diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..ab2af8e
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,21 @@
+#makefile for serial project
+#DE TTK - Villamosmérnök BSC - Baranyai Dávid
+
+#Compiler:
+CC = gcc
+
+#Compiler flags:
+CFLAGS = -lcurl
+TARGET = serial_zigbee
+SERIALHANDLER = serialhandler
+
+all: $(TARGET) $(SERIALHANDLER)
+
+$(SERIALHANDLER): $(SERIALHANDLER).c $(SERIALHANDLER).h
+	$(CC) -c $(SERIALHANDLER).c -o $(SERIALHANDLER).o
+
+$(TARGET): $(TARGET).c $(SERIALHANDLER)
+	$(CC) -o $(TARGET) $(TARGET).c $(CFLAGS) $(SERIALHANDLER).o
+
+clean:
+	$(RM) $(TARGET)
\ No newline at end of file
diff --git a/serial_zigbee.c b/serial_zigbee.c
new file mode 100644
index 0000000..303ec44
--- /dev/null
+++ b/serial_zigbee.c
@@ -0,0 +1,161 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <pthread.h>
+#include <signal.h>
+#include <math.h>
+#include <time.h>
+#include <unistd.h>
+#include <curl/curl.h>
+#include "serialhandler.h"
+
+#define ADDRESS "http://127.0.0.1:3000"
+#define packet_size 28
+
+char *jsonString =
+"{\n\
+\t\"sensorid\": %d\n\
+}";
+
+void sigintHandler(int sig_num)
+{
+	signal(SIGINT, sigintHandler);
+    curl_global_cleanup();
+	exit(1);
+}
+
+int send_curl_data(char *message)
+{
+
+    CURL *curl = curl_easy_init();
+    if(curl) 
+    {
+        CURLcode res;
+
+        struct curl_slist *headers = NULL;
+        curl_slist_append(headers, "Accept: application/json");
+        curl_slist_append(headers, "Content-Type: application/json");
+        curl_slist_append(headers, "charset: utf-8");
+
+        curl_easy_setopt(curl, CURLOPT_URL, ADDRESS);
+        //curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
+        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+        curl_easy_setopt(curl, CURLOPT_POST, 1L);
+        curl_easy_setopt(curl, CURLOPT_COPYPOSTFIELDS, message);
+        curl_easy_setopt(curl, CURLOPT_USERAGENT, "libcrp/0.1");
+        /* Set the expected POST size. */
+        //curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, strlen(jsonObj));
+
+        res = curl_easy_perform(curl);
+        printf("Curl returned with code %d\n", res);
+        if(res != CURLE_OK)
+            fprintf(stderr, "curl_easy_perform() failed: %s\n",
+                    curl_easy_strerror(res));        
+    
+        /* always cleanup */
+        curl_easy_cleanup(curl);
+    }
+}
+
+int read_packet(uint16_t size, uint8_t buff[], const int fd)
+{
+	uint16_t i;
+	
+	//find start
+	do{  //olvasás amíg nem a start header(0xFB55)  első bájtja 
+	     //(0x55 a litle endian miatt(kisebb hejiértékü bájt érkezik hamarabb)) 
+
+	while(! (serialDataAvail(fd) > 0))  //vár amíg nincs adat
+	{
+	  usleep(200);
+	}
+	
+	buff[0] = serialGetchar (fd);
+      }while(buff[0] != 0x55);            //ha start header eleje akkro tovább
+
+	  
+     while(! (serialDataAvail(fd) > 0))  //vár amíg nincs adat
+	{
+	  //thread sleep? kelhet
+	}
+     buff[1] = serialGetchar (fd);
+     if(buff[1] != 0xFB)                //nem start header return error
+	return -1;
+	
+
+	//ha igen akkor beolvassa a maradék 22 bájtot
+     while(! (serialDataAvail(fd) >= (size-2)))  //vár amíg nincs adat
+	{
+	   usleep(1);
+	}
+
+     if(serialGetarray(fd, &buff[2], (size-2)) == -1)  //beolvas 22 bájtott a bufferbe a header utánra
+	 {
+	return -1;  //uart hiba
+	}
+	
+	if(buff[size-2] != 0xAA | buff[size-1] != 0xFE) //ha az end header nem passzol error
+	    return -1;
+
+	//todo crc check
+
+	return 1;  //adat beolvasva		
+}
+
+int main(int argc, char** argv)
+{
+    signal(SIGINT, sigintHandler);
+    uint8_t raw_buff[packet_size + 10];  //packet_size + egy kis tartalék, ha nincs hiba sehol akkor nem kell
+    curl_global_init(CURL_GLOBAL_ALL);
+    char *device = "/dev/ttyACM0";
+    int c, index;
+    while((c = getopt(argc, argv, "d:")) != -1)
+    {
+        switch (c)
+        {
+        case 'd':
+            device = (char*)malloc(sizeof(optarg));
+            strcpy(device, optarg);
+            break;
+        default:
+            abort();
+        }
+    }
+    for (index = optind; index < argc; index++) printf ("Non-option argument %s\n", argv[index]);
+
+    int fd = 0;
+    int connect_retry_count = 0;
+    
+    do
