[Tinyos-help] tos2 message_t header

[João Paulo Amaro da Costa Luz Carneiro]

Thanks Michael,

What is then the basic header sent in every package? Is there a  
generic header used by all radios for TOS2?
Is this it (from:http://www.tinyos.net/tinyos-2.x/doc/html/tep111.html  
cc1000_header)?
nx_am_addr_t addr; //source?
nx_uint8_t length;
nx_am_group_t group;
nx_am_id_t type;

And destination, sequence number for acks? Are added in higher level  
protocols?
Also can someone tell me if TOS uses a contention mechanism such as  
RTS/CTS?
Or  maybe better just point me out where I could read about the  
implementation details (as other questions will probably come)?
Thanks. Regards,

Joao


On Jul 22, 2009, at 8:50 PM, Michael Schippling wrote:

> I think those are standard 802.14 header elements. the cc2420
> 0r 802 specs might explain them. I've never seen them used for
> anything.
>
> MS
>
> João Paulo Amaro da Costa Luz Carneiro wrote:
>> Hi all,
>> To explore the header of packets in tos2 I checked the CC2420.h
>> Can someone tell me what are the fcf and destpan fields?
>> Also, what is the dsn used for in the MAC level? Just for the acks  
>> or  for anything else?
>> Regards,
>> Joao
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