#include "DHTesp.h"
#include <WiFi.h>
#include <ThingSpeak.h>


char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannelNumber = 2608261;
const char * myWriteAPIKey = "2SMM7YEBS364PMZG";
int statusCode;



void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

WiFi.mode(WIFI_STA);
ThingSpeak.begin(client);
const int ledPin = 5;

}

void loop() {

connectToCloud();
writeData();
digitalWrite(ledPin, HIGH);  // Turn LED on
delay(1000);                 // Wait for 1 second
digitalWrite(ledPin, LOW);   // Turn LED off
delay(1000);                 // Wait for 1 second
}

void connectToCloud(){
if(WiFi.status() != WL_CONNECTED) {
Serial.print("Attempting to connect");
while(WiFi.status() != WL_CONNECTED) {
WiFi.begin(ssid, pass);
 Serial.print("."); 
 delay(1000);
 }
}
Serial.println("\nConnected.");
}



void writeData(){
ThingSpeak.setField(1, dist);
ThingSpeak.setField(2, data.temperature);
ThingSpeak.setField(3,data.humidity );
statusCode = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);
if(statusCode == 200) //successful writing code
Serial.println("Channel update successful.");
else
Serial.println("Problem Writing data. HTTP error code :" +
String(statusCode));
delay(15000); // data to be uploaded every 15secs
}
#include <WiFi.h>
#include <HTTPClient.h>

// Wi-Fi credentials
const char* ssid = "";
const char* password = "";

// ThingSpeak settings
const char* thingSpeakServer = "2632964";
const char* apiKey = "C4F74E9OGJ716GSC";  // Replace with your Write API Key

// Define GPIO pin connected to the LED
const int ledPin = 5;  // Change this to the GPIO pin you are using for your LED

void setup() {
  // Initialize serial communication
  Serial.begin(115200);

  // Initialize LED pin as output
  pinMode(ledPin, OUTPUT);

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("Connected to WiFi");
}

void loop() {
  // Example: Toggle LED on and off
  digitalWrite(ledPin, HIGH);  // Turn LED on
  delay(1000);                 // Wait for 1 second
  digitalWrite(ledPin, LOW);   // Turn LED off
  delay(1000);                 // Wait for 1 second

  // Send data to ThingSpeak
  sendDataToThingSpeak(digitalRead(ledPin));
}

void sendDataToThingSpeak(int ledState) {
  if (WiFi.status() == WL_CONNECTED) {
    HTTPClient http;
    String url = "http://api.thingspeak.com/update?api_key=";
    url += apiKey;
    url += "&field1=";
    url += ledState;  // Send 1 if LED is on, 0 if off

    http.begin(url);
    int httpCode = http.GET();
    if (httpCode > 0) {
      String payload = http.getString();
      Serial.println("ThingSpeak Response: " + payload);
    } else {
      Serial.println("Error in HTTP request");
    }
    http.end();
  } else {
    Serial.println("Error: Not connected to WiFi");
  }
}