- #include<reg52.h>//52单片机头文件,规定了52单片机的寄存器和IO口等
- #include<intrins.h>//_nop_空指令及左右循环移位子函数库
- #define uchar unsigned char//宏定义
- #define uint unsigned int//宏定义
-
- sbit lcd_rs=P2^0;//定义选数据寄存器选指令寄存器控制端
- sbit lcd_rw=P2^1;//定义下面通过lcd_rw来操作P2^5口,1602读写选择端
- sbit lcd_en=P2^2;//定义下面通过lcd_en来操作P2^7口,1602液晶使能控制端
- sbit DS_rst=P3^4;//DS1302复位
- sbit DS_sck=P3^5;//定义时钟总线
- sbit DS_io=P3^6;//定义DS1302数据总线
- sbit s1=P1^0;//定义设置按钮
- sbit s2=P1^1;//定义调时按钮
- sbit s3=P1^2;//定义确定按钮
- sbit s4=P1^3;//定义闹钟调整按钮
- sbit ACC0=ACC^0;//累加器
- sbit ACC7=ACC^7;
- sbit BELL=P1^6; //喇叭
- char fen,shi,miao,ri,yue,nian,zhou,s1num,s2num,s4num,flag1,flag2,lshi,lfen;
- uchar code table[]={" 2022- - W "};//要写入1602液晶的数据
- uchar code table1[]={" : : T : "};//字库中的字可直接以外加""号的形式直接写入
- uchar code table2[]={" Welcome To Lcd!"};//欢迎界面
- uchar code table3[]={"Happy Every Day!"}; //欢迎界面
- /*******************************************************************************
- 时函数,z的取值为这个函数的延时ms数,delay(200);大约延时200ms. 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--);
- }
- /*********************蜂鸣器函数************************************************/
- void didi()
- {
- uchar i;
- for(i=0;i<60;i++)
- {
- BELL = 0;
- delay(1);
- BELL = 1;
- delay(1);
- }
- }
- /*******************向1602液晶中写一个指令**************************************/
- void write_com(uchar com)
- {
- lcd_rw=0; //lcd_rw为读写控制端,lcd_rw=0,这里可不写
- lcd_rs=0; //液晶rs接口为0时,写指令,rs为1时写数据
- P0=com; //将要写的指令赋给P0口,
- delay(5); //由1602读写操作时序图,先将指令赋给P0口,延时后将使能
- lcd_en=1; // 端lcd_en置高,再延时一段时间,然后将lcd_en置低,这样指令
- delay(5); // 就写入到LCD了
- lcd_en=0;
- }
- /****************************向液晶写数据***************************************/
- void write_data(uchar date)//与写指令类似,这里lcd_rs设为1
- {
-
- lcd_rs=1;
- lcd_rw=0;
- P0=date;
- delay(5);
- lcd_en=1;
- delay(5);
- lcd_en=0;
- }
- /*****************************初使化1602液晶************************************/
- void init_1602()
- {
- lcd_en=0;
- nian=22;
- yue=6;
- ri=21;
- zhou=5;
- shi=13;
- fen=59;
- miao=59;
- s1num=0;
- s2num=0;
- s4num=0;
- lshi=7;
- lfen=59;
- write_com(0x38);//设置LCD为16*2显示、5*7点阵、8位数据接口模式
- write_com(0x0c);//开显示、不显示光标
- write_com(0x06);//写一个字符后,地址指针加1
- write_com(0x01);//显示清0
- }
- /*******************************************************************************/
- void gudingtime_1602()
- {
- uchar num;
- write_com(0x80);//将指针指向初始位置
- for(num=0;num<16;num++)//循环函数,用于将" 2022- - "写入液晶
- write_data(table[num]);
- write_com(0x80+0x40);//将指针指向1602液晶的第二行
- for(num=0;num<16;num++)//功能与上同,用于将" : : T : "写入
- write_data(table1[num]);
- }
- /**************************显示欢迎界面函数*************************************/
- void displaystar(void)
