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

char ssid[]="Wokwi-GUEST";// default user name for wifi
char pass[]="";
WiFiClient client;
unsigned long myChannelNumber = 2272204;
const char * myWriteAPIKey = "E8I7Z8Q88LSYNJDJ";
int statuscode;
int intensity;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
pinMode(34, INPUT);   //potentioment acts as input
pinMode(19, OUTPUT); //red LED acts as output

WiFi.mode(WIFI_STA); //connect to wifi simulator
ThingSpeak.begin(client);  // connect to thingspeak

}

void loop() {
 int input_value=analogRead(34);   //34 is pin in potentiometer
 intensity=map(input_value,0,4095,0,255);
 analogWrite(19,intensity);  //led wil glow
 Serial.println(input_value);
delay(100); // this speeds up the simulation

  if(WiFi.status() != WL_CONNECTED)
    {
      Serial.println("Attempting to Connect");
      while(WiFi.status() != WL_CONNECTED)
      {
        WiFi.begin(ssid,pass);
        Serial.print(".");
        delay(5000);
      }
      Serial.println("\nConnected");
    }

  ThingSpeak.setField(1, intensity);
  
  statuscode = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);

 if(statuscode == 200) //200 indicates successfully updated in thingspeak
  {
     Serial.println("Channel Update Successful");
  }
  else
  {
    Serial.println("Problem in writing Data:" + String(statuscode));
  }
  delay(15000);   //15 seconds
}