#include <WiFi.h>
#include <ThingSpeak.h>
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannelNumber = 2265129;
const char * myWriteAPIKey = "34ANK12O64WU40A4";
const int LM35 = 35;
float temp;
int statusCode;

void setup() {
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}
void loop() {
  connectToCloud();
  computeData();
  writeData();
  delay(1000);
}
void connectToCloud(){
  if(WiFi.status() != WL_CONNECTED) {
    Serial.print("Attempting to connect");
    while(WiFi.status() != WL_CONNECTED) 
    {
      WiFi.begin(ssid, pass);
      for(int i=0;i<5;i++) 
      {
        Serial.print(".");
        delay(1000);
      }
    }
    Serial.println("\nConnected.");
  }
}
void computeData(){
  int ADC;
  ADC = analogRead(LM35);
  temp = (ADC * 3);
  temp = temp / 10;
  Serial.print("Tempperature = " + String(temp) + " \xC2\xB0");
  delay(1000);
}
void writeData(){
  statusCode = ThingSpeak.writeField(myChannelNumber,1,temp,myWriteAPIKey);
  if(statusCode == 200) //successful writing code
    Serial.println("\nChannel updated successful.");
  else
    Serial.println("\nProblem Writing data. HTTP error code :" + String(statusCode));
  delay(1000);
}