Programme

#include <Ports.h>
#include "PortsSHT21.h"
#include <Wire.h>
#include <LibHumidity.h>
//3 sensors
SHT21 hsensor1 (1);
SHT21 hsensor2 (2);
SHT21 hsensor3 (3);
float h, t;
LibHumidity humidity = LibHumidity(0);

void setup()
{
  Serial.begin(9600);
  Serial.println("Power On");
  pinMode(16, OUTPUT);
  digitalWrite(16, LOW);  //GND pin
  pinMode(17, OUTPUT);
  digitalWrite(17, HIGH); //VCC pin
  pinMode(13, OUTPUT);
}

void loop()
{

   // Get data from first sensor
  hsensor1.measure(SHT21::HUMI);
  hsensor1.measure(SHT21::TEMP);
  hsensor1.calculate(h, t);
  float hum1 = (h);
  float temp1 = (t);
  Serial.println(temp1);


  // Get data from second sensor
  hsensor2.measure(SHT21::HUMI);
  hsensor2.measure(SHT21::TEMP);
  hsensor2.calculate(h, t);
    float hum2 = (h);
    float temp2 = (t);
  Serial.println(temp2);

   // Get data from third sensor
  hsensor3.measure(SHT21::HUMI);
  hsensor3.measure(SHT21::TEMP);
  hsensor3.calculate(h, t);
    float hum3 = (h);
    float temp3 = (t);
  Serial.println(temp3);

  // Get data from fourth sensor
    float hum4 = (humidity.GetHumidity());
    float temp4 = (humidity.GetTemperatureC());
  Serial.println(temp4);
}