- {
- 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*********************************/
- void write_sfm(uchar add,uchar time)//用于在1602上显示年、月、日、时、分、秒。Add为显示位置,time为要显示的内容
- {
- uchar shiwei,gewei;
- shiwei=time/16; //将从DS1302中读取的BCD码数据转化成10进制个位和10
- gewei=time%16; //进制十位
- write_com(add+0x80);//定义显示在液晶的什么位置
- write_data(0x30+shiwei);//由1602液晶字库可知,0~9的数据码分别对应0x30~0x39
- write_data(0x30+gewei); //初使化中设定了写一个字符后,地址指针加1,因此这里
- } // 不用重新光标写位
- /**************************显示周子函数*****************************************/
- void write_zhou(uchar time1)//用于在1602上显示周信息,与显示
- { //时间日期子函数类似
- uchar gewei;
- gewei=time1%16;//一周七天,因此只需个位
- write_com(0x80+14);//初始位置加13个
- write_data(0x30+gewei);
- }
- /***************************写数据字节子函数************************************/
- void Input_1byte(uchar TD)//写一字节数据
- {
- uchar i;
- ACC=TD;
- for(i=8;i>0;i--)
- {
- DS_io=ACC0;
- DS_sck=1;
- DS_sck=0;
- ACC=ACC>>1; //右移一位
- }
- }
- /*************************读数据字节子函数**************************************/
- uchar Output_1byte(void)//读一字节数据
- {
- uchar i;
- for(i=8;i>0;i--)
- {
- ACC=ACC>>1;
- ACC7=DS_io;
- DS_sck=1;
- DS_sck=0;
- }
- return(ACC);
- }
- /***************************写DS1302数据函数***********************************/
- void write_1302(uchar DS_ADD,uchar DS_DAT)//写操作
- {
- DS_rst=0;
- DS_sck=0;
- DS_rst=1;
- Input_1byte(DS_ADD);
- Input_1byte(DS_DAT);
- DS_sck=1;
- DS_rst=0;
- }
- /***************************读DS1302数据函数***********************************/
- uchar read_1302(uchar DS_ADD)//读操作
- {
- uchar DS_INF;
- DS_rst=0;
- DS_sck=0;
- DS_rst=1;
- Input_1byte(DS_ADD);
- DS_INF=Output_1byte();
- DS_sck=1;
- DS_rst=0;
- return(DS_INF);
- }
- /*************************初始化DS1302子函数***********************************/
- void inital_1302()
- {
- write_1302(0x8e,0x00);//禁止写保护
- write_1302(0x90,0xaa);//定义充电
- write_1302(0x80,0x53);//秒
- write_1302(0x84,0x13);//时
- write_1302(0x82,0x43);//分
- write_1302(0x8c,0x12);//年
- write_1302(0x88,0x06);//月
- write_1302(0x86,0x03);//日
- write_1302(0x8a,0x06);//星期
- write_1302(0xc0,0x08);//闹钟小时初始化
- write_1302(0xfc,0x00);//闹钟分钟初始化
- write_1302(0x8e,0x80);//开保护
- }
- /********************************************************************************
- 扫描函数
- ********************************************************************************/
- void keyscan()
- {
- if(s1==0&&s4num==0) //按键1按下且s4再次之前未曾按过
- {
- delay(5);
- if(s1==0&&s4num==0)
- {
- flag1=1;
- s1num++;
- while(!s1);didi();
- if(s1num==1)
- {
- write_com(0x80+0x40+8);//光标移动到**位置
- write_com(0x0f);//显示光标
- }
- if(s1num==2)
- {
- write_1302(0x8e,0x00);//禁止写保护
- write_1302(0x80,miao);//写入秒信息
