/*
  Repeating Web client

 Circuit:
 * Ethernet shield attached to pins 10, 11, 12, 13
 * Sensor mit 4,7K Ohm auf Data <->5V auf pin 9
 */

#include <SPI.h>
#include <Ethernet.h>
#include <EthernetUdp.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define host "10.188.17.6"
#define port 1234

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

// initialize the library instance:
EthernetClient client;
OneWire oneWire(9);
EthernetUDP Udp;

// Pass our oneWire reference to Dallas Temperature. 
DallasTemperature sensors(&oneWire);
char server[] = host;

unsigned long lastConnectionTime = 0;             // last time you connected to the server, in milliseconds
const unsigned long postingInterval = 10000L; // delay between updates, in milliseconds
// the "L" is needed to use long type numbers

void setup() {
  Serial.begin(9600);
  while (!Serial);


  // give the ethernet module time to boot up:
  delay(1000);
  // start the Ethernet connection using a fixed IP address and DNS server:
  Ethernet.begin(mac);
  // print the Ethernet board/shield's IP address:
  Serial.print("My IP address: ");
  Serial.println(Ethernet.localIP());

  sensors.begin();
  Udp.begin(1234);
}

void loop() {
  // if there's incoming data from the net connection.
  // send it out the serial port.  This is for debugging
  // purposes only:
  if (client.available()) {
    char c = client.read();
    Serial.write(c);
  }

  // if ten seconds have passed since your last connection,
  // then connect again and send data:
  if (millis() - lastConnectionTime > postingInterval) {
    httpRequest();
    delay(10);
  } else {
    delay(20);
  }
}

void httpRequest() {
  Serial.println("Sending");
  //client.stop();
  sensors.requestTemperatures();

  Udp.beginPacket(server, port);
  int temp = sensors.getTempCByIndex(0)*100;
  Serial.println(temp);
  char out[] = {
    (char) ((temp & 0XFF000000) >> 24) ,
    (char) ((temp & 0X00FF0000) >> 16),
    (char) ((temp & 0X0000FF00) >> 8),
    (char) (temp & 0X000000FF)
    };
  Udp.write(out , 4);
  Udp.endPacket();
  Serial.println(out[0], HEX);
  Serial.println(out[1], HEX);
  Serial.println(out[2], HEX);
  Serial.println(out[3], HEX);

lastConnectionTime = millis();
  /*if (client.connect(server, 80)) {
    Serial.println("connecting...");
    // send the HTTP GET request:
    client.print("POST /temp/");
    client.print(sensors.getTempCByIndex(0));
    client.println("HTTP/1.1");
    client.print("Host: ");
    client.print(host);
    client.println("User-Agent: BOT");
    client.println("Connection: close");

    client.println();
    client.println();

    lastConnectionTime = millis();
  } else {
    Serial.println("connection failed");
  }*/
}