#include <WiFi.h>
#include <WiFiUdp.h>
#include <NTPClient.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
const char* ssid = "Wokwi-GUEST";
const char* password = "";
const long utcOffsetInSeconds = -21600; /* UTC-6h you need to calculate the time zone, example: UTC 5h =60*60*5=18000)*/
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org", utcOffsetInSeconds);
void setup() {
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display.clearDisplay();
display.setTextColor(WHITE);
Serial.begin(115200);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to WiFi...");
}
timeClient.begin();
timeClient.setTimeOffset(utcOffsetInSeconds);
Serial.println("Ready!");
}
void loop() {
timeClient.update();
display.clearDisplay();
display.setCursor(37, 0);
display.setTextSize(2);
display.println("Hora:");
display.setCursor(10, 20);
display.setTextSize(2);
display.print(timeClient.getFormattedTime());
display.display();
delay(1000);
}