int main(void)
{
unsigned char tempSec;
get_mcusr(); // Disable the watchdog timer
uartInit(); // Init both UARTs
uartSetBaudRate(0,BAUD);
uartSetBaudRate(1,BAUD);
stdout = stdin = &uart1_str; // Init the stdout and stdin (printf, scanf...) functions
stderr = &uart0_str; // Init the stderror functions
i2cInit();
i2cSetBitrate(100);
ds1307_enable(DS1307_I2C_ADDR); // Enable the DS1307 RTC
// Make a flash on LEDs connected to PORTB when starting / restarting
DDRB=0xff; // PORTB output
PORTB=0xff; // All bits on port B = 1
_delay_ms(1000); // Wait until XBee modem has started
PORTB=0x00; // All bits on port B = 0
// Empty the receive buffer of both UARTs
uartFlushReceiveBuffer(EthUART);
uartFlushReceiveBuffer(XBeeUART);
wdt_enable(WDTO_2S); // Enable watchdog, reset after 2 seconds
wdt_reset();
while(1)
{
wdt_reset(); // Reset the watchdog timer
tempSec=time.sec;
if(ds1307_gettime(DS1307_I2C_ADDR, &time))
{ //if(tempSec!=time.sec)
if((time.sec%2==0)&&(tempSec!=time.sec)) // True every 2nd second
{
while(!uartReceiveBufferIsEmpty(XBeeUART))
{
int i;
i=0;
signed char XBeePacket[12];
// Read data from slave module
while (i<13)
{
while (uartReceiveBufferIsEmpty(XBeeUART))
;;
// Syncronization
uartReceiveByte(XBeeUART, &XBeePacket[i]);
if (XBeePacket[i]=='~') // Counter is set to 0 if the current character is '~'
i=0;
if (XBeePacket[0]=='~') //Increment if the first character in received data is '~'
i++;
}
sm[XBeePacket[7]-'0'].temp=XBeePacket[12]-7; // Compensate for heat from components in slave module
// Check status of slave module and make status ready to send to webserver
if (XBeePacket[10]=='f')
sm[XBeePacket[7]-'0'].status=0;
else if (XBeePacket[10]=='n')
sm[XBeePacket[7]-'0'].status=1;
XBeePacketCounter[XBeePacket[7]-'0']=1; // Set packet counter for this slave module to 1
}
// Check packet counter of all modules, if false: status=2 is sent to the webserver
// Webserver will then now which modules that are unconnected
for (int i=0; i<noOfModules; i++)
{
if (!XBeePacketCounter[i])
sm[i].status=2;
XBeePacketCounter[i]=0;
}
// Receive data from webserver
if (checkForEthPacket(ethPacket))
{
if (ethPacket[pHour]<24)// edit time
{
time.yr=ethPacket[pYear];
time.mon=ethPacket[pMonth];
time.dat=ethPacket[pDate];
time.hr=ethPacket[pHour];
time.min=ethPacket[pMin];
ds1307_settime(DS1307_I2C_ADDR,time);
}
int number=0;
while (number<noOfModules)
{
sm_web[number].type=ethPacket[pType+number*pFieldsModules];
sm_web[number].status=ethPacket[pStatus+number*pFieldsModules];
sm_web[number].temp=ethPacket[pTemp+number*pFieldsModules];
switch (sm_web[number].type)
{
case 0:
if (sm_web[number].status==0) // Check if the current slave module is disabled on the website
sendSlaveModule(number,0); // Send data to slave module: turn off relay
else
{
if ((sm[number].temp)<(sm_web[number].temp-1)) // Measured temperature < wanted temperature - 1 ?
sendSlaveModule(number,1); // Send data to slave module: turn on relay
else if ((sm[number].temp)>(sm_web[number].temp+1)) // Measured temperature > wanted temperature + 1 ?
sendSlaveModule(number,0); // Send data to slave module: turn off relay
else
sendSlaveModule(number,2); // Send data to slave module
}
break;
}
number++; // next slave module
}
}
sendEthPacket(time, sm); // send packet with data to webserver
}
}
}
return 0;
}
// begin production parsers
static void parse_set_time(void) {
checked(time_t t = parse_time());
ds1307_settime(time_get_h(t), time_get_m(t), time_get_s(t));
}
