#include <OneWire.h>
#include <DallasTemperature.h>

// Data wire is plugged TO GPIO 4
#define ONE_WIRE_BUS 12

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature. 
DallasTemperature sensors(&oneWire);

// Number of temperature devices found
int numberOfDevices;

// We'll use this variable to store a found device address
DeviceAddress tempDeviceAddress; 
DeviceAddress sensor1 = { 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFB };
DeviceAddress sensor2 = { 0x28, 0xFF, 0xB4, 0x6, 0x33, 0x17, 0x3, 0x4B };

const int POMPA = 38;
bool PompaState = false;


void setup(){
  // start serial port
  Serial.begin(115200);

  pinMode(POMPA, OUTPUT);
  
  // Start up the library
  sensors.begin();
  
  // Grab a count of devices on the wire
  numberOfDevices = sensors.getDeviceCount();
  
  // locate devices on the bus
  Serial.print("Locating devices...");
  Serial.print("Found ");
  Serial.print(numberOfDevices, DEC);
  Serial.println(" devices.");

  // Loop through each device, print out address
  for(int i=0;i<numberOfDevices; i++){
    // Search the wire for address
    if(sensors.getAddress(tempDeviceAddress, i)){
      Serial.print("Found device ");
      Serial.print(i, DEC);
      Serial.print(" with address: ");
      printAddress(tempDeviceAddress);
      Serial.println();
    } else {
      Serial.print("Found ghost device at ");
      Serial.print(i, DEC);
      Serial.print(" but could not detect address. Check power and cabling");
    }
  }
}

void loop(){ 
  sensors.requestTemperatures(); // Send the command to get temperatures
  
  // Loop through each device, print out temperature data
      float Termo = sensors.getTempC(sensor1);
      float Acqua = sensors.getTempC(sensor2);
      Acqua = 40.00;
      float Diff = Termo - Acqua;

      if (Diff>1.0 & !PompaState){
        PompaState = true;
        Serial.println("Pompa ON");
      } 
      if (Diff<0.0 & PompaState){
        PompaState = false;
        Serial.println("Pompa OFF");
      }

      Serial.print(" Termovettore : ");
      Serial.print(Termo);
      Serial.print(" - Acqua: ");
      Serial.print(Acqua);
      Serial.print(" - Pompa: ");
      Serial.println(PompaState);

      digitalWrite(POMPA, PompaState);

  delay(1000);
}

// function to print a device address
void printAddress(DeviceAddress deviceAddress) {
  for (uint8_t i = 0; i < 8; i++){
    if (deviceAddress[i] < 16) Serial.print("0");
      Serial.print(deviceAddress[i], HEX);
  }
}