[Tinyos Core WG] Meeting: Sept 13

[henri dubois-ferriere]

Unfortunately I have to go out in a few (7.30pm here) and so will miss
the call, but here is some feedback on  TEPs 117.
Also at the end I added a small comment on TEP 101 (according to a
recent email it was supposed to be discussed today or last week i
think, not sure if this actually took place).

Henri


=============================
TEP109:

a) In general it feels a little rough and sparse. Over-verbosity is
not good, but this one maybe leans too far the other way ;)
b) Sect 2.2: Can we say a little more about the interrupt semantics?
Ie, can interrupts be nested, are they masked until the completion of
the fired() event, etc
c) Would logical pins be covered in this TEP? By "logical" pin, I mean
one that can be obtained by using a SIPO (Serial-In-Parallel-Out)
chip, ie one that is programmed with a sequence of n 0-1s and mirrors
these in n physical output ports. For the driver for one such chip
tos/chips/mm74hc595/, I export GeneralIO interfaces, but those are too
rich for this case, since such a pin can only be output and cannot be
read.
d) End of sec 2.0:
"Platform that provide GPIO capabilities MUST provide the following
HIL interfaces:
GeneralIO
GpioInterrupt"
Can this be qualified somewhat more? It might sound like it applies to
all digital I/O pins, which is not possible.

=============================
TEP 101:

Section 1, para 3:

"Therefore the highest level of ADC abstraction consists of
platform-independent interfaces for ADC data collection and
chip-specific interfaces for ADC hardware configuration. The top layer
of the ADC stack thus remains platform-dependent and consequently the
ADC abstraction does not include an HIL, but ends with the HAL."

I assume that "platform-independent" in the first phrase should be
"platform-dependent"?
Hmm, actually looking at the last sentence of the paragraph (that says
platform-independent) I am now confused. Which is it?


On 13/09/06, Philip Levis <pal at cs.stanford.edu> wrote:
> Wednesday, September 13, 2006 11:00 AM US Pacific Time
> Bridge: 5, Passcode: 0137679
>
> Numbers:
> US: 1-916-356-2663 or 1-888-875-9370 (non-Intel)
> UK: +44 1793 402663
> Denmark: +45 4527 5090
>
> Agenda:
>    Status/membership changes (Ralph Kling and Pi Peng from Crossbow)
>    TEP 117 (PLEASE READ, attached, it's short)
>    TEP 109 (new version attached)
>
>
>
>
>
>
>
>
> Phil
>
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