- write_1302(0x8e,0x80);//开写保护
- write_com(0x80+0x40+5);
- }
- if(s1num==3)
- {
- write_1302(0x8e,0x00);
- write_1302(0x82,fen);
- write_1302(0x8e,0x80);
- write_com(0x80+0x40+2);
- }
- if(s1num==4)
- {
- write_1302(0x8e,0x00);
- write_1302(0x88,yue);
- write_1302(0x8e,0x80);
- write_com(0x80+13);
- }
- if(s1num==5)
- {
- write_1302(0x8e,0x00);
- write_1302(0x84,shi);
- write_1302(0x8e,0x80);
- write_com(0x80+10);
- }
- if(s1num==6)
- {
- write_1302(0x8e,0x00);
- write_1302(0x86,ri);
- write_1302(0x8e,0x80);
- write_com(0x80+7);
- }
- if(s1num==7)
- {
- write_1302(0x8e,0x00);
- write_1302(0x8c,nian);
- write_1302(0x8e,0x80);
- write_com(0x80+4);
- }
- if(s1num==8)
- {
- flag1=0;
- s1num=0;
- write_1302(0x8e,0x00);
- write_1302(0x8a,zhou);
- write_1302(0x8e,0x80);
- write_com(0x0c);//不显示光标
- }
- }
- }
- /*******************************************************************************/
- if(s1num!=0&&s4num==0)//按键1按下*次且s4再次之前未曾按过
- {
- if(s2==0)
- {
- delay(5);
- if(s2==0)
- {
- while(!s2);didi();
- if(s1num==1)
- {
- int x1,x2;
- x1=miao%16;
- x2=miao/16;
- x1++;
- if(x1==10)
- {
- x1=0;
- x2++;
- if(x2>=6)
- x2=0;
- }
- miao=x1+x2*16;
- write_sfm(7+0x40,miao);//将修改的数送到1602显示
- write_com(0x80+0x40+8);//挪回光标
- }
- if(s1num==2)
- {
- int x3,x4;
- x3=fen%16;
- x4=fen/16;
- x3++;
- if(x3==10)
- {
- x3=0;
- x4++;
- if(x4>=6)
- x4=0;
- }
- fen=x3+x4*16;
- write_sfm(4+0x40,fen);
- write_com(0x80+0x40+5);
- }
- if(s1num==3)
- {
- int x5,x6;
- x5=shi%16;
- x6=shi/16;
- x5++;
- if(x6>=2&&x5>=4)
- {
- x5=0;
- x6=0;
- }
- if(x5==10)
- {
- x5=0;
- x6++;
- }
- shi=x5+x6*16;
- write_sfm(1+0x40,shi);
- write_com(0x80+0x40+2);
- }
- if(s1num==4)
- {
- zhou++;
- if(zhou==8)
- zhou=1;
- write_zhou(zhou);
- write_com(0x80+13);
-
- }
- if(s1num==5)
- {
- int x5,x6;
- x5=ri%16;
- x6=ri/16;
- x5++;
- if(x6>=3&&x5>=1)
- {
- x5=1;
- x6=0;
- }
- if(x5==10)
- {
- x5=0;
- x6++;
- }
- ri=x5+x6*16;
- write_sfm(9,ri);
- write_com(0x80+10);
- }
- if(s1num==6)
- {
- int x5,x6;
- x5=yue%16;
- x6=yue/16;
- x5++;
- if(x6>=1&&x5>=3)
- {
- x5=1;
- x6=0;
- }
- if(x5==10)
- {
- x5=0;
- x6++;
- }
- yue=x5+x6*16;
- write_sfm(6,yue);
- write_com(0x80+7);
- }
- if(s1num==7)
- {
- int x5,x6;
- x5=nian%16;
- x6=nian/16;
- x5++;
- if(x6>=2&&x5>=1)
- {
- x5=1;
- x6=0;
- }
- if(x5==10)
- {
- x5=0;
- x6++;
- }
- nian=x5+x6*16;
- write_sfm(3,nian);
- write_com(0x80+4);
- }
- }
- }
- }
- /*******************************************************************************/
- if(s1num!=0||s4num!=0)// 在调整模式下
- {
- if(s3==0)//如果确定键按下
- {
- delay(5);
- if(s3==0) //延时并重新检测S3是否按下,用于差小误差
- {
- if(s1num!=0)
- {
- while(!s3);didi();//在松手时将调整后的时间、日期及周信息写入DS1302,退出调整模式并隐藏光标,按键次数清0