+	{
+        break;
+		if (connect_retry_count == 0) //if not the first time
+        {
+            printf("Cannot open %s. Trying again... (%d)\n", device, connect_retry_count);
+            sleep(1000);
+        }
+		fd=serialOpen(device, 115200);
+        connect_retry_count++;
+	} while (fd < 0);
+    int stringSize = strlen(jsonString) + 200;
+    char* jsonObj = (char*)malloc(stringSize); //"{ \"name\" : \"Pedro\" , \"age\" : \"22\" }";
+    snprintf(jsonObj, stringSize, jsonString, 15);
+
+    while (1)
+    {
+        if (1)//if(read_packet(packet_size, &raw_buff[0], fd) != -1)
+		{
+            printf("Sending: %s\n", jsonObj);
+            send_curl_data(jsonObj);
+            sleep(3);
+        }
+    }
+}
\ No newline at end of file
diff --git a/serialhandler.c b/serialhandler.c
new file mode 100644
index 0000000..bbbc8df
--- /dev/null
+++ b/serialhandler.c
@@ -0,0 +1,192 @@
+#include "serialhandler.h"
+
+/*
+ * serialOpen:
+ *	Open and initialise the serial port, setting all the right
+ *	port parameters - or as many as are required - hopefully!
+ *********************************************************************************
+ */
+int serialOpen (const char *device, const int baud)
+{
+  struct termios options ;
+  speed_t myBaud ;
+  int     status, fd ;
+
+  switch (baud)
+  {
+    case     50:	myBaud =     B50 ; break ;
+    case     75:	myBaud =     B75 ; break ;
+    case    110:	myBaud =    B110 ; break ;
+    case    134:	myBaud =    B134 ; break ;
+    case    150:	myBaud =    B150 ; break ;
+    case    200:	myBaud =    B200 ; break ;
+    case    300:	myBaud =    B300 ; break ;
+    case    600:	myBaud =    B600 ; break ;
+    case   1200:	myBaud =   B1200 ; break ;
+    case   1800:	myBaud =   B1800 ; break ;
+    case   2400:	myBaud =   B2400 ; break ;
+    case   4800:	myBaud =   B4800 ; break ;
+    case   9600:	myBaud =   B9600 ; break ;
+    case  19200:	myBaud =  B19200 ; break ;
+    case  38400:	myBaud =  B38400 ; break ;
+    case  57600:	myBaud =  B57600 ; break ;
+    case 115200:	myBaud = B115200 ; break ;
+    case 230400:	myBaud = B230400 ; break ;
+    case 460800:	myBaud = B460800 ; break ;
+
+    default:
+      return -2 ;
+  }
+
+  if ((fd = open (device, O_RDWR | O_NOCTTY | O_NDELAY | O_NONBLOCK)) == -1)
+    return -1 ;
+
+  fcntl (fd, F_SETFL, O_RDWR) ;
+
+// Get and modify current options:
+
+  tcgetattr (fd, &options) ;
+
+    cfmakeraw   (&options) ;
+    cfsetispeed (&options, myBaud) ;
+    cfsetospeed (&options, myBaud) ;
+
+    options.c_cflag |= (CLOCAL | CREAD) ;
+    options.c_cflag &= ~PARENB ;
+    options.c_cflag &= ~CSTOPB ;
+    options.c_cflag &= ~CSIZE ;
+    options.c_cflag |= CS8 ;
+    options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG) ;
+    options.c_oflag &= ~OPOST ;
+
+    options.c_cc [VMIN]  =   0 ;
+    options.c_cc [VTIME] = 100 ;	// Ten seconds (100 deciseconds)
+
+  tcsetattr (fd, TCSANOW | TCSAFLUSH, &options) ;
+
+  ioctl (fd, TIOCMGET, &status);
+
+  status |= TIOCM_DTR ;
+  status |= TIOCM_RTS ;
+
+  ioctl (fd, TIOCMSET, &status);
+
+  usleep (10000) ;	// 10mS
+
+  return fd ;
+}
+
+/*
+ * serialFlush:
+ *	Flush the serial buffers (both tx & rx)
+ *********************************************************************************
+ */
+
+void serialFlush (const int fd)
+{
+  tcflush (fd, TCIOFLUSH) ;
+}
+
+/*
+ * serialClose:
+ *	Release the serial port
+ *********************************************************************************
+ */
+
+void serialClose (const int fd)
+{
+  close (fd) ;
+}
+
+/*
+ * serialPutchar:
+ *	Send a single character to the serial port
+ *********************************************************************************
+ */
+
+void serialPutchar (const int fd, const unsigned char c)
+{
+  write (fd, &c, 1) ;
+}
+
+/*
+ * serialPuts:
+ *	Send a string to the serial port
+ *********************************************************************************
+ */
+
+void serialPuts (const int fd, const char *s)
+{
+  write (fd, s, strlen (s)) ;
+}
+
+/*
+ * serialPrintf:
+ *	Printf over Serial
+ *********************************************************************************
+ */
+
+void serialPrintf (const int fd, const char *message, ...)
