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

// Replace with your network credentials
const char* ssid = "Wokwi-GUEST"; // your network SSID (name)
const char* password = ""; // your network password

// ThingSpeak information
unsigned long myChannelNumber = 2305284;
const char * myWriteAPIKey = "UJO9HGT5RQM8CQMU";
const char * server = "api.thingspeak.com";

WiFiClient client;

void setup() {
  Serial.begin(115200);
  
  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi..");
  }
  Serial.println("Wifi connected !");
  Serial.println("Local IP: " + String(WiFi.localIP()));
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client); 
 
  pinMode(13, INPUT);
  pinMode(2, OUTPUT);
}

void loop() {
  int value = analogRead(13);
  int intensity = map(value, 0, 1023, 0, 255);
  analogWrite(2, intensity);
  Serial.println(intensity);

  ThingSpeak.setField(1, intensity);

  // Write to the ThingSpeak channel
  int x = ThingSpeak.writeFields(myChannelNumber, myWriteAPIKey);

  if(x == 200){
    Serial.println("Channel update successful.");
  }
  else{
    Serial.println("Problem updating channel. HTTP error code " + String(x));
  }

  delay(20000); // Wait a bit before the next update
}