[Tinyos Core WG] meeting: 5/20

[Jan Hauer]

Notes are on the wiki: http://tinyos.stanford.edu:8000/TinyOS_2.x_WG/05.20.2009

Jan

On Wed, May 20, 2009 at 9:09 AM, Philip Levis <pal at cs.stanford.edu> wrote:
>
> Wednesday, May 20, 2009, 09:30 AM US Pacific Time
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> Agenda:
>   Membership: Tinynode maintenance transfer to Yannick Weibel
>   Membership: Steve Ayers (shimmer2, details follow)
>   Packet interfaces (Miklos + Jan + everyone)
>
> Shimmer 2:
>
> hi phil,
>
> as a co-creator of the shimmer* platforms, my commitment is ongoing,
> so i can definitely grant you all one year with an open-ended renewal!
>
> by way of background:
>
> colleague ben kuris and i -- ben does board/hardware design and
> manages manufacturing, i do the rest -- have been doing designs of
> msp430-class platforms since 2003.  we were at hplabs/cambridge
> research lab then -- a larger project group then -- and turned to
> tinyos in '04 to make sense of platform/module portability (with a bit
> of a nudge from matt welsh, fer sher).
>
> the tos-1.x/contrib/handhelds tree grew from those efforts, arriving
> as a rather large collection of capabilities en masse in august 2005.
>
> the first shimmer appeared in spring '06, and was added to the tos-1.x
> repository that august.  i have been the contrib/handhelds czar since,
> and have presided over all platform-related development and maintenance.
>
> i guess at this point, this is the only actively maintained part of
> v1, for which i support users in about 20 countries through both
> konrad's shimmer-users list and keeping a close eye on tinyos-devel
> for any shimmer-related questions that pop up.
>
> i'm adding support for tos-2.x at this point because, well, it's
> overdue and i'm finally able to make the effort; luckily, i can
> leverage konrad's work putting the base platform into v2.  we also
> have other users who are beginning to use tos-2.x, so i'm going to
> jump in now with the next rev of shimmer (which i released to v1 in
> jan '08).  guess you could say we're putting our stake in the ground.
>
> short-term (spring into early summer) plans are to bring v2 support up
> to v1 snuff, adding bluetooth and support for a number of daughter
> cards.  i also have an implementation of fat fs that i'm now testing,
> so this will go to v1 first (have to support those users now, then
> immediately to v2).
>
> i also plan to migrate to v2 a now quite-mature tcp/ip with-all-of-the-
> toys implementation done by andy christian back at crl as soon as the
> dust settles.
>
>
> shimmer and shimmer2 are low power wearable sensing platforms targeted
> at health applications and research.  the key features are:
>
> - 8MHz Texas Instruments MSP430 CPU (10Kbyte RAM, 48Kbyte Flash, 8
> Channels of 12 bit A/D)
> - Class 2 Bluetooth radio
> - 2.4GHz IEEE 802.15.4 Chipcon wireless transceiver
> - 3-Axis Freescale accelerometer
> - MicroSD slot for up to 2Gbyte
> - Integrated Li-Ion battery management
> - Extension connectors (Internal and external) for application
> customization
>
> shimmer2's main feature upgrades are a soft power switch, and an mcu-
> bypass mechanism for the micro-sd card when docked, which speeds data
> transfers by three orders of magnitude over conventional serial
> transfers.
>
> it is available through the live e-commerce site at http://www.shimmer-research.com
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