#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_I2CDevice.h>  // Include the Adafruit I2C Device library for ESP32-C3 compatibility
#include <Adafruit_SPIDevice.h>  // Include the Adafruit SPI Device library for ESP32-C3 compatibility
#include <DHT.h>

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

#define OLED_RESET 0 // Change this to the appropriate GPIO pin on your ESP32-C3
Adafruit_SSD1306 display(OLED_RESET);

#define DHTPIN 6
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  Wire.begin(8, 10);
  dht.begin();
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // initialize with the I2C addr 0x3C (for the 64x48)
  display.display();
}

void loop() {
  delay(1000);

  // Read sensor values
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    display.println("Failed to read from DHT sensor!");
    return;
  }

  // Clear the display and set the cursor to the top-left corner
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(WHITE);

  // clear buffer and create a page to Display temperature in Celsius
  display.setCursor(20, 0);
  display.println("Temp");
  display.setCursor(32, 18);
  display.print(t);
  display.println(" C");//symbol for degrees Celsius 
  display.display();
  delay(3000);

  // clear buffer and create a page to Display humidity
  display.clearDisplay();
  display.setCursor(20, 0);
  display.println("Humidity");
  display.setCursor(32, 18);
  display.print(h);
  display.println(" %");
  display.display();
  delay(3000);
}