Hi,
I am developing an application that needs to use both singlehop and
multihop communications. Each node will talk to its 1 hop neighbors
using singlehop radio communication. For that purpose I am using
ActiveMessageC component, so I can send and receive different type of
messages. This part of the application works ok.
Now, I need to transmit some results from each node to a BS. For that
purpose (since BS can be far from nodes in the network), I am planning
to use Collection protocol. I have implemented both
Collection.sendDone and Collection.receive and I call Collection.Send
when need to transmit to the BS (defined as root by
RootControl.setRoot). The thing is that I have a compilation warning
when compiling both for motes or TOSSIM:
- make micaz
nesc1: warning: calls to Receive.receive in
CC2420ActiveMessageP fan out, but there is no combine function
specified for the return type
- make micaz sim
nesc1: warning: calls to Receive.receive in
TossimActiveMessageC fan out, but there is no combine function
specified for the return type
If I try to run the application, I am correctly receiving singlehop
messages, but I don't receive any Collection messages. Furthermore,
Collection.sendDone is not fired. I have looked if Collection message
type appears both in Radio.sendDone or Radio.receive events, but they
don't.
So, I am wondering whether this is an error in my implementation or it
is not possible to have both singlehop and collection radio
communications in TinyOS (I am using the latest CVS version).
Thanks in advance,
Iñigo
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