arduino past dht22

//
//    FILE: dht_test.ino
//  AUTHOR: Rob Tillaart
// VERSION: 0.1.07
// PURPOSE: DHT Temperature & Humidity Sensor library for Arduino
//     URL: http://arduino.cc/playground/Main/DHTLib
//
// Released to the public domain
//

#include <dht.h>

dht DHT;

#define DHT11_PIN 4
#define DHT21_PIN 5
#define DHT22_PIN 6

void setup()
{
  Serial.begin(115200);
  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()
{
  // READ DATA
  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);


    // READ DATA
  Serial.print("DHT21, \t");
  chk = DHT.read21(DHT21_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);

  // READ DATA
  Serial.print("DHT11, \t");
  chk = DHT.read11(DHT11_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);
}
//
// END OF FILE
//