#include <dht.h>

dht DHT;

#define DHT22_PIN A4

void setup()
{
  Serial.begin(9600);
  
  pinMode(A5, OUTPUT);
  Serial.println("DHT TEST PROGRAM ");
  Serial.print("LIBRARY VERSION: ");
  Serial.println(DHT_LIB_VERSION);
  Serial.println();
  Serial.println("Type,\tstatus,\tHumidity (%),\tTemperature (C)");
}

void loop()
{

  Serial.print("DHT22, \t");
  int chk = DHT.read22(DHT22_PIN);
  switch (chk)
  {
    case DHTLIB_OK:  
		Serial.print("OK,\t"); 
		break;
    case DHTLIB_ERROR_CHECKSUM: 
		Serial.print("Checksum error,\t"); 
		break;
    case DHTLIB_ERROR_TIMEOUT: 
		Serial.print("Time out error,\t"); 
		break;
    default: 
		Serial.print("Unknown error,\t"); 
		break;
  }
  // DISPLAY DATA
  Serial.print(DHT.humidity, 1);
  Serial.print(",\t");
  Serial.println(DHT.temperature, 1);
  delay(1000);

 
 
   // Set a threshold for humidifer to turn on and off
   if (DHT.humidity < 75) {     
     // turn humidifer on:    
     digitalWrite(A5, HIGH);
   } else {
     // turn humidifer off:
     digitalWrite(A5, LOW);
   }
   
   
}

//
// END OF FILE
//