Hi Kim,
Yes, since the MultiHop router does not route messages away from mote 0, so I added the if (TOS_LOCAL_ADDRESS == 0) condition in the ReceiveMsg.receive() function. So, whenever the Base station receives a packet, it can find the original source address and then call the Send.send() function to send a ACK packet to the source node.
So, I would like to know how to create a packet that now has the source address (pMHMsg->originaddr) as the destination address in the TOS_Msg packet? But, first of all, can I call the Send.send() function in the packet reception handler?
Thanks,
Yogesh.
Kim Nico <[EMAIL PROTECTED]> wrote:
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 forwar! ding 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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