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testCorrC.nc
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testCorrC.nc
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#include <Timer.h>
#include "testCorr.h"
#include "BitVecUtils.h"
#include "printf.h"
module testCorrC {
uses interface Boot;
uses interface Leds;
uses interface Timer<TMilli> as Timer0;
uses interface Timer<TMilli> as Timer1; // for detecting packet loss.
uses interface Packet;
uses interface AMPacket;
uses interface AMSend;
uses interface SplitControl as AMControl;
uses interface Receive;
uses interface BitVecUtils;
}
implementation {
uint16_t seqno = 0;
uint16_t nextPkt;
uint16_t ones;
uint8_t txBv[BIT_VEC_SIZE];
uint8_t rxBv[BIT_VEC_SIZE];
bool busy = FALSE;
bool finish=FALSE;
message_t pkt;
uint8_t i;
uint8_t dup[RECORD_LEN][2]; // record the latest 10 dups.
uint16_t txCnt;
uint16_t lastPkt;
//uint8_t dup[RECORD_LEN]; // record the latest RECORD_LEN*8 packets in bit vector.
event void Boot.booted() {
call AMControl.start();
}
event void AMControl.startDone(error_t err) {
dbg("CORR", "node id: %d\n", TOS_NODE_ID);
if (TOS_NODE_ID == 0){
finish=TRUE;
txCnt=0;
for (i=0;i<BIT_VEC_SIZE;i++){ //init. the bit vector.
txBv[i] = 0xff; // 1 denotes a packet to transmit and 0 denotes a packet that has been transmitted.
rxBv[i] = 0x00;
}
}
else {
lastPkt=0;
for (i=0;i<BIT_VEC_SIZE;i++){ //init. the bit vector.
txBv[i] = 0x00;
rxBv[i] = 0xff;
}
dup[i][0] = 0; // dup counter for each packet.
}
if (err == SUCCESS) {
if (TOS_NODE_ID == 0){
call Timer0.startPeriodic(TIMER_PERIOD_MILLI);
}
else{
call Timer1.startOneShot(3*TIMER_PERIOD_MILLI); // start req.
}
}
else {
call AMControl.start();
}
}
event void AMControl.stopDone(error_t err) {
}
event void Timer0.fired() {
if (TOS_NODE_ID !=0){
return;
}
if (call BitVecUtils.indexOf(&nextPkt, 0, txBv, TOTAL_PKTS) != SUCCESS) {
printf("Send Done, total count: %d\n", txCnt);
printfflush();
dbg("CORR", "Send Done, total count: %d\n", txCnt);
call Timer0.stop();
return;
} else {
if (!busy) {
testCorrDataMsg* btrpkt = (testCorrDataMsg*)(call Packet.getPayload(&pkt, sizeof (testCorrDataMsg)));
btrpkt->nodeid = TOS_NODE_ID;
btrpkt->seqno = nextPkt;
btrpkt->counter = txCnt;
dbg("CORR", "sending %d th packet.\n", nextPkt);
printf("sending %d th packet.\n", nextPkt);
if (call AMSend.send(AM_BROADCAST_ADDR, &pkt, sizeof(testCorrDataMsg)) == SUCCESS) {
busy = TRUE;
}
call Leds.led0Toggle();
BITVEC_CLEAR(txBv,nextPkt); //sent.
}
}
}
event message_t* Receive.receive(message_t* msg, void* payload, uint8_t len) {
if (len == sizeof(testCorrDataMsg)) {
testCorrDataMsg* btrdatapkt = (testCorrDataMsg*)payload;
printfflush();
if (BITVEC_GET(rxBv,btrdatapkt->seqno) == 0){
dbg("CORR", "pkt %d dupped.\n", btrdatapkt->seqno);
printf("dup: %d\n", btrdatapkt->seqno);
printfflush();
if (btrdatapkt->counter - lastPkt < RECORD_LEN){
if (dup[btrdatapkt->counter%RECORD_LEN][0] != btrdatapkt->seqno){
dup[btrdatapkt->counter%RECORD_LEN][0] = btrdatapkt->seqno;
dup[btrdatapkt->counter%RECORD_LEN][1] = 0;
}
dup[btrdatapkt->counter%RECORD_LEN][1] ++; // this packet has been received more than once.
}
}
else {
for (i=1;i<(btrdatapkt->counter-lastPkt);i++){ // for obtaining the 0101 seq. for cal. corr.
printf("0");
}
printf("1");
lastPkt=btrdatapkt->counter;
dbg("CORR", "pkt %d received.\n", btrdatapkt->seqno);
//printf("pkt %d received.\n", btrdatapkt->seqno);
//printfflush();
BITVEC_CLEAR(rxBv,btrdatapkt->seqno); //received packet.
}
call BitVecUtils.countOnes(&ones, rxBv, TOTAL_PKTS);
if (ones == 0) {
//all packets received.
printf("all pkts received. dup list:\n");
finish = TRUE;
dbg("CORR", "all pkts received. dup list:\n**********\n");
call Leds.led2On(); // marking finish.
for (i=0;i<RECORD_LEN;i++){
if (dup[i][0]!=0){
dbg("CORR", "%d:%d, \n", dup[i][0], dup[i][1]);
printf("%d:%d, \n", dup[i][0], dup[i][1]);
}
}
dbg("CORR", "\n**********\n");
printf("\n");
printfflush();
call Leds.led0On();
}
else{
call Leds.led0Toggle();
call Timer1.stop();
call Timer1.startOneShot(3*TIMER_PERIOD_MILLI); // wait for three packets time.
}
}
if (len == sizeof(testCorrReqMsg)) {
testCorrReqMsg* btrreq = (testCorrReqMsg*)payload;
if (TOS_NODE_ID != 0){return msg;}
//transmit requested packets.
printf("receive req from %d\n", btrreq->nodeid);
for (i=0;i<BIT_VEC_SIZE;i++){
txBv[i] |= btrreq->bv[i];
}
call Leds.led2Toggle();
call Timer0.startPeriodic(TIMER_PERIOD_MILLI);
}
return msg;
}
event void Timer1.fired(){
if (TOS_NODE_ID ==0){
return;
}
//haven't received packets for 3 slots.
if (!finish){
dbg("CORR", "Not finished, Prepare req msgs for %d pkts!\n", ones);
printf("Not finished, Prepare req msgs for %d pkts!\n", ones);
printfflush();
if (!busy) {
testCorrReqMsg* btrpkt = (testCorrReqMsg*)(call Packet.getPayload(&pkt, sizeof(testCorrReqMsg)));
if (btrpkt == NULL) {
dbg("CORR","REPORT NULL\n");
return;
}
btrpkt->dest = 0;
btrpkt->nodeid = TOS_NODE_ID;
memcpy(btrpkt->bv, rxBv, BIT_VEC_SIZE);
if (call AMSend.send(AM_BROADCAST_ADDR,
&pkt, sizeof(testCorrReqMsg)) == SUCCESS) {
busy = TRUE;
}
call Leds.led1Toggle();
call Timer1.startPeriodic(3*TIMER_PERIOD_MILLI);
}
}
else {
call Timer1.stop();
printf("done\n");
printfflush();
}
}
event void AMSend.sendDone(message_t* msg, error_t error) {
if (&pkt == msg) {
busy = FALSE;
if (TOS_NODE_ID == 0){
txCnt++;
}
}
}
}