[riot-users] Communication between AT86rf233 and telosb

Peter Kietzmann peter.kietzmann at haw-hamburg.de
Fri Nov 11 15:55:37 CET 2016


Hi Robert,

which at86rf2xx-based board are you using? Your issue sounds a bit like:

https://github.com/RIOT-OS/RIOT/issues/5486.

Also you might want to look at the "pending_tx" counter introduced here:

https://github.com/RIOT-OS/RIOT/pull/5261

Best
Peter

Am 11.11.2016 um 14:48 schrieb Robert Hartung:
> Hi Peter,
> 
> I am using raw IEEE 802.15.4 frames, with no CSMA, no Autoack. I also
> have a sniffer running that shows the packets! Also I am able to receive
> some of the frames. While I have no problem between Skys there is a
> problem with our board/the at86rf233. I try to send data as quickly as
> possible at the moment. Introducting a delay helps, but it seems like a
> bit more complicated to me, as the other directions work!
> 
> Best Regards,
> Robert
> 
> On 11.11.2016 13:10, Peter Kietzmann wrote:
>> Hi Robert,
>>
>> no haven't tried that. Do you use plain 802.15.4 or 6LoWPAN/IPv6 on top?
>> In the second case, is 6LoWPAN fragmentation already active? Does the
>> problem persist when introducing a delay after sending a frame? Can you
>> check, maybe with a sniffer, if the ACK request bit is set and if ACKs
>> are sent (and received). For the first step I would recommend to disable
>> anything regarding ACK coordination. IIRC the cc2420 does not handle
>> incoming ACKs correctly.
>>
>> Best
>> Peter
>>
>> Am 11.11.2016 um 12:40 schrieb Robert Hartung:
>>> Hello *,
>>>
>>> did anyone successfully communicate between AT86RF233 and the CC2420 in
>>> a burst-like scenario? I try to send packages very fast from a telosb
>>> node to a at86-based board, but I only manage to *receive* 1 frame ...
>>> It works in the other direction. It looks like the interrupts are lost,
>>> or something within RIOT takes too long to handle interrupts..
>>>
>>> Best Regards,
>>> Robert
>>>
>>
> 

-- 
Peter Kietzmann

Hamburg University of Applied Sciences
Dept. Informatik, Internet Technologies Group
Berliner Tor 7, 20099 Hamburg, Germany
Fon: +49-40-42875-8426
Web: http://www.haw-hamburg.de/inet


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