Działa:
  event void Timer0.fired() {
    counter++;
    call Leds.led0Toggle();
    if (!busy) {
      BlinkToRadioMsg* btrpkt =
        (BlinkToRadioMsg*)(call Packet.getPayload(&pkt, sizeof(BlinkToRadioMsg)));
      if (btrpkt == NULL) {
        return;
      }
      btrpkt->nodeid = TOS_NODE_ID;
      btrpkt->counter = counter;
      if (call AMSend.send(AM_BROADCAST_ADDR,
          &pkt, sizeof(BlinkToRadioMsg)) == SUCCESS) {
        busy = TRUE;
      }
    }
  }

Nie kompiluje sie:
  event void Timer0.fired() {
    counter++;
    if (!busy) {
      call Leds.led0Toggle();
      BlinkToRadioMsg* btrpkt =
        (BlinkToRadioMsg*)(call Packet.getPayload(&pkt, sizeof(BlinkToRadioMsg)));
      if (btrpkt == NULL) {
        return;
      }
      btrpkt->nodeid = TOS_NODE_ID;
      btrpkt->counter = counter;
      if (call AMSend.send(AM_BROADCAST_ADDR,
          &pkt, sizeof(BlinkToRadioMsg)) == SUCCESS) {
        busy = TRUE;
      }
    }
  }