// MONITORING SENSOR DS18B20 THINKSPEAK

#include <OneWire.h> // library
#include <DallasTemperature.h>
#include <WiFi.h>
#include "ThingSpeak.h"

#define oneWire_PIN 23 // pin arduino

const char* ssid = "Wokwi-GUEST";
const char* password = "";

float tempSensor;

unsigned long channelID = 2099885;
const char* WriteAPIKey ="4O14Y60KRZ9ANKEV";


int intervalSensor = 2000;
long prevMillisThingSpeak = 0;
int IntervalThingSpeak = 15000;
int erro;

OneWire oneWire(oneWire_PIN); // agar wire yg di inlude agar dapat berfungsi
DallasTemperature sensors(&oneWire); // penamaan sensor Ds18b20 dengan nama sensors
WiFiClient  client;
int keyIndex = 0;            // your network key Index number (needed only for WEP)


int number = 0;
void setup() {
  Serial.begin(115200);  // Initialize serial
  WiFi.mode(WIFI_STA); 
  ThingSpeak.begin(client);  // Initialize ThingSpeak
 // dht.begin();
  sensors.begin(); // agar sensor berfungsi
}
void loop() {
// Connect or reconnect to WiFi
 
  if(WiFi.status() != WL_CONNECTED){
    Serial.print("conectando WIFI");
    WiFi.begin(ssid,password);
    while(WiFi.status() != WL_CONNECTED){
    // Connect to WPA/WPA2 network. Change this line if using open or WEP network
      Serial.print(".");
      delay(5000);     
    } 
    Serial.println("\nConnected.");
  }
  sensors.requestTemperatures(); // sensornya agar dapat membaca temperatur
  tempSensor = sensors.getTempCByIndex(0);

  Serial.print(tempSensor); Serial.println("  *C");
  if (millis() - prevMillisThingSpeak > IntervalThingSpeak)
  {
    ThingSpeak.setField(1,tempSensor);
    erro = ThingSpeak.writeFields(channelID,WriteAPIKey);
    Serial.println("Temperature update successful.");
  }
  // 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.

  if(erro == 200){
    Serial.println("Temperature update successful.");
  }
  else{
    Serial.println("Problem updating channel." + String(erro));
  }
  delay(5000); // Wait 20 seconds to update the channel again 
  }