Re: Simple protocol analyzer?

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From	Grant Edwards <invalid@invalid.invalid>
Newsgroups	comp.arch.embedded
Subject	Re: Simple protocol analyzer?
Date	Wed, 7 Aug 2013 15:15:45 +0000 (UTC)
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On 2013-08-07, Grant Edwards <invalid@invalid.invalid> wrote:
> On 2013-08-07, Clifford Heath <no.spam@please.net> wrote:
>> On 07/08/13 04:48, Grant Edwards wrote:
>>> If you want the timestamp for the start of the line, it's a bit more
>>> complicated:
>>>    #!/usr/bin/python
>>>    import serial,time
>>>    p = serial.Serial('/dev/ttyS1', 9600)
>>>    while 1:
>>>        first = p.read(1)
>>>        stamp = time.time()
>>>        rest = p.readline()
>>>        print stamp, first+rest
>>
>> Does Python's serial object put the line into raw mode so you can get 
>> the first character before the linefeed is sent? or did you miss that?
>> Just curious, not nit-picking.
>
> Yes.  The port defaults to raw mode (8,none,1).  The author of
> pyserial is an embedded systems developer who (I believe) wrote it to
> support a set of tools used for downloading/testing/debugging
> microcontroller-based widgets that had serial ports.  Since that's
> mainly what I use it for, I find pyserial pretty much always defaults
> to doing the "right" thing.

I forgot to post a link to the pyserial project:

http://pyserial.sourceforge.net/

Pyserial isn't part of the Python standard library, but I think most
Linux distros have a package for it -- even if they don't, installing
only requires a couple commands.

-- 
Grant Edwards               grant.b.edwards        Yow! PARDON me, am I
                                  at               speaking ENGLISH?
                              gmail.com

Thread

Simple protocol analyzer? Tim Wescott <tim@seemywebsite.really> - 2013-08-06 11:54 -0500
  Re: Simple protocol analyzer? Grant Edwards <invalid@invalid.invalid> - 2013-08-06 17:17 +0000
    Re: Simple protocol analyzer? Tim Wescott <tim@seemywebsite.really> - 2013-08-06 13:00 -0500
      Re: Simple protocol analyzer? Grant Edwards <invalid@invalid.invalid> - 2013-08-06 18:48 +0000
        Re: Simple protocol analyzer? Tim Wescott <tim@seemywebsite.really> - 2013-08-06 14:33 -0500
          Re: Simple protocol analyzer? Frank Buss <fb@frank-buss.de> - 2013-08-07 14:52 +0200
          Re: Simple protocol analyzer? Les Cargill <lcargill99@comcast.com> - 2013-08-07 08:06 -0500
          Re: Simple protocol analyzer? Grant Edwards <invalid@invalid.invalid> - 2013-08-07 14:48 +0000
          Re: Simple protocol analyzer? rickman <gnuarm@gmail.com> - 2013-08-07 23:25 -0400
            Re: Simple protocol analyzer? John Devereux <john@devereux.me.uk> - 2013-08-08 08:44 +0100
              Re: Simple protocol analyzer? Grant Edwards <invalid@invalid.invalid> - 2013-08-08 12:57 +0000
        Re: Simple protocol analyzer? Clifford Heath <no.spam@please.net> - 2013-08-07 22:42 +1000
          Re: Simple protocol analyzer? Grant Edwards <invalid@invalid.invalid> - 2013-08-07 15:02 +0000
            Re: Simple protocol analyzer? Grant Edwards <invalid@invalid.invalid> - 2013-08-07 15:15 +0000
            Re: Simple protocol analyzer? Clifford Heath <no.spam@please.net> - 2013-08-08 08:50 +1000

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