基于ds1302的51单片机简易实时时钟-1602显示-源程序
基于ds1302和LCD1602的日历时钟51单片机程序
#include <reg52.h>#include <intrins.h>#include <string.h>#define uint unsigned int#define uchar unsigned charsbit led = P2^3;//led代替闹铃sbit IO = P1^3; //定义1302管脚//6sbit SCLK = P1^4;//7sbit RST = P1^5; //5sbit RS = P2^2;//定义1602管脚sbit RW = P2^1;sbit EN = P2^0;sbit key1=P3^4;//选择//调时键盘sbit key2=P3^5;//加sbit key3=P3^6;//减sbit key4=P3^7;//确定sbit key11=P1^6;//选择//闹钟键盘sbit key22=P1^7;//加sbit key33=P3^0;//减sbit key44=P3^1;//确定uchar x1=0,x;int hour=8,minute=0;//闹钟的初始时间8:00uchar DateTime[9]; //秒，分，时，日，周，月，年 address,uchar lcd1[]={"DATE 00-00-00 "};uchar lcd2[]={"TIME 00:00:00 "};/***************延时*************/void delayms(uchar x)//延时毫秒程序{ uchar i,j;for(i=x;i>0;i--)for(j=110;j>0;j--);}void delayus(uchar x)//延时微秒程序{ uchar i;for(i=0;i<x;i++);}/********1302的驱动程序***********///写入数据,dat:要写入的数据void DS1302WriteByte(uchar dat){uchar i;SCLK=0;//初始时钟线置为0delayus(2);for(i=0;i<8;i++)//开始传输8个字节的数据{IO=dat&0x01;//取最低位，注意DS1302的数据和地址都是从最低位开始传输的delayus(2);SCLK=1;//时钟线拉高，制造上升沿，SDA的数据被传输delayus(2);SCLK=0;//时钟线拉低，为下一个上升沿做准备dat>>=1;//数据右移一位，准备传输下一位数据}}/********1302的驱动程序**********///功能: 读取数据,dat:读取的数据uchar DS1302ReadByte(){ uchar i;uchar dat;delayus(2);for(i=0;i<8;i++){dat>>=1;//要返回的数据左移一位if(IO==1)//当数据线为高时，证明该位数据为1dat|=0x80;//要传输数据的当前值置为1,若不是,则为0SCLK=1;//拉高时钟线delayus(2);SCLK=0;//制造下降沿delayus(2);}return dat;//返回读取出的数据/16*10+dat%16}/*********1302的驱动程序*********///从cmd相应地址中读取一个字节的数据uchar DS1302Read(uchar cmd)//cmd:要写入的控制字节,dat:读取的数据{uchar dat;RST=0;//初始CE线置为0SCLK=0;//初始时钟线置为0RST=1;//初始CE置为1，传输开始DS1302WriteByte(cmd);//传输命令字，要读取的时间/日历地址dat=DS1302ReadByte();//读取要得到的时间/日期SCLK=1;//时钟线拉高RST=0;//读取结束，CE置为0，结束数据的传输return dat;//返回得到的时间/日期}/**********1302的驱动程序*********///向cmd相应地址中写一个字节的数据void DS1302Write(uchar cmd, uint dat)//cmd:要写入的控制字,dat:要写入的数据{RST=0; //初始CE线置为0SCLK=0; //初始时钟线置为0RST=1; //初始CE置为1，传输开始DS1302WriteByte(cmd); //传输命令字，要写入的时间/日历地址DS1302WriteByte(dat); //写入要修改的时间/日期SCLK=1; //时钟线拉高RST=0; //读取结束，CE置为0，结束数据的传输}/*************初始化ds1302********///给1302写入日期和时钟的值void chushihuaDS1302(void){DS1302Write(0x8e,0x00);//写保护关DS1302Write(0x80,0x10); //初始秒DS1302Write(0x82,0x02);//初始分钟DS1302Write(0x84,0x15); //初始为24小时模式,初始时DS1302Write(0x86,0x01); //1日DS1302Write(0x88,0x08);//8月DS1302Write(0x8c,0x13);//2013年DS1302Write(0x8a,0x04);//星期4// DS1302Write(0x90,0x01); //充电//DS1302Write(0xc0,0xf0); //初始化一次标示//DS1302Write(0x8e,0x80);//写保护开}/************以下是1602的程序******************//******************************///向1602内写命令void write_order(uchar order){RS=0;P0=order;delayms(5);EN=1;delayms(5);EN=0;}/******************************///向1602内写数据void write_date(uchar date){RS=1;P0=date;delayms(5);EN=1;delayms(5);EN=0;}/******************************///lcd1602的初始化void chushihuaLCD1602(){ EN=0;write_order(0x38);write_order(0x0c);write_order(0x06);write_order(0x01);}/*************其他操作*****************/void gettime(){ uchar i,n;for(i=0,n=1;i<7,n<15;i++,n=n+2){ DateTime[i]=DS1302Read(0x80+n);delayus(1);}}void zhuanhuan(){ gettime();lcd1[5]=((DateTime[6]>>4)+0x30);lcd1[6]=((DateTime[6]&0x0f)+0x30);delayus(2);//年lcd1[14]=((DateTime[5]>>4)+0x30);lcd1[15]=((DateTime[5]&0x0f)+0x30);delayus(2);//周lcd1[11]=((DateTime[3]>>4)+0x30);lcd1[12]=((DateTime[3]&0x0f)+0x30);delayus(2);//日lcd1[8]=((DateTime[4]>>4)+0x30);lcd1[9]=((DateTime[4]&0x0f)+0x30);delayus(2);//月lcd2[5]=((DateTime[2]>>4)+0x30);lcd2[6]=((DateTime[2]&0x0f)+0x30);delayus(2);//时lcd2[8]=((DateTime[1]>>4)+0x30);lcd2[9]=((DateTime[1]&0x0f)+0x30);delayus(2);//分lcd2[11]=((DateTime[0]>>4)+0x30);lcd2[12]=((DateTime[0]&0x0f)+0x30);delayus(2);//秒if(DateTime[7]==DateTime[2] & DateTime[8]==DateTime[1]){led = 1;delayms(150);led = 0;}/**/}/***********************/void jianpan() //键盘调时{ uchar x2,address,max,min;int item;if(key1==0){ delayms(10);if(key1==0){ x1++;if(x1>=7) x1=1;switch(x1){ case 1: lcd2[15]='Y';x2=1;address=0x8c; max=99;min=0;break;//年case 2: lcd2[15]='M';x2=2;address=0x88; max=12;min=1;break;//月case 3: lcd2[15]='D';x2=3;address=0x86; max=31;min=1;break;//天case 4: lcd2[15]='H';x2=4;address=0x84; max=23;min=0;break;//时case 5: lcd2[15]='F';x2=5;address=0x82; max=59;min=0;break;//分case 6: lcd2[15]='W';x2=6;address=0x8A; max=7;min=1;break;//周}}while(!key1);}item=(DS1302Read(address+1)/16)*10 + (DS1302Read(address+1))%16;if(key2==0){ delayms(10);if(key2==0){ if(x2==1) {item++;}else if(x2==2) {item++;}else if(x2==3) {item++;}else if(x2==4) {item++;}else if(x2==5) {item++;}else if(x2==6) {item++;}}while(!key2);}if(key3==0){ delayms(10);if(key3==0){ if(x2==1) {item--;}else if(x2==2) {item--;}else if(x2==3) {item--;}else if(x2==4) {item--;}else if(x2==5) {item--;}else if(x2==6) {item--;}}while(!key3);}if(key4==0){ delayms(10);if(key4==0){ lcd2[15]=' ';x1=0;x2=0;}while(!key4);}//led=0;delayms(5000);led=1;if(item>max) item=min;if(item<min) item=max;DS1302Write(0x8e,0x00);//允许写操作delayms(10);DS1302Write(address,(item/10)*16+item%10); //写入DS1302 //转成BCD码delayms(20);DS1302Write(0x8e,0x80);//写保护,禁止写操作}void naozhong()//设定闹钟{ uchar da,xiao,i;if(key11==0){ delayms(10);if(key11==0){ x++;if(x>=4) x=1;switch(x){case 2: lcd2[13]='H';i=1;da=23;xiao=0;lcd2[14]=((hour>>4)+0x30);lcd2[15]=((hour&0x0f)+0x30);delayus(2);break;//时case 1: lcd2[13]='M';i=2;da=59;xiao=0;lcd2[14]=((minute>>4)+0x30);lcd2[15]=((minute&0x0f)+0x30);delayus(2);break;//分case 3: lcd2[13]=' ';lcd2[14]=' ';lcd2[15]=' ';x=0;i=0;break;}}while(!key11);}if(key22==0){ delayms(10);if(key22==0){ if(i==1){ hour=((hour/16)*10)+(hour%16);hour++;if(hour>da) hour=xiao;hour=(hour/10)*16+hour%10;lcd2[14]=((hour>>4)+0x30);lcd2[15]=((hour&0x0f)+0x30);delayus(2);}else if(i==2){ minute=((minute/16)*10)+(minute%16);minute++;if(minute>da) minute=xiao;minute=(minute/10)*16+minute%10;lcd2[14]=((minute>>4)+0x30);lcd2[15]=((minute&0x0f)+0x30);delayus(2);}}while(!key22);}if(key33==0){ delayms(10);if(key33==0){ if(i==1){ hour=((hour/16)*10)+(hour%16);hour--;if(hour<xiao) hour=da;hour=(hour/10)*16+hour%10;lcd2[14]=((hour>>4)+0x30);lcd2[15]=((hour&0x0f)+0x30);delayus(2);}else if(i==2){ minute=((minute/16)*10)+(minute%16);minute--;if(minute<xiao) minute=da;minute=(minute/10)*16+minute%10;lcd2[14]=((minute>>4)+0x30);lcd2[15]=((minute&0x0f)+0x30);delayus(2);}}while(!key33);}DateTime[7]=hour;DateTime[8]=minute;}/**/void wzd0() interrupt 0//外部中断0{jianpan();//}void wzd1() interrupt 2//外部中断1{naozhong();}void main(){uchar k;EA=1;EX0=1;IT0=1;PX0=1;EX1=1;IT1=1;PX1=0;RW=0;led=0;chushihuaLCD1602();if( (DS1302Read(0x81) & 0x80) ) chushihuaDS1302();//chushihuaDS1302();while(1){zhuanhuan();write_order(0x80);//lcd的第一行for(k=0;k<16;k++){ write_date(lcd1[k]);delayus(2);}write_order(0x80+0x40);//lcd的第二行for(k=0;k<16;k++){ write_date(lcd2[k]);delayus(2);}}}。
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实时时钟模块,1602显示
/******************* 说明:**************************将实时时钟数据通过LCD1602 显示基于51 单片机**************************************************/#include <reg52.h>#include <intrins.h>#define uchar unsigned char#define uint unsigned int uchar dis_time_buf[16]={0};//LCD1602 引脚定义// 采用8 位并行方式,DB0~DB7 连接至LCDDATA0~LCDDATA7sbit RS=P2A0;sbit RW=P2A1；sbit CS=P2A2;#define LCDDATA P0//DS1302 引脚定义sbit RST=P1A3；sbit IO=P1A2；sbit SCK=P1A1；//DS1302 地址定义#define ds1302_sec_add 0x80 // 秒数据地址#define ds1302_min_add 0x82 // 分数据地址#define ds1302_hr_add 0x84 // 时数据地址#define ds1302_date_add 0x86 // 日数据地址#define ds1302_month_add 0x88 // 月数据地址#define ds1302_day_add 0x8a // 星期数据地址#define ds1302_year_add 0x8c // 年数据地址#define ds1302_control_add 0x8e // 控制数据地址#define ds1302_charger_add 0x90#define ds1302_clkburst_add 0xbe// 初始时间定义uchar time_buf[8] = {0x20,0x10,0x06,0x01,0x23,0x59,0x55,0x02}；// 初始时间2010年6月1号23 点59 分55 秒星期二// 功能:延时 1 毫秒// 入口参数:x// 出口参数:无//说明：当晶振为12M时，j<112 ;当晶振为11.0592M时，j<122void Delay_xms（uint x）{uint i,j；for（i=0；i<x；i++）for（j=0；j<112；j++）；// 功能：12us 延时//STC89C52为1T单片机,即1个时钟/机器周期,速度为AT89C52的12倍void Delay_xus(uint t){for(;t>0;t--){_nop_();}}//控制LCD写时序void LCD_en_write(void){CS=1;Delay_xus(20);CS=0;Delay_xus(20);}// 写指令函数void Write_Instruction(uchar command){RS=0;RW=0;CS=1;LCDDATA=command;LCD_en_write();// 写入指令数据}// 写数据函数void Write_Data(uchar Wdata){RS=1;RW=0;CS=1;LCDDATA=Wdata;LCD_en_write();// 写入数据}// 字符显示初始地址设置void LCD_SET_XY(uchar X,uchar Y){uchar address;if(Y==0) address=0x80+X;//Y=0, 表示在第一行显示，地址基数为0x80elseaddress=0xc0+X;//Y 非 0 时，表时在第二行显示，地址基数为 0xC0 Write_Instruction(address);// 写指令，设置显示初始地址}//在第X 行Y 列开始显示 Wdata 所对应的单个字符 void LCD_write_char(uchar X,uchar Y,uchar Wdata){LCD_SET_XY(X,Y)写 地址Write_Data(Wdata);// 写入当前字符并显示}// 清屏函数 void LCD_clear(void){Write_Instruction(0x01); Delay_xms(5);}// 显示屏初始化函数 void LCD_init(void){Write_Instruction(0x38); // 8bit interface,2line,5*7dotsDelay_xms(5);Write_Instruction(0x38); Delay_xms(5);Write_Instruction(0x38);Write_Instruction(0x08); //关显示，不显光标，光标不闪烁 Write_Instruction(0x01); //清屏 Delay_xms(5);//Write_Instruction(0x05); //Write_Instruction(0x06);//Write_Instruction(0x07);Delay_xms(5); // 写一字符，整屏右移 // 写一字符，整屏显示不移动// 写一字符，整屏左移//Write_Instruction(0x0B); Write_Instruction(0x0C);//Write_Instruction(0x0D); //Write_Instruction(0x0E); //Write_Instruction(0x0F); } //DS1302 初始化函数 void ds1302_init(void){Write_Instruction(0x04); // 写一字符，整屏显示不移动 // 关闭显示（不显示字符，只有背光亮） // 开显示，光标、闪烁都关闭// 开显示，不显示光标，但光标闪烁 // 开显示，显示光标，但光标不闪烁}//向DS1302写入一字节数据void ds1302_write_byte(uchar addr, uchar d){uchar i; RST=1;// 启动 DS1302 总线// 写入目标地址： addraddr = addr & 0xFE; // 最低位置零，寄存器 0 位为 0 时写，为 1 时读 for (i = 0; i < 8; i ++) {if (addr & 0x01) {IO=1;}else {IO=0;}SCK=1; //产生时钟 SCK=0;addr = addr >> 1;}// 写入数据： dfor (i = 0; i < 8; i ++) {if (d & 0x01) {IO=1;}else {IO=0;}SCK=1; // 产生时钟 SCK=0; d = d >> 1;}RST=O;〃停止 DS1302 总线}//从DS1302读出一字节数据uchar ds1302_read_byte(uchar addr) {uchar i,temp; RST=1;// 启动 DS1302 总线// 写入目标地址： addr addr = addr | 0x01;// 最低位置高，寄存器 0 位为 0 时写，为 1 时读for (i = 0; i < 8; i ++) {RST=0; SCK=0;//RST 脚置低 //SCK 脚置低if (addr & 0x01) { IO=1;}else { IO=0;}SCK=1;SCK=0;addr = addr >> 1;}// 输出数据：tempfor (i = 0; i < 8; i ++) { temp = temp >> 1; if (IO) {temp |= 0x80;}else {temp &= 0x7F; }SCK=1;SCK=0;}RST=0;//停止DS1302 总线return temp;}//向DS302写入时钟数据void ds1302_write_time(void) {ds1302_write_byte(ds1302_control_add,0x00); // 关闭写保护ds1302_write_byte(ds1302_sec_add,0x80); // 暂停时钟//ds1302_write_byte(ds1302_charger_add,0xa9); // 涓流充电ds1302_write_byte(ds1302_year_add,time_buf[1]); // 年ds1302_write_byte(ds1302_month_add,time_buf[2]); //月ds1302_write_byte(ds1302_date_add,time_buf[3]); // 日ds1302_write_byte(ds1302_hr_add,time_buf[4]); // 时ds1302_write_byte(ds1302_min_add,time_buf[5]); // 分ds1302_write_byte(ds1302_sec_add,time_buf[6]); // 秒ds1302_write_byte(ds1302_day_add,time_buf[7]); // 周ds1302_write_byte(ds1302_control_add,0x80); //打开写保护}//从DS302读出时钟数据void ds1302_read_time(void){time_buf[1]=ds1302_read_byte(ds1302_year_add); // 年time_buf[2]=ds1302_read_byte(ds1302_month_add); // 月time_buf[3]=ds1302_read_byte(ds1302_date_add); // 日time_buf[4]=ds1302_read_byte(ds1302_hr_add); // 时time_buf[5]=ds1302_read_byte(ds1302_min_add); // 分time_buf[6]=(ds1302_read_byte(ds1302_sec_add))&0x7f;// 秒，屏蔽秒的第7 位，避免超出59time_buf[7]=ds1302_read_byte(ds1302_day_add); // 周}void Display(void){LCD_write_char(3,0,dis_time_buf[0]+'0');LCD_write_char(4,0,dis_time_buf[1]+'0');LCD_write_char(5,0,dis_time_buf[2]+'0');LCD_write_char(6,0,dis_time_buf[3]+'0');LCD_write_char(7,0,'/');LCD_write_char(8,0,dis_time_buf[4]+'0');LCD_write_char(9,0,dis_time_buf[5]+'0');LCD_write_char(10,0,'/');LCD_write_char(11,0,dis_time_buf[6]+'0');LCD_write_char(12,0,dis_time_buf[7]+'0');LCD_write_char(15,0,dis_time_buf[14]+'0'); // 第 2 行显示LCD_write_char(3,1,dis_time_buf[8]+'0');LCD_write_char(4,1,dis_time_buf[9]+'0');LCD_write_char(5,1,':');LCD_write_char(6,1,dis_time_buf[10]+'0');LCD_write_char(7,1,dis_time_buf[11]+'0');LCD_write_char(8,1,':');LCD_write_char(9,1,dis_time_buf[12]+'0');LCD_write_char(10,1,dis_time_buf[13]+'0');}// 定时器中断函数void Timer2() interrupt 5// 定时器 2 是 5 号中断{static uchar t;TF2=0;t++;if(t==4) // 间隔200ms(50ms*4) 读取一次时间{t=0;ds1302_read_time(); // 读取时间dis_time_buf[0]=(time_buf[0]>>4); // 年dis_time_buf[1]=(time_buf[0]&0x0f);dis_time_buf[2]=(time_buf[1]>>4);dis_time_buf[3]=(time_buf[1]&0x0f);dis_time_buf[4]=(time_buf[2]>>4); // 月dis_time_buf[5]=(time_buf[2]&0x0f);dis_time_buf[6]=(time_buf[3]>>4); // 日dis_time_buf[7]=(time_buf[3]&0x0f);dis_time_buf[14]=(time_buf[7]&0x07); // 星期// 第 2 行显示dis_time_buf[8]=(time_buf[4]>>4); // 时dis_time_buf[9]=(time_buf[4]&0x0f);dis_time_buf[10]=(time_buf[5]>>4); // 分dis_time_buf[11]=(time_buf[5]&0x0f);dis_time_buf[12]=(time_buf[6]>>4); // 秒dis_time_buf[13]=(time_buf[6]&0x0f);}}// 定时器 2 初始化void Init_timer2(void){RCAP2H=0x3c;〃赋T2初始值0x3cb0,溢出20次为1秒，每次溢出时间为50ms RCAP2L=0xb0;TR2=1; //启动定时器 2ET2=1; // 打开定时器 2 中断EA=1; // 打开总中断}// 主函数void main(void){Delay_xms(50);// 等待系统稳定LCD_init(); //LCD 初始化LCD_clear(); // 清屏ds1302_init(); //DS1302 初始化Delay_xms(10);ds1302_write_time(); // 写入初始值Init_timer2(); // 定时器 2 初始化while(1){Display();}。
基于51单片机DS1302LCD1602数字时钟显示
#include <intrins.h>
#include <string.h>
#define uint unsigned int
#define uchar unsigned char
uchar code table[]="I LIKE MCU!";
sbit RS=P2^0;
dispaly_string(0x00,lcd_buffer1);
dispaly_string(0x40,lcd_buffer2);
}
}
delay(5);
}
void write_a_byte_tods1302(uchar x)
{
uchar i;
for(i=0;i<8;i++)
{
IO=x&0x01;
sclk=1;
sclk=0;
x=x>>1;
}
}
uchar get_a_byte_fromds1302()
{
uchar i,b=0x00;
for(i=0;i<8;i++)
uchar lcd_buffer2[]={"TIME 00:00:00 "};
uchar datetime[7];
void delay(uchar ms)
{
uchar i;
while(ms--)
for(i=0;i<120;i++);
}
//忙检测
uchar busy()
{
uchar test;
RW=1;
{
51单片机实现基于DS1302_1602_18B20的多功能电子时钟_带测温功能
