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libraries/Blynk/examples/More/RTC_Advanced/RTC_Advanced.ino

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+/*************************************************************
+  Blynk is a platform with iOS and Android apps to control
+  ESP32, Arduino, Raspberry Pi and the likes over the Internet.
+  You can easily build mobile and web interfaces for any
+  projects by simply dragging and dropping widgets.
+
+    Downloads, docs, tutorials: https://www.blynk.io
+    Sketch generator:           https://examples.blynk.cc
+    Blynk community:            https://community.blynk.cc
+    Follow us:                  https://www.fb.com/blynkapp
+                                https://twitter.com/blynk_app
+
+  Blynk library is licensed under MIT license
+  This example code is in public domain.
+
+ *************************************************************
+
+  Blynk can provide your device with time data, like an RTC.
+  Please note that the accuracy of this method is up to several seconds.
+
+  NOTE: there's a better way to get a detailed time and timezone info.
+    See TimeAndLocation example for details!
+
+ *************************************************************/
+
+/* Comment this out to disable prints and save space */
+#define BLYNK_PRINT Serial
+
+/* Fill in information from Blynk Device Info here */
+//#define BLYNK_TEMPLATE_ID           "TMPxxxxxx"
+//#define BLYNK_TEMPLATE_NAME         "Device"
+//#define BLYNK_AUTH_TOKEN            "YourAuthToken"
+
+
+#include <SPI.h>
+#include <Ethernet.h>
+#include <BlynkSimpleEthernet.h>
+
+BlynkTimer timer;
+
+void requestTime() {
+  Blynk.sendInternal("rtc", "sync");
+}
+
+BLYNK_WRITE(InternalPinRTC) {
+  long t = param.asLong();
+  Serial.print("Unix time: ");
+  Serial.print(t);
+  Serial.println();
+}
+
+void setup()
+{
+  // Debug console
+  Serial.begin(9600);
+
+  Blynk.begin(BLYNK_AUTH_TOKEN);
+
+  timer.setInterval(10000L, requestTime);
+}
+
+void loop()
+{
+  Blynk.run();
+  timer.run();
+}
+