#include <WiFi.h>
#include <WiFiClient.h>
#include <ThingSpeak.h>

const char* server = "api.thingspeak.com";
const char* apiKey = "75ZJWHJJRRIU2DD0";

int sensorPin = 34; // Analog input pin

WiFiClient client;

void setup() {
  Serial.begin(115200);
  Serial.print("Connecting to WiFi");
  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");


  ThingSpeak.begin(client);
}

void loop() {
  float temperature = readTemperature();

  if (isnan(temperature)) {
    Serial.println("Failed to read temperature from sensor!");
    return;
  }

  Serial.print("Temperature: ");
  Serial.println(temperature);

  // Send data to ThingSpeak
  ThingSpeak.setField(1, temperature);
  int response = ThingSpeak.writeFields(2057131, apiKey);
  if (response == 200) {
    Serial.println("Data sent to ThingSpeak successfully!");
  } else {
    Serial.println("Error sending data to ThingSpeak. HTTP error code " + String(response));
  }

  delay(10000); // Wait for 10 seconds before sending the next data
}

float readTemperature() {
  int sensorValue = analogRead(sensorPin);

  float voltage = sensorValue * (3.3 / 4095); // Convert ADC reading to voltage
  float temperature = (voltage - 0.5) * 100; // Assuming linear relationship between voltage and temperature

  return temperature;
}