//DS18B20 ESP32 Temperature Function

//Definitions and Pins
const int ONE_WIRE_BUS = 14;      

//Libraries and Objects
#include <OneWire.h>          
#include <DallasTemperature.h>  

DeviceAddress bottomSensorAddress = {0x28,0xC4,0xA0,0x51,0x38,0x19,0x01,0xC2};  //1  
DeviceAddress surfaceSensorAddress = {0x28,0x0B,0xDB,0x60,0x38,0x19,0x01,0xA3};	//2
OneWire oneWire(ONE_WIRE_BUS);          
DallasTemperature DS18B20(&oneWire);  			        //3

//Variables
float bottomTem = 0.00;         			        //4
String bottomTemperature = ""; 			                //5

float surfaceTem = 0.00;
String surfaceTemperature = "";

const uint8_t AveragingNumberDS18B20 = 5;		        //6

const uint8_t RESOLUTION = 12;      				//7
const uint8_t TCONV = 750;          				//8
uint8_t delayTime = (TCONV/pow(2, (12-RESOLUTION))) + 10;	//9

void setup() {
  Serial.begin(115200);
  Serial.println("Measurement is starting ...");
}

void loop() {
  measureDS18B20Tem(AveragingNumberDS18B20);			//10
  Serial.println("Sensor 1 (Bottom) Measurement: " + bottomTemperature + " °C");//11
  Serial.println("Sensor 2 (Surface) Measurement: " + surfaceTemperature + " °C");
  Serial.println("==============================================");

  delay(2000);							//12
}

//DS18B20 Measurement function
void measureDS18B20Tem (const uint8_t AveragingNumber){	        //13
  DS18B20.begin();						//14
  bottomTem = 0;						//15
  surfaceTem = 0;
  bottomTemperature = "";
  surfaceTemperature = "";

  for(byte i = 0; i < AveragingNumber; i++)			//16
  {
    DS18B20.requestTemperatures();				//17
    delay(delayTime);						//18
    bottomTem += DS18B20.getTempC(bottomSensorAddress);	        //19
    surfaceTem += DS18B20.getTempC(surfaceSensorAddress);
  }
  bottomTem /= AveragingNumber;				        //20
  surfaceTem /= AveragingNumber;

  if(bottomTem<10)						//21
    bottomTemperature = "0";
  bottomTemperature += bottomTem;				//22

  if(surfaceTem<10)
    surfaceTemperature = "0";
  surfaceTemperature += surfaceTem;
}