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标准DS1302时钟可设置

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标准DS1302时钟可设置标准电路图/***********标准源码***********/#include<reg52.h> #include<intrins.h> unsigned char code displaywelcome[]={" I loveyou!"}; unsigned char code displaywish[]={"Zhou hui ming"}; unsigned char codeovertemperature[]={"OVERTEMPERATURE!"}; unsigned char codedigit[]={"0123456789"}; unsigned charmode,length,tempswitch,Maxtemp=40,amode,alarmmode,minutes,hours,minutea,seconds,houra=12; sbit RS=P2^0; sbit RW=P2^1;sbit E=P2^2;sbit BF=P0^7;sbit SCLK=P1^1; sbitDATE=P1^0; sbitREST=P1^2; / sbitSET=P1^4; sbitADD=P1^5; sbitRED=P1^6; voiddelay1ms(int i) {int j,k; while(i--)for(j=15;j>1;j--);for(k=30;k>1;k--);} void delaynus(unsigned char n) {unsigned char i;for(i=0;i<n;i++); }sbit beep=P1^7;void dely500(void){ unsigned char i;for(i=250;i>0;i--){ _nop_();} } void baojing(unsignedchar n) {unsigned char x,i;while(n--){ for(i=0;i<5;i++) {for(x=0;x<200;x++){ beep=~beep;dely500();} } for(i=0;i<3;i++){ for(x=0;x<200;x++) {beep=~beep;dely500();dely500();} } } }void Write1302(unsigned char date) { unsigned char i;SCLK=0; delaynus(2);for(i=0;i<8;i++) {DATE=date&0x01;SCLK=1; delaynus(2);SCLK=0; delaynus(2);date>>=1;}}void WriteSet1302(unsigned char cmd,unsigned char date) { REST=0; SCLK=0;REST=1; Write1302(cmd);delaynus(5); Write1302(date)SCLK=1; REST=0;}unsigned char Read1302(void){ unsigned char i,date;delaynus(2);for(i=0;i<8;i++){ date>>=1;if(DATE==1)date|=0x80; SCLK=1;delaynus(2); SCLK=0delaynus(2);}return date;}unsigned char ReadSet1302(unsigned char cmd) { unsigned char date;REST=0; SCLK=0;REST=1;Write1302(cmd);delaynus(2);date=Read1302();SCLK=1; REST=0;return date;}void IntDS1302(void) //DS1302{ unsigned char flag;flag= ReadSet1302(0x81);if(flag&0x80) {WriteSet1302(0x8E,0x00);WriteSet1302(0x80,((0/10)<<4|(0%10))); WriteSet1302(0x82,((0/10)<<4|(0%10))); WriteSet1302(0x84,((0/10)<<4|(0%10))); WriteSet1302(0x86,((0/10)<<4|(0%10))); WriteSet1302(0x88,((0/10)<<4|(0%10))); WriteSet1302(0x8c,((10/10)<<4|(10%10))); WriteSet1302(0x90,0xa5);WriteSet1302(0x8E,0x80);}bit BusyTest(void)}{ bit result;RS=0; RW=1; E=1_nop_(); _nop_();_nop_(); result=BF;_nop_(); _nop_();_nop_(); E=0; returnresult;}void Write_com(unsigned char command) { while(BusyTest()!=0);RS=0; RW=0; E=0; _nop_()_nop_(); _nop_();P0=command;_nop_(); _nop_()_nop_(); E=1;_nop_(); _nop_()_nop_(); E=0;}void Write_Address(unsigned char address) { Write_com(address|0x80);delay1ms(1);}void Write_Date(unsigned char date){ RS=1; RW=0;E=0; _nop_();_nop_(); _nop_(); P0=date; _nop_(); _nop_(); _nop_();E=1; _nop_();_nop_(); _nop_();E=0; delay1ms(1);}/*初始化*/void Lcd_Int(void) { Write_com(0x38); delay1ms(1);Write_com(0x38); delay1ms(1);Write_com(0x06); delay1ms(1);Write_com(0x0c);delay1ms(1);Write_com(0x01);}void displaymainpart(void){ Write_Address(0x01); delay1ms(1); Write_Date('D'); Write_Date('A');Write_Date('T');Write_Date('E');Write_Date(':'); delay1ms(1); Write_Address(0x0A);delay1ms(1); Write_Date('-'); Write_Address(0x0D);Write_Date('-');Write_Address(0x42);Write_Date('T');Write_Date('I');Write_Date('M');Write_Date('E');Write_Date(':');Write_Address(0x4A);Write_Date('-');Write_Address(0x4D);Write_Date('-');Write_Address(0x06);Write_Date('2');Write_Date('0');}void