// This function reads the value of Humidity and Temperature integral and decimal values
// The data is sent serially with a 50us low signal from the sensor indicating that the
// next bit is data, and depending on the width of the high signal, we get a '0' or '1'
unsigned short Read()
{
uint8_t bit_cnt;
uint8_t hum_int=0;
for (bit_cnt=0;bit_cnt<8;bit_cnt++)
{
while(DHT==0); //50us of low signal for every data bit
if (DHT==1)
{
waitMicrosecond(29); //29us of high means'0' else '1'
hum_int |= (0x01*DHT);
if (bit_cnt!=7)
{
hum_int <<=1;
}
}
while(DHT==1);
}
return (hum_int);
}
int main(void)
{
// uint8_t* udpData;
uint8_t* tcpData;
uint8_t p=0;
uint16_t i=0;
Seq_number=0xfb0983f7;
Ack_number=0x00000;
myport=0xb921;
id=0x1229;
uint8_t* http;
// init controller
initHw();
putsUart0("\r\nWeather forecast\r\n");
// init ethernet interface
etherInit(ETHER_UNICAST | ETHER_BROADCAST | ETHER_HALFDUPLEX);
etherSetIpAddress(192,168,137,199);
// flash phy leds
etherWritePhy(PHLCON, 0x0880);
RED_LED = 1;
waitMicrosecond(500000);
etherWritePhy(PHLCON, 0x0990);
RED_LED = 0;
waitMicrosecond(500000);
sendSynWeather(data);
// message loop
while (1)
{
if (etherKbhit())
{
if (etherIsOverflow())
{
RED_LED = 1;
waitMicrosecond(100000);
RED_LED = 0;
}
// get packet
etherGetPacket(data, 1500);
// handle arp request
if (etherIsArp(data))
{
etherSendArpResp(data);
RED_LED = 1;
// GREEN_LED = 1;
waitMicrosecond(50000);
RED_LED = 0;
GREEN_LED = 0;
}
// handle ip datagram
if (etherIsIp(data))
{
if (etherIsIpUnicast(data))
{
// handle icmp ping request
if (etherIsPingReq(data))
{
etherSendPingResp(data);
GREEN_LED = 1;
waitMicrosecond(50000);
GREEN_LED = 0;
}
if(etherIsTcp(data))
{
tcpData = etherGetTcpData(data);
if(etherisHandshake1(data))
{
etherRespondtoHandshake1(data);
RED_LED = 1;
//GREEN_LED=1;
BLUE_LED=1;
waitMicrosecond(100000);
RED_LED = 0;
//GREEN_LED=0;
BLUE_LED=0;
break;
}
}
}
}
}
}
sendGETRequest(data);
while(1)
{
if (etherKbhit())
{
etherGetPacket(data, 1500);
if(etherIsTcp(data))
{
RED_LED = 1;
//GREEN_LED=1;
BLUE_LED=1;
waitMicrosecond(100000);
RED_LED = 0;
//GREEN_LED=0;
BLUE_LED=0;
if(p<=7)
{
if(tcp_DataCount>0)
etherRespondToData(data);
}
//if(p>=2)
{
//p=0;
tcpData = etherGetTcpData(data);
http=tcpData+9;
if((*http==0x32))//|(*http==0x35))
{
tcpData=tcpData+299;
for(i=0;i<(tcp_DataCount-299);i++)
{
putcUart0(*tcpData);
tcpData++;
}
if(*http==0x32)
break;
}
//break;
//sendFinRequest(data);
}
p++;
}
}
}
while(1);
return 0;
}
