awesome, thanks for the help.

That clears up a lot.

What about the serial packet? does it have the same sized payload size (does
it use TOS_DATA_LENGTH)?


Mike.

On Mon, Sep 22, 2008 at 8:02 PM, Eric Decker <[EMAIL PROTECTED]> wrote:

>
> As stored in memory, there is first header information, then space for the
> maximum size
> data field (set to 28, TOS_DATA_LENGTH), and then meta data.    The data
> field is indeed
> variable but its space in memory isn't
>
> eric
>
> On Mon, Sep 22, 2008 at 6:01 PM, Michael von Hauff <
> [EMAIL PROTECTED]> wrote:
>
>> hmmm,
>>
>> I thought the payload of the radio packet was variable.
>>
>> So what you are saying is that it is fixed at whatever the TOS_DATA_LENGTH
>> is set to?
>>
>>
>>
>> On Mon, Sep 22, 2008 at 4:48 PM, Greg Hackmann <[EMAIL PROTECTED]>wrote:
>>
>>> Michael von Hauff wrote:
>>>
>>>> I think that some of the metadata is missing (or I am expecting more
>>>> than what is there!)
>>>>
>>>> here is the output using Listen.
>>>> 00 00 60 00 00 1C 00 04 12 41 88 2D 22 00 FF FF 01 00 06 00 01 FF FF C9
>>>> D2 06 EB 00 00 00 00 00 00 00 00 00
>>>> 00 00 60 00 00 1C 00 04 12 41 88 2E 22 00 FF FF 01 00 06 00 01 FF FF C9
>>>> D1 06 EB 00 00 00 00 00 00 00 00 00
>>>> 00 00 60 00 00 1C 00 04 12 41 88 2F 22 00 FF FF 01 00 06 00 01 FF FF C9
>>>> D0 06 EB 00 00 00 00 00 00 00 00 00
>>>> 00 00 60 00 00 1C 00 04 12 41 88 30 22 00 FF FF 01 00 06 00 01 FF FF C9
>>>> CF 06 EC 00 00 00 00 00 00 00 00 00
>>>>
>>>> everything after the count down value (FF FF C9 D2 on first line) should
>>>> be the metadata i think (I expected some extra zeros because my serial
>>>> payload is bigger than the radio packet).
>>>>
>>>
>>> None of the metadata is being copied into the serial packet.  You're
>>> dumping the first 28 bytes of the message_t structure, so what you're seeing
>>> is the 11-byte cc2420_header_t followed by the first 17 bytes of payload
>>> data (out of 28).
>>>
>>> Greg Hackmann
>>>
>>
>>
>> _______________________________________________
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>> [email protected]
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>>
>
>
>
> --
> Eric B. Decker
> Senior (over 50 :-) Researcher
> Autonomous Systems Lab
> Jack Baskin School of Engineering
> UCSC
>
>
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