就是原程序设置年月日和时间时候选中的时候不会闪烁  所以请高手帮忙增加。课程是SOPC用的是DE2实验板 
#include "alt_types.h"
#include <stdio.h>
#include <unistd.h>
#include <io.h>
#include "system.h"
#include "altera_avalon_pio_regs.h"
#include "sys/alt_irq.h"
#include "LCD.h"
#include "sys/alt_alarm.h"

    int year,month,day,hour,min,sec;
    int year4,year3,year2,year1,month2,month1,day2,day1,hour2,hour1,min2,min1,sec2,sec1;
    int row;       //row计数key[1]按下的次数
    char line1[16];
    char line2[16];
    int led,led7;
 // char line1=(year<<24)|(" "<<20)|(month<<12)|(" "<<8)|day;
 // char line2=(hour<<6)|(":"<<5)|(min<<3)|(":"<<3)|sec;



static alt_alarm alarm1;

volatile int edge_capture=0;
 void  int_time();
 void  lcd_show();
 void  int_key();
 void  data_init();
 void  led_data_init();
 void  initpio();
 void  int_key0();
 void  int_key1();
 void  int_key2();
 void  int_key3();
 void  int_day();

//主函数------------------------------------------------------------


int main()                 
{  
    data_init();
    LCD_Init();
    int_time();
    initpio();
    while(1)
    { 
     int_key();
     lcd_show();
    }                      
}

//pio的初始化--------------------------------------------------------



void key_interrupts(void* context,alt_u32 id)
{
    volatile int* edge_capture_ptr = (volatile int*)context;
    *edge_capture_ptr= IORD_ALTERA_AVALON_PIO_EDGE_CAP(KEY_PIO_BASE);
    
    IOWR_ALTERA_AVALON_PIO_EDGE_CAP(KEY_PIO_BASE,0);
    
}
void initpio()
{
    void* edge_capture_ptr = (void*)&edge_capture;
    
    IOWR_ALTERA_AVALON_PIO_DIRECTION(LED_PIO_BASE,0x00);
    IOWR_ALTERA_AVALON_PIO_DIRECTION(KEY_PIO_BASE,0x00);
    
    IOWR_ALTERA_AVALON_PIO_IRQ_MASK(KEY_PIO_BASE,0xff);
    
    IOWR_ALTERA_AVALON_PIO_EDGE_CAP(KEY_PIO_BASE,0x00);
    
    alt_irq_register(KEY_PIO_IRQ,edge_capture_ptr,key_interrupts);
}



//计数---------------------------------------------------------



alt_u32 my_alarm_callback(void *context)     
{
    
      if(sec<59)
         sec++;
         else 
        {
         sec=0;
         
              if(min<59)
                 min++;
                 else
                { 
                 min=0;
       
                      if(hour<23)
                         hour++;
                         else 
                        { 
                         hour=0;
                         int_day();
                               //if(day<30)
                                 // day++;
                                 // else
                                 {   
                                  //day=1;

                                       if(month<12)
                                          month++;
                                          else 
                                         { 
                                          month=1;
                                                 
                                                 if(year<9999)
                                                    year++;
                                         }
                                  }
                        }
                }
        }
              

      return alt_ticks_per_second();
}

void int_time()         //定时1秒与时间的累加
{

    if(alt_alarm_start(&alarm1,alt_ticks_per_second(),my_alarm_callback,NULL)<0)
     {
       printf("No system clock available\n");
     }
   

}


//显示------------------------------------------------------------------


void lcd_show_line1()   //显示第一行
{
   LCD_Line1();
   LCD_Show_Text(line1);
}

void lcd_show_line2()    //显示第二行
{
   LCD_Line2();
   LCD_Show_Text(line2);
}



void lcd_show()                     //将数据转换为显示器件可以接收的格式
{
     year4=year/1000; 
     year3=(year-year4*1000)/100;
     year2=(year-year4*1000-year3*100)/10; 
     year1=year%10;
     month2=month/10;
     month1=month%10;
     day2=day/10;
     day1=day%10;

     hour2=hour/10;
     hour1=hour%10;
     min2=min/10;
     min1=min%10;
     sec2=sec/10;
     sec1=sec%10;

