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DelugeM.nc
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DelugeM.nc
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// $Id: DelugeM.nc,v 1.58 2005/09/01 22:01:09 jwhui Exp $
/* tab:2
*
*
* "Copyright (c) 2000-2005 The Regents of the University of California.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice, the following
* two paragraphs and the author appear in all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
*
*/
/**
* @author Jonathan Hui <[email protected]>
*/
module DelugeM {
provides {
interface StdControl;
}
uses {
interface Crc;
interface DelugeMetadata as Metadata;
interface DelugePageTransfer as PageTransfer;
interface Leds;
interface InternalFlash as IFlash;
interface NetProg;
interface Random;
interface ReceiveMsg as ReceiveAdvMsg;
interface SendMsg as SendAdvMsg;
interface SharedMsgBuf;
interface SplitControl as MetadataControl;
interface StdControl as PageTransferControl;
interface Timer;
#ifndef PLATFORM_PC
interface Bcast;
#endif
}
}
implementation {
enum {
DELUGE_NUM_TIMERS = DELUGE_NUM_IMAGES,
};
enum {
S_INITIALIZING,
S_STARTED,
S_STOPPED,
};
uint8_t state;
uint8_t rebootDelay;
uint8_t curImage;
bool imagesLoaded;
DelugeAdvTimer advTimers[DELUGE_NUM_TIMERS];
DelugeNodeDesc nodeDesc;
int findMinTimer() {
int minTimer = 0;
int i;
for ( i = 1; i < DELUGE_NUM_TIMERS; i++ ) {
if (advTimers[i].timer < advTimers[minTimer].timer)
minTimer = i;
}
return minTimer;
}
void setupAdvTimer(int timerNum) {
int minTimer;
advTimers[timerNum].timer = (uint32_t)0x1 << (advTimers[timerNum].periodLog2-1);
advTimers[timerNum].timer += call Random.rand() & (advTimers[timerNum].timer-1);
advTimers[timerNum].overheard = 0;
minTimer = findMinTimer();
call Timer.stop();
call Timer.start(TIMER_ONE_SHOT, advTimers[minTimer].timer);
}
void updateTimers(int minTimer) {
int i;
for ( i = 0; i < DELUGE_NUM_TIMERS; i++ ) {
if ((advTimers[i].timer - 2) >= advTimers[minTimer].timer)
advTimers[i].timer -= advTimers[minTimer].timer;
}
}
void resetTimer(int i) {
if ( i < DELUGE_NUM_IMAGES &&
advTimers[i].periodLog2 != DELUGE_MIN_ADV_PERIOD_LOG2 ) {
advTimers[i].periodLog2 = DELUGE_MIN_ADV_PERIOD_LOG2;
setupAdvTimer(i);
}
}
void checkReboot() {
DelugeImgDesc* imgDesc = call Metadata.getImgDesc(nodeDesc.imgNum);
if ( nodeDesc.uid == imgDesc->uid
&& imgDesc->numPgsComplete == imgDesc->numPgs
&& imgDesc->numPgs )
rebootDelay = DELUGE_REBOOT_DELAY;
}
void setNextPage() {
DelugeImgDesc *imgDesc;
int i;
for ( i = 0; i < DELUGE_NUM_IMAGES; i++ ) {
imgDesc = call Metadata.getImgDesc(i);
if (imgDesc->numPgs != imgDesc->numPgsComplete) {
call PageTransfer.setWorkingPage(i, imgDesc->numPgsComplete);
advTimers[i].newAdvs = DELUGE_NUM_NEWDATA_ADVS_REQUIRED;
advTimers[i].overheard = 0;
resetTimer(i);
call Leds.redOff();
return;
}
}
call Leds.redOn();
call PageTransfer.setWorkingPage(DELUGE_INVALID_IMGNUM, DELUGE_INVALID_PGNUM);
}
command result_t StdControl.init() {
state = S_INITIALIZING;
#ifndef PLATFORM_PC
call IFlash.read((uint16_t*)IFLASH_NODE_DESC_ADDR, &nodeDesc, sizeof(nodeDesc));
