#define BLYNK_TEMPLATE_ID "TMPL3pwF-ZKzP"
#define BLYNK_TEMPLATE_NAME "HOME PLANTS SAFETY SENSOR"
#define BLYNK_AUTH_TOKEN "EZ-MHJVMfxS9ZQkEJqz8AuabTq1X2fE_"

const int led=19;
const int pir=14;

#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Wire.h>
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

//Initializing OLED display
Adafruit_SSD1306 display(128,64,&Wire,-1);

//Characterizing the TEMPELATE_ID, NAME and AUTH_TOKEN
char auth[]=BLYNK_AUTH_TOKEN;

char ssid[]="Wokwi-GUEST";
char password[]="";

BlynkTimer timer;

const int buzz=12;

void sendDataToBlynk()
{
  int ir1=digitalRead(pir);
  Blynk.virtualWrite(V1,ir1);
}
void setup() 
{
  Serial.begin(115200);
  if(!display.begin(SSD1306_SWITCHCAPVCC,0x3C))
  {
    Serial.write("Failed....");
    for(;;);
  }
  
  pinMode(led, OUTPUT);
  pinMode(buzz, OUTPUT);
  pinMode(pir, INPUT);
  ledcAttach(buzz, 0); // Attach pin 12 to channel 0

  delay(1000);
  display.clearDisplay();
  display.setTextSize(1);
  display.setCursor(0,10);
  display.setTextColor(WHITE);
  display.println("Welcome");
  display.display();
  

  //Connecting to WiFi
  Serial.println("Connecting to WiFi");
  WiFi.begin(ssid,password);
  while (WiFi.status()!=WL_CONNECTED)
  {
    delay(1000);
    Serial.println("Attempting to connect WiFi");
  }
  Serial.println("Connected to WiFi");

  //Connecting to Blynk platform
  Serial.println("Connecting to Blynk");
  Blynk.begin(BLYNK_AUTH_TOKEN,ssid,password);
  while (!Blynk.connected())
  {
    delay(1000);
    Serial.println("Attempting to connect Blynk");
  }
  Serial.println("Connected to Blynk");

  timer.setInterval(2000L,sendDataToBlynk);
}

void loop() 
{
  // put your main code here, to run repeatedly:
  //Run Blynk
  Blynk.run();
  timer.run();
  int ir1=digitalRead(pir);
  // Send the PIR sensor value to Blynk
  Blynk.virtualWrite(V1, pir);
  if (ir1==0)
  {
    delay(1000);
    display.clearDisplay();
    display.setTextSize(1);
    display.setCursor(0,10);
    display.setTextColor(WHITE);
    display.println("Pests not detected");
    display.display();
  }
  else
  {
    Blynk.logEvent("Pests have been detected. Please turn on the ultrasonic sound");
    if (Blynk.connected()) 
    { 
      int frequency = 4000; 
      int resolution = 8;
      ledcWriteTone(0, frequency); 
      int value = BlynkWidgetRead(led); 
      digitalWrite(led, value); 
    }

    //Displaying message in oled screen
    delay(1000);
    display.clearDisplay();
    display.setTextSize(1);
    display.setCursor(0,10);
    display.setTextColor(WHITE);
    display.println("Pests not detected");
    display.display();
  }
}