+{
+  va_list argp ;
+  char buffer [1024] ;
+
+  va_start (argp, message) ;
+    vsnprintf (buffer, 1023, message, argp) ;
+  va_end (argp) ;
+
+  serialPuts (fd, buffer) ;
+}
+
+
+/*
+ * serialDataAvail:
+ *	Return the number of bytes of data avalable to be read in the serial port
+ *********************************************************************************
+ */
+
+int serialDataAvail (const int fd)
+{
+  int result ;
+
+  if (ioctl (fd, FIONREAD, &result) == -1)
+    return -1 ;
+
+  return result ;
+}
+
+
+/*
+ * serialGetchar:
+ *	Get a single character from the serial device.
+ *	Note: Zero is a valid character and this function will time-out after
+ *	10 seconds.
+ *********************************************************************************
+ */
+
+int serialGetchar (const int fd)
+{
+  uint8_t x ;
+
+  if (read (fd, &x, 1) != 1)
+    return -1 ;
+
+  return ((int)x) & 0xFF ;
+}
+
+int serialGetarray(const int fd, uint8_t out[], unsigned int size)
+{
+	int i;
+	uint8_t x;
+   if((out == 0) | (fd == 0)) return -1;
+   if(size == 0) return -1;	
+	
+	for(i=0;i<size;i++)
+	{
+		
+		if(read (fd, &out[i], 1) != 1)
+		return -1;
+	}
+
+return 0;  //nincs hiba
+}
\ No newline at end of file
diff --git a/serialhandler.h b/serialhandler.h
new file mode 100644
index 0000000..27a64e4
--- /dev/null
+++ b/serialhandler.h
@@ -0,0 +1,85 @@
+#ifndef SerialHandler_h
+#define SerialHandler_h
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <string.h>
+#include <termios.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+/*
+ * serialOpen:
+ *	Open and initialise the serial port, setting all the right
+ *	port parameters - or as many as are required - hopefully!
+ *********************************************************************************
+ */
+int serialOpen (const char *device, const int baud);
+
+/*
+ * serialFlush:
+ *	Flush the serial buffers (both tx & rx)
+ *********************************************************************************
+ */
+
+void serialFlush (const int fd);
+
+/*
+ * serialClose:
+ *	Release the serial port
+ *********************************************************************************
+ */
+
+void serialClose (const int fd);
+
+/*
+ * serialPutchar:
+ *	Send a single character to the serial port
+ *********************************************************************************
+ */
+
+void serialPutchar (const int fd, const unsigned char c);
+
+/*
+ * serialPuts:
+ *	Send a string to the serial port
+ *********************************************************************************
+ */
+
+void serialPuts (const int fd, const char *s);
+
+/*
+ * serialPrintf:
+ *	Printf over Serial
+ *********************************************************************************
+ */
+
+void serialPrintf (const int fd, const char *message, ...);
+
+
+/*
+ * serialDataAvail:
+ *	Return the number of bytes of data avalable to be read in the serial port
+ *********************************************************************************
+ */
+
+int serialDataAvail (const int fd);
+
+
+/*
+ * serialGetchar:
+ *	Get a single character from the serial device.
+ *	Note: Zero is a valid character and this function will time-out after
+ *	10 seconds.
+ *********************************************************************************
+ */
+
+int serialGetchar (const int fd);
+
+int serialGetarray(const int fd, uint8_t out[], unsigned int size);
+
+
+#endif
\ No newline at end of file