display_Second(unsigned char second) { unsigned char i,j;i=second/10; j=second%10;Write_Address(0x4E);Write_Date(digit[i]);Write_Date(digit[j]);delay1ms(1);}void display_Minute(unsigned char minute){ unsigned char i,j;i=minute/10; j=minute%10;Write_Address(0x4B);Write_Date(digit[i]);Write_Date(digit[j]);delay1ms(1);}void display_Hour(unsigned char hour) { unsigned char i,j; i=hour/10;j=hour%10;Write_Address(0x48);Write_Date(digit[i]);Write_Date(digit[j]);delay1ms(1);}void display_Day(unsigned char day) { unsigned char i,j;i=day/10; j=day%10;Write_Address(0x0E);Write_Date(digit[i]);Write_Date(digit[j]);delay1ms(1);}void display_Month(unsigned char month) { unsigned char i,j;i=month/10; j=month%10;Write_Address(0x0B);Write_Date(digit[i]);Write_Date(digit[j]);delay1ms(1);}void display_Year(unsigned char year) { unsigned char i,j;i=year/10; j=year%10;Write_Address(0x08);Write_Date(digit[i]);Write_Date(digit[j]);delay1ms(1);}void display_houra(unsigned char x) { unsigned char i,j; i=x/10;j=x%10;Write_Address(0x44);Write_Date(digit[i]);Write_Date(digit[j]);}void display_minutea(unsigned char x) { unsigned char i,j; i=x/10;j=x%10;Write_Address(0x47);Write_Date(digit[i]);Write_Date(digit[j]);}void display_Time(void){ unsigned char value,day,month,year;Write_com(0x0c); value=ReadSet1302(0x81); seconds=(((value&0x70)>>4)*10+(value&0x0f)); display_Second(seconds); value=ReadSet1302(0x83) minutes=(((value&0x70)>>4)*10+(value&0x0f)); display_Minute(minutes); value=ReadSet1302(0x85) hours=(((value&0x70)>>4)*10+(value&0x0f)); display_Hour(hours); value=ReadSet1302(0x87); day=(((value&0x70)>>4)*10+(value&0x0f)); display_Day(day); value=ReadSet1302(0x89);month=(((value&0x70)>>4)*10+(value&0x0f)); display_Month(month); value=ReadSet1302(0x8D); year=(((value&0xf0)>>4)*10+(value&0x0f));display_Year(year); } voiddisplaystar(void) {unsigned char i,j;Write_Address(0x0f);while(displaywelcome[i]!='\0') {Write_Date(displaywelcome[i]); i++; delay1ms(1);} i=0; Write_Address(0x4f);while(displaywish[i]!='\0') {Write_Date(displaywish[i]); i++;delay1ms(1);} j=40; while(j--){ Write_com(0x18);delay1ms(700);} Write_com(0x01);delay1ms(10);}void gbdisplay(unsigned char address) { Write_Address(address);delay1ms(5); Write_com(0x0f); delay1ms(5);}void displaymaxt(unsigned char x) { unsigned char i,j,k;Write_com(0x0c);delay1ms(2);Write_Address(0x44);i=x/100; j=x/10;k=x%10;Write_Date(digit[i]);Write_Date(digit[j]);Write_Date(digit[k]);}void hourset(void){ unsigned char timevalue,hour; delay1ms(500); WriteSet1302(0x8e,0x00); timevalue=ReadSet1302(0x85); hour=(((timevalue&0x70)>>4)*10+(timevalue&0x0f)); while(1) {if(ADD==0){ delay1ms(50);if(ADD==0) {hour++;delay1ms(300);while(ADD==0);} } if(RED==0) {delay1ms(50);if(RED==0) {hour--; delay1ms(300);if(hour==0) hour=23; while(RED==0);} } timevalue=(((hour)/10)<<4|(hour%10)); WriteSet1302(0x84,timevalue); delay1ms(1); display_Hour(hour); Write_Address(0x49); delay1ms(5); if(hour>=24) hour=0;delay1ms (5);if(sound==0) {mode=0; Write_com(0x0c);break;}if(SET==0) break; }WriteSet1302(0x8e,0x80);} void minuteset(void) {unsigned char timevalue,minute; delay1ms(500);WriteSet1302(0x8e,0x00); timevalue=ReadSet1302(0x83); minute=(((timevalue&0x70)>>4)*10+(timevalue&0x0f)); while(1) {if(ADD==0) {delay1ms(10);if(ADD==0) {minute++; if(minute>=60) timevalue=0; while(ADD==0);} } if(RED==0) {delay1ms(10);if(RED==0) {minute--; delay1ms(300);if(minute==0) minute=59; while(RED==0);} } timevalue=((minute/10)<<4|(minute%10)); WriteSet1302(0x82,timevalue); delay1ms(1);display_Minute(minute);Write_Address(0x4c); delay1ms(5); if(minute>=60) minute=0;delay1ms(5); if(sound==0) {mode=0; Write_com(0x0c); break;}if(SET==0) break; }WriteSet1302(0x8e,0x80);} void secondset(void) {unsigned char second;delay1ms(500);WriteSet1302(0x8e,0x00); while(1) {if(ADD==0){ delay1ms(10);if(ADD==0) {second=0; WriteSet1302(0x80,0x00); while(ADD==0);} } delay1ms(1);display_Second(second);Write_Address(0x4f); delay1ms(5);if(sound==0) {mode=0; Write_com(0x0c);break;} if(SET==0) break; }WriteSet1302(0x8e,0x80); } voidyearset(void) //调年 {unsigned char datevalue,year; delay1ms(500);WriteSet1302(0x8e,0x00); datevalue=ReadSet1302(0x8d) year=(((datevalue&0x70)>>4)*10+(datevalue&0x0f)); while(1) {if(ADD==0){ delay1ms(10);if(ADD==0) {year++; while(ADD==0);} } if(RED==0) {delay1ms(10);if(RED==0) {year--; delay1ms(300);while(RED==0);} } datevalue=((year/10)<<4|(year%10)); WriteSet1302(0x8c,datevalue); delay1ms(5) display_Year(year); delay1ms(5);Write_Address(0x09); delay1ms(5);if(sound==0) {mode=0; Write_com(0x0c); break;} if(SET==0) break;}WriteSet1302(0x8e,0x80); } voidmonthset(void) {unsigned char datevalue,month; delay1ms(500);WriteSet1302(0x8e,0x00); datevalue=ReadSet1302(0x89); month=(((datevalue&0x70)>>4)*10+(datevalue&0x0f)); while(1) {if(ADD==0){ delay1ms(10);if(ADD==0) {month++; if(month>12) month=1;while(ADD==0);} }if(RED==0){ delay1ms(10);if(RED==0) {month--; delay1ms(300);if(month==0) month=12; while(RED==0);} } datevalue=((month/10)<<4|(month%10)); WriteSet1302(0x88,datevalue); delay1ms(1); display_Month(month); Write_Address(0x0c); delay1ms(5); if(sound==0) {mode=0; Write_com(0x0c);break;}if(SET==0) break; }WriteSet1302(0x8e,0x80);} void dayset(void) {unsigned char datevalue,day ; delay1ms(500); WriteSet1302(0x8e,0x00);datevalue=ReadSet1302(0x87);day=(((datevalue&0x70)>>4)*10+(datevalue&0x0f)); while(1) {if(ADD==0){ delay1ms(10);if(ADD==0) {day++; if(day>31) day=1;while(ADD==0);}} if(RED==0) {delay1ms(10);if(RED==0) {day--; delay1ms(300);if(day==0) day=31; while(RED==0);} } datevalue=((day/10)<<4|(day%10)); WriteSet1302(0x86,datevalue); delay1ms(1); display_Day(day); Write_Address(0x0f); delay1ms(5); if(sound==0) {mode=0;Write_com(0x0c);break; } if(SET==0) break;}WriteSet1302(0x8e,0x80); } void alarmhourset(void) {unsigned char value;value=houra; while(1) {if(ADD==0){ delay1ms(20);if(ADD==0) {Write_com(0x0c); delay1ms(5); value++; if(value>23) value=0;while(ADD==0);} } if(RED==0) {delay1ms(20);if(RED==0) {value--; if(value==0) value=23; while(RED==0);} } houra=value;display_houra(houra);gbdisplay(0x45); if(sound==0) {delay1ms(500); break; } }} voidalarmminuteset(void) {while(1){ if(ADD==0) {delay1ms(20);if(ADD==0) {minutea++; if(minutea>59) minutea=0; while(ADD==0) ;} } if(RED==0) {delay1ms(20);if(RED==0) {minutea--; if(minutea==0) minutea=59;while(RED==0) ;} } display_minutea(minutea); gbdisplay(0x48); if(sound==0) {delay1ms(500); break; }} } voidTimeSet(void) {display_Time();if(SET==0) {delay1ms(10); if(SET==0){mode++; delay1ms(20);switch(mode){ case(1):{gbdisplay(0x48);hourset(); delay1ms(500);} break; case(2):{gbdisplay(0x4c);minuteset();delay1ms(500);} break; case(3):{gbdisplay(0x4f);secondset();delay1ms(500);} break; case(4):{gbdisplay(0x09);yearset();delay1ms(500);} break; case(5):{gbdisplay(0x0c);monthset();delay1ms(500);} break; case(6):{gbdisplay(0x0f);dayset();delay1ms(500);} break;} if(mode==7) mode=0; } } }void alarmswitchset(void){ while(1) {if(ADD==0){ delay1ms(100);if(ADD==0){ alarmmode=1;Write_Address(0x4c);Write_Date('O'); Write_Date('N'); Write_Date(' ');} } if(RED==0) {alarmmode=0;Write_Address(0x4c);Write_Date('O');Write_Date('F');Write_Date('F');} if(sound==0) {delay1ms(500); break; }}}void Set(void){ if(SET==0) { delay1ms(10);if(SET==0) { Write_Address(0x40); Write_Date('T'); Write_com(0x0f); delay1ms(1000); Write_com(0x0c); while(1) { TimeSet(); if(ADD==0) { delay1ms(20); if(ADD==0) {Write_com(0x01); Write_Address(0x00); delay1ms(5); Write_Date('S');delay1ms(10); Maxtempset();}}if(RED==0){ delay1ms(20); if(RED==0){ Write_com(0x01); delay1ms(5); Write_Address(0x02); Write_Date('A');Write_Date('L'); Write_Date('A');Write_Date('R'); Write_Date('M');Write_Address(0x09);Write_Date('S'); Write_Date('E');Write_Date('T'); Write_Address(0x46); Write_Date('-'); display_houra(houra); display_minutea(minutea); if(alarmmode==1) {Write_Address(0x4c); Write_Date('O'); Write_Date('N'); Write_Date(' ');} if(alarmmode==0) {Write_Address(0x4c); Write_Date('O'); Write_Date('F'); Write_Date('F');} while(1){ if(SET==0) {delay1ms(100); if(SET==0) {amode++;switch(amode) {case(1):{gbdisplay(0x45);alarmhourset();Write_com(0x0c);delay1ms(500);} break; case(2):{gbdisplay(0x48);alarmminuteset();Write_com(0x0c);delay1ms(500);} break; case(3):{gbdisplay(0x4c);alarmswitchset();Write_com(0x0c);delay1ms(500);} break;} if(amode==4) amode=0;} } if(sound==0) {Write_com(0x01); delay1ms(5);displaymainpart(); break;} }} } if(sound==0) {Write_Address(0x40); Write_Date(' '); Write_com(0x0c); break;} } }} }void main(){ IE=0X82;TMOD=0X01;TR0=0;IntDS1302(); delay1ms(1)Lcd_Int(); delay1ms(2);displaystar();displaymainpart(); while(1){display_Time( ); Set( );if(ADD==0) {Write_com(0x01);delay1ms(5); Temperature();Write_com(0x01);displaymainpart();} if((hours==houra)&&(minutes==minutea)&&(seconds==0)) { if(alarmmode==1) {Write_com(0x01); delay1ms(5); Write_Address(0x03); Write_Date('T'); Write_Date('I'); Write_Date('M');Write_Date('E'); Write_Address(0x08); Write_Date('U'); Write_Date('P');Write_Date('!'); delay1ms(5);while(1) {baojing(1); if(sound==0) {Write_com(0x01); delay1ms(5); displaymainpart(); break;}}}}}}。

