <20140806063017.GE74890@mordor.lan>
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References: <20140804114628.GA74890@mordor.lan>
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 (wonkity.com [127.0.0.1]); Wed, 06 Aug 2014 10:45:38 -0600 (MDT)
Cc: steve@sliderule.demon.co.uk, freebsd-questions@freebsd.org,
 g.lister@nodeunit.ch
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On Wed, 6 Aug 2014, Julien Cigar wrote:
> On Wed, Aug 06, 2014 at 05:12:38AM +0000, g.lister@nodeunit.ch wrote:
>>>
>>> nop :( doesn't work, the screen just "hangs" ..
>>> is there a tcpdump-like tool to debug a serial connection?
>>
>> Is this the correct speed (baud rate) for the connection?
>
> Yes (if I can trust the manual..)

Make certain both ends of the connection are expecting the same type of 
handshaking, either hardware or software.  The cable may also be 
suspect, because requirements vary for how DTR/DSR and other signals are 
wired.  The simplest is software handshaking and a three or four-wire 
cable.  That cable might still need pins tied together on one or both 
ends, depending.