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- #include<reg52.h>
- #define uint unsigned int
- #define uchar unsigned char
- //**************寄存器宏定義*******************************
- #define write_miao 0x80
- #define write_fen 0x82
- #define write_shi 0x84
- #define read_miao 0x81
- #define read_fen 0x83
- #define read_shi 0x85
- #define write_protect 0x8e
- //*********************************************************
- sbit ACC_7=ACC^7; //管腳定義
- sbit sclk=P3^5; //ds1302時(shí)鐘信號(hào)
- sbit dio=P3^6; //ds1302數(shù)據(jù)信號(hào)
- sbit ce=P3^7; //ds1302片選
- //*********************************************************
- sbit wei=P2^0;
- sbit duan=P2^1;
- sbit k1=P1^0;
- sbit k2=P1^1;
- uchar table[]={0x3f,0x06,0x5b,0x4f, //0,1,2,3
- 0x66,0x6d,0x7d,0x07, //4,5,6,7
- 0x7f,0x6f,0x40,0x00}; //8,9,-,空格
- uchar wela[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
- uchar num,num1,num2,shi,fen,miao,m,s;
- char guo0,guo1,guo2;
- /********************地址、數(shù)據(jù)發(fā)送子程序*******************/
- void write1302(uchar addr,dat)
- {
- uchar i,temp;
- ce=0; //ce引腳為低，數(shù)據(jù)傳送中止
- sclk=0; //清零時(shí)鐘總線
- ce=1; //ce引腳為高，邏輯控制有效
- //發(fā)送地址
- for(i=8;i>0;i--) //循環(huán)8次移位
- {
- sclk=0;
- temp=addr;
- dio=(bit)(temp&0x01);//每次傳輸?shù)妥止?jié)
- addr>>=1; //右移一位
- sclk=1;
- }
- //發(fā)送數(shù)據(jù)
- for(i=8;i>0;i++)
- {
- sclk=0;
- temp=dat;
- dio=(bit)(temp&0x01);
- dat>>=1;
- sclk=1;
- }
- ce=0;
- }
- /******************數(shù)據(jù)讀取子程序*******************/
- uchar read1302(uchar addr)
- {
- uchar i,temp,dat1; // dat2,
- ce=0;
- sclk=0;
- ce=1;
- //發(fā)送地址
- for(i=8;i>0;i--)
- {
- sclk=0;
- temp=addr;
- dio=(bit)(temp&0x01);//每次傳輸?shù)妥止?jié)
- addr>>=1;
- sclk=1;
- }
- //讀取數(shù)據(jù)
- for(i=8;i>0;i--)
- {
- ACC_7=dio;
- sclk=1;
- ACC>>=1;
- sclk=0;
- }
- ce=0;
- dat1=ACC;
- return(dat1);
- }
- /*****************初始化ds1302**********************/
- void initial()
- {
- TMOD=0x01;
- TH1=(65536-56074)/256; // 11.05768M.
- TL1=(65536-56074)%256;
- EA=1; // 打開(kāi)中斷允許
- ET1=1; // 開(kāi)起計(jì)數(shù)器0
- EX0=1;
- }
- void delay(uint z)
- {
- uint i,j;
- for(i=z;i>0;i--)
- for(j=110;j>0;j--);
- }
- void display(uchar duan_i,uchar wela_i)
- {
- duan=1;
- P0=table[duan_i];
- duan=0;
- wei=1;
- P0=wela[wela_i];
- wei=0;
- delay(1);
- P0=0;
- }
- void display_1()
- {
- display(shi/16,0);
- display(shi%16,1);
- display(10,2);
- display(fen/16,3);
- display(fen%16,4);
- display(10,5);
- display(miao/16,6);
- display(miao%16,7);
- }
- void display_2()
- {
- while(m==3&&num2%2!=0)
- {
- display(11,0);
- display(11,1);
- display(10,2);
- display(fen/16,3);
- display(fen%16,4);
- display(10,5);
- display(miao/16,6);
- display(miao%16,7);
- }
- while(m==1&&num2%2!=0)
- {
- display(shi/16,0);
- display(shi%16,1);
- display(10,2);
