Sniffing the serial port?

[Tony Hammitt]

Here's what Freshmeat.net came up with for 'serial port sniffer':

http://freshmeat.net/appindex/1999/09/28/938505706.html

Text of page:

Linux Serial Sniffer

SLUGer - September 28th 1999, 04:01 EST 

The Linux Serial Sniffer allows you to sniff serial data up to 460Kbs via
a Comtrol RocketPort or to 115Kbs using the standard ttyS0 and ttyS1 ports.
Sniffed output can be captured to disk or displayed directly on screen. A
user filter is included to assist specific customisation. The Linux Serial
Sniffer can selectively operate in either a "ghost mode" where there is no
data flow time impediments, or via a "capture and forward mode", where the
user can flexibily intercept and extend the data stream to suit from either
direction.
                                    
Download:
                                      
http://metalab.unc.edu/pub/Linux/apps/misc/serial_sniffer-0.5.tar.gz (530 hits)
                                      
Development Version:
               0.5
Author:
               Grahame Kelly
License:
               GPL
Category:
               Development/Debugging
Depends on:
               Using two free serial ports (ttyS0 and S1 in cli mode for example).

It's a 57K download, most of which is an encapsulated postscript file.
There's only about 15K of code, <600 lines.  Shouldn't take too long
to figure out. =-]

Regards,

Tony

Evan Hoff wrote:
> 
> been wanting to do the same myself..i find open
> source most attractive because of the fact that
> you can tell exactly how everything works..im not
> that good at c..but given the knowlege of how
> some of the underlying hardware works and some
> tricks/tinkering...i'd find the time to notch c
> onto my belt :) anyone know of any good tutorial/
> resources on serial/hardware programming?
> 
> Evan Hoff
> evanh23 at usa.net
> 
> Bradley Miller <bradmiller at dslonramp.com> wrote:
> Hmm -- I'm interested in more serial port projects, but I'm wondering what
> exactly is going down the pipe from some of my software to the various
> devices I have.  On of them is a Sharp SE-300 PDA -- which I love, but
> unfortunately it doesn't have any support on the Windows platform . . . let
> alone te Linux one.  Is there a clever way of sniffing what info is being
> sent down the COM port?
> 
> Hmm ?
> 
> -- Bradley Miller
> 
> 
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