- write_1302(0x8e,0x00);
- write_1302(0x80,miao);
- write_1302(0x84,shi);
- write_1302(0x82,fen);
- write_1302(0x8a,zhou);
- write_1302(0x8c,nian);//年
- write_1302(0x88,yue);//月
- write_1302(0x86,ri);
- write_1302(0x8e,0x80);
- flag1=0;
- write_com(0x0c);
- s1num=0;
- }
- if(s4num!=0)
- {
- while(!s3);didi();//在松手时将调整后的时间、日期及周信息写入DS1302,退出调整模式并隐藏光标,按键次数清0
- write_1302(0x8e,0x00);
- write_1302(0xc0,lshi);
- write_1302(0xfc,lfen);
- write_1302(0x8e,0x80);
- flag2=0;
- s4num=0;
- write_com(0x0c);
- }
- }
- }
- }
- if(s4==0&&s1num==0)//按键4按下*次且s1再次之前未曾按过
- {
-
- delay(5);
- if(s4==0&&s1num==0)
- {
- s4num++;
- flag2=1;
- while(!s4);didi();
- if(s4num==1)
- {
-
- write_com(0x80+0x40+14);
- write_com(0x0f);
- }
-
- if(s4num==2)
- {
- write_1302(0x8e,0x00);//禁止写保护
- write_1302(0xfc,lfen);//闹钟初始化
- write_1302(0x8e,0x80);//开写保护
- write_com(0x80+0x40+11);
- }
- if(s4num==3)
- {
- s4num=0;
- flag2=0;
- write_1302(0x8e,0x00);//禁止写保护
- write_1302(0xc0,lshi);//闹钟初始化
- write_1302(0x8e,0x80);//开写保护
- write_com(0x0c);//不显示光标
- }
- }
- }
-
- if(s4num!=0&&s1num==0)
- {
- if(s2==0)
- {
- delay(5);
- if(s2==0)
- {
- while(!s2);didi();
- if(s4num==1)
- {
- int x1,x2;
- x1=lfen%16;
- x2=lfen/16;
- x1++;
- if(x1==10)
- {
- x1=0;
- x2++;
- if(x2>=6)
- x2=0;
- }
- lfen=x1+x2*16;
- write_sfm(13+0x40,lfen);
- write_com(0x80+0x40+14);
- }
- if(s4num==2)
- {
- int x5,x6;
- x5=lshi%16;
- x6=lshi/16;
- x5++;
- if(x6>=2&&x5>=4)
- {
- x5=0;
- x6=0;
- }
- if(x5==10)
- {
- x5=0;
- x6++;
- }
- lshi=x5+x6*16;
- write_sfm(10+0x40,lshi);
- write_com(0x80+0x40+11);
- }
- }
- }
- }
- }
- void laba()
- {
- if((shi==lshi)&&(fen==lfen)&&(miao<=10&&miao>=0))//当闹钟的时和分分别与时钟的时和分相等时,闹钟时间到,蜂鸣器鸣响,鸣响10s
- {
- didi();
- }
- }
- void main()
- {
- init_1602();
- delay(5);
- displaystar();//初始化1602后马上显示欢迎语句
- delay(5000);//让欢迎界面停留一段时间
- gudingtime_1602();//显示液晶固定不变部分
- inital_1302();
- lshi=read_1302(0xc1);//从ds1302里面的RAM读取闹钟时,此处不放在while(1)大循环里面是因为ds1302里面的RAM里的数据是不变的只需读取一次
- lfen=read_1302(0xfd);//从ds1302里面的RAM读取闹钟分
- write_sfm(0x40+11,lshi);//将闹钟时送到1602显示
- write_sfm(0x40+14,lfen);//将闹钟分送到1602显示
- while(1)
- {
- keyscan();
- laba();
- if(flag1==0&&flag2==0)//只有当不在调整的时候才从DS1302里面读取数据并且送到1602上显示
- {
- miao=read_1302(0x81);//先读出,再送到1602显示,不断循环操作,使1602动态显示时间的走动
- fen=read_1302(0x83);
- shi=read_1302(0x85);
- ri=read_1302(0x87);
- yue=read_1302(0x89);
- zhou=read_1302(0x8b);
- nian=read_1302(0x8d);
-
- write_sfm(6+0x40,miao);
- write_sfm(3+0x40,fen);
- write_sfm(0+0x40,shi);
- write_sfm(9,ri);
- write_sfm(6,yue);
- write_sfm(3,nian);
- write_zhou(zhou);
- }
- }
- }
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