Wenjie,
I believe you are correct. I probably should have verified this by
looking at the code before making the statement. I had previously read
through that code, and gotten the idea that sendDone(SUCCESS) was only
signaled after an ack is received, but i guess i missed that case. It
does
Paul:
I found statement not entirely true in T-2.1.
> Once the sender receives an ack for this packet(with the ACK field set), only
> then will the sendDone function be called.
In *CC2420TransmitP*, *S_ACK_WAIT *is the state for waiting for a
pending ACK. However, after the back off timer fires
...@millennium.berkeley.edu] En nombre de Paul
Johnson
Enviado el: martes, 08 de diciembre de 2009 17:08
Para: Vikram vik76
CC: tinyos-help
Asunto: Re: [Tinyos-help] MAC acknowledgments
Vikram,
It's probably best to look at the code yourself to determine if your
platform turns on acks by defau
Vikram,
It's probably best to look at the code yourself to determine if your
platform turns on acks by default or not.
In general it is radio hardware specific, for example the CC1000 doesn't
perform MAC level acks. Other hardware such as the CC2420 have mac acks
enabled by default for unicast p
Hello,
I would like to understand better the working of acknowledgments in tinyos.
First,
Is MAC level acknowledgment implemented by default? for Unicast or
Broadcast?
I also used the PacketAcknowledgements interface. When I use call
PacketAcknowledgements.requestAck(&pkt) does it explicitly re