#include<reg51.h>#define uchar unsigned char#define uint unsigned int/*------------------寄存器地址定义------------*/#define WRITE_SECOND 0x80#define WRITE_MINUTE 0x82#define WRITE_HOUR 0x84#define WRITE_DAY 0x86#define WRITE_MONTH 0x88#define WRITE_YEAR 0x8C#define WRITE_PROTECT 0x8E#define WRITE_WEEK 0x8A#define WRITE_CURRENT 0x90#define READ_SECOND 0x81#define READ_MINUTE 0x83#define READ_HOUR 0x85#define READ_DAY 0x87#define READ_MONTH 0x89#define READ_WEEK 0x8B#define READ_YEAR 0x8Dsbit RST=P3^5; //DS1302片选sbit DIO=P3^4; //DS1302数据信号sbit SCLK=P3^6; //DS1302时钟信号sbit ACC7=ACC^7;sbit ACC0=ACC^0;unsigned char count;sbit beep=P1^4;void INITIAL_1302();unsigned char READ_1302(unsigned char addr);void WRITE_1302(unsigned char addr,unsigned char date); sbit LCD_E=P2^7; //液晶使能端sbit LCD_RS=P2^6; //液晶数据命令选择端sbit LCD_RW=P2^5; //液晶读写选择端sbit key0=P3^2; //功能键sbit key1=P3^3; //增大键sbit key2=P3^4; //减小键sbit DQ=P3^7; //18b20温度输入输出端char hour,minute,second,week,day,month,year,tem; unsigned char num,flag;unsigned char str1[]=" 20 - - ";unsigned char str2[]=" : : C";void delay(unsigned char z);void LCD_WRITE_COM(unsigned char com);void LCD_WRITE_DA TA(unsigned char date);void LCD_WRITE_SFM(unsigned char addr,unsigned char date);void LCD_WRITE_NYR(unsigned char addr,unsigned char date);void LCD_WRITE_WEEK(unsigned char week);void LCD_INITIAL();void LCD_WRITE_TEMP(uchar addr,uchar temp);void keyscan();void INITIAL_TEMER0();uchar TMPH ,TMPL;void w1602c(uchar com);void w1602d(uchar data01);void delay2(uint ms);void delay3(uint us);uchar resert(void);uchar read_byte();void write_byte(uchar val);uint get_temp();void display();void delay3(uint us); //18b20uchar resert(void); //18b20uchar read_byte(); //18b20void write_byte(uchar val); //18b20uint get_temp(); //18b20void main(){LCD_INITIAL(); //液晶初始化INITIAL_1302(); //DS1302初始化INITIAL_TEMER0(); //定时器初始化while(1){keyscan(); //按键扫描if(flag==0) //当标志位为0，允许读取DS1302数据，将数据送入液晶显示{second=READ_1302(0x81);LCD_WRITE_SFM(10,second);minute=READ_1302(0x83);LCD_WRITE_SFM(7,minute);hour=READ_1302(0x85);LCD_WRITE_SFM(4,hour);week=READ_1302(0x8b);LCD_WRITE_WEEK(week);day=READ_1302(0x87);LCD_WRITE_NYR(9,day);month=READ_1302(0x89);LCD_WRITE_NYR(6,month);year=READ_1302(0x8d);LCD_WRITE_NYR(3,year);tem=get_temp();LCD_WRITE_TEMP(13,tem);}}}/**********************1602BU份******************************************************/void delay(unsigned char z) //1602de延时函数{unsigned char x,y;for(x=z;x>0;x--)for(y=110;y>0;y--);}void LCD_WRITE_COM(unsigned char com){LCD_RS=0;LCD_RW=0;LCD_E=1;P0=com;delay(5);LCD_E=0;}void LCD_WRITE_DA TA(unsigned char date){LCD_RS=1;LCD_RW=0;LCD_E=1;P0=date;delay(5);LCD_E=0;}void LCD_WRITE_SFM(unsigned char addr,unsigned char date) {unsigned char shi,ge;shi=date/10;ge=date%10;LCD_WRITE_COM(0x80+0x40+addr);LCD_WRITE_DATA(0x30+shi);LCD_WRITE_DATA(0x30+ge);}void LCD_WRITE_NYR(unsigned char addr,unsigned char date) {char shi,ge;shi=date/10;ge=date%10;LCD_WRITE_COM(0x80+addr);LCD_WRITE_DATA(0x30+shi);LCD_WRITE_DATA(0x30+ge);}void LCD_WRITE_WEEK(unsigned char week){LCD_WRITE_COM(0x80+12);switch(week){case 1: LCD_WRITE_DA TA('M');delay(5);LCD_WRITE_DATA('O');delay(5);;LCD_WRITE_DATA('N');break;case 2: LCD_WRITE_DA TA('T');delay(5);LCD_WRITE_DATA('U');delay(5);LCD_WRITE_DATA('E');break;case 3: LCD_WRITE_DA TA('W');delay(5);LCD_WRITE_DATA('E');delay(5);LCD_WRITE_DATA('D');break;case 4: LCD_WRITE_DA TA('T');delay(5);LCD_WRITE_DATA('H');delay(5);LCD_WRITE_DATA('U');break;case 5: LCD_WRITE_DA TA('F');delay(5);LCD_WRITE_DATA('R');delay(5);LCD_WRITE_DATA('I');break;case 6: LCD_WRITE_DA TA('S');delay(5);LCD_WRITE_DATA('A');delay(5);LCD_WRITE_DATA('T');break;case 7: LCD_WRITE_DA TA('S');delay(5);LCD_WRITE_DATA('U');delay(5);LCD_WRITE_DATA('N');break;}}void LCD_WRITE_TEMP(uchar addr,uchar temp){char shi,ge;shi=temp/10;ge=temp%10;LCD_WRITE_COM(0x80+0x40+addr);LCD_WRITE_DATA(0x30+shi);LCD_WRITE_DATA(0x30+ge);}void LCD_INITIAL(){unsigned char i;LCD_WRITE_COM(0x38);LCD_WRITE_COM(0x0c);LCD_WRITE_COM(0x06); //经本人试验证明1602初始化不清屏也可实现LCD_WRITE_COM(0x80);for(i=0;i<16;i++){LCD_WRITE_DATA(str1[i]);delay(5);}LCD_WRITE_COM(0x80+0x40);//液晶第二行显示for(i=0;i<16;i++){LCD_WRITE_DATA(str2[i]);delay(5);}}/***************************1302部分***************************************************/void WRITE_1302(unsigned char addr,unsigned char date) {unsigned char i;RST=0;SCLK=0;RST=1;for(i=8;i>0;i--){SCLK=0;ACC=addr;DIO=ACC0;addr>>=1;SCLK=1;}for(i=8;i>0;i--){SCLK=0;ACC=date;DIO=ACC0;date>>=1;SCLK=1;}RST=0;}unsigned char READ_1302(unsigned char addr){unsigned char i,date1,date2;RST=0;SCLK=0;RST=1;for(i=8;i>0;i--){SCLK=0;ACC=addr;DIO=ACC0;addr>>=1;SCLK=1;}for(i=8;i>0;i--){ACC7=DIO;SCLK=1;ACC>>=1;SCLK=0;}RST=0;date1=ACC;date2=date1/16;date1=date1%16;date1=date1+date2*10;return(date1) ;}void INITIAL_1302(){WRITE_1302(WRITE_SECOND,READ_1302(READ_SECOND)&0x7f); //启动DS1302}/**************************键盘扫描部分***************************************************/void keyscan(){if(key0==0)//确认功能键按下{delay(20);if(key0==0)//去抖{while(!key0);//释放num++;switch(num){case 1: flag=1; //修改时间，禁止从DS1302读数据TR0=0; //定时器关LCD_WRITE_COM(0x0f); //光标开始闪烁LCD_WRITE_COM(0x80+3);//第一次按下，光标定位到年位置break;case 