/**
 * Temperature and humidity
 *
 * This example demonstrates the use of the Si7021 temperature and
 * humidity sensor. It measures the temperature and the humidity,
 * and prints them on the serial console every second.
 * Before use, the sensor must be powered using pin 7. The sensor
 * measurements are then read using the Sodaq_SHT2x library.
 */
#include <Sodaq_SHT2x.h>        // provides sensor protocol
#include <Wire.h>               // provides communication channel

#define powerPin 7              // sensor power controlled by pin 7

// runs once, when the sketch starts
void setup()
{
  // power sensors, control is inverted, on when low
  pinMode(powerPin, OUTPUT);
  digitalWrite(powerPin, LOW);

  Wire.begin();                 // init sensor communication channel

  Serial.begin(9600);           // init serial console for display
}

// runs over and over again
void loop()
{
  // get and print temperature in degrees Celsius
  float temp = SHT2x.GetTemperature();
  Serial.print("\nTemperature (C): ");
  Serial.print(temp);

  // get and print relative humidity in %
  float hum = SHT2x.GetHumidity();
  Serial.print("\tHumidity (%RH): ");
  Serial.print(hum);

  delay(1000);                  // wait for 1 second
}