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Message: 7
Date: Mon, 25 Sep 2006 20:20:30 -0700
From: Philip Levis <[EMAIL PROTECTED]>
Subject: Re: [Tinyos-help] How to use ACK in TOSSIM
To: Michael Schippling <[EMAIL PROTECTED]>
Cc: tinyos-help_list <tinyos-help@millennium.berkeley.edu>
Message-ID: <[EMAIL PROTECTED]>
Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed
On Sep 25, 2006, at 7:44 PM, Michael Schippling wrote:
I'm not entirely certain that ACKs work in TOSSIM, like rssi....
ACKs work in TOSSIM. The default (TR1000) radio stack actually
emulates the ACK bit pattern, etc. I do not know about the CC1000
stack from Harvard or the CC2420 stack in beta/. In particular, I
don't know what the ACK loss model is.
ACKs do not work for the CC1000 in TOSSIM by default. A co-worker and I
have a corrected version, in which the ACKs work, if there is interest.
In addition to correcting ACKs, we have set sendDone to return FAIL on
non-broadcast messages if an ACK is not received. This seems much more
intuitive.
Doug
--
__
Douglas R Herbert
SeNDOR Research Group
Center for Wireless Systems and Applications
Dept. of Electrical and Computer Engineering
Purdue University
Mailbox: 465 Northwestern Ave. #158
West Lafayette, IN 47907
Lab: Physics Building, Rm. 50
Lab Phone: 765-494-3010
Email: drh - at - purdue.edu
Site: http://shay.ecn.purdue.edu/~herbertd
Site: http://shay.ecn.purdue.edu/~sendor
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