[NPAVR Board] AVR - Atmega128 (Character LCD)

/*
 * GccApplication1.cpp
 *
 * Created: 2018-09-04 오전 11:21:22
 * Author : USER
 */ 
 
#include <avr/io.h>
#define F_CPU 16000000
#include <util/delay.h>
#include "lcd.h"
 
#define LED_SEL1 (*(volatile unsigned char *)0xA000)
#define LED_SEL2 (*(volatile unsigned char *)0xB000)
#define FND (*(volatile unsigned char *)0x8000)
 
void io_init(void)
{
    MCUCR|=(1<<SRE) | (1<<SRW10);
    XMCRA=(1<<SRL2) | (0<<SRL1) | (0<<SRL0) | (1<<SRW01) | (1<<SRW00) | (1<<SRW11);
    XMCRB |= 0x00;
}
 
void fndController (char loc , char number){
    FND = (number <<3)|loc;
}
void fndDisplay (unsigned long long number){
    fndController(5,number%10);_delay_ms(1);
    fndController(4,(number%100)/10);_delay_ms(1);
    fndController(3,(number%1000)/100);_delay_ms(1);
    fndController(2,(number%10000)/1000);_delay_ms(1);
    fndController(1,(number%100000)/10000);_delay_ms(1);
    fndController(0,number/100000);_delay_ms(1);
    
}
 
 
int main(void)
{
    io_init();
    lcd_init();
    lcd_clear();
    
    int flag = 0;
    while (1) 
    {    
        if (flag == 0){
            for (int i = 0;i<16;i++){
            lcd_putsf(0,0,"             ");
            lcd_putsf(i,0,"A");
            _delay_ms(100);
            
                if (i==15){flag =1; lcd_putsf(15,0,"   ");
                }
            }
        }
            
        else if (flag == 1){
            for (int i = 15; i>=0;i--){
                lcd_putsf(0,1,"                     ");
                lcd_putsf(i,1,"A");    
                _delay_ms(100);
                if (i==0){flag=0;lcd_putsf(0,1,"   ");}
            }
        }
    }
}
 
 

lcd.h