DS1302+18B20数码管

1302的头文件，#ifndef _REAL_TIMER_DS1302_2003_7_21_#define _REAL_TIMER_DS1302_2003_7_21_#include <at89x52.h>sbit DS1302_CLK = P1^0; //实时时钟时钟线引脚sbit DS1302_IO = P1^1; //实时时钟数据线引脚sbit DS1302_RST = P1^2; //实时时钟复位线引脚sbit ACC0 = ACC^0;sbit ACC7 = ACC^7;typedef struct __SYSTEMTIME__{unsigned char Second;unsigned char Minute;unsigned char Hour;unsigned char Week;unsigned char Day;unsigned char Month;unsigned char Year;unsigned char DateString[9];unsigned char TimeString[9];}SYSTEMTIME; //定义的时间类型#define AM(X) X#define PM(X) (X+12) // 转成24小时制#define DS1302_SECOND 0x80 //秒寄存器#define DS1302_MINUTE 0x82 //分寄存器#define DS1302_HOUR 0x84#define DS1302_WEEK 0x8A#define DS1302_DAY 0x86#define DS1302_MONTH 0x88#define DS1302_YEAR 0x8C#define DS1302_RAM(X) (0xC0+(X)*2) //用于计算DS1302_RAM 地址的宏void DS1302InputByte(unsigned char d) //实时时钟写入一字节(内部函数){unsigned char i;ACC = d;for(i=8; i>0; i--){DS1302_IO = ACC0; //相当于汇编中的RRCDS1302_CLK = 1;DS1302_CLK = 0; //发一个高跳变到低的脉冲产生一个下降沿信号，写数据下降沿有效，下降沿写入ACC = ACC >> 1;} //将ACC中的值d向右移一位得到将要写入的下一个值}unsigned char DS1302OutputByte(void) //实时时钟读取一字节(内部函数){unsigned char i;for(i=8; i>0; i--){ACC = ACC >>1; //相当于汇编中的RRCACC7 = DS1302_IO;DS1302_CLK = 1;DS1302_CLK = 0; //发一个高跳变到低的脉冲}return(ACC);}void Write1302(unsigned char ucAddr, unsigned char ucDa) //ucAddr: DS1302地址, ucData: 要写的数据{DS1302_RST = 0;DS1302_CLK = 0;DS1302_RST = 1;DS1302InputByte(ucAddr); // 地址，命令DS1302InputByte(ucDa); // 写1Byte数据DS1302_CLK = 1;DS1302_RST = 0; //RST 0->1->0,CLK 0->1}unsigned char Read1302(unsigned char ucAddr) //读取DS1302某地址的数据{unsigned char ucData;DS1302_RST = 0;DS1302_CLK = 0;DS1302_RST = 1; //enableDS1302InputByte(ucAddr|0x01); // 地址，命令ucData = DS1302OutputByte(); // 读1Byte数据DS1302_CLK = 1; //RST 0->1->0,CLK 0->1DS1302_RST = 0;return(ucData);}void DS1302_SetProtect(bit flag) //是否写保护{if(flag)Write1302(0x8E,0x10); //WP=1,不能写入elseWrite1302(0x8E,0x00);//WP=0,可以写入}void DS1302_SetTime(unsigned char Address, unsigned char Value) // 设置时间函数{DS1302_SetProtect(0);Write1302(Address, ((Value/10)<<4 | (Value%10))); //高4位为十位，低4位为个位}void DS1302_GetTime(SYSTEMTIME *Time){unsigned char ReadV alue;ReadValue = Read1302(DS1302_SECOND);Time->Second = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);//转换成10进制的秒ReadValue = Read1302(DS1302_MINUTE);Time->Minute = ((ReadV alue&0x70)>>4)*10 + (ReadValue&0x0F);ReadValue = Read1302(DS1302_HOUR);Time->Hour = ((ReadV alue&0x70)>>4)*10 + (ReadV alue&0x0F);ReadValue = Read1302(DS1302_DAY);Time->Day = ((ReadV alue&0x70)>>4)*10 + (ReadV alue&0x0F);ReadValue = Read1302(DS1302_WEEK);Time->Week = ((ReadValue&0x70)>>4)*10 + (ReadV alue&0x0F);ReadValue = Read1302(DS1302_MONTH);Time->Month = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);ReadValue = Read1302(DS1302_YEAR);Time->Year = ((ReadValue&0xf0)>>4)*10 + (ReadValue&0x0F);}void Initial_DS1302(void){unsigned char Second=Read1302(DS1302_SECOND);if(Second&0x80) //如果第七为1（表明没有启动), 则启动时钟DS1302_SetTime(DS1302_SECOND,0);}#endif此处断开改以上内容为*.h的文件18b20所有程序与1302的显示调试程序#include <at89x52.h>#include <DS1302.h>#include "intrins.h"#define Disdata