On Tuesday 12 October 2004 09:57, Neil Marjoram wrote:
> Has anyone got any software that can monitor all data from a
> serial port?
>
> I have looked around and found a couple of projects, but I can't
> find anything that can time stamp the data as well as log it.
>
> I am currently looking at slsnif-0.4.3, which seems to be able to
> do it only I am getting an error :
>
> Serial Line Sniffer. Version 0.4.3
> Copyright (C) 2001 Yan Gurtovoy (ymg@xxxxxxxxxxxxx)
>
> Failed to open a pty: No such file or directory
>
> Can anyone tell me what this may be?
>
> I am in a race with an MS system to deliver the output - the
> project found the Winblows box to be unreliable (funny that!),
> and big mouth here said why don't you use a proper system!
>
> Thanks,
>
> Neil.
>
You didn't say, but if your serial communication is based on lines
of text you can easily use something like tclsh or expect as
follows:
############## serial_capture.sh ##############
#!/usr/bin/expect
proc Reader { pipe } {
global done
if {[eof $pipe]} {
catch {close $pipe}
set done 1
return
}
gets $pipe line
set tagxmitdate [clock seconds]
#puts $line $tagxmitdate
puts "$tagxmitdate $line"
}
set pipe [open "|cat /dev/ttyS0" r]
fileevent $pipe readable [list Reader $pipe]
vwait done
####### End serial_capture.sh #########
This was done on FC1 with expect:
$rpm -qa expect
expect-5.39.0-96.0.1
The line with "set pipe" shows ttyS0 but you can specify which
serial device you want to use. The output will be as follows:
$./serial_capture.sh
1097638625 Line 1
1097638625 Line 2
1097638625 Line 3
1097638625 etc...
which shows the number of seconds since Jan 01, 1970 for each line
of text your received. In order to save this to a file simply
redirect the output: i.e.
$./serial_capture.sh > serial.log
Regards, Mike Klinke
