#include <WiFi.h>
#include <ThingSpeak.h>
#include "Adafruit_SSD1306.h"
#include "Adafruit_GFX.h"
Adafruit_SSD1306 oled(128,64,&Wire,-1);
char ssid[] = "Wokwi-GUEST";
char password[] = "";
WiFiClient client;

unsigned long myChannelNumber = 2511201; // Replace with your ThingSpeak channel number
const char *myWriteAPIKey = "9IMGZGAB9UBRO5PJ"; // Replace with your ThingSpeak API key

void setup() {
  oled.begin(SSD1306_SWITCHCAPVCC,0x3C);
  Serial.begin(115200);
  pinMode(34, INPUT);
  pinMode(26, OUTPUT);
  pinMode(16, OUTPUT);
  Serial.println("Hello, ESP32!");

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

void loop() {
  int objectDetected = digitalRead(34);
  
  if (objectDetected == HIGH) {
    Serial.println("Object detected");
    digitalWrite(26, HIGH);
    tone(16, 1000);
     oled.clearDisplay();
  oled.setTextSize(1);
  oled.setCursor(0,10);
  oled.setTextColor(SSD1306_WHITE);
  oled.display();
  int value=analogRead(33);
  oled.println("Object: "+String(value));
  oled.display();
  } else {
    Serial.println("No object detected");
    digitalWrite(26, LOW);
    noTone(16);
  }

  // Update ThingSpeak field based on object detection status
  int status = ThingSpeak.writeField(myChannelNumber, 1, objectDetected, myWriteAPIKey);
  if (status == 200) {
    Serial.println("ThingSpeak update successful");
  } else {
    Serial.print("Problem updating ThingSpeak. HTTP error code: ");
    Serial.println(status);
  }
  
  delay(1000); // Adjust delay as needed
}