合集下载

51单片机ds1302时钟

51单片机ds1302时钟

sbit runing0=runing^0;
sbit runing1=runing^1;//菜单
sbit runing2=runing^2;
sbit runing3=runing^3;
sbit runing4=runing^4;
sbit runing5=runing^5;//help
sbit runing6=runing^6;//闹铃
18b20初始化
------------------------------------------------*/
bit Init_DS18B20(void)
{
bit dat=0;
DQ = 1; //DQ复位
DelayUs2x(5); //稍做延时
DQ = 0; //单片机将DQ拉低
DelayUs2x(200); //精确延时大于480us小于960us
b=ReadOneChar(); //高位
b<<=8;
t=a+b;
return(t);
}
/*------------------------------------------------
写入命令函数
------------------------------------------------*/
void WriteOneChar(uchar dat)
{
uchar i=0;
for (i=8; i>0; i--)
{
DQ = 0;
DQ = dat&0x01;
DelayUs2x(25);
DQ = 1;
dat>>=1;
}
DelayUs2x(25);
可用按键修改时间的DS1302时钟显示程序

可用按键修改时间的DS1302时钟显示程序

for(num=0;num<16;num++)//功能与上同，用于将" : : : "写入
write_data(table1[num]);
}
/**************************显示欢迎界面函数*************************************/
void displaystar(void)
delay(500);大约延时500ms
**************************************************************/
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void delay20ms(void) //3*i*j+2*i=3*100*60+2*100=20000μs=20ms;
{
uchar i;
write_com(0x80);
for(i=0;i<16;i++)
write_data(table2[i]);
write_com(0x80+0x40);
for(i=0;i<16;i++)
write_data(table3[i]);
}
/***************************显示时间、日期子函数*********************************/
if(s1num!=0&&s4num==0)//按键1按下*次且s4再次之前未曾按过(按键按下时，时间修改函数)
51单片机,DS1302时钟,1602显示,可调时钟剖析

51单片机,DS1302时钟,1602显示,可调时钟剖析

基于proteus的51单片机仿真实例八十一、实时时钟芯片DS1302应用实例1、DS1302引脚排列:如下图引脚说明：1）Vcc1：后备电源，VCC2：主电源。

在主电源关闭的情况下，也能保持时钟的连续运行。

DS1302由Vcc1或Vcc2两者中的较大者供电。

当Vcc2大于Vcc1＋0.2V时，Vcc2给DS1302供电。

当Vcc2小于Vcc1时，DS1302由Vcc1供电。

2）X1、X2：振荡源，外接32.768kHz 晶振。

3）RST：复位/片选线，通过把RST输入驱动置高电平来启动所有的数据传送。

RST输入有两种功能：首先，RST接通控制逻辑，允许地址/命令序列送入移位寄存器；其次，RST提供终止单字节或多字节数据的传送手段。

当RST为高电平时，所有的数据传送被初始化，允许对DS1302进行操作。

如果在传送过程中RST置为低电平，则会终止此次数据传送，I/O引脚变为高阻态。

上电运行时，在Vcc>2.0V之前，RST必须保持低电平。

只有在SCLK为低电平时，才能将RST置为高电平。

4）I/O为串行数据输入输出端(双向）。

5）SCLK为时钟输入端。

2、DS1302的控制字节DS1302 的控制字如下图所示。

控制字节的最高有效位(位7)必须是逻辑1，如果它为0，则不能把数据写入DS1302中，位6如果为0，则表示存取日历时钟数据，为1表示存取RAM数据;位5至位1指示操作单元的地址;最低有效位(位0)如为0表示要进行写操作，为1表示进行读操作，控制字节总是从最低位开始输出。

