ds1302时钟显示.doc

/DS1302在使用的时候要加上拉电阻！不加上拉会出现驱动力不够，而使数码管缺段显示！#include#include#define uchar unsigned char#define uint unsigned int#define date0 second0#define date1 second1#define month0 minute0#define month1 minute1#define week0 hour0#define week1 hour1sbit DS1302_CLK = P12; /实时时钟时钟线引脚 sbit DS1302_IO = P13; /实时时钟数据线引脚 sbit DS1302_RST = P14; /实时时钟复位线引脚sbit ACC0 = ACC0;sbit ACC7 = ACC7;sbit time= P32;sbit date= P33;sbit second0 = P20;sbit second1 = P21;sbit minute0 = P22;sbit minute1 = P23;sbit hour0 = P24;sbit hour1 = P25;sbit year0 = P26;sbit year1 = P27; uchar now_time_date8=0x00,0x24,0x14,0x03,0x15,0x04,0x09,0x00;/秒，分，时，星期，日，月，年,禁止写/code uint table=0x3f,0x60,0x5b,0x4f,0x66,0x6d,0x7d,0x70,0x7f,0x6f; code uint table= 0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90; /显示段码 数码管字跟/*延时*/ void delay(uint i)uint j=0;for(;i0;i-)for(j=0;j0; i-) DS1302_IO = ACC0; /相当于汇编中的 RRC DS1302_CLK = 1; DS1302_CLK = 0; ACC = ACC 1; /*DS1302：读取操作（下降沿）*/uchar DS1302OutputByte() /实时时钟读取一字节(内部函数) unsigned char i; for(i=8; i0; i-) ACC = ACC 1; /相当于汇编中的 RRC ACC7 = DS1302_IO; DS1302_CLK = 1; DS1302_CLK = 0; return(ACC); /*DS1302:写入数据（先送地址，再写数据）*/ void Write1302(uchar ucAddr, uchar 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; /*DS1302:读取数据（先送地址，再读数据）*/uchar 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; DS1302InputByte(ucAddr|0x01); / 地址，命令 ucData = DS1302OutputByte(); / 读1Byte数据 DS1302_CLK = 1; DS1302_RST = 0; return(ucData);void set_ds1302(uchar addr,uchar *p,uchar n) Write1302(0x8e,0x00);/写控制字，允许写操作 for(;n0;n-) Write1302(addr,*p); p+; addr=addr+2; Write1302(0x8e,0x80);/写保护，禁止写入void deplay()/显示子程序if(time=1 & date=1) /时间显示 second0=0;P0=tablenow_time_date0&0x0f;/秒的个位 delay(1);second0=1; second1=0; P0=tablenow_time_date04; /秒的十位 delay(1);second1=1; minute0=0; P0=tablenow_time_date1&0x0f; /分钟的个位 delay(1);minute0=1; minute1=0;P0=tablenow_time_date14; /分钟的十位 delay(1);minute1=1; hour0=0; P0=tablenow_time_date2&0x0f; /时的个位 delay(1);hour0=1; hour1=0; P0=table(now_time_date24); /时的个位 delay(1);hour1=1; if(date=0 | time=0 ) / 日期显示 date0=0; P0=tablenow_time_date3&0x0f; /时的十位 delay(2);date0=1; date1=0; P0=tablenow_time_date34; /日期 delay(2); date1=1; month0=0;P0=tablenow_time_date4&0x0f; delay(1); month0=1; month1=0;P0=tablenow_time_date44; /月份 delay(1);month1=1; week0=0;P0=tablenow_time_date5&0x0f; /星期 delay(1);week0=1; week1=0;P0=table(now_time_date54); delay(1);week1=1; year0=0;P0=tablenow_time_date6&0x0f; /年 delay(1);year0=1; year1=0; P0=table(now_time_date64); delay(1);year1=1; /*初始化*/void init_ds1302() DS1302_RST =0; DS1302_CLK =0; Write1302(0x8e,0x00);/写控制字，允许写 Write1302(0x90,0xaa);/禁止涡流充电/*主程序*/void main() init_ds1302(); /初始化ds1302 Write1302(0x8e,0x00);/写控制字，允许写 set_ds13