// Bibliotecas----------------------------------------------------------
#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal_I2C.h>
#include <ThingSpeak.h>
#include <WiFi.h>

// GPIO onde o DS18B20 está conectado
const int OneWireBus = 4;
const char* WIFI_NAME     = "Wokwi-GUEST";
const char* WIFI_PASSWORD = "";
const int   myChannelNumber = 2958695; 
const char* myApiKey        = "LN740LM3U73SFGJH";

WiFiClient client;

// Instância OneWire para o DS18B20
OneWire oneWire(OneWireBus);
DallasTemperature sensors(&oneWire);

// LCD I2C no endereço 0x27 com 16 colunas e 2 linhas
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  Serial.begin(115200);
  sensors.begin();
  lcd.init();
  lcd.backlight();
   
  //WiFi e thingSpeak
  WiFi.begin(WIFI_NAME, WIFI_PASSWORD);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("WiFi não conectado");
  }
  Serial.println("WiFi conectado!");
  Serial.println("IP local: " + WiFi.localIP().toString());
  WiFi.mode(WIFI_STA);
 
  ThingSpeak.begin(client);
}


void loop() {
  // Leitura do DS18B20
  sensors.requestTemperatures();
  float temperaturaC = sensors.getTempCByIndex(0); 
  float temperaturaF = sensors.getTempFByIndex(0);

  ThingSpeak.setField(1, temperaturaC);
  int status = ThingSpeak.writeFields(myChannelNumber, myApiKey);

  Serial.println("---");
  Serial.printf("Temp: %.2f °C\n", temperaturaC);
  if (status == 200) {
    Serial.println("Dados enviados com sucesso!");
  } else {
    Serial.printf("Erro ao enviar: %d\n", status);
  }
 
  delay(10000);
  // Exibe a temperatura do DS18B20 no Serial Monitor
  Serial.print("DS18B20: ");
  Serial.print(temperaturaC);
  Serial.println(" ºC");
  Serial.print("DS18B20: ");
  Serial.print(temperaturaF);
  Serial.println(" ºF");

  // Exibe a temperatura no LCD
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("DSc = ");
  lcd.print(temperaturaC);
  lcd.print(" C");
  lcd.setCursor(0,1);
  lcd.print("DSf = ");
  lcd.print(temperaturaF);
  lcd.print(" F");
  delay(5000);


}