[Tinyos-help] Why is sendDone() called twice?

[Tarun Bansal]

I am using TOSSIM environment with TinyOS 1.1.11 and CC1000 stack

Tarun

On 11/7/06, Philip Levis <pal at cs.stanford.edu> wrote:
> On Nov 7, 2006, at 12:10 AM, Tarun Bansal wrote:
>
> > I was examining the behavior of sendDone() after sending a packet over
> > radio (in TOSSIM environment). I noticed that it is being called twice
> > for every packet sent.
> >
> > If I send the pkt to an actual address, both sendDone()'s  have their
> > ack flag up.
> > However if the pkt is sent to a fictitious mote, the flag is first up
> > and second time down.
> >
> > Can you please explain this behaviour and how do I interpret these
> > readings?
> > Also should I expect the same behaviour on real Mica2 motes?
>
> TinyOS 1.x or 2.x?
>
> If 1.x, default radio stack, CC1000 stack or CC2420 stack?
>
> Phil
>