led时钟.c

DS1302的时钟程序,可以实现星期,时间,分钟,秒的显示

#include <REGX51.H>
#include "ds1302.h"     ;调用DS1302的头文件
#define leddata P0
#define sec 0x80
#define min 0x82
#define hou 0x84
#define read 0x01
sbit MODE=P3^4;
sbit SET=P3^5           ;调时
sbit UP=P3^6;
sbit DOWN=P3^7;
sbit led0=P2^0;
sbit led1=P2^3;
sbit led2=P2^7;
sbit led3=P2^4;
sbit led4=P2^6;
sbit led5=P2^5;
void delays(unsigned char);
void display(void);
void Scan_Key(void);
void id_case1_key();
void Set_id(unsigned char ,unsigned char);
unsigned char hour,minute,second,id=0,timecount,re_disp=0;
bit flag;
unsigned char code tab[]={0x48,0xEE,0x54,0xC4,0xE2,0xC1,0x41,0xEC,0x40,0xC0,0x60};
unsigned char inittime[7]={0x00,0x00,0x12,0x16,0x11,0x06,0x04};
//                          秒  分钟 小时  日   月   年  星期



;///////////////////////////时钟中断程序///////////////
void t0(void) interrupt 1 using 0
{
  	TH0=(65535-50000)/256; //50ms定时
  	TL0=(65535-50000)%256;  
  	timecount++;re_disp++;
  	if(timecount>9)
   		{
			timecount=0;
    		flag=~flag;
   		}
	if(re_disp>200){re_disp=0;if(id)id=0;}
}
;///////////////////////延时程序//////////////////////
void delays(unsigned char k)
{
	unsigned char i,j;
	for(i=0;i<k;i++)
		for(j=0;j<50;j++);
}
;//////////////////////////显示程序///////////////////
void display(void)
{
	if(flag&hour)
		{
			led0=0;leddata=0xff;delays(10);led0=1;
			led1=0;leddata=0xff&~((unsigned char)~flag<<6);delays(10);led1=1;
		}
	else
		{
			leddata=tab[Read1302(hou+1)/16];led0=0;delays(10);led0=1;
			leddata=tab[Read1302(hou+1)%16]&~((unsigned char)~flag<<6);led1=0;delays(10);led1=1;
		}
	if(flag&minute)
		{
			led2=0;leddata=0xff&~((unsigned char)~flag<<6);delays(10);led2=1;
			led3=0;leddata=0xff&~((unsigned char)~flag<<6);delays(10);led3=1;
		}
	else
		{
			leddata=tab[Read1302(min+1)/16]&~((unsigned char)~flag<<6);led2=0;delays(10);led2=1;
			leddata=tab[Read1302(min+1)%16]&~((unsigned char)~flag<<6);led3=0;delays(10);led3=1;
		}
	if(flag&second)
		{
			led4=0;leddata=0xff&~((unsigned char)~flag<<6);delays(10);led4=1;
			led5=0;leddata=0xff;delays(10);led5=1;
		}
	else
		{
			leddata=tab[Read1302(sec+1)/16]&~((unsigned char)~flag<<6);led4=0;delays(10);led4=1;
			leddata=tab[Read1302(sec+1)%16];led5=0;delays(10);led5=1;
		}
}
;//////////////////////键盘扫描程序////////////////////////
void Scan_Key(void)                         
{
	display();
	if(!SET)                ;当P3.5为0时，执行下面程序
		{
			while(!SET)display();
			re_disp=0;
			id++;if(id>3)id=0;
		}
	if(id==0){hour=0;minute=0;second=0;}
	if(id==1){hour=1;id_case1_key();}
	if(id==2){hour=0;minute=1;id_case1_key();}
	if(id==3){minute=0;second=1;id_case1_key();}
}
void id_case1_key(void)
{
	display();
  	if (!DOWN) //减少
      	{
       		while(!DOWN)display();
			re_disp=0;
	   		Set_id(id,0);    
      	}
   	if (!UP)  //增加
      	{
       		while(!UP)display();
			re_disp=0;
	   		Set_id(id,1);    
      	}
}

//根据选择调整相应项目并写入DS1302
void Set_id(unsigned char sel,unsigned char sel_1) 
{
  	signed char max,mini,address,item;
	if(sel==1)  {address=hou; max=23;mini=0;}    //小时
	if(sel==2)  {address=min; max=59;mini=0;}    //分钟
  	if(sel==3)  {address=sec; max=0;mini=0;}     //秒
  	item=Read1302(address+1)/16*10+Read1302(address+1)%16;
  	if (sel_1==0) item--;  else item++;
 	if(item>max) item=mini;   
  	if(item<mini) item=max;
	Write1302(0x8e,0x00);//允许写操作
  	Write1302(address,item/10*16+item%10);
  	Write1302(0x8e,0x80);//写保护，禁止写操作  
}
;////////////////////////////主程序开始////////////////////////
void main()
	{  
		TMOD=0x01         ;T0,方式1
  		TH0=(65535-50000)/256;
  		TL0=(65535-50000)%256;
  		EA=1;
  		ET0=1;
		TR0=1; 
		Write1302(0x90,0xa5);//打开充电二级管  一个二级管串联一个2K电阻 
 		Write1302(0x8e,0x80);//写保护，禁止写操作 
		if(!UP&!DOWN)Set1302(inittime);
		while(1)
			{  
				Scan_Key();
				//display();
			}
}