#include <dht.h>
#include <DistanceSRF04.h>
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

dht DHT;

#define DHT11_PIN A1

LiquidCrystal_I2C lcd(0x27,20,4);
DistanceSRF04 Dist;
int distance;

void setup()
{
  lcd.init();                      // initialize the lcd 
  lcd.init();
  
  Serial.begin(9600);
  Dist.begin(2,3);
  
  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
  lcd.backlight();

  distance = Dist.getDistanceCentimeter();
  Serial.print("\nDistance in centimers: ");
  Serial.print(distance);  
  
  Serial.print("DHT11, \t");
  int 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;
    case DHTLIB_ERROR_CONNECT:
        Serial.print("Connect error,\t");
        break;
    case DHTLIB_ERROR_ACK_L:
        Serial.print("Ack Low error,\t");
        break;
    case DHTLIB_ERROR_ACK_H:
        Serial.print("Ack High error,\t");
        break;
    default: 
		Serial.print("Unknown error,\t"); 
		break;
  }
  // DISPLAY DATA
  lcd.setCursor(0,0);
  lcd.print("T:");
  lcd.setCursor(2,0);
  lcd.print(DHT.temperature);
  lcd.setCursor(7,0);
  lcd.print((char)223);
  lcd.setCursor(8,0);
  lcd.print("C");
  
  lcd.setCursor(11,0);
  lcd.print(distance);
  lcd.setCursor(14,0);
  lcd.print("CM");
  
  lcd.setCursor(0,1);
  lcd.print("H:");
  lcd.setCursor(2,1);
  lcd.print(DHT.humidity);
  lcd.setCursor(7,1);
  lcd.print((char)37);
  
  Serial.print(DHT.humidity, 1);
  Serial.print(",\t");
  Serial.println(DHT.temperature, 1);

  delay(2000);
}
//
// END OF FILE
//