#include <Adafruit_GFX.h>
#include <ThingSpeak.h>
#include <WiFi.h>
#include <Adafruit_SSD1306.h>
#include <SPI.h>
#include <Wire.h>
#include <DHT.h>

#define DHTTYPE DHT22
#define DHTPIN 4
DHT dht(DHTPIN, DHTTYPE);

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

#define OLED_RESET     -1
#define SCREEN_ADDRESS  0x3D
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);



const int LED_PIN = 13;
const char* WIFI_NAME = "Wokwi-Guest";
const char* WIFI_PASSWORD = "";
const int myChannelNumber = ;
const char* myAPIKey = "";
const char* server = "api.thingspeak.com";

WifiClient client;

void setup() {
  Serial.begin(115200);
  Serial.print("DHT ESP32");
  display.begin(SSD1306_SWITCHAPVCC, SCREEN_ADDRESS);
  display.clearDisplay();
  display.setTextSize(2);
  display.setTextColor(SSD1306_White);
  display.setCursor(0,0);
  display.print("DHT ESP32");
  display.display();
  delay(2000);




  pinMode(LED_PIN, OUTPUT);
  dht.begin();
  
  display.clearDisplay();
  display.setCursor(0, 20);
  display.print("CHECK WIFI");

  Wifi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (Wifi.status() != WL_CONNECTED){
    delay(1000);
    Serial.println("Wifi not connected");
  }

  display.setCursor(0, 30);
  display.println("Wifi connected !");
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(Wifi.localIP()));
  Wifi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  
  }

  void loop() {
    int x = ThingSpeak.writeFields(myChannelNumber,myAPIKey);

    Serial.println("Temp: " + String(data.temperature, 2) + "C");
    Serial.println("Humidity: " + String(data.humidity, 1) + "%");

    if(x == 200){
      Serial.println("Data pushed successful");
    }
    else{
      Serial.println("Push error" + String(x));
    }
    Serial.println("---");
    delay(20000)
  }