/*
Test project for the Inter Uni Competition 
Environment Control System
Code by Damithra Fernando - StrydoLabs
DHT11/DHT22 - huminidity temperature
Arduino Nano or ESP32
Relays to contrall Output actuators
SIM800c to communication
*/
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
Adafruit_SSD1306 Oled = Adafruit_SSD1306(128,64,&Wire); 
#include <DHT.h>; //dht lib

//Constants
#define DHTPIN 23     
#define DHTTYPE DHT22   
DHT dht(DHTPIN, DHTTYPE);

float hum;  //Stores humidity value
float temp; //Stores temperature value
float hRange = 40.00;
float tRange = 30.00;
void setup()
{
  pinMode (32, INPUT);
  pinMode (35, INPUT);
  Serial.begin(9600);
  Serial.print("Initialize the Environment Control System");
  Serial.println(" ");
  
	dht.begin();
  Oled.begin(SSD1306_SWITCHCAPVCC, 0x3c); 
    Oled.clearDisplay();
    Oled.setTextColor(WHITE);
    Oled.setTextSize(1);
    Oled.setCursor(2,0);
    Oled.print ("Environment control");
    Oled.display(); 
}
void loop()
{
  dht22();
  display();
  delay(4000);
  setOut();

}
void dht22(){
  hum = dht.readHumidity();
  temp= dht.readTemperature();
    
  Serial.print(" Humidity: ");
  Serial.print(hum);
  Serial.print(" %, \t Temp: ");
  Serial.print(temp);
  Serial.println(" °C ");
}
void display(){
  Oled.setTextSize(1);
  Oled.setCursor(2,26);
  Oled.print("Humidity: ");
  //Oled.setTextSize(2);
  Oled.print(hum);
  Oled.print("%");
  Oled.setCursor(2,46);
  Oled.print("Temp: ");
  //Oled.setTextSize(2);
  Oled.print(temp);
  Oled.print("'C");
  Oled.display();
}
void setOut(){
  if(hRange > hum && tRange < temp){
    
    Serial.println("\t Sprinkel on");
    Serial.println("\t Fan On");
    //digitalWrite(32, HIGH);
    //digitalWrite(35, HIGH);

  }
  else if(hRange > hum && tRange > temp){

    Serial.println("\t Sprinkel On");
    Serial.println("\t Fan Off");
    //digitalWrite(32, HIGH);
    //digitalWrite(35, HIGH);

  }
   else if(hRange < hum && tRange < temp){
  
    Serial.println("\t Sprinkel OFF");
    Serial.println("\t Fan On");
    //digitalWrite(32, HIGH);
    //digitalWrite(35, HIGH);
  }
  else {

    Serial.println("\t Sprinkel Off");
    Serial.println("\t Fan Off");
    //digitalWrite(32, HIGH);
    //digitalWrite(35, HIGH);

  }
}