Demo Code für eine einfache Blynk Applikation. Auf dem ESP8266 läuft dieser einfache Code. Das Device wir auf den Blynk Cloud Service verbunden und kann dann mit der Blynk App auf einem Smartphone bedient werden. 

 

/**************************************************************
  * Blynk is a platform with iOS and Android apps to control
  * Arduino, Raspberry Pi and the likes over the Internet.
  * You can easily build graphic interfaces for all your
  * projects by simply dragging and dropping widgets.
  *
  *   Downloads, docs, tutorials: http://www.blynk.cc
  *   Blynk community:            http://community.blynk.cc
  *   Social networks:            http://www.fb.com/blynkapp
  *                               http://twitter.com/blynk_app
  *
  * Blynk library is licensed under MIT license
  * This example code is in public domain.
  *
  **************************************************************
  * This example runs directly on ESP8266 chip.
  *
  * You need to install this for ESP8266 development:
  *   https://github.com/esp8266/Arduino
  * 
  * Please be sure to select hte right ESP8266 module
  * in the Tools -> Board menu!
  *
  * Change WiFi ssid, pass, and Blynk auth token to run :)
  *
  **************************************************************
  * This example shows how value can be pushed from Arduino to
  * the Blynk App.
  *
  * WARNING :
  * For this example you'll need SimpleTimer library:
  *   https://github.com/jfturcot/SimpleTimer
  * Visit this page for more information:
  *   http://playground.arduino.cc/Code/SimpleTimer
  *
  * App dashboard setup:
  *   Value Display widget attached to V5
  ***************************************************************
  * You can use this sketch as a debug tool that prints all incoming values
  * sent by a widget connected to a Virtual Pin 1 in the Blynk App.
  *
  * App dashboard setup:
  *   Slider widget (0...100) on V1
  *
  **************************************************************/

#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "9ae5ca0676774f5cbe4908ae4432fb06";

SimpleTimer timer;

void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth, "XN32", "0517Sam!");

  // Setup a function to be called every second
  timer.setInterval(1000L, sendUptime);
}

// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void sendUptime()
{
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V5, millis() / 1000);
}

// This function will be called every time
// when App writes value to Virtual Pin 1
BLYNK_WRITE(V1)
{
  BLYNK_LOG("Wert vom iPhone erhalten: %s", param.asStr());
  // You can also use: 
  // int i = param.asInt() or 
  // double d = param.asDouble()
}

void loop()
{
  Blynk.run();
  timer.run(); // Initiates SimpleTimer
}