The MultiHop router does not route messages away from mote 0. The
only way I know how to send messages to the motes from mote 0 is to
use the Broadcast (Bcast) interface to flush the outgoing messages
outward to all motes, and have something inside the ack message to
indicate the intended recipient.
There have been rumors that the Bcast interface is going away, but I
have heard none regarding what is replacing it, nor when it is to be
going away other than "TinyOS 2.0".
Hope this helps,
-Kim Nico
On Tue, Jan 04, 2005 at 02:29:19PM -0800, Yogesh Iyer wrote:
> Hi,
>
> I am trying to implement end-to-end ACK's from the Base station to the source
> nodes.
>
> For the Surge application, in the MultiHopEngineM.nc routing module, the
> ReceiveMsg.receive() function is used to implement the receiving and
> forwarding functionalities. Here, I added the if (TOS_LOCAL_ADDRESS == 0)
> condition as shown below and I got the source address. Now, in this
> condition, can I call the Send.send() function for transmitting the ACK
> packet with the new destination address as the source.
>
> if (pMsg->addr == TOS_LOCAL_ADDRESS) { // Addressed to local node
> if ((signal Intercept.intercept[id](pMsg,&pMHMsg->data[0],PayloadLen))
> == SUCCESS) {
> dbg(DBG_ROUTE,"MHop: Calling the mForward function");
> pMsg = mForward(pMsg,id);
> }
> if (TOS_LOCAL_ADDRESS == 0) {
> dbg(DBG_ROUTE,"MHop: BS calling mFrwd for node %x",
> pMHMsg->originaddr);
> //call Send.send() for the ACK packet with destination as
> pMHMsg->originaddr
> }
> }
> else {
> // Snoop the packet for permiscuous applications
> signal Snoop.intercept[id](pMsg,&pMHMsg->data[0],PayloadLen);
> }
>
> Please let me know if I can call the Send.send() function in the packet
> reception handler. Will it cause any problem?
>
> If I can call the send() function, how do I create a packet now has the
> source address (pMHMsg->originaddr) as the destination address in the TOS_Msg
> packet?
>
> Can you please give some suggestions on this issue. Thanks a lot.
>
> Regards,
> Yogesh.
>
>
>
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