// Incluez les bibliothèques Arduino requises :
#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal_I2C.h>

// Data wire is connteced to the Arduino digital pin 2
#define ONE_WIRE_BUS 2
// Setup a oneWire instance to communicate with any OneWire devices:
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature sensor:
DallasTemperature sensors(&oneWire);

LiquidCrystal_I2C lcd(0x27, 20, 4);
int deviceCount = 0, i=0, N, L = 0, k;
float tempC ;
float tempF ;

void setup() {

  pinMode(2, INPUT);
  pinMode(3, INPUT);

  // Turn ON LCD
  lcd.begin(20,4);
  lcd.backlight();
  lcd.clear();
  // Start serial communication for debugging purposes
  Serial.begin(9600);
  lcd.setCursor(0,0);
  lcd.print("   Salam Alaikum ");
  lcd.setCursor(0,2);
  lcd.print("Sensing Temperature");
  // Start up the library
  sensors.begin();

  // localazing sensors in the bus
  //Serial.println("Localisation des périphériques...");
  //Serial.print("Trouvé ");
  deviceCount = sensors.getDeviceCount();
  //Serial.print(deviceCount);
  //Serial.println(" devices");

  N = 5;
  if (N = 5) {
    label1:
    int a = digitalRead(3);
    if (a == 1) { 
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("Number of Sensors:");
      lcd.setCursor(0,1);
      lcd.print(deviceCount);
      lcd.print(" sensors");
      N = 0;
      delay (2000);
   }
   else { goto label1; }
  }

}

void loop(void) {
  // Call sensors.requestTemperatures() to issue a global temperature and Requests to all devices on the bus
   sensors.requestTemperatures();

  label2:
  int a = digitalRead(3);
  if (a == 1 && N == 0) { 
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Group A:");
    k = 0; L = 3; 
    for (int i = k; i < L; i++) {
    Serial.print("Sensor ");
    Serial.print(i + 1);
    Serial.print(" : ");
    // Get temp for each sensor
    tempC = sensors.getTempCByIndex(i);
    tempF = sensors.getTempFByIndex(i);
    // Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
    //Serial.print(sensors.getTempCByIndex(0)); 
    Serial.print(tempC); Serial.print(" \xC2\xB0"); Serial.print("C | "); // display ° symbol
    Serial.print(tempF); Serial.print(" \xC2\xB0"); Serial.println("F");
    lcd.setCursor(0,i+1);
    lcd.print("T"); lcd.print(i+1);lcd.print(" = ");
    lcd.print(tempC); lcd.print(" \xC2\xB0"); lcd.print("C | ");
    //lcd.print(tempF); lcd.print(" \xC2\xB0"); lcd.print("F");
    if (N <= 2) { N = N+1; }
    else { N = 0; }
    }
    delay (2000);
  }
  else if (a == 1 && N == 1) {
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Group B:");
    k = 3; L = 6;
    for (int i = k; i < L; i++) {
    Serial.print("Sensor ");
    Serial.print(i + 1);
    Serial.print(" : ");
    // Get temp for each sensor
    tempC = sensors.getTempCByIndex(i);
    tempF = sensors.getTempFByIndex(i);
    // Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
    //Serial.print(sensors.getTempCByIndex(0)); 
    Serial.print(tempC); Serial.print(" \xC2\xB0"); Serial.print("C | "); // display ° symbol
    Serial.print(tempF); Serial.print(" \xC2\xB0"); Serial.println("F");
    lcd.setCursor(0,i+1);
    lcd.print("T"); lcd.print(i+1);lcd.print(" = ");
    lcd.print(tempC); lcd.print(" \xC2\xB0"); lcd.print("C | ");
    //lcd.print(tempF); lcd.print(" \xC2\xB0"); lcd.print("F");
    if (N <= 2) { N = N+1; }
    else { N = 0; }
    }
    delay (2000);
  }
  else if (a == 1 && N == 2) {
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Group C:"); 
    k = 6; L = 9;
    for (int i = k; i < L; i++) {
    Serial.print("Sensor ");
    Serial.print(i + 1);
    Serial.print(" : ");
    // Get temp for each sensor
    tempC = sensors.getTempCByIndex(i);
    tempF = sensors.getTempFByIndex(i);
    // Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
    //Serial.print(sensors.getTempCByIndex(0)); 
    Serial.print(tempC); Serial.print(" \xC2\xB0"); Serial.print("C | "); // display ° symbol
    Serial.print(tempF); Serial.print(" \xC2\xB0"); Serial.println("F");
    lcd.setCursor(0,i+1);
    lcd.print("T"); lcd.print(i+1);lcd.print(" = ");
    lcd.print(tempC); lcd.print(" \xC2\xB0"); lcd.print("C | ");
    //lcd.print(tempF); lcd.print(" \xC2\xB0"); lcd.print("F");
    if (N <= 2) { N = N+1; }
    else { N = 0; } 
    }
    delay (2000);
  }
  else { goto label2; }
  
  Serial.println();
  delay(1000);
}