#include <LiquidCrystal.h>
#include <SimpleDHT.h>
#define SimpleDHTPIN 6
int pinDHT11 = 6;
SimpleDHT22 DHT11(pinDHT11);

int sensor_pin = A0;
int output_value ;
int temp_led = 8;
int humi_led = 9;
int moisture_led = 10;
int pump = 7;
int chk;
float h;
float t;
float lastH,lastT,lastR;
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup()
{

  Serial.begin(9600);
  pinMode(temp_led, OUTPUT);

  pinMode(temp_led, OUTPUT);

  pinMode(moisture_led, OUTPUT);
  pinMode(pump, OUTPUT);
  pinMode(sensor_pin, INPUT);
  pinMode(pinDHT11, INPUT);
  lcd.begin (16, 2);
  lcd.setCursor(0, 0);
  lcd.print(" Welcome to");
  lcd.setCursor(0, 1);
  lcd.print(" Smart Irrigation");
  delay(2000);
  lcd.clear();

}
void loop()
{

  int err = SimpleDHTErrSuccess;
  if ((err = DHT11.read2(&t, &h, NULL)) != SimpleDHTErrSuccess) {
    Serial.print("Read DHT11 failed, err="); Serial.print(SimpleDHTErrCode(err));
    Serial.print(","); Serial.println(SimpleDHTErrDuration(err)); delay(1000);
    return;
  }

  output_value = analogRead(sensor_pin);
  output_value = map(output_value, 550, 0, 0, 100);

  //only update screen if a values has changed..
if (lastR!=output_value || lastH!=h || lastT!=t){
  //remember..
  lastR=output_value;
  lastH=h;
  lastT=t;

  lcd.setCursor(0, 0);
  lcd.print("Temp  Humi  Moist");
  lcd.setCursor(1, 1);
  lcd.print(int(trunc(t)));
  lcd.print("C.  ");
  lcd.print(int(trunc(h)));
  lcd.print("%   ");
  lcd.print(output_value);
  lcd.println("%");
}

  
}