init commit

NTP-Server-Client/NTP-Server-Client.ino

@@ -0,0 +1,63 @@
+#include <ESP8266WiFi.h>
+#include <time.h>
+
+const char* ssid     = "Wayne Manor";
+const char* password = "einfach10zeichen!";
+const char* TZ_INFO  = "CET-1CEST,M3.5.0,M10.5.0/3";
+
+void connectWiFi() {
+  Serial.print("Verbinde mit WLAN");
+
+  WiFi.begin(ssid, password);
+
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print(".");
+  }
+
+  Serial.println("\nVerbunden!");
+  Serial.print("IP: ");
+  Serial.println(WiFi.localIP());
+}
+
+void syncTime() {
+  configTime(TZ_INFO, "pool.ntp.org", "time.nist.gov");
+
+  Serial.print("Synchronisiere Zeit");
+
+  time_t now = time(nullptr);
+  while (now < 100000) {
+    delay(500);
+    Serial.print(".");
+    now = time(nullptr);
+  }
+
+  Serial.println("\nZeit synchronisiert!");
+}
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("\nStarte ESP8266...");
+
+  connectWiFi();
+  syncTime();
+}
+
+void loop() {
+  time_t now = time(nullptr);
+  struct tm* t = localtime(&now);
+
+  if (t) {
+    Serial.printf("%02d:%02d:%02d  %02d.%02d.%04d\n",
+    t->tm_hour,
+    t->tm_min,
+    t->tm_sec,
+    t->tm_mday,
+    t->tm_mon + 1,
+    t->tm_year + 1900);
+  } else {
+    Serial.println("Fehler beim Lesen der Zeit");
+  }
+
+  delay(1000);
+}