2: LCD_WRITE_COM(0x80+6);//第二次按下，光标定位到月位置break;case 3: LCD_WRITE_COM(0x80+9);//第三次按下，光标定位到日位置break;case 4: LCD_WRITE_COM(0x80+12);//第四次按下，光标定位到星期位置break;case 5: LCD_WRITE_COM(0x80+0x40+4);//第五次按下，光标定位到时位置break;case 6: LCD_WRITE_COM(0x80+0x40+7);//第六次按下，光标定位到分位置break;case 7: LCD_WRITE_COM(0x80+0x40+10);//第七次按下，光标定位到秒位置break;case 8: num=0;//第八次按下，记录清零LCD_WRITE_COM(0x0c);//不显示光标WRITE_1302(WRITE_PROTECT,0x00); //允许写操作WRITE_1302(0x80,(second/10*16)+second%10);//将调节后的秒写入DS1302WRITE_1302(0x82,(minute/10*16)+minute%10);//将调节后的分写入DS1302WRITE_1302(0x84,(hour/10*16)+hour%10);//将调节后的时写入DS1302WRITE_1302(0x8a,(week/10*16)+week%10);//将调节后的星期写入DS1302WRITE_1302(0x86,(day/10*16)+day%10);//将调节后的日写入DS1302WRITE_1302(0x88,(month/10*16)+month%10);//将调节后的月写入DS1302WRITE_1302(0x8c,(year/10*16)+year%10);//将调节后的年写入DS1302WRITE_1302(WRITE_PROTECT,0x80); //开写保护flag=0; //时间修改完毕，允许液晶从DS1302读数据TR0=1;break;}}}if(num!=0){if(key1==0)//确认增大键按下{delay(20);if(key1==0)//增大键确实按下{while(!key1);switch(num){case 1: year++;//调节年if(year==100)year=0;LCD_WRITE_NYR(3,year);//将调节后的年送入液晶显示LCD_WRITE_COM(0x80+3);//光标回到指定处break;case 2: month++;//调节月if(month==13)month=0;LCD_WRITE_NYR(6,month);//将调节后的月送入液晶显示LCD_WRITE_COM(0x80+6);//光标回到指定处break;case 3: day++;//调节日if(day==32)day=0;LCD_WRITE_NYR(9,day);//将调节后的日送入液晶显示LCD_WRITE_COM(0x80+9);//光标回到指定处break;case 4: week++;if(week==8)week=0;LCD_WRITE_WEEK(week);//将调节后的星期送入液晶显示LCD_WRITE_COM(0x80+12);//光标回到指定处break;case 5: hour++;if(hour==24)hour=0;LCD_WRITE_SFM(4,hour);//将调节后的小时送入液晶显示LCD_WRITE_COM(0x80+0x40+4);//光标回到指定处break;case 6: minute++;if(minute==60)minute=0;LCD_WRITE_SFM(7,minute);//将调节后的分送入液晶显示LCD_WRITE_COM(0x80+0x40+7);//光标回到指定处break;case 7: second++;if(second==60)second=0;LCD_WRITE_SFM(10,second);//将调节后的秒送入液晶显示LCD_WRITE_COM(0x80+0x40+10);//光标回到指定处break;default:break;}}}if(key2==0)//确认减小键按下{delay(20);if(key2==0)//减小键确实按下{while(!key2);switch(num){case 1: year--;//调节年if(year==-1)year=99;LCD_WRITE_NYR(3,year);LCD_WRITE_COM(0x80+3);break;case 2: month--;//调节月if(month==-1)month=12;LCD_WRITE_NYR(6,month);LCD_WRITE_COM(0x80+6);break;case 3: day--;//调节日if(day==-1)day=31;LCD_WRITE_NYR(9,day);LCD_WRITE_COM(0x80+9);break;case 4: week--;//调节星期if(week==0)week=7;LCD_WRITE_WEEK(week);LCD_WRITE_COM(0x80+12);break;case 5: hour--;//调节时if(hour==-1)hour=23;LCD_WRITE_SFM(4,hour);LCD_WRITE_COM(0x80+0x40+4);break;case 6: minute--;//调节分if(minute==-1)minute=59;LCD_WRITE_SFM(7,minute);LCD_WRITE_COM(0x80+0x40+7);break;case 7: second--;//调节秒if(second==-1)second=59;LCD_WRITE_SFM(10,second);LCD_WRITE_COM(0x80+0x40+10);break;default:break;}}}}}/*******************************蜂鸣器部分******************************************//*-----------定时器0初始化-------------------------*/void INITIAL_TEMER0(){TMOD=0x01;TH0=(65536-20000)/256;TL0=(65536-20000)%256; //晶振频率12MHZ 定时20ms作右TR0=1;EA=1;ET0=1;}/*-------------------------------------------*/void timer0()interrupt 1{TH0=(65536-20000)/256;TL0=(65536-20000)%256; //重装count++;if(count==50) //1秒到{count=0;beep=0; //蜂鸣器响delay(5);beep=1; //蜂鸣器灭}if(tem>=30){beep=0;}}/*****************************18b20部分*********************************************888*/void delay3(uint us){uint s;for(s=0;s<us;s++);}uchar resert(void){uchar ready;DQ=0;delay3(32) ;DQ=1;delay3(3);ready=DQ;delay3(25);return ready;}uchar read_byte(){uchar i,j;uchar value=0;for(i=0;i<8;i++){DQ=0;DQ=1;for(j=0;j<3;j++);if(DQ){value|=0x01<<i;}delay3(6) ;}return value;}void write_byte(uchar val) {uchar i,temp;for(i=0;i<8;i++){temp=val>>i;temp=temp&0x01;DQ=0;if(temp==1)DQ=1;delay3(5);DQ=1;}DQ=1;}uint get_temp(){float f_temp;uint temp;P2=0x00;resert();delay3(50);write_byte(0xcc);write_byte(0x44);resert();write_byte(0xcc);write_byte(0xbe);TMPL = read_byte();TMPH = read_byte();temp = TMPH;temp <<= 8;TMPL=TMPL&0xf0;temp = temp | TMPL;f_temp=temp*0.0625;temp=f_temp;return temp;}。
DS1302时钟芯片与液晶1602程序
#include<reg52.h>#define wri_sec 0x80#define wri_min 0x82#define wri_hour 0x84#define wri_day 0x86#define wri_mon 0x88#define wri_week 0x8a#define wri_year 0x8c#define re_sec 0x81#define re_min 0x83#define re_hour 0x85#define re_day 0x87#define re_mon 0x89#define re_week 0x8b#define re_year 0x8d#define wri_pro 0x8e#define uchar unsigned char#define uint unsigned intsbit SCLK=P3^5;sbit DIO=P3^6;sbit CE=P3^7;sbit lcden=P1^0;sbit lcdrs=P1^2;sbit lcdrw=P1^1;uchar weeks[7][3]={"Mon","Tue","Wed","Thu","Fri","Sat","Sun"}; static uchar datatime[7]={0};void delay(uint z){uint x,y;for(x=z;x>0;x--)for(y=110;y>0;y--);}void write1302(uchar addr,dat){uchar i,temp;CE=0;SCLK=0;CE=1;for(i=0;i<8;i++){SCLK=0;temp=addr;DIO=(bit)(temp&0x01);addr>>=1;SCLK=1;}for(i=0;i<8;i++){SCLK=0;temp=dat;DIO=(bit)(temp&0x01);dat>>=1;SCLK=1;}CE=0;}uchar