#endif
call Leds.init();
call PageTransferControl.init();
//Wei
pr_init();
return SUCCESS;
}
void realStart() {
int i;
setNextPage();
call PageTransferControl.start();
for ( i = 1; i < DELUGE_NUM_TIMERS; i++ )
resetTimer(i);
}
command result_t StdControl.start() {
if ( state == S_STOPPED )
realStart();
state = S_STARTED;
resetTimer( 0 );
return SUCCESS;
}
command result_t StdControl.stop() {
state = S_STOPPED;
call Timer.stop();
call PageTransferControl.stop();
return SUCCESS;
}
event result_t MetadataControl.initDone() {
return SUCCESS;
}
event result_t MetadataControl.startDone() {
if ( state == S_STARTED )
realStart();
imagesLoaded = TRUE;
return SUCCESS;
}
event result_t MetadataControl.stopDone() {
return SUCCESS;
}
bool isNodeDescValid(DelugeNodeDesc* tmpNodeDesc) {
return ( tmpNodeDesc->crc == call Crc.crc16(tmpNodeDesc, 8)
|| tmpNodeDesc->vNum == DELUGE_INVALID_VNUM );
}
void sendAdvMsg(int imgNum, uint16_t addr) {
TOS_MsgPtr pMsgBuf = call SharedMsgBuf.getMsgBuf();
DelugeAdvMsg *pMsg = (DelugeAdvMsg*)pMsgBuf->data;
DelugeImgDesc *imgDesc = call Metadata.getImgDesc(imgNum);
if (!call SharedMsgBuf.isLocked()) {
pMsg->sourceAddr = TOS_LOCAL_ADDRESS;
pMsg->version = DELUGE_VERSION;
pMsg->type = (imagesLoaded) ? DELUGE_ADV_NORMAL : DELUGE_ADV_ERROR;
// make sure node desc is valid
if ( !isNodeDescValid( &nodeDesc ) )
memset( &nodeDesc, 0xff, sizeof( nodeDesc ) );
memcpy(&pMsg->nodeDesc, &nodeDesc, sizeof(DelugeNodeDesc));
// make sure img desc is valid
if ( !call Metadata.isImgDescValid( imgDesc ) ) {
imgDesc->vNum = DELUGE_INVALID_VNUM;
imgDesc->imgNum = imgNum;
}
memcpy(&pMsg->imgDesc, imgDesc, sizeof(DelugeImgDesc));
pMsg->numImages = DELUGE_NUM_IMAGES;
if (call SendAdvMsg.send(addr, sizeof(DelugeAdvMsg), pMsgBuf) == SUCCESS) {
dbg(DBG_USR1, "DELUGE: Sent ADV_MSG(imgNum=%d)\n", imgDesc->imgNum);
pr("AdvMsg: %d -> %d\n", TOS_LOCAL_ADDRESS, addr);
call Leds.greenToggle();
call SharedMsgBuf.lock();
}
}
}
event result_t Timer.fired() {
int minTimer = findMinTimer();
updateTimers(minTimer);
if (!advTimers[minTimer].overheard)
sendAdvMsg(minTimer, TOS_BCAST_ADDR);
if (call PageTransfer.isTransferring())
advTimers[minTimer].newAdvs = DELUGE_NUM_NEWDATA_ADVS_REQUIRED;
else if (advTimers[minTimer].newAdvs > 0)
advTimers[minTimer].newAdvs--;
if (rebootDelay > 0) {
//call Leds.yellowOn();
if (!(--rebootDelay)) {
// will not return on SUCCESS
call NetProg.programImgAndReboot(nodeDesc.imgNum);
}
}
else {
//call Leds.yellowOff();
if (advTimers[minTimer].newAdvs == 0
&& advTimers[minTimer].periodLog2 < DELUGE_MAX_ADV_PERIOD_LOG2) {
advTimers[minTimer].periodLog2++;
}
}
setupAdvTimer(minTimer);
return SUCCESS;
}
event TOS_MsgPtr ReceiveAdvMsg.receive(TOS_MsgPtr pMsg) {
DelugeAdvMsg *rxAdvMsg = (DelugeAdvMsg*)(pMsg->data);
imgnum_t imgNum = rxAdvMsg->imgDesc.imgNum;
DelugeImgDesc *cmpImgDesc = &(rxAdvMsg->imgDesc);
DelugeImgDesc *curImgDesc;
bool isEqual = FALSE;
//call Leds.yellowToggle();
if ( rxAdvMsg->version != DELUGE_VERSION
|| !isNodeDescValid(&rxAdvMsg->nodeDesc)
