ACKs worked on mica's under TOS1. One hopes they are not broken in T2.
You do need to turn them on in the base-station as well. And they will
only work for point-to-point messages since BCAST goes to everyone.
If you are sending to a base-station you need to use it's ID in the send().
MS
DAE HEE KIM wrote:
Hi.
PacketAcknowledgements worked very well in Tossim. However, in motes. it
doesn't work.
Do I have to change some other parameter in order to use
PacketAcknowledgement in motes ?
Following is my snippet that I added PacketAcknowledgements in
BlinkToRadio..
/***************************
* Send Packet
**************************/
// send data when timer expires
event void Timer0.fired()
{
counter++;
if (!busy) {
// create new packet
BlinkToRadioMsg *btrpkt = (BlinkToRadioMsg*)(call
Packet.getPayload(&pkt, NULL));
// insert data into packet
btrpkt->nodeid = TOS_NODE_ID;
btrpkt->counter = counter;
// send packet (broadcast)
call Acks.requestAck(&pkt);
if (call AMSend.send(AM_BROADCAST_ADDR, &pkt,
sizeof(BlinkToRadioMsg)) == SUCCESS) {
dbg("BlinkToRadioC","Send %d packet\n", counter);
busy = TRUE;
// send success : Blink
call Leds.led0Toggle();
}
}
}
// finish sending
event void AMSend.sendDone(message_t *msg, error_t error) {
if (&pkt == msg) {
if (call Acks.wasAcked(msg)) {
call Leds.led2Toggle();
}
else {
call Leds.led1Toggle(); <-- led1 toggles which means not acked.
}
busy = FALSE;
}
}
Thanks in advance
--
DaeHee Kim (Danny)
Department of Computer Science, State University of NewYork at Binghamton.
Cell Phone : 1-607-321-9574
Address : 13-A Andrea Dr, Vestal, NY, 13850
email-address : [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>,
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
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--
Platform: WinXP/Cygwin
TinyOS version: 1.x, Boomerang
Programmer: MIB510
Device(s): Mica2, MicaZ, Tmote
Sensor board: homebrew
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