📄 _ds12c887
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#include<reg52.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
sbit lcdrs=P2^4;
sbit lcden=P2^6;
sbit s1=P3^0; //功能键
sbit s2=P3^1; //增大键
sbit s3=P3^2; //减小键
sbit s4=P3^6; //闹铃查看键
sbit beep=P2^3;//蜂鸣器
sbit dscs=P1^4;
sbit dsas=P1^5;
sbit dsrw=P1^6;
sbit dsds=P1^7;
sbit dsirq=P3^3; //中断
bit flag1,flag_ri;//定义标志位 flag1设置闹铃
uchar count,s1num,flag,t0_num;
char miao,shi,fen,year,month,day,week,amiao,afen,ashi;
char code table[]=" 20 - - "; // 20 - -
uchar code table1[]=" : : "; // : :
//******************************************************************
//函数声明
void write_ds(uchar,uchar); uchar read_ds(uchar);void set_time();
void read_alarm();void set_alarm(uchar,uchar,uchar);
//******************************************************************
void delayms(uint z) //延时毫秒的程序
{
uint x,y;
for(x=z;x>0;x--)
for(y=112;y>0;y--);
}
void di()
{
beep=0;
delayms(100);
beep=1;
}
//******************************************************************
//LCD1602程序
//******************************************************************
void write_cmd(uchar cmd)
{
lcden=0;
lcdrs=0;
P0=cmd;
_nop_();
lcden=1;
delayms(1);
lcden=0;
_nop_();
}
void write_dat(uchar dat)
{
lcden=0;
lcdrs=1;
P0=dat;
_nop_();
lcden=1;
delayms(1);
lcden=0;
_nop_();
}
void lcdint()
{
lcden=0;
write_cmd(0x38); // 显示模式设置
write_cmd(0x0c); //开显示，不显示光标，不闪烁
write_cmd(0x06); //写一个字符后地址加1，屏幕不移
write_cmd(0x01); //清屏
delayms(1);
}
//lcd显示程序
//******************************************************************
void write_sfm(uchar add,char date) //写时间,2位一起写
{
char shi,ge;
shi=date/10;ge=date%10;
write_cmd(0xc0+add);
write_dat(0x30+shi);
write_dat(0x30+ge);
}
void write_nyr(uchar add,char date)//年月日
{
char shi,ge;
shi=date/10;ge=date%10;
write_cmd(0x80+add);
write_dat(0x30+shi);
write_dat(0x30+ge);
}
void write_week(char we)//星期
{
write_cmd(0x80+12);
switch(we)
{
case 1: write_dat('M');write_dat('O');write_dat('N');break;
case 2: write_dat('T');write_dat('U');write_dat('E');break;
case 3: write_dat('W');write_dat('E');write_dat('D');break;
case 4: write_dat('T');write_dat('H');write_dat('U');break;
case 5: write_dat('F');write_dat('R');write_dat('I');break;
case 6: write_dat('S');write_dat('A');write_dat('T');break;
case 7: write_dat('S');write_dat('U');write_dat('N');break;
}
}
//******************************************************************
//******************************************************************
void init()
{
uchar num;
EA=1;//开总中断
EX1=1;//开外部中断1
IT1=1;//外部中断下降沿触发
flag1=0; t0_num=0;s1num=0;week=1;
write_ds(0x0A,0x20);//打开振荡器
write_ds(0x0B,0x26);//设置24小时模式，数据二进制格式，开启闹铃中断
set_time();//设置上电默认时间,调试的时候用
lcdint();
write_cmd(0x80);
for(num=0;num<15;num++)
{
write_dat(table[num]);
}
write_cmd(0xc0);
for(num=0;num<11;num++)
{
write_dat(table1[num]);
}
}
//******************************************************************
//DS12C887程序
//******************************************************************
void write_ds(uchar add,uchar date)//写12c887函数
{
dscs=0;
dsas=1;
dsds=1;
dsrw=1;
P0=add; //写地址
dsas=0;
dsrw=0;
P0=date; //写数据
dsrw=1;
dsas=1;
dscs=1;
}
uchar read_ds(uchar add) //读12c887
{
uchar ds_date;
dsas=1;
dsds=1;
dsrw=1;
dscs=0;
P0=add;
dsas=0;
dsds=0;
P0=0xff;
ds_date=P0;
dsds=1;
dsas=1;
dscs=1;
return ds_date;
}
void set_time() //初始化
{
write_ds(0,0); //秒
write_ds(1,10); //秒闹铃
write_ds(2,34); //分钟
write_ds(3,34); //分钟闹铃
write_ds(4,15); //小时
write_ds(5,15); //小时闹铃
write_ds(6,5); //星期
write_ds(7,20); //日
write_ds(8,5); //月
write_ds(9,11); //年
}
void read_alarm()
{
amiao=read_ds(1);
afen=read_ds(3);
ashi=read_ds(5);
}
//******************************************************************
//按键程序
void keyscan()
{ //**********************************************************
//按任意键取消闹钟报警
if(flag_ri==1)
{
if((s1==0)||(s2==0)||(s3==0)||(s4==0))//按任意键取消闹钟报警
