This won't be much help since I'm using TOSBase under T1...but...
The default behavior of MICA basestations was to map incoming
micaZ 802.whatever headers to the old style mica2 headers. I once
saw mention of where/how this happens but have totally forgotten.
You might find something with an exhaustive search of this list,
looking for problems when setting "micaz" in the MOTECOM envvar.
Another way to track it down would be doing a "make docs" to get
the actual component connections, and then trace through the
whole receive path to see if you can find the header conversion.
...I don't think it is done on the UART side... Basestations for
the telos devices don't convert the header, or didn't under T1...
The ACK behavior is annoying at best. For some reason "they" didn't
want to pass ACKS through to the serial sender. I "fixed" this in
TOSBase by moving the UARTTokenReceive.ReflectToken() call from
the processUartPacket() method which forwarded a message received
over the serial port, to the RadioSend.sendDone() callback which
was called after the forwarded message was done -- and acked --
by the radio. For my uses there was always a single message in
the forward queue so the same message got acked -- I won't swear,
but I think this may be the general case since the serial port
is usually a single-user resource. Note that you also have to
enable the ACK behavior in the radio components of the basestation
code, and your re-Motes.
MS
Joaquim Oller wrote:
> Hi!
> I've been trying for several days to discover how to get BaseStation
> keeping the 802.15.4 MAC header and not substituting it with the serial
> one. Is there a way to attach MAC header just after the serial one? Data
> would be at last place.
>
>
> Furthermore, why BaseStation ignore ACKs? I've been sniffing some
> communications but there are no acks displayed but I effectively see
> them with other sniffing hardware.
>
>
> I'm using TinyOS 2.0.
> So to summarize, I would like to implement a more transparent radio to
> serial bridge without discarding acks and without losing MAC headers ;)
>
>
> Sorry if this is a basic question, just starting but I've got messed
> with all the wiring!
> Thanks a lot!
>
>
>
>
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