Porgram to read and write EEPROM (ATMEGA16) CodeVision (C-Code)

Porgram how to read  and write EEPROM (ATMEGA16) CodeVision (C-Code)

LCD AT PORT C
INITIAL VALUE %

PUSH BUTTON AT PORTB
ON PRESSING PORTB.1 VARIABLE WILL INCREASE
ON PRESSING PORTB.2 VARIABLE WILL DECREASE
ON RESET OR ON/OFF KIT U WILL GET UPDATED NUMBER

====================================================================


#include
#include
#include
// Alphanumeric LCD Module functions
#asm
   .equ __lcd_port=0x15 ;PORTC
#endasm
#include

//  global variables here

#pragma warn-
eeprom unsigned int a=5;
unsigned int eeprom *int_ptr_to_eeprom;
#pragma warn+
unsigned int b=1;
unsigned int  *int_ptr_to_ram;

unsigned char str_buffer[20];
void main(void)
{

// Declare your local variables here

// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTA=0x00;
DDRA=0xff;

// Port B initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTB=0xff;
DDRB=0x00;

// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0xff;

// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T
PORTD=0x00;
DDRD=0xff;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=FFh
// OC0 output: Disconnected
TCCR0=0x00;
TCNT0=0x00;
OCR0=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer2 Stopped
// Mode: Normal top=FFh
// OC2 output: Disconnected
ASSR=0x00;
TCCR2=0x00;
TCNT2=0x00;
OCR2=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// INT2: Off
MCUCR=0x00;
MCUCSR=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
SFIOR=0x00;


// copy the string e from EEPROM to
// the string r in RAM

int_ptr_to_eeprom=&a;
int_ptr_to_ram=&b;

*int_ptr_to_ram=*int_ptr_to_eeprom;     
     
lcd_init(20);
lcd_clear();
delay_ms(200);

while (1)
      {
        lcd_clear();
        lcd_puts(str_buffer);
        sprintf(str_buffer,"NUMBER-%u",b);
       
        if(PINB.1 == 0)
        {
                b++;
                *int_ptr_to_eeprom=*int_ptr_to_ram;
        }      
        if(PINB.2 == 0)
        {
                b--;
                *int_ptr_to_eeprom=*int_ptr_to_ram;
        }
           
        delay_ms(800);
      };
}