To be more specific, have i the right to use the combination of AMPacket and
Packet like this:
msg_request_neighbours_t* pkt = (msg_request_neighbours_t*)payload;
am_addr_t addr =call AMPacket.source(msg);
and continue with the message editing?
Thank you,
Artemis Voulkidis
National Technical Univerisity of Athens
On Mon, Oct 13, 2008 at 10:06 AM, Artemis Voulkidis <[EMAIL PROTECTED]>wrote:
>
> First of all, thank you for the quick answer!
>
> However, the main problem expressed in my previous message, is how can i
> get the am_addr_t of a received message!
>
> I should use the AMPacket interface? Can I use the AMPacket and the Packet
> interface at the same time?
>
> Again, thank you for your time,
>
> Artemis Voulkidis
>
> National Technical University of Athens
> On Sun, Oct 12, 2008 at 7:48 PM, tarun sharma <[EMAIL PROTECTED]>wrote:
>
>> I understand that you want to unicast message form a node. I have
>> implemented this in two ways in my projects based on the requirement:
>>
>> 1) if the sender knows the node to which it wants to send the message
>> and receiver doesn't know from which node it wants to receive:
>>
>> sender uses the target nodes ID to send the message:
>> call AMSend.send("the address", msg, len)
>>
>> receiver on receiving check if message is intended for itself:
>> call AMPacket.isForMe(msg)
>>
>> if it is, message is accepted
>>
>>
>>
>> 2) if sender doesn't know which node it wanted to send the message to
>> but receiver knows from which node it wants to receive:
>>
>> sender broadcasts the message:
>> call AMSend.send(AM_BROADCAST_ADDR, &pkt, len)
>>
>>
>> receiver on receiving the messages check if the sender of this message
>> was the one from which it is expecting a message:
>>
>> if(call AMPacket.source(msg)=="the address")
>>
>> if it is message is accepted
>>
>>
>>
>> On Sun, Oct 12, 2008 at 6:23 PM, Artemis Voulkidis <[EMAIL PROTECTED]>
>> wrote:
>> > Hello!
>> >
>> > I am trying to make a node send a data packet to another node, but i
>> cannot
>> > figure out how i can achieve this..
>> >
>> > For example, I have created a struct:
>> >
>> > typedef nx_struct msg_send_temp {
>> > uint8_t msg_type;
>> > uint8_t temp
>> > } msg_send_temp_t;
>> >
>> > I try to send it with the help of Packet, and AMSend interfaces like
>> this:
>> >
>> > void msg_send_temp(am_addr_t XXXXX) {
>> > msg_send_temp_t* pkt = (msg_send_temp_t*)call
>> Packet.getPayload(&packet,
>> > sizeof(msg_send_temp_t));
>> > if(pkt == NULL){
>> > return;
>> > }
>> > pkt->msg_type = (uint8_t)SEND_TEMP_MSG;
>> > pkt->temp = node_temp;
>> > call AMSend.send(XXXXX, &packet, sizeof(msg_send_temp_t));
>> > dbg("NodeC","Temp information sent, node id = %hu.\n", node_id);
>> > return;
>> > }
>> >
>> > The XXXXX written above, is supposed to be an am_addr_t of the other
>> node,
>> > whose am_addr_t needs to be taken from a Receive function like this:
>> >
>> > event message_t * Receive.receive(message_t * msg, void * payload,
>> uint8_t
>> > len){
>> > if(len == sizeof(msg_request_temp_t)){
>> > msg_request_temp_t* pkt = (msg_request_temp_t*)payload;
>> > if (pkt->msg_type == REQUEST_IS_HEAD_MSG){
>> > msg_send_temp(XXXXX); //Here i should try to get the msg's
>> am_addr_t..
>> > }
>> > return msg;
>> > }
>> >
>> >
>> > However, i cannot figure out how to take the address of the source node,
>> to
>> > correctly pass it to the msg_send_temp(am_addr_t) function..
>> >
>> > Can i use simultaneously both the AMPacket and the Packet interface?
>> >
>> > Thank you in advance for your time,
>> >
>> > Artemis Voulkidis
>> >
>> > National Technical University of Athens
>> >
>> > _______________________________________________
>> > Tinyos-help mailing list
>> > [email protected]
>> >
>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>> >
>>
>
>
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