P0 //段码输出口#define discan P2 //扫描口#define uchar unsigned char#define uint unsigned intunsigned char code dispcode[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xbf}; unsigned char time[]={0,0,0,0,0,0,0,0};//用来储存时间unsigned char date[]={0,0,0,0,0,0,0,0};//用来储存日期SYSTEMTIME time1; //在ds1302.h文件中已经定义了一个名字为SYSTEMTIME的结构体,在这里我们定义一个变量名//为time的SYSTEMTIME结构体sbit DQ=P3^3; //温度输入口sbit DIN=P0^7; //LED小数点控制uint h;uchar zzq;uchar code ditab[16]={0x00,0x01,0x01,0x02,0x03,0x03,0x04,0x04,0x05,0x06,0x06,0x07,0x08,0x08,0x09,0x09};//uchar code dis_7[12]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf};//共阳LED段码表"0" "1" "2" "3" "4" "5" "6" "7" "8" "9" "不亮" "-"uchar code scan_con[4]={0x7f,0xbf,0xdf,0xef}; //列扫描控制字uchar data temp_data[2]={0x00,0x00}; //读出温度暂放uchar data displayc[5]={0x00,0x00,0x00,0x00,0x00}; //显示单元数据，共4个数据和一个运算/****************11ms延时************/void delay18b20(uint t){for(;t>0;t--);}///***********显示扫描函数**********/scan(){char k;for(k=0;k<4;k++) //四位LED扫描控制{Disdata=0xff;Disdata=dis_7[displayc[k]];if(k==1){DIN=0;}discan=scan_con[k];delay18b20(200);discan=0xff;}}/////***********18B20复位函数**********/ow_reset(void){char presence=1;while(presence){while(presence){DQ=1;_nop_();_nop_();DQ=0; //发一个480us的低电平delay18b20(30); // 550usDQ=1; // 然后将总线置高电平用于检查是否有器件将它置于低电平delay18b20(6); // 66us如果有，DQ将会为低电平，时间长约为15-60us presence=DQ; // presence=0继续下一步}delay18b20(20); //延时500uspresence = ~DQ;}DQ=1;}/////**********18B20写命令函数*********///向1-WIRE 总线上写一个字节void write_byte(uchar val){uchar i;for (i=8; i>0; i--) //{DQ=1;_nop_();_nop_();DQ = 0;_nop_();_nop_();_nop_();_nop_();_nop_();//5usDQ = val&0x01; //最低位移出delay18b20(4); //66usval=val/2; //右移一位}DQ = 1;delay18b20(1);}///*********18B20读1个字节函数********///从总线上读取一个字节uchar read_byte(void){uchar i;uchar value = 0;for (i=8;i>0;i--){DQ=1;_nop_();_nop_();value>>=1;DQ = 0; //_nop_();_nop_();_nop_();_nop_(); //4usDQ = 1;_nop_();_nop_();_nop_();_nop_(); //4usif(DQ)value|=0x80;delay18b20(4); //66us}DQ=1;return(value);}///***********读出温度函数**********///read_temp(){ow_reset(); //总线复位write_byte(0xCC); // 发Skip ROM命令write_byte(0xBE); // 发读命令;读内部RAM中9字节的内容temp_data[0]=read_byte(); //温度低8位temp_data[1]=read_byte(); //温度高8位ow_reset();write_byte(0xCC); // Skip ROMwrite_byte(0x44); // 发转换命令}///***********温度数据处理函数**********/void work_temp(){uchar n=0;uchar doth,dotl;uchar zzq3=1,zzq2=1; //数字显示修正标记if((temp_data[1]&0xf8)!=0x00){temp_data[1]=~(temp_data[1]);temp_data[0]=~(temp_data[0])+1;n=1;zzq=1;}//负温度求补码if(temp_data[0]>255){temp_data[1]++;}displayc[4]=temp_data[0]&0x0f;displayc[0]=ditab[displayc[4]];doth=displayc[0]/10;dotl=displayc[0]%10;displayc[4]=((temp_data[0]&0xf0)>>4)|((temp_data[1]&0x07)<<4); displayc[3]=displayc[4]/100;displayc[2]=displayc[4]/10%10;displayc[1]=displayc[4]%10;if(!displayc[3]){displayc[3]=0x0a;zzq3=0;if(!displayc[2]){displayc[2]=0x0a;zzq2=0;}}//最高位为0时都不显示if(n){displayc[3]=0x0b;//负温度时最高位显示"-"zzq3=0;}}///***************1302程序****************/void delay(unsigned char i) //延时子程序{unsigned char j;while((i--)!