- display(fen/16,3);
- display(fen%16,4);
- display(10,5);
- display(11,6);
- display(11,7);
-
- }
- while(m==2&&num2%2!=0)
- {
- display(shi/16,0);
- display(shi%16,1);
- display(10,2);
- display(11,3);
- display(11,4);
- display(10,5);
- display(miao/16,6);
- display(miao%16,7);
- }
- while(num2%2==0)display_1();
- }
- char fun_1(uchar u)
- {
- u=u/16*10+u%16; //將十六進(jìn)制轉(zhuǎn)化為十進(jìn)制
- u++;
- s=0;
- u>=60?u=0:u;
- u=u/10*16+u%10; //將十進(jìn)制轉(zhuǎn)化為十六進(jìn)制BCD
- return u;
- }
- void keyboard()
- {
- if(k1==0)
- delay(5);
- if(k1==0)
- {
- if(TR1=1,m++,m==4)
- {
- m=0;
- TR1=0;
- }
- while(!k1)display_1();
- }
- if(m!=0)
- {
- if(k2==0)
- {
- if(delay(5),s=1,m==1&&s!=0)
- {
- miao=fun_1(miao);
- write1302(write_protect,0x00);
- write1302(write_miao,miao);
- write1302(write_protect,0x80);
- }
- if(m==2&&s!=0)
- { fen=fun_1(fen);
- write1302(write_protect,0x00);
- write1302(write_fen,fen);
- write1302(write_protect,0x80);
- }
- if(m==3&&s!=0)
- {
- shi=shi/16*10+shi%16;
- shi++;
- shi>=24?shi=0:shi;
- shi=shi/10*16+shi%10;
- write1302(write_protect,0x00);
- write1302(write_shi,shi);
- write1302(write_protect,0x80);
- }
- while(!k2)display_1();
- }
- }
- }
- void main()
- {
- initial();
- while(1)
- {
- shi=read1302(read_shi);
- fen=read1302(read_fen);
- miao=read1302(read_miao);
- keyboard();
- /* if(m!=0)
- {
- write1302(write_protect,0x00); //禁止寫(xiě)保護(hù)
- write1302(write_shi,shi);
- write1302(write_fen,fen);
- write1302(write_miao,miao);
- write1302(write_protect,0x80); //允許寫(xiě)保護(hù)
- } */
- m!=0?display_2():display_1();
- }
- }
- void time_1() interrupt 3
- {
- if(TH1=(65536-56074)/256,TL1=(65536-56074)%256,num1++,num1==20)
- {
- num1=0;
- num2++;
- }
- }
- 說(shuō)實(shí)話，我對(duì)這個(gè)程序不是很滿意，因?yàn)檫@個(gè)程序在設(shè)置部分還有不足，比如說(shuō)在設(shè)置的時(shí)候秒還在走;如果說(shuō)要在設(shè)置的時(shí)候讓時(shí)候不走，那么就得每時(shí)每刻都往1302中寫(xiě)入秒，但是寫(xiě)的時(shí)間又太長(zhǎng)，從而導(dǎo)致了常亮部分也出現(xiàn)了閃爍的現(xiàn)象：
- /* if(m!=0)
- {
- write1302(write_protect,0x00); //禁止寫(xiě)保護(hù)
- write1302(write_shi,shi);
- write1302(write_fen,fen);
- write1302(write_miao,miao);
- write1302(write_protect,0x80); //允許寫(xiě)保護(hù)
- } */
- 我不知道為什么寫(xiě)的時(shí)間會(huì)有那么長(zhǎng)，以致于出現(xiàn)了閃爍現(xiàn)象，之后我為了消除這個(gè)現(xiàn)象，就用了這個(gè)結(jié)構(gòu)：
- if(k2==0)
- {
- if(delay(5),s=1,m==1&&s!=0)
- {
- miao=fun_1(miao);
- write1302(write_protect,0x00);
- write1302(write_miao,miao);
- write1302(write_protect,0x80);
- }
- 但這個(gè)結(jié)構(gòu)有不足之處，簡(jiǎn)單的說(shuō)就是只有在做加法時(shí)才能讀寫(xiě)入，其他時(shí)間都不會(huì)讀寫(xiě)入。正因?yàn)檫@樣才消除了閃爍，但是這個(gè)方法卻帶來(lái)了新的問(wèn)題，由于這個(gè)程序只有在做加法時(shí)才能讀寫(xiě)入所以在不讀寫(xiě)入的時(shí)間里時(shí)間一直在走。
- 用1302做的時(shí)鐘最吸引人眼球的就是在斷電的時(shí)候不影響時(shí)間的進(jìn)行，不過(guò)這需要備用電源的支持！
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