#include <ESP8266WiFi.h>
#define WIFI_SSID           "IoT"
#define WIFI_PASSWORD       "1234567890"
#define SERIAL_DEBUG_BAUD   9600
#define pinBuzzer D6
#include "DHTesp.h"
#include <Wire.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_GFX.h>
#include <Fonts/FreeSerif9pt7b.h>
#define SCREEN_WIDTH 128 
#define SCREEN_HEIGHT 64 
#define OLED_RESET -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
const int DHT_PIN = D7;
DHTesp dhtSensor;
int status = WL_IDLE_STATUS;

void InitWiFi()
{
  Serial.println("Connecting to AP ...");
  WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("Connected to AP");
}
void reconnect() {
  status = WiFi.status();
  if ( status != WL_CONNECTED) {
    WiFi.begin(WIFI_SSID, WIFI_PASSWORD);
    while (WiFi.status() != WL_CONNECTED) {
      delay(500);
      Serial.print(".");
    }
    Serial.println("Connected to AP");
  }
}
void setup(){
  Serial.begin(SERIAL_DEBUG_BAUD);
  delay(100);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  Serial.println("Challenge Minggu 2"); 
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { 
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); 
  }
  display.clearDisplay();
  display.setTextSize(1);             
  display.setTextColor(WHITE);        
  display.setCursor(0,0);             
  display.println("IOT MASTER CLASS");
  display.setTextSize(1);             
  display.setTextColor(WHITE); 
  display.println("CHALLENGE MINGGU 2");
  display.setTextSize(1);      
  display.setTextColor(WHITE);
  display.print("Harun Zein");
  display.display();
  delay(5000);
}
void loop(){
  float h = dhtSensor.getHumidity();
  float t = dhtSensor.getTemperature();
  if (isnan(h)|| isnan(t))
  {
    Serial.println("Failed to read from DHT sensor");
    return;
  }
  Serial.print("Temperature : ");
  Serial.println(t);
  Serial.print("Humidity : ");
  Serial.println(h);
  delay(1000);
  if( t >= 40){    
   tone(pinBuzzer, 1000);
    delay(200);     
    tone(pinBuzzer, 500);
    delay(200);
  }
  else{
    noTone(pinBuzzer);
  } 
  display.clearDisplay();
  display.setTextSize(1);
  display.setCursor(0,0);     
  display.setTextColor(WHITE);
  display.println("Temperature:");
  display.setTextSize(2);  
  display.setTextColor(WHITE);
  display.print(t);
  display.println(" 'C");
  display.setTextSize(1);
  display.println("Humidity:");
  display.setTextSize(2);  
  display.setTextColor(WHITE);
  display.print(h);
  display.display();
  delay(500);
}