基于NIOS II的液晶显示设计——时钟头文件

/////////////////////////////////////////////////////////////////////////////////////////////////

date.h

/////////////////////////////////////////////////////////////////////////////////////////////////

#ifndef DATE_H_
#define DATE_H_

#include "io.h"
#include "GUI.h"
#include "system.h"
#include "alt_types.h"
#include "sys/alt_irq.h"
#include "altera_avalon_pio_regs.h"      //包含基本的I/O口信息
#include "altera_avalon_timer_regs.h"    //定义内核寄存器的映射，提供对底层硬件的符号化访问

#define key  IORD_ALTERA_AVALON_PIO_DATA(KEY_BASE)
#define sw   IORD_ALTERA_AVALON_PIO_DATA(SWITCH_BASE)

#define SECOND  0
#define MIN     0
#define HOUR    12
#define DAY     1
#define MONTH   1
#define YEAR    2011
#define WEEKDAY 0
#define Date_Disp()        display()

void init_value(void);
void Timer_Init();
void Timer_ISR(void* context, alt_u32 id);
void display();
void KeyDown_ISR(void* context, alt_u32 id);
void KeyDown_Init();
void Date_Init(void);

#endif /*DATE_H_*/

///////////////////////////////////////////////////////////////////////////////////////////////

date.c

///////////////////////////////////////////////////////////////////////////////////////////////

#include"date.h"

alt_u8 second,min,hour,day,month,weekday;
alt_u16 year;

char *week[]={"SUN","MON","TUE","WED","THU","FRI","SAT"}; //星期

void init_value(void)
{
    second=SECOND;
    min=MIN;
    hour=HOUR;
    day=DAY;
    month=MONTH;
    year=YEAR;
    weekday=WEEKDAY;
}

//按键中断服务函数
 void KeyDown_ISR(void* context, alt_u32 id)
 {
    if(sw==0x01)
    {
         if(key == 0x0e) { second = 0;  while(key == 0x0e){display();} }                     //秒调设置
         if(key == 0x0d) { min++; if(min==60) min = 0;  while(key == 0x0d){display();} }     //分调设置
         if(key == 0x0b) { hour++; if(hour == 24) hour = 0;  while(key == 0x0b){display();} }//小时设置
    }
   
    else if(sw==0x02)
    {
        if(key == 0x0e) { weekday++; if(weekday == 7) weekday = 0;  while(key == 0x0e){display();} }//星期设置
        if(key == 0x0d)    //日期设置
         {
          day++;
          if(  ( month<=7 && month%2 ) || ( month>=8 && (!(month%2)) )  ) //大月31天
           {
                if(day==32)  day=1;
            }
          else       //小月30
           {
             if(month==2)  //2月 是28天还是29天
             {
                 if( (!(year%4) && year%100) || (!(year%400) ) )// 闰年 29天
                   { if(day==30)  day=1; }
                 else if(day==29) day=1;  //平年 28天
             }
             else if(day==31) day=1;
          }
         while(key == 0x0d) display();
       }
     if(key == 0x0b) { month++; if(month == 13) month = 1;  while(key == 0x0b){display();} }//月份设置
    }
    else if(sw==0x03)
    {
     if(key == 0x0e) { year--; if(year == 1900) year = 2010;  while(key == 0x0e){display();} }//年份设置，递减
     if(key == 0x0d) { year++; if(year == 2100) year = 2010;  while(key == 0x0d){display();} }//年份设置，递加
    }
     IOWR_ALTERA_AVALON_PIO_EDGE_CAP(KEY_BASE, 0x00);   //清中断捕获寄存器
}

//按键中断初始化
void KeyDown_Init()
{
    IOWR_ALTERA_AVALON_PIO_IRQ_MASK(KEY_BASE, 0x07);   //开KEY中断
    IOWR_ALTERA_AVALON_PIO_EDGE_CAP(KEY_BASE, 0x00);   //清中断捕获寄存器
   
    alt_irq_register(KEY_IRQ,0,KeyDown_ISR);           //注册中断函数
}

//定时器初始化
void Timer_Init()
{
    alt_irq_register(TIMER_IRQ,0,Timer_ISR);          //注册中断函数
    IOWR_ALTERA_AVALON_TIMER_STATUS(TIMER_BASE, 0);   //清状态标志
    IOWR_ALTERA_AVALON_TIMER_CONTROL(TIMER_BASE, 7);  //启动定时器允许中断，连续计数
}

//定时器中断服务函数
void Timer_ISR(void* context, alt_u32 id)
{
    second++;
    if(second == 60) { min++; second = 0;}
    if(min == 60) { hour++; min = 0;}
    if(hour == 24) { day++;weekday++;hour = 0;}
    if(weekday == 7) weekday = 0;
    if(  ( month<=7 && month%2 ) || ( month>=8 && (!(month%2)) )  )
    {
        if(day==32)
        {
            day=1;
            month++;
        }
    }
    else
    {
        if(month==2)
        {
            if( (!(year%4) && year%100) || (!(year%400) ) )
             {
                if(day==30)
                {
                     day=1;
                     month++;
                }
             }
            else if(day==29)
             {
                      day=1;
                      month++;               
             }
        }
        else if(day==31)
        {
            day=1;
            month++;
        }
    }
    if(month==13) { month = 1; year ++; }
    if(year==2100) year = 2010;
   
    IOWR_ALTERA_AVALON_TIMER_STATUS(TIMER_BASE, 0);    //清状态寄存器
}

//TFT LCD 显示函数
void display()
{
    GUI_DispDecAt(year,50,10,4);
    GUI_DispDecAt(month,90,10,2);
    GUI_DispDecAt(day,114,10,2);
   
    GUI_DispDecAt(hour,50,26,2);
    GUI_DispDecAt(min,74,26,2);
    GUI_DispDecAt(second,98,26,2);
    GUI_DispStringAt(" ",114,26);
    GUI_DispStringAt(week[weekday],122,26);
}

void Date_Init(void)
{  
  //  GUI_SetTextMode(2);    
    GUI_DispStringAt("Date:",10,10);
    GUI_DispStringAt("-",82,10);
    GUI_DispStringAt("-",106,10);
   
    GUI_DispStringAt("Time:",10,26);
    GUI_DispStringAt("-",66,26);
    GUI_DispStringAt("-",90,26);
 //   GUI_SetTextMode(0);
   
    KeyDown_Init(); //按键中断初始化
    Timer_Init();  //定时器初始化
    init_value();
}