[Tinyos-help] Does CTP work on Mica2 ?

[Zainul M Charbiwala]

Hi everyone,

Just wanted to post my findings on the packet behavior I was observing earlier.

 0  0:00:22.368266  ---->
74.74.AA.AA.AA.AA.AA.AA.AA.AA.AA.AA.AA.AB.BA.83  6.666 ms
 1  0:00:22.368697  <====
74.74.AA.AA.AA.AA.AA.AA.AA.AA.AA.AA.AA.AB.BA.83  6.666 ms

This packet exchange is in fact link layer acknowledgment, which is
enabled by default in the CC1000 stack. It begins in the
packetReceived() function in tos/chips/cc1000/CC1000SendReceiveP.nc.

Since it was causing me some trouble, I had to shut it off by setting
f.ack=FALSE in Init.init() in the same file.

Thanks for your help,

Zainul.


On Mon, Aug 25, 2008 at 8:55 AM, Zainul M Charbiwala <zainul at ee.ucla.edu> wrote:
> Thanks, I'll investigate with TestNetwork further and keep the group posted.
>
> Regards,
>
> Zainul.
>
> On Mon, Aug 25, 2008 at 8:28 AM, Omprakash Gnawali <gnawali at usc.edu> wrote:
>> On Sun, Aug 24, 2008 at 1:39 PM, Zainul M Charbiwala <zainul at ee.ucla.edu> wrote:
>> ...
>>
>>> 3. What is this exchange ? Is this a link layer acknowledgment ?
>>>
>>>   0  0:00:22.368266  ---->
>>> 74.74.AA.AA.AA.AA.AA.AA.AA.AA.AA.AA.AA.AB.BA.83  6.666 ms
>>>   1  0:00:22.368697  <====
>>> 74.74.AA.AA.AA.AA.AA.AA.AA.AA.AA.AA.AA.AB.BA.83  6.666 ms
>>>
>>> I'd really appreciate if anyone could point me to the component/module
>>> that generates this message. Is this part of CTP or part of the CC1000
>>> stack ?
>>>
>>
>> CTP has been tested on mica2dots which also has CC1000 radio. CTP only
>> generates two types of pkts. So this must come from somewhere else.
>> You can try running TestNetwork application which can give you more
>> debugging information. If you run TestNetwork, each mote will send
>> debug message on the UART.
>>
>> - om_p
>>
>