peace of file from aqua_control project

string_problem

#include "Arduino.h"
#include "DallasTemperature.h"
#include "EtherCard.h"
#include "OneWire.h"
#include "Wire.h"
#include "DS1307new.h"

extern HardwareSerial Serial;

#define thermometerPin 4       //DS18B20 wired to Digital pin 2

OneWire oneWire(thermometerPin);
DallasTemperature sensors(&oneWire);

float tempext = 0;
unsigned int year = 0000;
unsigned short int month = 00;
unsigned short int day = 00;
unsigned short int hour = 00;
unsigned short int minute = 00;
unsigned short int second = 00;

float temp;
char* tempChar;
char* tst;

uint16_t startAddr = 0x0000;            // Start address to store in the NV-RAM
uint16_t lastAddr;                      // new address for storing in NV-RAM
uint16_t TimeIsSet = 0xaa55;

static byte mymac[] = {0x54, 0x55, 0x58, 0x10, 0x00, 0x24};
static byte myip[] = {192,168,1,15};
byte Ethernet::buffer[1200];
BufferFiller bfill;
byte bait_address[4];

//Define Pins
const int fans = 6;
const int buttonPin = 7;
const int lights = 8;


//Define Status variables
int fanStatusCode = 0;
bool fansStatus = false;
bool buttonStatus = false;
bool fanWebStatus = false;

bool lightsStatus = false;
bool lightsWebStatus = false;

const String statusLigadasWeb = "Ligadas pela web";
const String statusLigadasManual = "Ligadas manualmente";
const String statusLigadasAutomatico = "Ligadas automaticamente";
const String statusDesligadas = "Desligadas";



void setup(){
  pinMode(9, INPUT);                    // Test of the SQW pin, D2 = INPUT
  digitalWrite(9, HIGH);
  RTC.setRAM(0, (uint8_t *)&startAddr, sizeof(uint16_t));
  RTC.getRAM(54, (uint8_t *)&TimeIsSet, sizeof(uint16_t));
  RTC.ctrl = 0x00;
  RTC.setCTRL();

  if (ether.begin(sizeof Ethernet::buffer, mymac) == 0)
      Serial.println( "Failed to access Ethernet controller");
      ether.staticSetup(myip);

  Serial.begin(9600);
  sensors.begin();      // Start the OneWire sensors , in this case only one DS18B20
  Serial.println("DS1307 + DS18B20 test");
  Serial.println();
  Serial.println("Date (dd/mm/yyyy), time (hh:mm:ss) and temperature (degC)");
}

//Method to get the actual temperature in celcius
void getTemp()
{

	sensors.requestTemperatures();    //request for read values of all the sensors in the wire. in this case only one Ds18B20
	temp=sensors.getTempCByIndex(0);

	char buf[50];
	tempChar = dtostrf(temp,3,2,buf);
}

//Method to control fans
void controlFans(){

	int highLimit = 30;

	if ((buttonStatus == true && fansStatus == false) || (temp >= highLimit && fansStatus == false) || (fanWebStatus == true && fansStatus == false)){
		fansStatus = true;
		digitalWrite(fans, HIGH);
		Serial.println("Ligou");
	}
	else if(temp < highLimit && fansStatus == true && buttonStatus == false && fanWebStatus == false){
		fansStatus = false;
		digitalWrite(fans, LOW);
		Serial.println("Desligou");
	}
}

//Method to control lights
void controlLights(){


	if (lightsWebStatus == true && lightsStatus == false){
		lightsStatus = true;
		digitalWrite(lights, HIGH);
	}
	else if(lightsStatus == true && lightsWebStatus == false){
		lightsStatus = false;
		digitalWrite(lights, LOW);
	}
}

//Method to get lights status
const String getLightsStatus(){
	if(lightsWebStatus){
		return statusLigadasWeb;
	}
	else if (lightsStatus){
		return statusLigadasAutomatico;
	}
	else{
		return statusDesligadas;
	}
}

//Method to get fans status
const String getFansStatus(){
	if (buttonStatus){
		return statusLigadasManual;
	}
	else if(fanWebStatus){
		return statusLigadasWeb;
	}
	else if (fansStatus){
		return statusLigadasAutomatico;
	}
	else{
		return statusDesligadas;
	}
}

//Method to control button
void controlButton(){
	if(buttonStatus){
		buttonStatus = false;
	}
	else{
		buttonStatus = true;
	}
}

void controlFansWeb(bool a){
	if(a){
		fanWebStatus = true;
	}
	else{
		fanWebStatus = false;
	}
}

void controlLightsWeb(bool a){
	if(a){
		lightsWebStatus = true;
	}
	else{
		lightsWebStatus = false;
	}
}

static word PageGetTemp() {

	bfill = ether.tcpOffset();
	bfill.emit_p(PSTR(
		"$S"),tempChar);
	return bfill.position();

}

void loop(){
  // read the date from DS1307 TRC
  RTC.getTime();
  day=RTC.day;
  month=RTC.month;
  year=RTC.year;
  // read the date from DS1307 TRC
  hour=RTC.hour;
  minute=RTC.minute;
  second=RTC.second;

  //read the temperature from DS18B20
  sensors.requestTemperatures();    //request for read values of all the sensors in the wire. in this case only one Ds18B20
  tempext=sensors.getTempCByIndex(0); //read the temperature from the fisrt sensor in the wire, Sensor 0 or master

  // Print the results
  Serial.print(day);
  Serial.print("/");
  Serial.print(month);
  Serial.print("/");
  Serial.print(year);
  Serial.print("       ");
  Serial.print(hour);
  Serial.print(":");
  Serial.print(minute);
  Serial.print(":");
  Serial.print(second);
  Serial.print("       ");
  Serial.println(tempext);
  
        word len = ether.packetReceive();
	word pos = ether.packetLoop(len);

	if (pos){  // check if valid tcp data is received

			ether.httpServerReply(PageGetTemp()); // send web page data

	}
}