#include <Wire.h>//alows communications with I2C devices
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>//library for Monochrome OLEDs based on SSD1306 drivers

#define SCREEN_WIDTH 128 // OLED width,  in pixels
#define SCREEN_HEIGHT 64 // OLED height, in pixels
//----------- Temperature -----------------
#include <DHT.h>

// Define the sensor type (DHT22)
#define DHT_TYPE DHT22

// Pin where your DHT11 is connected to
#define DHT_PIN 2

// Initialize the DHT sensor
DHT dht(DHT_PIN, DHT_TYPE);


// create an OLED display object connected to I2C
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  Serial.begin(9600);// Initialize serial communication
  // Initialize the DHT sensor
  dht.begin();

  // initialize OLED display with I2C address 0x3C
  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("failed to start SSD1306 OLED"));
    while (1);
  }

  delay(2000);         // wait two seconds for initializing
  oled.clearDisplay(); // clear display
}

void loop() {
 float temperature = dht.readTemperature();
 float humidity = dht.readHumidity();

  oled.setTextSize(1);         // set text size
  oled.setTextColor(WHITE);    // set text color
  oled.setCursor(21, 0);       // set position to display (x,y)
  oled.print("Weather Station");
  oled.setCursor(0, 20);       // set position to display (x,y)
  oled.print("Temperature"); // set text
  oled.setCursor(80, 20);       // set position to display (x,y)
  oled.print(temperature); // set text
  oled.setCursor(120,20);
  oled.print("C");
  oled.setCursor(0,45);//set position to display (x,y)
  oled.print("Humidity");// set text
  oled.setCursor(80,45);
  oled.print(humidity);// set text
  oled.setCursor(120,45);
  oled.print("%");
  oled.drawLine(0, 15, 128, 15, 1);//horiziontal line 1 (x1,y1,x2,y2,colour)
  oled.drawLine(0, 35, 128, 35, 1);//horiziontal line 2
  oled.drawLine(70, 16, 70, 64, 1);//vertical line 1
  oled.display();              // display on OLED
    

//------Temperature Code Starts Here-----------

// Read temperature and humidity data from the sensor
 // float temperature = dht.readTemperature();
 // float humidity = dht.readHumidity();

  // Check if the data was successfully read from the sensor
  if (!isnan(temperature) && !isnan(humidity)) {
    // Print the temperature and humidity values to the serial monitor
    Serial.print("Temperature (°C): ");
    Serial.println(temperature);
    Serial.print("Humidity (%): ");
    Serial.println(humidity);
  } else {
    // If there was an error reading data from the sensor, print an error message
    Serial.println("Error reading from DHT sensor");
  }

  // Delay for a few seconds before taking the next reading
  delay(2000);


}