Hi,
I have written a very simple test app to verify the proper operation of
the acknowledgment mechanism in TinyOS (see below). The program running
on a mote with an ID > 0 sends every second a packet to the mote 0 and
toggles LED 0. If it receives an Ack, it also toggles LED 1. It appears
that:
TelosB -> TelosB: ack received
TelosB -> Iris : ack received
Iris -> Iris : ack received
But:
Iris -> TelosB: NO ack
Is there an incompatibility between the two chips? Any other known
issues? Ideas on how to solve this problem?
Cheers,
Urs
-------------------------------------
#include "test.h"
module TestC {
uses interface Leds;
uses interface Boot;
uses interface SplitControl as RadioControl;
uses interface AMSend as Send;
uses interface Timer<TMilli> as Timer;
uses interface PacketAcknowledgements as Ack;
}
implementation {
message_t rpacket;
event void Boot.booted() {
call RadioControl.start();
}
event void Timer.fired() {
error_t error;
TestMsg* msg;
call Leds.led0Toggle();
msg = (TestMsg*)call Send.getPayload(&rpacket, sizeof(TestMsg));
if(msg == NULL) {
call Leds.led2On();
return;
}
msg->data = TOS_NODE_ID;
error = call Ack.requestAck(&rpacket);
if(error != SUCCESS) {
call Leds.led2On();
return;
}
error = call Send.send(0, &rpacket, sizeof(TestMsg));
if(error != SUCCESS) {
call Leds.led2On();
}
}
event void RadioControl.startDone(error_t error) {
if(error == SUCCESS) {
if(TOS_NODE_ID > 0) {
call Timer.startPeriodic(1024);
}
} else {
call Leds.led2On();
}
}
event void Send.sendDone(message_t* msg, error_t error) {
if(error != SUCCESS) {
call Leds.led2On();
}
if(call Ack.wasAcked(msg)) {
call Leds.led1Toggle();
}
}
event void RadioControl.stopDone(error_t error) {
if(error != SUCCESS) {
call Leds.led2On();
}
}
}
-------------------------------------
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