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

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

WiFiClient  client;

unsigned long myChannelNumber = 1896462;
const char * myWriteAPIKey = "XI198KRHOOVD58JS";

// Timer variables
unsigned long lastTime = 0;
unsigned long timerDelay = 3000;

// Variable to hold temperature readings
float analogInput;
//uncomment if you want to get temperature in Fahrenheit
//float temperatureF;

void setup() {
  pinMode(33,INPUT);
  Serial.begin(115200);  //Initialize serial
 
  WiFi.mode(WIFI_STA);  
 
  ThingSpeak.begin(client);  // Initialize ThingSpeak
}

void loop() {
  if ((millis() - lastTime) > timerDelay) {
  
    // Connect or reconnect to WiFi
    if(WiFi.status() != WL_CONNECTED){
      Serial.print("Attempting to connect");
      while(WiFi.status() != WL_CONNECTED){
        WiFi.begin(ssid, password);
        delay(5000);    
      }
      Serial.println("\nConnected.");
    }

    // Get a new reading
analogInput = analogRead(33)*0.00805;
    Serial.print("Analog Input(ºC): ");
    Serial.println(analogInput);

    // Write to ThingSpeak. There are up to 8 fields in a channel, allowing you to store up to 8 different
    // pieces of information in a channel.  Here, we write to field 1.
    int x = ThingSpeak.writeField(myChannelNumber, 1, analogInput, myWriteAPIKey);
    if(x == 200){
      Serial.println("Channel update successful.");
    }
    else{
      Serial.println("Problem updating channel. HTTP error code " + String(x));
    }
    lastTime = millis();
  }
}