On Mon, Mar 5, 2012 at 12:46 AM, Dmitry Eremin-Solenikov
<dbarysh...@gmail.com> wrote:
> John,
>
> On 04/03/12 21:38, jonsm...@gmail.com wrote:
>> On Sun, Mar 4, 2012 at 12:19 PM, Prajosh Premdas
>> <premdas.praj...@gmail.com> wrote:
>>> On Sun, Mar 4, 2012 at 9:59 PM, Felix Varghese <felixv1...@gmail.com> wrote:
>
>>>>>>> No. At this moment IEEE 802.15.4 does not qualify as a sane default,
>>>>>>> because MAC implementation is far from being complete.
>>>>>>
>>>>>> We were hoping to help you guys rectify that problem :)
>>>>>
>>>>> We really appreciate your efforts. Maybe we should meet on IRC or on ML
>>>>> to discuss your intentions, your goals and your plan. What do you think?
>>>>
>>>> We think that is a good idea!
>>>
>>> In short, we are trying to get add a 802.15.4 stack to Linux to
>>> support various radios like at86rf23x/212 cc2420/2520, support modules
>>> like ZigBit and extend support for USB based sticks. So i think we
>>> should join forces and build this stack.
>>
>> Have you considered using SOC 802.15.4 chips attached to your Linux
>> host as a way of avoiding the real-time issues? Beaconed mode is going
>> to require some difficult code on the Linux side in order to maintain
>> the tight timing requirements. Most SOC 802.15.4 chips are available
>> in USB sticks making development easy.
>>
>> An approach would be to fully implement the 802.15.4 MAC in Contiki
>> (it is partially there). Then run the MAC on a dedicated SOC 802.15.4
>> chip. Use Linux to talk to this hard MAC implementation.
>
> Implementing Full MAC in the SoC/stick/etc. code is a good idea. I had
> plans implementing some parts of that code on Freescale eval boards
> (HCS08 + MC13192 radio). I know several guys implemented some 802.15.4
> code on MC13224v boards. Probably one of the low hanging fruits would
> be to implement HardMAC support for Philips SRM 7500 dongle. It
> implements 802.15.4 protocol over USB and it is already reverse
> engineered
> (http://sourceforge.net/apps/mediawiki/srm7500-linux/index.php). However
> that remote control costs :(
>

Some more off the shelf solutions
The full mac is already implemented and the source code is available
for ARM and AVR based usb sitcks
http://www.dresden-elektronik.de/shop/cat4_33.html?XTCsid=f1a582c1645307d399c2ccc1157b175b
and Raven USb sticks
They are also available in packages with FCC certification in ZigBit
http://www.mikrocontroller.net/articles/Meshnetics_Zigbee

> --
> With best wishes
> Dmitry



-- 
Regards,

Prajosh Premdas

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