ds1302+lcd1602时钟.txt

用AVR编写的点阵显示屏

#include "AT89x51.h"
#include "string.h"
#include "intrins.h"
#include "DS1302.H"
#include "LCD1602.H"

unsigned char adj_time_flag; //0代表正常显示，1代表进入时间调整状态，相应位光标闪烁
unsigned char shanshuo_flag; //光标闪烁标志
unsigned char adj_time_section;
unsigned char add_OR_dec_flag; //直加减标志位，0表示加，1表示减
unsigned char time_count;
unsigned char read_rtc_code[7];
unsigned char read_rtc_address[7]={0x8d,0x89,0x87,0x8b,0x85,0x83,0x81};
/********1ms延时子程序***********/
delay_nms(unsigned int n)
{
 unsigned int i;
 unsigned char j;

 for(i=0;i<n;i++)
    for(j=0;j<120;j++)
	  ;     //空操作
}
void Read_RTC(void)    //读出DS1302里的相关信息，存放在read_rtd_code[]数组中
{
 unsigned char i,*p;
 p=read_rtc_address; 
 for(i=0;i<7;i++)
 {
  read_rtc_code[i]=R1302(*p);
  p++;
 }
}

//时间显示程序
void RTC_display(void)
{
     Read_RTC();
     LCD_write_char(0,0x02,(read_rtc_code[0]/16)); //年十位
     LCD_write_char(0,0x03,(read_rtc_code[0]%16)); //年个位
     LCD_write_char(0,0x05,(read_rtc_code[1]/16)); //月十位
     LCD_write_char(0,0x06,(read_rtc_code[1]%16)); //月个位
     LCD_write_char(0,0x08,(read_rtc_code[2]/16)); //日十位
     LCD_write_char(0,0x09,(read_rtc_code[2]%16)); //日个位

	 LCD_write_char(0,0x0f,(read_rtc_code[3]%16)); //星期

     LCD_write_char(1,0x05,(read_rtc_code[4]/16)); //时十位
     LCD_write_char(1,0x06,(read_rtc_code[4]%16)); //时个位
     LCD_write_char(1,0x08,(read_rtc_code[5]/16)); //分十位
     LCD_write_char(1,0x09,(read_rtc_code[5]%16)); //分个位
     LCD_write_char(1,0x0b,(read_rtc_code[6]/16)); //秒十位
     LCD_write_char(1,0x0c,(read_rtc_code[6]%16)); //秒个位
}



//时间调整显示程序
void adj_time_display(void)
{
 Read_RTC();
 switch(adj_time_section)
    {
     case 0x01:
       if(shanshuo_flag==1)
        lcd_displaystr(0,0x02,"  ");
	   else
         RTC_display();break; 
    
     case 0x02:
       if(shanshuo_flag==1)
        lcd_displaystr(0,0x05,"  ");
	   else
         RTC_display();	break;
      case 0x03:
        if(shanshuo_flag==1)
          lcd_displaystr(0,0x08,"  ");
	    else
          RTC_display();break;
      case 0x04:
        if(shanshuo_flag==1)
          lcd_displaystr(0,0x0f," ");
	    else
          RTC_display();break;
      case 0x05:
        if(shanshuo_flag==1)
         lcd_displaystr(1,0x05,"  ");
	    else
          RTC_display();break;
      case 0x06:
        if(shanshuo_flag==1)
          lcd_displaystr(1,0x08,"  ");
	    else
          RTC_display();break;
      case 0x07:
        if(shanshuo_flag==1)
          lcd_displaystr(1,0x0b,"  ");
	    else
          RTC_display();break;
         default:break;
         
         }
}

void system_initial(void)
{
 initial_lcd1602(); //初始化LCD1602
}
void main(void)
{
  TMOD=0X01;//使用定时器0，16位定时
  TH0=(65535-50000)/256;
  TL0=(65535-50000)%256;
  ET0=1;
  EA=1;
  system_initial();
  delay_nms(10);
  delay_nms(10);
  //Set1302(inittime);    //这个是时钟初始化时间,当时钟有掉电电池的时候,
  						  //这一函数只使用一次,也可以不用,就在按键上调整时间就可以了
  //输出显示 
  W1302(0x8e,0x80);//写保护，禁止写操作  
 
   {
  lcd_displaystr(0,0x00,"20");
  delay_nms(10);
  lcd_displaystr(0,0x04,"-");
  delay_nms(10);
  lcd_displaystr(0,0x07,"-");
  lcd_displaystr(0,0x0b,"Week:");
  lcd_displaystr(1,0x00,"Time ");
  lcd_displaystr(1,0x07,":");
  lcd_displaystr(1,0x0a,":");
   }
 while(1)
   {
    P0=0XFF;
	P1=0XFF;
    //按键扫描程序
     if(P2_0==0)
        {
          delay_nms(10);
          if(P2_0==0)
            {
			  TR0=1;
              adj_time_section++;   //光标移位
			  if(adj_time_section==8)
			   {adj_time_section=0;TR0=0;}
              while(P2_0==0);
            }
        }
     if(P2_1==0)  //加按键
        {
          delay_nms(10);
          if(P2_1==0)
            {
              add_OR_dec_flag=0;
              Set(adj_time_section,add_OR_dec_flag);//调用时间调整子程序，此程序在DS1302.H文件中
              while(P2_1==0);
            }
        }
     if(P2_2==0)
        {
          delay_nms(10);
          if(P2_2==0)
            {
			  
			  add_OR_dec_flag=1;
              Set(adj_time_section,add_OR_dec_flag);//调用时间调整子程序,此程序在DS1302.H文件中
              while(P2_2==0);
            }
        }

	 if(P2_3==0)           //调整完毕，按下本按键SW4，闪烁停止
        {
          delay_nms(10);
          if(P2_3==0)
            {
			  adj_time_section=0;
              while(P2_3==0);
            }
        }

    
    if(adj_time_section==0)//正常时间显示
	   RTC_display();	
	else                  //时间调整时候时间显示
	  adj_time_display();
    
    P0=0XFF;
	P1=0XFF; 
   }
  
}

void t0_ovf(void) interrupt 1   //中断主要是位在时间调整的时候，调整相应位会闪烁
{
  TH0=(65535-50000)/256;
  TL0=(65535-50000)%256;
  time_count++;
  if(time_count==10)
     shanshuo_flag=1;
  if(time_count==20)
    {time_count=0;shanshuo_flag=0;}
 
}