I need a little clarification here...
TOSBase doesn't initiate any packet transmissions, its just a
bi-directional pass-through. So how are you "read[ing] packets
coming from the base node"?
Next, it's not clear if you are still running TOSBase when you
have an external node with CntToRfm. If not, you should. Neither
RfmToLeds nor CntToRfm sends anything over the UART.
If you have radio comm, you should see the LEDs toggle on TOSBase.
As long as you have compiled all the candidate programs in the same
tree with the same MakeLocal settings for radio channel and groupID,
they should talk. I don't think its a big issue with micaZ but try
building in the contrib/xbow tree instead of the regular apps tree.
Now for the real issue...multiple high speed audio data...
Not likely.
The MicaZs can handle about 100 messages per second, with the standard
29 byte payload. So you have about 2900 bytes/sec to spread around. It's
probably worse because there will be some access contention. You could
perhaps recover some B/W by increasing the message payload size, but that
will exacerbate contention and error rates.
MS
Michael Collett wrote:
Listen tool and MicaZ
I'm having some trouble reading MicaZ RF data packets using the Listen tool. I
have a mote with TOSBase installed attached to my MIB510. I can read packets
coming from the base node (address 0) so I know that the ports are correctly
selected. I also successfully implement CntToRfm and RfmToLeds, so I know that
there are messages being broadcast. No messages from the broadcasting node are
appearing when I run listen, however.
Do TOSBase or listen need to be given the message format? How would I do this?
I'm pretty sure that the frequency and group id settings all match.
My aim is to stream back high sampling rate microphone data from 7 nodes to a
pc for analysis, any recommendations on this would also be appreciated.
Cheers,
Mike
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