[Tinyos-devel] again about the baudrate issue for telos

Razvan Musaloiu-E. razvanm at cs.jhu.edu
Mon Feb 16 14:50:15 PST 2009


On Mon, 16 Feb 2009, Stephen Dawson-Haggerty wrote:

> I don't know what other tests people have run, but at least in my experience
> (all on linux) 115200 seems to have more dropped packets and be less stable
> when you're sending quickly.

In which direction did you see this? In my case I see dropped packets 
when I send from PC to the mote. The other direction (from the mote to PC) 
seems fine. Which is probably why many people don't have big issues with 
115200. :P

I didn't had time to do more tests beside the program that I sent at the 
beginning at this thread.

Razvan ME

> I haven't run any micro tests on this, though; I'd be happy to if 
> someone has one.  Perhaps the cygwin serial is going to be equally 
> unreliable at all rates...
> This mail thread seemed to end without resolution, so I'm also curious about
> what happened...
> Steve
> On Mon, Feb 16, 2009 at 2:09 PM, Philip Levis <pal at cs.stanford.edu> wrote:
>> On Feb 16, 2009, at 1:26 PM, Stephen Dawson-Haggerty wrote:
>>  Everybody seems to have agreed that the default msp430 uart speed should
>>> be 57600-- can somebody in core make the change?  It is definitely much more
>>> reliable at the slower baud rate...
>>> Best,
>>> Steve
>> Hold on -- I think we went over this a long long time ago, and found out
>> the problem was Cygwin, not TinyOS per se. Can someone summarize the tests
>> that have been run (read/write load, host OS)? The mail thread doesn't seem
>> to have much detail.
>> Phil

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