read1302(uchar addr){uchar i,temp, dat1,dat2;dat1=0;CE=0;SCLK=0;CE=1;for(i=8;i>0;i--){SCLK=0;temp=addr;DIO=(bit)(temp&0x01);addr>>=1;SCLK=1;}SCLK=0;for(i=8;i>0;i--){DIO=1;dat1>>=1;if(DIO) dat1|=0x80;SCLK=1;delay(5);SCLK=0;}dat2=dat1/16;dat1=dat1%16;dat1=dat2*10+dat1;return(dat1);}void init1302() //初始化{write1302(wri_pro,0x00); //允许写write1302(wri_sec,0x12);// write1302(wri_min,0x23);// write1302(wri_hour,0x16);// write1302(wri_day,0x17);// write1302(wri_mon,0x11);// write1302(wri_year,0x10);// write1302(wri_week,0x03);write1302(wri_pro,0x80); //禁止写}void write_com(uchar com) //lcd写命令{lcdrw=0;lcdrs=0;P0=com;delay(5);lcden=1;delay(5);lcden=0;}void write_data(uchar date) //lcd{lcdrw=0;lcdrs=1;P0=date;delay(5);lcden=1;delay(5);lcden=0;}void init_lcd() //lcd初始化{uint dat1,dat2;uint i;lcden=0;write_com(0x38);write_com(0x0f);write_com(0x06);write_com(0x01);write_com(0x81);write_data('2');delay(20);write_data('0');delay(20);write1302(wri_pro,0x00);datatime[6]=read1302(re_year);dat2=datatime[6]/10;dat1=datatime[6]%10;write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);write_data(45);delay(20);datatime[5]=read1302(re_mon);dat2=datatime[5]/10;dat1=datatime[5]%10;write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);write_data(45);delay(20);datatime[4]=read1302(re_day);dat2=datatime[4]/10;dat1=datatime[4]%10;write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);write_data(32);delay(20);datatime[3]=read1302(re_week);for (i=0;i<3;i++){write_data(weeks[datatime[3]-1][i]);delay(20);}write_com(0x80+0x43);datatime[2]=read1302(re_hour);dat2=datatime[2]/10;dat1=datatime[2]%10;write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);write_data(58);delay(20);datatime[1]=read1302(re_min);dat2=datatime[1]/10;dat1=datatime[1]%10;write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);write_data(39);delay(20);datatime[0]=read1302(re_sec);dat2=datatime[0]/10;dat1=datatime[0]%10;write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);write_data(34);delay(20);write1302(wri_pro,0x80);}void refresh() //更新时间{uchar sec,min,hou,day,mon,yea,wee,dat1,dat2;uint i;write1302(wri_pro,0x00);sec=read1302(re_sec);if(sec!=datatime[0]){datatime[0]=sec;dat2=datatime[0]/10;dat1=datatime[0]%10;write_com(0x80+0x49);delay(50);write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);if(!sec){min=read1302(re_min);datatime[1]=min;dat2=datatime[1]/10;dat1=datatime[1]%10;write_com(0x80+0x46);delay(5);write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);if(!min){hou=read1302(re_hour);datatime[2]=hou;dat2=datatime[2]/10;dat1=datatime[2]%10;write_com(0x80+0x43);delay(5);write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);if(!hou){wee=read1302(re_week);datatime[3]=wee;write_com(0x80+0x0c);delay(5);for (i=0;i<3;i++){write_data(weeks[datatime[3]-1][i]);delay(20);}day=read1302(re_day);datatime[4]=day;dat2=datatime[4]/10;dat1=datatime[4]%10;write_com(0x80+0x09);delay(5);write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);if(day==1){mon=read1302(re_mon);datatime[5]=mon;dat2=datatime[5]/10;dat1=datatime[5]%10;write_com(0x80+0x06);delay(5);write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);if(mon==1){yea=read1302(re_year);datatime[6]=yea;dat2=datatime[6]/10;dat1=datatime[6]%10;write_com(0x80+0x03);delay(5);write_data(48+dat2);delay(20);write_data(48+dat1);delay(20);}}}}}}write1302(wri_pro,0x80);}void readkey() //查键{uchar key,n,dat1,dat2;uint i;key=P2;delay(10);if(key==0xfe){key=P2;delay(20);n=1;while(1){if(n==1){n=0;write_com(0x83); //修改年write1302(wri_pro,0x00);dat1=read1302(re_year);dat2=dat1/10;dat1=dat1%10;key=P2;delay(10);while(key!=0xf7){delay(200);switch(key){case 0xfd:if(dat2==9) dat2=0;else dat2++;write_data(48+dat2);delay(20);write_com(0x83);break;case 0xfb: if(dat2==0) dat2=9;else dat2--;write_data(48+dat2);delay(20);write_com(0x83);break;default: break;}key=P2;delay(10);}delay(200);write_com(0x84);key=P2;delay(20);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat1==9) dat1=0;else dat1++;write_data(48+dat1);delay(20);write_com(0x84);break;case 0xfb: if(dat1==0) dat1=9;else dat1--;write_data(48+dat1);delay(20);write_com(0x84);break;default: break;}key=P2;delay(10);}dat1=(dat2<<4)|dat1;write1302(wri_year,dat1);delay(200);write_com(0x86); //修改月dat1=read1302(re_mon);dat2=dat1/10;dat1=dat1%10;key=P2;delay(10);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat2==1) dat2=0;else dat2++;write_data(48+dat2);delay(20);write_com(0x86);break;case 0xfb: if(dat2==0) dat2=1;else dat2--;write_data(48+dat2);delay(20);write_com(0x86);break;default: break;}key=P2;delay(10);}write_com(0x87);delay(200);key=P2;delay(10);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat1==9) dat1=0;else dat1++;write_data(48+dat1);delay(20);write_com(0x87);break;case 0xfb: if(dat1==0) dat1=9;else dat1--;write_data(48+dat1);delay(20);write_com(0x87);break;default: break;}key=P2;delay(10);}dat1=(dat2<<4)|dat1;write1302(wri_mon,dat1);delay(200);write_com(0x89); //修改日dat1=read1302(re_day);dat2=dat1/10;dat1=dat1%10;key=P2;delay(10);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat2==3) dat2=0;else dat2++;write_data(48+dat2);delay(20);write_com(0x89);break;case 0xfb: if(dat2==0) dat2=3;else dat2--;write_data(48+dat2);delay(20);write_com(0x89);break;default: break;}key=P2;delay(10);}write_com(0x8a);delay(200);key=P2;delay(10);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat1==9) dat1=0;else dat1++;write_data(48+dat1);delay(20);write_com(0x8a);break;case 0xfb: if(dat1==0) dat1=9;else dat1--;write_data(48+dat1);delay(20);write_com(0x8a);break;default: break;}key=P2;delay(10);}dat1=(dat2<<4)|dat1;write1302(wri_day,dat1);delay(200);write_com(0x8c); //修改星期dat1=read1302(re_week);key=P2;delay(20);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat1==7) dat1=1;else dat1++;for(i=0;i<3;i++){write_data(weeks[dat1-1][i]);delay(20);}write_com(0x8c);break;case 0xfb: if(dat1==1) dat1=7;else dat1--;for(i=0;i<3;i++){write_data(weeks[dat1-1][i]);delay(20);}write_com(0x8c);break;}key=P2;delay(10);}write1302(wri_week,dat1);delay(200);write_com(0x80+0x43); //修改时dat1=read1302(re_hour);dat2=dat1/10;dat1=dat1%10;key=P2;delay(10);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat2==2) dat2=0;else dat2++;write_data(48+dat2);delay(20);write_com(0x80+0x43);break;case 0xfb: if(dat2==0) dat2=2;else dat2--;write_data(48+dat2);delay(20);write_com(0x80+0x43);break;default: break;}key=P2;delay(10);}write_com(0x80+0x44);delay(200);key=P2;delay(20);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat1==9) dat1=0;else dat1++;write_data(48+dat1);delay(20);write_com(0x80+0x44);break;case 0xfb: if(dat1==0) dat1=9;else dat1--;write_data(48+dat1);delay(20);write_com(0x80+0x44);break;default: break;}key=P2;delay(10);}dat1=(dat2<<4)|dat1;write1302(wri_hour,dat1);delay(250);write_com(0x80+0x46); //修改分dat1=read1302(re_min);dat2=dat1/10;dat1=dat1%10;key=P2;delay(10);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat2==5) dat2=0;else dat2++;write_data(48+dat2);delay(20);write_com(0x80+0x46);break;case 0xfb: if(dat2==0) dat2=5;else dat2--;write_data(48+dat2);delay(20);write_com(0x80+0x46);break;default: break;}key=P2;delay(10);}write_com(0x80+0x47);delay(200);key=P2;delay(20);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat1==9) dat1=0;else dat1++;write_data(48+dat1);delay(20);write_com(0x80+0x47);break;case 0xfb: if(dat1==0) dat1=9;else dat1--;write_data(48+dat1);delay(20);write_com(0x80+0x47);break;default: break;}key=P2;delay(10);}dat1=(dat2<<4)|dat1;write1302(wri_min,dat1);delay(250);write_com(0x80+0x49); //修改秒dat1=read1302(re_sec);dat2=dat1/10;dat1=dat1%10;key=P2;delay(10);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat2==5) dat2=0;else dat2++;write_data(48+dat2);delay(20);write_com(0x80+0x49);break;case 0xfb: if(dat2==0) dat2=5;else dat2--;write_data(48+dat2);delay(20);write_com(0x80+0x49);break;default: break;}key=P2;delay(10);}write_com(0x80+0x4a);delay(200);key=P2;delay(20);while(key!=0xf7){delay(200);switch(key){case 0xfd: if(dat1==9) dat1=0;else dat1++;write_data(48+dat1);delay(20);write_com(0x80+0x4a);break;case 0xfb: if(dat1==0) dat1=9;else dat1--;write_data(48+dat1);delay(20);write_com(0x80+0x4a);break;default: break;}key=P2;delay(10);}dat1=(dat2<<4)|dat1;write1302(wri_sec,dat1);write_com(0x80+0x4d);write1302(wri_pro,0x80);}break;}}}void main(){init1302();init_lcd();while(1){refresh();readkey();write_com(0x80+0x50);}}。
电子时钟程序DS1302时钟芯片lcd1602
date=Read1302();
SCLK=1;
REST=0;
return date;
}
void IntDS1302(void) //DS1302初始化
{
unsigned char flag;
flag= ReadSet1302(0x81);
/*液晶忙检测*/
bit BusyTest(void)
{
bit result;
RS=0;
RW=1;
E=1;
_nop_();
_nop_();
_nop_();
result=BF;
_nop_();
_nop_();
_nop_();
E=0;
return result;
delay1ms(1);
Write_com(0x0c);
delay1ms(1);
Write_com(0x01);
}
void displaymainpart(void)//显示液晶主要部分（不变化部分）
{
Write_Address(0x01);
delay1ms(1);
{
unsigned char i,j;
i=day/10;
j=day%10;
Write_Address(0x0E);
Write_Date(dit[j]);
delay1ms(1);
}
void display_Month(unsigned char month) //在液晶上显示月
_nop_();
E=1;
_nop_();
基于51单片机DS1302LCD1602数字时钟显示
dispaly_string(0x40,lcd_buffer2);
}
}
sbit RW=P2^1;
sbit EN=P2^2;
sbit IO=P1^0;
sbit sclk=P1^1;
sbit rst=P1^2;
uchar *week[]={"SUN","****","MON","TUS","WEN","THU","FRI","SAT"};
uchar lcd_buffer1[]={"DATE 00-00-00 "};
