/*******************************************************************************
* main subroutine
*
* This routine will run continuously after program initialization
*
* Within each iteration it will collect 1 temperature reading, 1 humidity
* reading, save the latest data, and check if it should transmit the last
* chunk of data from EEPROM
*
* Inputs: None
* Outputs: None
******************************************************************************/
void main(void) {
Initial();
while (1) {
if ( USARTFlag ) { //Checks if there was a new byte from USART
CheckUSART();
}
if ( OKGOFlag ) { //Check if "ok to send" has been received
if ( SENDFlag ) { //Check if latest data block is ready
SendDATA(TTRAN); //Send temperature data
FIRST = 0; //Clear flag for first time transmission
SENDFlag = 0; //Clear flag for latest chunk of data
}
}
if ( TimeStamp > 900 ) {
WakeXBEE(); //Wake up XBEE if more than 15 minutes has
} // passed
if ( TimeStamp > 3600 ) { //One hour has passed
T0CONbits.TMR0ON = 0; //Turn off TMR0
SendBYTE(0xFF); //Send Ack command to tell GSMRS we are done
while( 1 ) {
TxERROR(TTRAN);
}
}
while ( SECFlag == 0 ) {} //Waits until 1 second has passed
ADCON0bits.GO = 1; //Start collecting temperature data
while ( ADCON0bits.GO ) {} //Wait for collection to finish
ADConverter();
SECFlag = 0; //Reset 1 second counter
Store(); //Store latest readings in RAM or EEPROM
}
}
//=======================================================
// FUNCTION: MacUpPortRecv
// PURPOSE: Receive the frame from the LLC layer
//=======================================================
void S80211DcfMacUpPortRecv (MobileNode *node, WGN_802_11_Mac_Frame *frame) {
unsigned int DIFS;
DIFS = SecToNsec(GetDIFS());
//********************************FOR TEST ONLY***********************************//
//PrintLine();
//printf("NODE %d: MAC LAYER RECEIVE A PACKET FROM LLC LAYER.\n",node->Id);
//PrintLine();
node->nodeMac->HasPkt = TRUE;
//Encapsulate the frame into 802.11 format. (actually pesudo 802.11 frame format)
//and put it into the pktTx buffer to be sent when the channel is available
SendDATA(node, frame);
SendRTS(node);
if (CheckIfIsBroadCastPkt(node->nodeMac->pktTx) == TRUE ) {
node->nodeStats->BroadcastTx += 1;
}
else
node->nodeStats->UnicastTx += 1;
if ( Timer_SwitchSign(node, BF_TIMER)==OFF ) {
if ( CheckIfChannelIdle(node) == TRUE ) {
if ( Timer_SwitchSign(node, DF_TIMER)==OFF )
DFTimer_Start(node, DIFS);
}
//If the medium is NOT IDLE, then backoff timer may be started.
else {
BFTimer_Start(node, FALSE);
}
}
}