[Tinyos-2.0wg] Concerns about ADC in 0.1mV

[Philip Levis]

On Jul 26, 2006, at 12:43 PM, Gilman Tolle wrote:

>
> At least no information is lost with left-shifted ADC readings, and
> the differences in ADC precision are still abstracted away. Although,
> we still pay the cost of the left-shift, and actual precision must be
> exposed through another interface to support the processing steps that
> care.

As a note, one conclusion from earlier discussions was that in the  
general case a ADC cannot (and should not) provide left-shifted  
readings. This led to the conclusion that the left-shifting  
requirement be removed from the SIDs TEP and be moved into the  
sensorboards TEP. Jan has an email on this July 5, and in the July 5  
telecon we agreed that this sounded like the right decomposition.  
This need for relaxation came out of tension between the initial goal  
of SIDs -- high level data acquisition interfaces -- and then their  
use in other areas of the system.

Phil