{
delayms(5);
if((s1==0)||(s2==0)||(s3==0)||(s4==0))
{
while(!(s1&&s2&&s3&&s4));di();
flag_ri=0;
}
}
}
//**********************************************************
if(s1==0) //如果功能按键1按下
{
delayms(5); //去抖动
if(s1==0)
{
while(!s1); //等待松手
s1num++; //记下次数
di(); //蜂鸣器响
//********************************************************
if(flag1==1) //设置闹铃为1时才对s1num调整，只调秒，分，时
{
if(s1num>3)
{
s1num=1;
}
}
//********************************************************
flag=1; //在调整时间时标志位flag为1，不进行正常操作
switch(s1num)
{
case 1:write_cmd(0xc0+10); write_cmd(0x0f);break; //按一下秒钟 指针显示闪烁
case 2:write_cmd(0xc0+7); break;
case 3:write_cmd(0xc0+4); break;
case 4:write_cmd(0x80+12); break;
case 5:write_cmd(0x80+9); break;
case 6:write_cmd(0x80+6); break;
case 7:write_cmd(0x80+3); break;
default: //用default可以解决s1num跑飞
s1num=0;
write_cmd(0x0c); //按了8次关闪烁，flag=0,退出调整，显示时间
flag=0;
write_ds(0,miao); //将调整后的时间写入ds12c887
write_ds(2,fen);
write_ds(4,shi);
write_ds(6,week);
write_ds(7,day);
write_ds(8,month);
write_ds(9,year);
break;
}
}
}
//**********************************************************
//S1有按下过，检测S2，S3
//如果按键2按下执行加，//如果按键3按下执行减
if(s1num!=0) //S1有按下过，检测S2，S3
{
if(s2==0) //如果按键2按下执行加
{
delayms(5);
if(s2==0)
{
while(!s2);di();
switch(s1num)
{
case 1:
miao++;
if(miao>59)
{
miao=0;
}
write_sfm(10,miao);
write_cmd(0x80+0x40+10);
break;
case 2:
fen++;
if(fen>59)
{
fen=0;
}
write_sfm(7,fen);
write_cmd(0x80+0x40+7);
break;
case 3:
shi++;
if(shi>23)
{
shi=0;
}
write_sfm(4,shi);
write_cmd(0x80+0x40+4);
break;
case 4:
week++;
if(week>7)
{
week=1;
}
write_week(week);
write_cmd(0x80+12);
break;
case 5:
day++;
if(day>31)
{
day=1;
}
write_nyr(9,day);
write_cmd(0x80+9);
break;
case 6:
month++;
if(month>12)
{
month=1;
}
write_nyr(6,month);
write_cmd(0x80+6);
break;
case 7:
year++;
if(year>99)
{
year=0;
}
write_nyr(3,year);
write_cmd(0x80+3);
break;
}
}
}
//*****************************************
if(s3==0)
{
delayms(5);
if(s3==0)
{
while(!s3);di();
switch(s1num)
{
case 1:
miao--;
if(miao<0)
{
miao=59;
}
write_sfm(10,miao);
write_cmd(0x80+0x40+10);
break;
case 2:
fen--;
if(fen<0)
{
fen=59;
}
write_sfm(7,fen);
write_cmd(0x80+0x40+7);
break;
case 3:
shi--;
if(shi<0)
{
shi=23;
}
write_sfm(4,shi);
write_cmd(0x80+0x40+4);
break;
case 4:
week--;
if(week<1)
{
week=7;
}
write_week(week);
write_cmd(0x80+12);
break;
case 5:
day--;
if(day<1)
{
day=31;
}
write_nyr(9,day);
write_cmd(0x80+9);
break;
case 6:
month--;
if(month<1)
{
month=12;
}
write_nyr(6,month);
write_cmd(0x80+6);
break;
case 7:
year--;
if(year<0)
{
year=99;
}
write_nyr(3,year);
write_cmd(0x80+3);
break;
}
}
}
}
//**********************************************************
if(s4==0)
{
delayms(5);
if(s4==0)
{
while(!s4);di(); flag1=~flag1; //闹铃调好后再按一次键返回
if(flag1==0) //退出闹钟设置保存数值
{
flag=0; //启动时间显示
write_cmd(0x80+0x40);
write_dat(' ');
write_dat(' ');
write_cmd(0x0c); //清屏下，否则光标乱跳 （闹铃调时间时）
write_ds(1,miao);
write_ds(3,fen);
write_ds(5,shi);
}
else //设置闹钟
{
read_alarm(); //读原始数据
miao=amiao;
fen=afen;
shi=ashi;
write_cmd(0xc0);
write_dat('R');write_dat('i');
write_cmd(0x80+0x40);
write_sfm(4,ashi);
write_sfm(7,afen);
write_sfm(10,amiao);
}
}
}
}
//******************************************************************
//主程序
//******************************************************************
void main()
{
init();
while(1)
{
keyscan(); //键盘不断扫描
if(flag_ri==1) //如果闹铃时间到
{
di();
delayms(100);
di();
delayms(500);
}
if(flag==0&&flag1==0)
{
keyscan();
year=read_ds(9);
month=read_ds(8);
day=read_ds(7);
week=read_ds(6);
shi=read_ds(4);
fen=read_ds(2);
miao=read_ds(0);
write_sfm(10,miao);
write_sfm(7,fen);
write_sfm(4,shi);
write_week(week);
write_nyr(3,year);
write_nyr(6,month);
write_nyr(9,day);
}
}
}
void exter()interrupt 2 //闹铃外部中断1
{
uchar c; //闹铃时间到
flag_ri=1;
c=read_ds(0x0c); //读C寄存器表示响应中断
}
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