116 lines
2.8 KiB
C++
116 lines
2.8 KiB
C++
#include <WiFi.h>
|
||
#include <WebServer.h>
|
||
#include <time.h>
|
||
|
||
// ====== CHANGE THESE ======
|
||
const char* ssid = "Bertovic";
|
||
const char* password = "18072019";
|
||
|
||
// Time / NTP
|
||
const char* ntpServer = "pool.ntp.org";
|
||
|
||
// Timezone: Croatia (Europe/Zagreb) is usually UTC+1, and UTC+2 in DST.
|
||
// Simplest fixed offset: set UTC+1 (3600). If you want DST auto, tell me and I’ll give that version.
|
||
const long gmtOffset_sec = 3600; // UTC+1
|
||
const int daylightOffset_sec = 0; // Set 3600 if you want to force DST (not automatic)
|
||
|
||
// Web server
|
||
WebServer server(80);
|
||
|
||
String formatTimeNow() {
|
||
struct tm timeinfo;
|
||
if (!getLocalTime(&timeinfo)) {
|
||
return String("Time not available (NTP not synced yet)");
|
||
}
|
||
|
||
char buf[32];
|
||
// YYYY-MM-DD HH:MM:SS
|
||
strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", &timeinfo);
|
||
return String(buf);
|
||
}
|
||
|
||
void handleRoot() {
|
||
// Simple HTML page that fetches /time every second
|
||
String html = R"rawliteral(
|
||
<!DOCTYPE html>
|
||
<html>
|
||
<head>
|
||
<meta charset="utf-8">
|
||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||
<title>ESP32 Time</title>
|
||
<style>
|
||
body { font-family: Arial, sans-serif; margin: 24px; }
|
||
.card { padding: 16px; border: 1px solid #ddd; border-radius: 12px; max-width: 420px; }
|
||
#t { font-size: 1.6rem; font-weight: 700; }
|
||
.small { color: #666; margin-top: 8px; }
|
||
</style>
|
||
</head>
|
||
<body>
|
||
<div class="card">
|
||
<div>Current time:</div>
|
||
<div id="t">Loading...</div>
|
||
<div class="small">Updates every second</div>
|
||
</div>
|
||
|
||
<script>
|
||
async function updateTime(){
|
||
try{
|
||
const r = await fetch('/time', { cache: 'no-store' });
|
||
const text = await r.text();
|
||
document.getElementById('t').textContent = text;
|
||
} catch(e){
|
||
document.getElementById('t').textContent = 'Error';
|
||
}
|
||
}
|
||
updateTime();
|
||
setInterval(updateTime, 1000);
|
||
</script>
|
||
</body>
|
||
</html>
|
||
)rawliteral";
|
||
|
||
server.send(200, "text/html", html);
|
||
}
|
||
|
||
void handleTime() {
|
||
server.send(200, "text/plain", formatTimeNow());
|
||
}
|
||
|
||
void setup() {
|
||
Serial.begin(115200);
|
||
|
||
// Connect Wi-Fi
|
||
WiFi.begin(ssid, password);
|
||
Serial.print("Connecting to WiFi");
|
||
while (WiFi.status() != WL_CONNECTED) {
|
||
delay(500);
|
||
Serial.print(".");
|
||
}
|
||
Serial.println("\nWiFi connected!");
|
||
Serial.print("ESP32 IP address: ");
|
||
Serial.println(WiFi.localIP());
|
||
|
||
// NTP time init
|
||
configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
|
||
|
||
// Optional: wait a bit for first sync
|
||
Serial.println("Syncing time...");
|
||
for (int i = 0; i < 15; i++) {
|
||
if (formatTimeNow().indexOf("not available") == -1) break;
|
||
delay(500);
|
||
}
|
||
Serial.println("Current time: " + formatTimeNow());
|
||
|
||
// Web routes
|
||
server.on("/", handleRoot);
|
||
server.on("/time", handleTime);
|
||
|
||
server.begin();
|
||
Serial.println("Web server started. Open the IP in your browser.");
|
||
}
|
||
|
||
void loop() {
|
||
server.handleClient();
|
||
}
|
||
|