=0){for(j=123;j>0;j--);}}unsigned char button_time(n,x,y) //时钟调整子程序unsigned char n,x,y;{if(P1_7==0){delay(50);if(P1_7==0){n++;if(n==x)n=0;while(P1_7==0);}}if(P1_5==0){delay(50);if(P1_5==0){if(n==0)n=y;elsen--;while(P1_5==0);}}return n;}/******************1302时间调整程序***************************/ unsigned char button_date(n,x,y) //日期调整子程序unsigned char n,x,y;{if(P1_7==0){delay(50);if(P1_7==0){n++;if(n==x)n=1;while(P1_7==0);}}if(P1_5==0){delay(50);if(P1_5==0){if(n==1)n=y;elsen--;while(P1_5==0);}}return n;}/*******************1302显示程序***********/void display(hour1,hour10,minute1,minute10,second1,second10) //显示子程序unsigned char second10,second1,minute10,minute1,hour10,hour1;{ P2=0xfe;P0=dispcode[hour1];//显示时的十位delay(2);P2=0xfd;P0=dispcode[hour10]; //显示时的个位delay(2);if(time[5]%2==1){P2=0xfb;}else{P2=0xff;}P0=dispcode[10]; //显示"-"delay(2);P2=0xf7;P0=dispcode[minute1];//显示分的十位delay(2);P2=0xef;P0=dispcode[minute10]; //显示分的个位delay(2);P2=0xbf;P0=dispcode[second1];delay(2);P2=0x7f;P0=dispcode[second10];delay(2);}/*************主函数***************/void main(){unsigned char flag;Initial_DS1302(); //初始化DS1302这个时钟芯片, Disdata=0xff; //初始化端口discan=0xff;for(h=0;h<4;h++){displayc[h]=3;}//开机显示8888ow_reset(); // 开机先转换一次write_byte(0xCC); // Skip ROMwrite_byte(0x44); // 发转换命令for(h=0;h<2;h++){scan();} //开机显示"8888"2秒while(1){read_temp(); //读出18B20温度数据work_temp(); //处理温度数据DS1302_GetTime(&time1); //读取时间参数time[5]=(time1.Second)%10; //把秒的个位数据存入time[5]time[4]=(time1.Second)/10; //把秒的十位数据存入time[4]time[3]=(time1.Minute)%10; //把分的个位数据存入time[3]time[2]=(time1.Minute)/10; //把分的十位数据存入time[2]time[1]=(time1.Hour)%10; //把时的个位数据存入time[1]time[0]=(time1.Hour)/10; //把时的十位数据存入time[0]date[5]=(time1.Day)%10;date[4]=(time1.Day)/10;date[3]=(time1.Month)%10;date[2]=(time1.Month)/10;date[1]=(time1.Year)%10;date[0]=(time1.Year)/10;if(P1_4==0) //如果按下Time Start键一下,时钟开始正常显示时间,再按一下,显示日期{delay(50);if(P1_4==0){flag++;if(flag>1){flag=0;}}while(P1_4==0);}if(P1_6==0) //如果按下Time Set键一下,开始显示日期,再按一下进入日期跟时钟的调节模式{delay(50);if(P1_6==0){flag++;if(flag>7){flag=0;}}while(P1_6==0);}switch(flag){case 0:display(time[0],time[1],time[2],time[3],displayc[2],displayc[1]); //调用子函数display,把存入数组time的数据给显示出来break;case 1:display(date[0],date[1],date[2],date[3],date[4],date[5]); //调用子函数display,把存入数组date的数据给显示出来break;case 2:time1.Year=button_date(time1.Year,100,99); //调整年DS1302_SetTime(0x8c,time1.Year);display(date[0],date[1],10,10,10,10);break;case 3:time1.Month=button_date(time1.Month,13,12); //调整月DS1302_SetTime(0x88,time1.Month);display(10,10,date[2],date[3],10,10);break;case 4:time1.Day=button_date(time1.Day,32,31); //调整日DS1302_SetTime(0x86,time1.Day);display(10,10,10,10,date[4],date[5]);break;case 5:time1.Hour=button_time(time1.Hour,24,23); //调整时DS1302_SetTime(0x84,time1.Hour);display(time[0],time[1],10,10,10,10);break;case 6:time1.Minute=button_time(time1.Minute,60,59); //调整分DS1302_SetTime(0x82,time1.Minute);display(10,10,time[2],time[3],10,10);break;case 7:time1.Second=button_time(time1.Second,60,59); //调整秒DS1302_SetTime(0x80,time1.Second);display(10,10,10,10,time[4],time[5]);break;}}}实验说明K5按键按一下,时钟开始正常显示时间,再按一下,显示日期K6按键为调整键K7按键按一下,开始显示日期,再按一下进入日期跟时钟的调节模式。