/* Read multiple DS18B20 1-Wire digital temperature sensors by address.
            PP le 1 mai 2026 */

// Include the required Arduino libraries:
#include "OneWire.h"
#include "DallasTemperature.h"
#include <LiquidCrystal_I2C.h>

const byte I2C_ADDR = 0x27;
const byte LCD_COLUMNS = 20;
const byte LCD_LINES = 4;

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

// Define to which pin of the Arduino the 1-Wire bus is connected:
#define ONE_WIRE_BUS 2        // 1 wire sur broche 2

// Create a new instance of the oneWire class to communicate with any OneWire device:
OneWire oneWire(ONE_WIRE_BUS);

// Pass the oneWire reference to DallasTemperature library:
DallasTemperature sensors(&oneWire);

// Addresses of DS18B20 sensors connected to the 1-Wire bus
// MMMMMMMMMMMMMMMM adresse réelle Matériel approvisionné MMMMMMMMMMMMMMM
//byte sensor1[8] = {0x28, 0xBB, 0x22, 0xBB, 0x00, 0x00, 0x00, 0x9F};
//byte sensor2[8] = {0x28, 0xDB, 0x5E, 0xBF, 0x00, 0x00, 0x00, 0x1E};
// TTTTTTTTTTTTTTTT  adresse pour simulateur avec json TTTTTTTTTTTTTTTTTT
byte sensor1[8] = {0x28, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x7E};
byte sensor2[8] = {0x28, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0xDE};

float Temperature ;       // tampon valeur Température de chaque sonde

/* Pour faire des mesures à intervalle régulier */
unsigned long tempsCourant = 0;
unsigned long tempsPrecedent = 0;
float intervalle = 5000;               // durée entre deux mesures en ms (à modifier si nécessaire)

void setup() {
  // Begin serial communication at a baud rate of 9600:
  Serial.begin(9600);

  lcd.init();
  lcd.backlight();

  // Start up the library:
  sensors.begin();
  // Set the resolution for all devices to 9 bits (résolution 0,5°C)
  sensors.setResolution(9);
  /*
    9 bits   0.5 °C     93.75 ms
    10 bits  0.25 °C    187.5 ms
    11 bits  0.125 °C   375 ms
    12 bits  0.0625 °C  750 ms */
}

void loop() {

  tempsCourant = millis();                              //maj temps courant

  if (tempsCourant - tempsPrecedent >= intervalle - 100) {        //100 ms avant cycle mesure
    // Send the command for all devices on the bus to perform a temperature conversion:
    sensors.requestTemperatures();                                // demande de conversion
  }

  if (tempsCourant - tempsPrecedent >= intervalle) {              // debut cycle mesure
    tempsPrecedent = tempsCourant;                               // maj temps precedent

    lcd.clear();                         // efface tout le lcd
    lcd.setCursor(4, 0);                // colonne, ligne
    lcd.print("Temperatures:");

    // XXXXXXXXXXXXXXX  Sonde 1 XXXXXXXXXXXXXXXXXX
    Temperature = sensors.getTempC(sensor1);

    lcd.setCursor(0, 1);                    // colonne, ligne
    lcd.print("Sonde 1: ");
    lcd.print(Temperature, 1);                // 1 chiffre apres la virgule
    lcd.print((char)223);                     // symbole °
    lcd.print("C");

    Serial.print("Sonde 1: ");
    Serial.print(Temperature, 1);
    Serial.print(" \xC2\xB0");                // shows degree symbol
    Serial.print("C  |  ");

    // XXXXXXXXXXXXXXX  Sonde 2 XXXXXXXXXXXXXXXXXX
    Temperature = sensors.getTempC(sensor2);

    lcd.setCursor(0, 2);                      // colonne, ligne
    lcd.print("Sonde 2: ");
    lcd.print(Temperature, 1);                // 1 chiffre apres la virgule
    lcd.print((char)223);                     // symbole °
    lcd.print("C");

    Serial.print("Sonde 2: ");
    Serial.print(Temperature, 1);
    Serial.print(" \xC2\xB0");                // shows degree symbol
    Serial.print("C  |  ");
    Serial.println();                          // prints an empty line
  }

}