3、数据输入输出(I/O)在控制指令字输入后的下一个SCLK时钟的上升沿时，数据被写入DS1302，数据输入从低位即位0开始。

同样，在紧跟8位的控制指令字后的下一个SCLK脉冲的下降沿读出DS1302的数据，读出数据时从低位0位到高位7。

DS1302的寄存器DS1302有12个寄存器，其中有7个寄存器与日历、时钟相关，存放的数据位为BCD码形式,其日历、时间寄存器及其控制字见数据手册。

DS1302数码管电子闹钟程序

DS1302数码管电子闹钟程序

/*****************************************************///DS1302+数码管+3个独立按键//// 精确定时/////*****************************************************/ /****************************************************************/// 利用ds1302精确定时，同时按键可调时间。

//// 每操作一次时钟，都会有蜂鸣器响大约200ms，以提示操作。

///***************************************************************/#include<reg52.h>#include"ds1302.h"uchar code tab[]={ 0x3F,/*0*/0x06,/*1*/0x5B,/*2*/0x4F,/*3*/0x66,/*4*/0x6D,/*5*/0x7D,/*6*/0x07,/*7*/0x7F,/*8*/0x6F,/*9*/} ;//共阴码char clock1[3]={0};int i,j=0,flag1=0;void delay(uint xms){uint x,y;for(x=xms;x>0;x--)for(y=110;y>0;y--);}void init()//初始化{//RST=0;//SCLK=0;//write_1302(0x80,0x00);//写控制字，允许写//write_1302(0x90,0x00);//禁止涡流充电TMOD=0x01;TH0=(65536-50000)/256;TL0=(65536-50000)%256;EA=1;ET0=1;TR0=1;}void display(uchar miaog,uchar miaos,uchar feng,uchar fens,uchar shig,uchar shis)//数码管动态显示{P2=0x7f;P0=tab[miaog];delay(5);P2=0xbf;P0=tab[miaos];delay(5);P2=0xdf;P0=0xc0;delay(5);P2=0xef;P0=tab[feng];delay(5);P2=0xf7;P0=tab[fens];delay(5);P2=0xfb;P0=0xc0;delay(5);P2=0xfd;P0=tab[shig];delay(5);P2=0xfe;P0=tab[shis];delay(5);}write_sfm(uchar miao,uchar fen,uchar shi) //写入到数码管{uchar miaog,miaos,feng,fens,shig,shis;miaog=miao%10;miaos=miao/10;feng=fen%10;fens=fen/10;shig=shi%10;shis=shi/10;display(miaog,miaos,feng,fens,shig,shis);}void didi() //发声程序{buzzer=0;delay(50);buzzer=1;}void keyscan()//按键扫描程序{uchar temp;if(key1==0) //功能键{if(key1==0){while(!key1);key1n=key1n++;if(key1n==5)key1n=1;switch(key1n){case 1://didi();temp=(miao)/10*16+(miao)%10;//将秒转化成bcd码，没这句秒就变化，不知为什么write_1302 (0x8e,0x00); //禁止写保护write_1302 (0x80,0x80|temp); //时钟暂停write_1302 (0x8e,0x80); //允许写保护break;case 2 ://didi();break;case 3 ://didi();break;case 4 ://didi();temp=miao/10*16+miao%10;write_1302 (0x8e,0x00); //禁止写保护write_1302 (0x80,0x00|temp);//时钟开始write_1302 (0x8e,0x80); //允许写保护break;}}}if(key4==0) //闹钟键{if(key4==0){while(!key4);keyn++;if(keyn==4)keyn=0;while(keyn){EA=0; //闹钟键if(key4==0)if(key4==0){while(!key4);keyn++;if(keyn==4)keyn=0;}write_sfm(clock1[2],clock1[1],clock1[0]);if(keyn==1) //时修改{if(key3==0) //减键{//delay(3);if(key3==0){while(!key3);clock1[0]--;if(clock1[0]<0)clock1[0]=24;}}if(key2==0) //加键{//delay(3);if(key2==0){while(!key2);clock1[0]++;if(clock1[0]>24)clock1[0]=0;}}}if(keyn==2) //分修改{if(key3==0) //减键{//delay(3);if(key3==0){while(!key3);clock1[1]--;if(clock1[1]<0)clock1[1]=59;}}if(key2==0) //加键{//delay(3);if(key2==0){while(!key2);clock1[1]++;if(clock1[1]>59)clock1[1]=0;}}}if(keyn==3) //秒修改{if(key3==0) //减键{//delay(3);if(key3==0){while(!key3);clock1[2]--;if(clock1[2]<0)clock1[2]=59;}}if(key2==0) //加键{//delay(3);if(key2==0){while(!key2);clock1[2]++;if(clock1[2]>59)clock1[2]=0;}}}}} EA=1;}if(key1n!=0) //当按下功能键key1，按以下才有用{if(key2==0) //加键{delay(3);if(key2==0){while(!key2);switch(key1n){case 1 : //didi(); //秒temp=(miao+1)/10*16+(miao+1)%10;if(miao==59)temp=0;write_1302 (0x8e,0x00); //禁止写保护write_1302 (0x80,0x80|temp);write_1302 (0x8e,0x80); //允许写保护break;case 2 : // didi(); //分temp=(fen+1)/10*16+(fen+1)%10;if(fen==59)temp=0;write_1302 (0x8e,0x00); //禁止写保护write_1302 (0x82,temp);write_1302 (0x8e,0x80); //允许写保护break;case 3 :// didi();temp=(shi+1)/10*16+(shi+1)%10; //时if(shi==23)temp=0;write_1302 (0x8e,0x00); //禁止写保护write_1302 (0x84,temp);write_1302 (0x8e,0x80); //允许写保护break;}}}if(key3==0) //减键{delay(3);if(key3==0){while(!key3);switch(key1n){case 1 ://didi();temp=(miao-1)/10*16+(miao-1)%10; //秒if(miao==0)temp=89;write_1302 (0x8e,0x00); //禁止写保护write_1302 (0x80,0x80|temp);write_1302 (0x8e,0x80); //允许写保护break;case 2 ://didi();temp=(fen-1)/10*16+(fen-1)%10; //分if(fen==0)temp=89;write_1302 (0x8e,0x00); //禁止写保护write_1302 (0x82,temp);write_1302 (0x8e,0x80); //允许写保护break;case 3 ://didi();temp=(shi-1)/10*16+(shi-1)%10; //时if(shi==0)temp=35;write_1302 (0x8e,0x00); //禁止写保护write_1302 (0x84,temp);write_1302 (0x8e,0x80); //允许写保护break;}}}}//write_1302(0x80,miao|0x80);//miao++;/* if(key2==0){if(key2==0){while(!key2);write_1302(0x80,miao|0x00);//打开1302振荡器}}*/}void main(){init();//buzzer=0;//miao=20;//fen=10;//shi=23;while(1){miao = BCD_Decimal(read_1302(0x81));fen = BCD_Decimal(read_1302(0x83));shi = BCD_Decimal(read_1302(0x85));keyscan();if((miao==clock1[2])&&(fen==clock1[1])&&(shi==clock1[0])) {flag1=1;for(i=0;i<10;i++)didi();}if(j==100) for(i=0;i<10;i++) didi();if(j==200) {for(i=0;i<10;i++)didi();flag1=0;j=0;}}}void tiemr0() interrupt 1{if(flag1) j++;TH0=(65536-50000)/256;TL0=(65536-50000)%256;write_sfm(miao,fen,shi); }。