Add files via upload

2026-01-04 22:27:45 +01:00
commit 945278cc80
6 changed files with 870 additions and 0 deletions
--- a/4exampleJavaUpdate/4exampleJavaUpdate.ino
+++ b/4exampleJavaUpdate/4exampleJavaUpdate.ino
@@ -0,0 +1,117 @@
+#include <WiFi.h>
+#include <WebServer.h>
+#include <ESPmDNS.h>
+#include <time.h>
+
+// ================== CHANGE THESE ==================
+const char* ssid     = "Bertovic";
+const char* password = "18072019";
+
+// mDNS name -> http://myhome.local/
+const char* mdnsName = "myhome";
+
+// NTP
+const char* ntpServer = "pool.ntp.org";
+
+// Timezone example: Europe/Zagreb (CET = UTC+1). DST is not automatic in this simple offset mode.
+// If you want automatic DST, tell me and I’ll give the TZ-string version.
+const long gmtOffset_sec = 3600;   // UTC+1
+const int  daylightOffset_sec = 0;
+// ==================================================
+
+WebServer server(80);
+
+String getTimeString() {
+  struct tm timeinfo;
+  if (!getLocalTime(&timeinfo)) {
+    return "Time not ready (NTP sync)";
+  }
+  char buf[32];
+  strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", &timeinfo);
+  return String(buf);
+}
+
+void handleRoot() {
+  // Smooth updates: page loads once, then fetches /time every second
+  String page = 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; }
+    #clock { font-size: 1.8rem; font-weight: 700; margin-top: 8px; }
+    .small { color: #666; margin-top: 10px; }
+  </style>
+</head>
+<body>
+  <div class="card">
+    <div>Current time:</div>
+    <div id="clock">Loading...</div>
+    <div class="small">Updates every second • Served by ESP32</div>
+  </div>
+
+  <script>
+    async function updateTime() {
+      try {
+        const r = await fetch('/time', { cache: 'no-store' });
+        const t = await r.text();
+        document.getElementById('clock').textContent = t;
+      } catch (e) {
+        document.getElementById('clock').textContent = 'Error getting time';
+      }
+    }
+    updateTime();
+    setInterval(updateTime, 1000);
+  </script>
+</body>
+</html>
+)rawliteral";
+
+  server.send(200, "text/html", page);
+}
+
+void handleTime() {
+  server.send(200, "text/plain", getTimeString());
+}
+
+void setup() {
+  Serial.begin(115200);
+
+  // Wi-Fi connect
+  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: ");
+  Serial.println(WiFi.localIP());
+
+  // Start mDNS
+  if (!MDNS.begin(mdnsName)) {
+    Serial.println("mDNS start FAILED");
+  } else {
+    Serial.print("mDNS started: http://");
+    Serial.print(mdnsName);
+    Serial.println(".local/");
+  }
+
+  // NTP time
+  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
+
+  // Web routes
+  server.on("/", handleRoot);
+  server.on("/time", handleTime);
+
+  server.begin();
+  Serial.println("HTTP server started");
+}
+
+void loop() {
+  server.handleClient();
+}