#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code s8[18]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10,0x88,0x89,0xbf,0xfe,0xf7,0xc7,0xbe,0xb7};
//共阳极数码管0-9，A,H,-,-(再上一格),_，灭,,,的字段码
uchar dssjs[20]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
uchar dssjf[20]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
//存储定时时间
uchar time[2]={12,00}; //存储分，小时
uchar w6[6]={0x01,0x02,0x04,0x08,0x10,0x20};
//位选择码
uchar k;
uchar shu[6]={0x00,0x00,0x00,0x00,0x00,0x00};//储存数码管要显示的数据
/*DS1302引脚定义*/
sbit SCL = P3^0;
sbit IO = P3^1;
sbit CE = P3^2;/*74hc595引脚定义*/
sbit ds = P1^0;
sbit rck = P1^2;
sbit sck = P1^1;void Delay(uint n)
{while(n--);
}/************************************************
*名称：DS1302_Sendchar()
*描述：向DS1302写字节
*变量：dat
************************************************/
void DS1302_Sendchar(uchar dat)
{uchar i;for(i=0;i<8;i++){SCL = 0;IO = (bit)(dat & 0x01);dat >>= 1;SCL = 1;}
}/************************************************
*名称：DS1302_Rendchar2()
*描述：从ds1302读取字节
*变量：dat
************************************************/
uchar DS1302_Readchar()
{uchar dat,i;for(i=0;i<8;i++){if(IO == 1){dat = dat|0x80;}SCL = 1;dat >>= 1;SCL = 0;}IO = 0;//将读1个字节函数最后加上I/O=0即可消除85显示return dat;
}/************************************************
*名称：DS1302_WriteADD()
*描述：向1302寄存器写数据
*变量：com，dat
************************************************/
void DS1302_WriteADD(uchar com,uchar dat)
{CE = 0;SCL = 0;CE = 1;DS1302_Sendchar(com);DS1302_Sendchar(dat);SCL = 1;CE = 0;
}/************************************************
*名称：DS1302_ReadADD()
*描述：从1302指定寄存器内读数据
*变量：com
************************************************/
uchar DS1302_ReadADD(uchar com)
{uchar dat;CE = 0;SCL = 0;CE = 1;DS1302_Sendchar(com);dat = DS1302_Readchar();SCL = 1;CE = 0;return dat;
}/************************************************
*名称：DS1302_Init()
*描述：初始化DS1302
*变量：无
************************************************/
void DS1302_Init()
{
//  uchar flag;
//  flag = DS1302_ReadADD(0x81);
//  if(flag & 0x80)
//  {DS1302_WriteADD(0x8e,0x00);DS1302_WriteADD(0x80,((21/10)<<4|(21%10)));DS1302_WriteADD(0x82,((12/10)<<4|(12%10)));DS1302_WriteADD(0x84,((13/10)<<4|(13%10)));DS1302_WriteADD(0x86,((14/10)<<4|(14%10)));DS1302_WriteADD(0x88,((1/10)<<4|(1%10)));DS1302_WriteADD(0x8c,((1/10)<<4|(1%10)));              DS1302_WriteADD(0x8e,0x80);
//  }
}/************************************************
*名称：set595()
*描述：595向数码管发送数据
*变量：dat
************************************************/
void set595(uchar dat)
{uchar i;rck=0;for(i=0;i<8;i++){if(dat & 0x80){ds=1;}else{ds=0;}sck=1;dat<<=1;sck = 0;}rck = 1;
}/************************************************
*名称：main()
*描述：主函数
************************************************/
void main()
{uchar ReadValue;   //储存从1302读取的数据DS1302_Init();     //将1302初始化TMOD=0x01;TH0=64536/256;TL0=64536%256;ET0=1;TR0 = 1;EA=1;while(1){ReadValue = DS1302_ReadADD(0x81);  //从分寄存器读time[0]=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); //将读出数据转化ReadValue = DS1302_ReadADD(0x85);  //从时寄存器读time[1]=((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F); //将读出数据转化shu[0]=s8[15];shu[1]=s8[15];shu[2]=s8[(time[1]/10)];shu[3]=s8[(time[1]%10)];shu[4]=s8[(time[0]/10)];shu[5]=s8[(time[0]%10)];}
}
void timer0() interrupt 1//刷新数码管显示
{TH0=64536/256;TL0=64536%256;set595(0xff);set595(0x00);set595(shu[k]);set595(w6[k]);k++;if(k==6) k=0;
}