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<?xml encoding="utf-8" ?><p>ESP32 NTP Example.ino</p><p>by <a href="https://wokwi.com/makers/urish" target="_blank" rel=" noopener">urish</a></p><p><a href="https://docs.wokwi.com/?utm_source=wokwi" target="_blank" rel=" noopener">Docs</a></p><p>ESP32 NTP Example.inodiagram.jsonlibraries.txtLibrary Manager</p><pre>
<code>// Learn about the ESP32 WiFi simulation in
// https://docs.wokwi.com/guides/esp32-wifi
#include <WiFi.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);
#define NTP_SERVER "pool.ntp.org"
#define UTC_OFFSET 0
#define UTC_OFFSET_DST 0
void spinner() {
static int8_t counter = 0;
const char* glyphs = "\xa1\xa5\xdb";
LCD.setCursor(15, 1);
LCD.print(glyphs[counter++]);
if (counter == strlen(glyphs)) {
counter = 0;
}
}
void printLocalTime() {
struct tm timeinfo;
if (!getLocalTime(&timeinfo)) {
LCD.setCursor(0, 1);
LCD.println("Connection Err");
return;
}
LCD.setCursor(8, 0);
LCD.println(&timeinfo, "%H:%M:%S");
LCD.setCursor(0, 1);
LCD.println(&timeinfo, "%d/%m/%Y %Z");
}
void setup() {
Serial.begin(115200);
LCD.init();
LCD.backlight();
LCD.setCursor(0, 0);
LCD.print("Connecting to ");
LCD.setCursor(0, 1);
LCD.print("WiFi ");
WiFi.begin("Wokwi-GUEST", "", 6);
while (WiFi.status() != WL_CONNECTED) {
delay(250);
spinner();
}
Serial.println("");
Serial.println("WiFi connected");
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
LCD.clear();
LCD.setCursor(0, 0);
LCD.println("Online");
LCD.setCursor(0, 1);
LCD.println("Updating time...");
configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);
}
void loop() {
printLocalTime();
delay(250);
}
</code></pre><p>Simulation</p><p>Loading<br>
esp32-devkit-c-v4</p><p>1 GND VCC SDA SCL</p><p> </p>