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// Definition für DHT -----------------

#define DHTPIN 2 // what pin we're connected to

#define DHTTYPE DHT22 // DHT 22 (AM2302)

#include "DHT.h"

// Definition für Ethernet Shield und Plotly -----------------

#include <Ethernet.h>

#include <SPI.h>

#include "plotly_streaming_ethernet.h"

// Setup DHT ----------------------------------

DHT dht(DHTPIN, DHTTYPE);

// Setup Plotly -------------------------

// Sign up to plotly here: https://plot.ly

// View your API key and streamtokens here: https://plot.ly/settings

#define nTraces 2

// View your tokens here: https://plot.ly/settings

// Supply as many tokens as data traces

// e.g. if you want to ploty A0 and A1 vs time, supply two tokens

char *tokens[nTraces] = {"xxxxtokenxxxxx", "xxxxtokenxxxxx"};

// arguments: username, api key, streaming token, filename

plotly graph("xxxxxusernamexxxxxx", "xxxxxAPIkeyxxxxxx", tokens, "DHT", nTraces);

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

byte my_ip[] = { 199, 168, 222, 18 }; // google will tell you: "public ip address"

void startEthernet(){

    Serial.println("... Initializing ethernet");

    if(Ethernet.begin(mac) == 0){

        Serial.println("... Failed to configure Ethernet using DHCP");

        // no point in carrying on, so do nothing forevermore:

        // try to congifure using IP address instead of DHCP:

        Ethernet.begin(mac, my_ip);

    }

    Serial.println("... Done initializing ethernet");

    delay(1000);

}

void setup() {

  // Open serial communications and wait for port to open:

  Serial.begin(9600);

  while (!Serial) {

    ; // wait for serial port to connect. Needed for Leonardo only

  }

  startEthernet();

  graph.fileopt="overwrite"; // See the "Usage" section in https://github.com/plotly/arduino-api for details

  bool success;

  success = graph.init();

  if(!success){while(true){}}

  graph.openStream();

}

unsigned long x;

int y;

void loop() {

// DHT auslesen --------------------------------------------- START

delay(2000);

// Reading temperature or humidity takes about 250 milliseconds!

// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)

float h = dht.readHumidity();

// Read temperature as Celsius

float t = dht.readTemperature();

// Read temperature as Fahrenheit

float f = dht.readTemperature(true);

float hi = dht.computeHeatIndex(f, h);

// DHT auslesen --------------------------------------------- ENDE

// PLOTLY schreiben ----------------------------------------- START 

  graph.plot(millis(), h, tokens[0]);

  graph.plot(millis(), t, tokens[1]);

// PLOTLY schreiben ----------------------------------------- ENDE

}