DS1302电子钟仿真版.doc

DS1302单字节读写原理图：程序：#include#include#define uchar unsigned char/-wlx20101010QQ:583193113#define uint unsigned int#define CONTROL_REGISTER 0x8e#define WRITE_SEC 0x80#define READ_SEC 0x81#define WRITE_MINUTE 0x82#define READ_MINUTE 0x83#define WRITE_HOUR 0x84#define READ_HOUR 0x85/*定义端口* sbit SCK=P11;sbit IO=P12;sbit RST=P10; uchar hour1,hour2; uchar min1,min2; uchar sec1,sec2;uchar hour,min,sec; uchar code table=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xbf;void write_ds1302_byte(uchar dat)/单字节写子函数uchar i;for(i=0;i=1;SCK=1;SCK=0;uchar read_ds1302_byte()/单字节读子函数uchar i;uchar dat=0;IO=1;for(i=0;i=1;SCK=0;/时钟上升沿读if( IO ) dat |=(17);else dat &= (14)*10 + (value & 0x0f);return( value);void Initial_1302()write_ds1302(CONTROL_REGISTER,0x00);/关闭写保护write_ds1302(WRITE_SEC,0x00); write_ds1302(WRITE_MINUTE,0x30);write_ds1302(WRITE_HOUR,0x18);write_ds1302(CONTROL_REGISTER,0x80);/打开写保护void Get1302time()sec=read_ds1302(READ_SEC); min=read_ds1302(READ_MINUTE);hour=read_ds1302(READ_HOUR);void delay(uint t)uchar j;for(;t0;t-)for(j=10;j0;j-);void disp()hour1=hour/10;hour2=hour%10;min2=min%10;min1=min/10;sec2=sec%10;sec1=sec/10; P2=0x01;P0=tablehour1;delay(1);P2=0x02;P0=tablehour2;delay(1);P2=0x04;P0=table10;delay(1); P2=0x08;P0=tablemin1;delay(1);P2=0x10;P0=tablemin2;delay(1);P2=0x20;P0=table10;delay(1);P2=0x40;P0=tablesec1;delay(1);P2=0x80;P0=tablese