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

[Philip Levis]

On May 19, 2008, at 10:43 AM, Andreas Koepke wrote:

> Philip Levis:
>> On May 19, 2008, at 10:12 AM, Andreas Koepke wrote:
>>> Should we go ahead and define such an interface?
>> The issue here is distinguishing failure cases. I'm leery of  
>> defining and interface where FAIL means "not acked," because it  
>> does not let the higher layer distinguish "I am broken" from "sure,  
>> retry." E.g., CTP would respond very different, with respect to  
>> retries and its link estimation, between the lower stack failing  
>> and a packet not being acked.
>> Phil
>
> Currently the only reason to fail is: "Could not access the medium  
> in time", right?

No. What if the radio does not respond properly to commands? E.g., the  
voltage is too low?

Phil