[Tinyos-devel] [Tinyos Core WG] TEP105: LowPowerListening DutyCycles

[Philip Levis]

On May 19, 2008, at 3:17 AM, Vlado Handziski wrote:

>
> The problem here is that the AM abstraction has traditionally been  
> understood as a "best-effort" or unreliable single-hop service.  
> Thats why the semantics of the result values are like they are. If  
> we want to push a traditional LL/MAC stack organization below AM,  
> these assumptions would need to be revisited, but this is the source  
> of some of the confusion about the LPL control also.

That's right; if one wanted different sendDone semantics (e.g.,  
SUCCESS on ack), one could write a ReliableAMSend interface whose  
implementation calls enableAck on the send downcall, and checks for  
wasAcked on the event upcall, passing FAIL on the sendDone if it  
wasn't acked.

Phil