delay(5);
}
void write_a_byte_tods1302(uchar x)
{
uchar i;
for(i=0;i<8;i++)
{
IO=x&0x01;
sclk=1;
sclk=0;
x=x>>1;
}
}
uchar get_a_byte_fromds1302()
{
uchar i,b=0x00;
for(i=0;i<8;i++)
a[1]=d%10+'0';
}
void main()
{
init();
while(1)
{
gettime();
zhuanhuan(datetime[6],lcd_buffer1+5);
zhuanhuan(datetime[4],lcd_buffer1+8);
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==================主程序================= #include <reg51.h>。
#include "ds1302.h"#include "LCD1602.h"void change();uchar times[9];uchar date[9];main(){LCD_init();//LCD初始化init_1302(time_1302);gotoxy(1,1);LCD_display("Time:");gotoxy(1,2);LCD_display("Date:");times[8]='\0';//date[8]='\0';while(1){get_1302(time_1302);change();gotoxy(7,1);LCD_display(times);gotoxy(7,2);LCD_display(date);}}/*=========================== 转换子程序===========================*/void change(){// 时间的转换times[0]=time_1302[2]/10+'0';times[1]=time_1302[2]%10+'0';times[2]=':';times[3]=time_1302[1]/10+'0';times[4]=time_1302[1]%10+'0';times[5]=':';times[6]=time_1302[0]/10+'0';times[7]=time_1302[0]%10+'0';// 日期的转换date[0]=time_1302[6]/10+'0';date[1]=time_1302[6]%10+'0';date[2]='-';date[3]=time_1302[4]/10+'0';date[4]=time_1302[4]%10+'0';date[5]='-';date[6]=time_1302[3]/10+'0';date[7]=time_1302[3]%10+'0';}======================================================DS1302驱动程序=============#define uchar unsigned charuchar time_1302[7]={0x00,0x00,0x00,0x03,0x07,0x03,0x08};//设置时间初始值数组// 秒分时号月份星期年sbit T_IO=P1^0; //与硬件相关的连线clk为DS1302的时钟信号线sbit T_CLK=P1^1; //DAT为DS1302的I/O数据线sbit T_RST=P1^2; //RST为DS1302的RST信号线uchar bdata datbyte;sbit datbyte0=datbyte^0;sbit datbyte7=datbyte^7;void get_1302(uchar time[]);void write_ds1302(uchar dat);uchar r_1302(uchar add);void w_1302(uchar add,uchar dat);uchar read_ds1302(void);void init_1302(uchar *time);/*==========================================D S 1 3 0 2 初始化===========================================*/void init_1302(uchar *time){uchar i, add;//uchar time_bcd[7];add=0x80;//0写入，1读出w_1302(0x8e,0x00);for(i=0;i<7;i++){w_1302(add,*time);add+=2;time++;}w_1302(0x8e,0x80);}//===========================// 读取当前时间//===========================void get_1302(uchar time[]){uchar i;uchar add=0x81;w_1302(0x8e,0x00);for(i=0;i<7;i++){time[i]=r_1302(add);add+=2;}w_1302(0x8e,0x80);}/*================================= DS1302写入一个字节（上升沿有效）=================================*/void write_ds1302(uchar dat){uchar i;datbyte=dat;for(i=0;i<8;i++){T_IO=datbyte0;T_CLK=1;T_CLK=0;datbyte=datbyte>>1;}}/*======================================= DS1302读取一个字节（下降沿有效）=======================================*/uchar read_ds1302(void){uchar i;for(i=0;i<8;i++){datbyte=datbyte>>1;datbyte7=T_IO;T_CLK=1;T_CLK=0;}return(datbyte);}/*========================================= 指定位置读取数据=========================================*/uchar r_1302(uchar add){uchar temp,dat1,dat2;T_RST=0;T_CLK=0;T_RST=1;write_ds1302(add);temp=read_ds1302();T_CLK=1;T_RST=0;dat1=temp/16;dat2=temp%16;temp=dat1*10+dat2;return(temp);}/*========================================== 指定位置写入数据==========================================*/void w_1302(uchar add,uchar dat){T_RST=0;T_CLK=0;T_RST=1;write_ds1302(add);write_ds1302(dat/10<<4|dat%10);T_CLK=1;T_RST=0;}=========================================== =============LCD1602驱动程序================#define LCD_DB P0//定义LCD的数据端口sbit LCD_RS=P2^0;sbit LCD_RW=P2^1;sbit LCD_E=P2^2;#define uchar unsigned char#define uint unsigned int//===========延时子函数======================== void delay_lcd(uint x){uint i,j;for(i=x;i>0;i--)for(j=0;j<2;j++);}//==================写指令函数================= void LCD_write_command(uchar command){LCD_DB=command;LCD_RS=0;//指令LCD_RW=0;//写入LCD_E=1;LCD_E=0;delay_lcd(1);//等待执行完毕。
}//===================写数据函数=================void LCD_write_data(uchar dat){LCD_DB=dat;LCD_RS=1;//数据寄存器LCD_RW=0;//写入数据LCD_E=1;LCD_E=0;delay_lcd(1);//等待程序执行完毕。
}/*============显示一个字符子函数=============== void LCD_disp_char(uchar x,uchar y, uchar dat){ uchar address;if(y==1)address=0x80+x;elseaddress=0xc0+x;LCD_write_command(address);LCD_write_data(dat);}===================================*///==========延时1==================== void delay1(uint x){uint i,j;for(j=0;j<x;j++)for(i=0;i<100;i++);}//===========初始化函数=============void LCD_init(void){LCD_write_command(0x38);//设置8位格式，2行，5*7LCD_write_command(0x0c);//整体显示，关光标，不闪烁LCD_write_command(0x06);//设定输入方式，增量不移位LCD_write_command(0x01);//清屏显示delay_lcd(200);}//==========光标定位======================= void gotoxy(uchar x,uchar y){uchar address;if(y==1)address=0x80+x;elseaddress=0xc0+x;LCD_write_command(address);}//=========显示一个字符串==================。
void LCD_display(uchar *dat){ while(*dat!='\0'){LCD_write_data(*dat);dat++;}}。