     line1[0]=year4+0x30;
     line1[1]=year3+0x30;
     line1[2]=year2+0x30;
     line1[3]=year1+0x30;
     line1[4]=' '; 
     line1[5]=' ';
     line1[6]=month2+0x30; 
     line1[7]=month1+0x30;
     line1[8]=' ';
     line1[9]=' ';
     line1[10]=day2+0x30;
     line1[11]=day1+0x30;
     line1[12]=' '; 
     line1[13]=' ';
     line1[14]=' ';
     line1[15]=' ';

     line2[0]=' ';
     line2[1]=' ';
     line2[2]=hour2+0x30;
     line2[3]=hour1+0x30;
     line2[4]=' ';
     line2[5]=' ';
     line2[6]=min2+0x30;
     line2[7]=min1+0x30;
     line2[8]=' ';
     line2[9]=' ';
     line2[10]=sec2+0x30;
     line2[11]=sec1+0x30;
     line2[12]=' ';
     line2[13]=' ';
     line2[14]=' ';
     line2[15]=' ';

     year=year4*1000+year3*100+year2*10+year1;
     month=month2*10+month1;
     day=day2*10+day1;
     hour=hour2*10+hour1;
     min=min2*10+min1;
     sec=sec2*10+sec1;

     lcd_show_line1();
     lcd_show_line2();
     
}

//按键判断----------------------------------------------------

void int_key()                
{
    
    
     switch(edge_capture)
      {
        case 0x00:break;
        case 0x01:
           int_key0();
           IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE,led);
           edge_capture=0;
           break;
        case 0x02:
           int_key1();
           IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE,led);
           edge_capture=0;
           break;
        case 0x04:
           int_key2();
           IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE,led);
           edge_capture=0;
           break;
        case 0x08:
           int_key3();
           IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE,led);
           edge_capture=0;
           break;
     }
    
}

void int_key0()         //处理按下key0 切换行 led[7]灭，表示当前为第一行，亮表示第二行
{    
     if(led7==0)      
        { 
          led7=1;
          led=0x80;
          LCD_Line2();
        }
     else
        { 
          led7=0;
          led=0x00;
          LCD_Line1();
        }
     row=0;
}

void int_key1()     //处理按下key1 切换列
{     
    if(row==3)      //row==3表示已经按下三次，当前执行第四次按下
       row=0;
     if(led7==0)
      {
        switch(row)
       {
             case 0:
               led=0x20;
               break;
             case 1:
               led=0x10;
               break;
             case 2:
               led=0x08;
               break;
       }
      }
     if(led7==1)
      {
        switch(row)
        {
            case 0:
              led=0x84;
              break;
            case 1:
              led=0x82;
              break;
            case 2:
              led=0x81;
              break;
        }
      }
     row++;
}

void int_key2()      //处理按下key2 数据加1
{
    switch(led)
    {
        case 0x20:
          if(year<9999)
          year++;
          else year=2010;
          break;
        case 0x10:
          if(month<12)
          month++;
          else month=1;
          break;
        case 0x08:
          int_day();
          break;
        case 0x84:
          if(hour<23)
          hour++;
          else hour=0;
          break;
        case 0x82:
          if(min<59)
          min++;
          else min=0;
          break;
        case 0x81:
          break;
    }
}

void int_key3()       //处理按下key3 数据初始化
{
    data_init();
}

void int_day()
{
    if((month==1)|(month==3)|(month==5)|(month==7)|(month==8)|(month==10)|(month==12))
    {   if(day<31)
           day++;
           else day=1;
    }
    else 
     { if(month==2)
       {
        if(day<28)
           day++;
           else day=1;
       }
       else 
       {
        if(day<30)
        day++;
        else day=1;
       }
     }
}     
//数据的初始化-----------------------------------------------


void data_init()
{  
      led=0x00;
      led7=0;

      year4=0;
      year3=0;
      year2=0;
      year1=0;
      month2=0;
      month1=0;
      day2=0;
      day1=0;
      hour2=0;
      hour1=0;
      min2=0;
      min1=0;
      sec2=0;
      sec1=0;

      row=0;
    //  stu=0;
   
      year=2010;
      month=07;
      day=07;
      hour=12;
      min=00;
      sec=00;
}