|| state != S_STARTED )
return pMsg;
curImgDesc = call Metadata.getImgDesc(imgNum);
if (rxAdvMsg->type != DELUGE_ADV_NORMAL) {
// adv message from PC
if ( rxAdvMsg->type == DELUGE_ADV_PING
|| (cmpImgDesc->vNum == curImgDesc->vNum
&& cmpImgDesc->numPgsComplete == curImgDesc->numPgsComplete))
{
sendAdvMsg(imgNum, rxAdvMsg->sourceAddr);
if ( rxAdvMsg->nodeDesc.vNum == nodeDesc.vNum )
return pMsg;
}
else if ( rxAdvMsg->type == DELUGE_ADV_RESET ) {
call Metadata.setupNewImage(&(rxAdvMsg->imgDesc));
return pMsg;
}
}
if ( rxAdvMsg->nodeDesc.vNum != nodeDesc.vNum
&& rxAdvMsg->nodeDesc.vNum != DELUGE_INVALID_VNUM
&& rxAdvMsg->nodeDesc.imgNum < DELUGE_NUM_IMAGES )
{
resetTimer( rxAdvMsg->nodeDesc.imgNum );
if ( ( rxAdvMsg->nodeDesc.vNum - nodeDesc.vNum) > 0 ) {
memcpy(&nodeDesc, &rxAdvMsg->nodeDesc, sizeof(DelugeNodeDesc));
#ifndef PLATFORM_PC
call IFlash.write((uint8_t*)IFLASH_NODE_DESC_ADDR, &nodeDesc, sizeof(nodeDesc));
#endif
if ( nodeDesc.imgNum == DELUGE_GOLDEN_IMAGE_NUM )
rebootDelay = DELUGE_REBOOT_DELAY;
else
checkReboot();
if (rxAdvMsg->type == DELUGE_ADV_PC)
sendAdvMsg(imgNum, rxAdvMsg->sourceAddr);
}
}
// don't do anything with the image descriptor if it is corrupt
// or if the images have not been mounted
if ( call Metadata.isImgDescValid(&(rxAdvMsg->imgDesc))
&& state == S_STARTED )
{
// don't listen to advertisements about the golden image
// unless it's from the PC and source address is TOS_UART_ADDR
if (imgNum != DELUGE_GOLDEN_IMAGE_NUM
|| (rxAdvMsg->type == DELUGE_ADV_PC && rxAdvMsg->sourceAddr == TOS_UART_ADDR))
{
if (cmpImgDesc->vNum != curImgDesc->vNum) {
// image is newer
if (curImgDesc->vNum == DELUGE_INVALID_VNUM
|| (cmpImgDesc->vNum != DELUGE_INVALID_VNUM
&& (cmpImgDesc->vNum - curImgDesc->vNum) > 0))
{
call Metadata.setupNewImage(&(rxAdvMsg->imgDesc));
call PageTransfer.setWorkingPage(DELUGE_INVALID_IMGNUM, DELUGE_INVALID_PGNUM);
}
}
// image is larger
else if (cmpImgDesc->numPgsComplete > curImgDesc->numPgsComplete) {
if ( advTimers[imgNum].newAdvs == 0 )
call PageTransfer.dataAvailable(rxAdvMsg->sourceAddr, imgNum);
}
// image is smaller
else if (cmpImgDesc->numPgsComplete < curImgDesc->numPgsComplete) {
advTimers[imgNum].newAdvs = DELUGE_NUM_NEWDATA_ADVS_REQUIRED;
}
// image is the same
else {
advTimers[imgNum].overheard = 1;
isEqual = TRUE;
}
if ( !isEqual )
resetTimer(imgNum);
}
}
return pMsg;
}
event result_t SendAdvMsg.sendDone(TOS_MsgPtr pMsg, result_t result) {
#ifndef PLATFORM_PC
call Bcast.inc(DELUGE_TX_ADV);
#endif
call SharedMsgBuf.unlock();
return SUCCESS;
}
event void PageTransfer.receivedPage(imgnum_t imgNum, pgnum_t pgNum) {
#ifdef PLATFORM_PC
char strTime[20];
printTime(strTime, sizeof strTime);
pr("DELUGE: RECV_DONE %d at %s\n", pgNum, strTime);
#endif
curImage = imgNum;
call Metadata.receivedPage(imgNum, pgNum);
}
event void PageTransfer.suppressMsgs(imgnum_t imgNum) {
advTimers[imgNum].overheard = 1;
}
event void Metadata.updateDone(result_t result) {
if ( curImage == nodeDesc.imgNum )
checkReboot();
setNextPage();
}
event void SharedMsgBuf.bufFree() {}
}