Cac/arduino/termostato/termostato.ino

//board atmega1280
#include <glcd.h>
#include <fonts/allFonts.h>
#include <IRremote.h>
#include <SoftwareSerial.h>// per bluetooth
int RECV_PIN = 11; //define input pin on Arduino
IRrecv irrecv(RECV_PIN);
decode_results results;
String val = "";
double Temperature;

//parte bluetooth
SoftwareSerial mySerial(52, 53); // RX, TX
String command = ""; // Stores response of the HC-06 Bluetooth device
char blueToothVal;           //value sent over via bluetooth
char lastValue;              //stores last state of device (on/off)
int countTemp = 0;
double tempTemp = 0;
double tempTempTot = 0;


double Thermister(int RawADC) {  //Function to perform the fancy math of the Steinhart-Hart equation
  double Temp;
  //Temp = log(10000.0*((1024.0/RawADC-1)));
  //Serial.println(RawADC);
  float R = 9870.0; // Fixed resistance in the voltage divider
  float Rt,T,logRt; // Computed resistance of the thermistor
  Rt = R*( 1023.0 / float(RawADC) - 1.0 );
  float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;

  logRt = log(Rt);
  T = ( 1.0 / (c1 + c2*logRt + c3*logRt*logRt*logRt ) ) - 273.15; 
  //Serial.println(T);

  // See http://en.wikipedia.org/wiki/Thermistor for explanation of formula
  Temp = log(((10240000/RawADC) - 10000));
  Temp = 1 / (0.001129148 + (0.000234125 * Temp) + (0.0000000876741 * Temp * Temp * Temp));
  Temp = Temp - 273.15;           // Convert Kelvin to Celcius
  return Temp;
}

char* NormalizedTemp(double Temperature) { 
  char charBuf[50];
  //ciaoa.toCharArray(charBuf, 50);
  int intpart = (int)Temperature;
  double decpart = (Temperature - intpart)*100;
  int intdecpart = (int)decpart;
  sprintf(charBuf, "t%d%d", intpart,intdecpart);
  return charBuf;
}
void setup() {
  Serial.begin(9600);
  irrecv.enableIRIn(); // Start the receiver  
  
  // Initialize the GLCD
  GLCD.Init();

 // Select the font for the default text area
  GLCD.SelectFont(System5x7);

  GLCD.print("Formaggino dice:");
  
  //parte bluetooth
  Serial.println("Type AT commands!");
  
  // The HC-06 defaults to 9600 according to the datasheet.
  mySerial.begin(9600);
  pinMode(13,OUTPUT);
  
  Temperature = Thermister(analogRead(0));
  Serial.println(Temperature);
}

void loop() {

  
  countTemp += 1;
  Serial.println(countTemp);
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  GLCD.CursorTo(0, 1);
  GLCD.print("Attivo da: ");
  // print the number of seconds since reset:
  GLCD.print(millis()/1000);
  GLCD.print(" sec");
  GLCD.print("\nTemperatura: ");
  tempTemp = Thermister(analogRead(0));
  tempTempTot += tempTemp;
  Serial.println(tempTemp);
  if ((countTemp % 10) == false){
    Serial.println("Dentro");
    Serial.println(tempTempTot);
     Temperature = tempTempTot / 10;
     tempTempTot = 0;
  }
     
  GLCD.print(Temperature);
 
  //Delay 50ms before next reading.
  delay(50);
  if (val == "ff30cf")
  {
    GLCD.println("valore preso");
  }
  else{
    GLCD.println("no");
  }
  
  if (irrecv.decode(&results)) {
  Serial.println(results.value, HEX);
  if (String(results.value, HEX) != "ffffffff")
    val = String(results.value, HEX);
  Serial.println(val);
  irrecv.resume(); // Receive the next value  
  }
  
  
        // Read user input if available.
  if (mySerial.available()){
    //delay(10); // The delay is necessary to get this working!
    //mySerial.write(Serial.read());
     blueToothVal=(char)mySerial.read(); //read it
     Serial.println("sono dentro");
  }
  if (blueToothVal=='n')
  {//if value from bluetooth serial is n
    digitalWrite(13,HIGH);            //switch on LED

    mySerial.write(NormalizedTemp(Temperature));
    blueToothVal=' ';
  }
  else if (blueToothVal=='f')
  {//if value from bluetooth serial is n
    digitalWrite(13,LOW);             //turn off LED

    mySerial.write(NormalizedTemp(Temperature));
    blueToothVal=' ';
  }
  delay(1000);
  


}