#include <SPI.h>
#include <Ethernet.h>
#include <Udp.h>
#include <LiquidCrystal.h>
#include <EthernetUdp.h>



// Communications
EthernetUDP Udp; // To send & receive packets using UDP


/**********************************************************
CETS bir grup mac adresine statik IP atadı.
Bu mac adreslerini kullanarak DHCP kullanırsanız,
Statik IP atanır. Aksi takdirde,
Kendi mac add ve IP adresini bir cihaza yüklemek zorunda kalırsa
Airpenn net'in güvenlik sayfasına gidin.
Bu mac ve statik adresler,
Mühendislik binası.
***********************************************************/

// Replace "**" in the mac and ip array with assigned digits
byte mac[] = { 0x2A, 0x00, 0x01, 0x01, 0x01, 0x01 };
byte ip[]  = {192, 168, 1, 51};

// -------- Do not change the section below -----------------
const unsigned int localPort = 1369;  // Process ID port
char recvdBuffer[UDP_TX_PACKET_MAX_SIZE+1]; // Buffer for incoming data
byte remoteIp[4];         // Holds source IP address from incoming data
unsigned int remotePort;  // Holds source port # from incoming data
LiquidCrystal lcd(8, 6, 7, 5, 3, 4); // Set up LCD screen on open pins
      // ------------------------------------------------------------

// Pin for the buzzer. Pin 9 is the easiest available pin.
const int buzzerPin = 9;

// Sets the threshold temperature in Fahrenheit for the buzzer
int alarmThreshold = 85;


void setup()
{
    lcd.begin(16, 2);        // Set up LCD, only done once in beginning
    Ethernet.begin(mac,ip);    // Set up the Ethernet Shield
    Udp.begin(localPort);      // Open a socket for this port
    Serial.begin(9600);        // Set up serial monitor with PC
    pinMode(buzzerPin, OUTPUT);   // Set buzzer pin to output


      /**********************************************************
      The following code will print a test on the LCD.  It will
      print out "Hi" on the first line, move to the second line,
      and then print "there" so the screen reads "Hi there."  See
      how it is done below to use for displaying temperature later.
      ***********************************************************/

    lcd.clear();         // Always clear the lcd before writing a frame
    lcd.print("Hi");     // Print "Hi" for testing
    lcd.setCursor(0, 1); // Move cursor to beginning of next line
    lcd.print("there");  // Print "there" for testing


    // Delay to see text on screen before it's cleared and overwritten
    delay(500);
}

void loop()
{
    int recvdSize = Udp.available();
    if(recvdSize) {
        Udp.readPacket(recvdBuffer,UDP_TX_PACKET_MAX_SIZE, remoteIp,
         remotePort);

        recvdBuffer[recvdSize] = '\0';
        recvdSize -= 8;               // Gets rid of the message header
        Serial.println(recvdBuffer);  // Prints received data to serial


        /*******************************************************
        Print out the temperature and alarmThreshold on the lcd
        screen. Hint: Refer to setup() above to see LCD writing
        commands.  The temperature value is stored in the variable
	  called temperature.
        *******************************************************/
        int temperature = atoi(recvdBuffer);




        /*******************************************************
        Activate buzzer alarm when temperature threshold is
        exceeded using if else statements.
        *******************************************************/


    }
}