#define F_CPU 16000000UL  

#include <avr/io.h>  
#include <inttypes.h>  
#include "lcd_io.h"  
#include "util/delay.h"

void BlueInit(uint16_t ubrr_value)                    /*This function is used to initialize the USART at a given UBRR value  */
{  
  //Set Baud rate  
  UBRRL = ubrr_value;  
  UBRRH = (ubrr_value>>8);  
  /*We Set Frame Format as  
  >> Asynchronous mode  
  >> No Parity  
  >> 1 StopBit  
  >> char size 8  
  */ 
  UCSRC=(1<<URSEL)|(3<<UCSZ0);  
  //Enable The RX receiver and TX transmitter  
  UCSRB=(1<<RXEN)|(1<<TXEN);  
}  

char BlueRdChar()      /* function used to read data from USART line. It waits till any data is available  */
{  
  while(!(UCSRA & (1<<RXC)))  
  {  
  }  
  UCSRA |= (1 << RXC);
  
  //Return received data
  return UDR;  
}  

void BlueWrChar(char data)                /* function writes the character in 'data' into USART and then transmits it to PC via TX line  */
{  
  while(!(UCSRA & (1<<UDRE)))  
  {  
  }  
  UDR=data;  
}  
void Waiting(int j)             /* simple delay function  */
{  
     uint8_t i;  
     for(i=0;i<j;i++)  
     _delay_ms(200);  
}  


int main()  
{  
  char data;  
  int i;  
  /*First Initialize the USART with baud rate = 9600bps  
  for Baud rate = 9600bps  
  UBRR value = 103  
  */ 
  BlueInit(103);  //UBRR = 103  
  //Initialize LCD module  
   lcd_init();
    lcd_clrscr();
    lcd_gotoxy(0,0);   
    lcd_puts("BLUETOOTH MODULE:");
           
     Waiting(5);  
      lcd_clrscr(); 
  //Loop forever  
  while(1)  
  {  
  lcd_clrscr(); 
     lcd_puts("Receiving Data..");  
   for (i=0;i<=15;i++)  
   {  
           data=BlueRdChar();  
           BlueWrChar(data);  
          lcd_gotoxy(i,1);  
            lcd_puti(data,0);  
   }  
      Waiting(2);  
  }  
  return 0;  
}