/*
程序说明: DS1302驱动程序
软件环境: Keil uVision 4.10
硬件环境: CT107单片机综合实训平台 8051，12MHz
日 期: 2011-8-9
*/
#include "ds1302.h"
extern u8 Date[7];
sbit SCK=P1^7;
sbit SDD=P2^3;
sbit RST = P1^3; // DS1302复位
void Write_Ds1302(unsigned char temp)
{
unsigned char i;
for (i=0;i<8;i++)
{
SCK=0;
SDD=temp&0x01;
temp>>=1;
SCK=1;
}
}
void Write_Ds1302_Byte( unsigned char address,unsigned char dat )
{
RST=0; _nop_();
SCK=0; _nop_();
RST=1; _nop_();
Write_Ds1302(address);
Write_Ds1302(dat);
RST=0;
}
unsigned char Read_Ds1302_Byte ( unsigned char address )
{
unsigned char i,temp=0x00;
RST=0; _nop_();
SCK=0; _nop_();
RST=1; _nop_();
Write_Ds1302(address);
for (i=0;i<8;i++)
{
SCK=0;
temp>>=1;
if(SDD)
temp|=0x80;
SCK=1;
}
RST=0; _nop_();
SCK=0; _nop_();
SCK=1; _nop_();
SDD=0; _nop_();
SDD=1; _nop_();
return (temp);
}
void Write_Time(void){
u8 i;
Write_Ds1302_Byte(0x8e,0x00);//解除写保护
for(i = 0;i < 7;i++){
Write_Ds1302_Byte( Write_AD[i],Date[i]);
}
Write_Ds1302_Byte(0x8e,0x80);//开启写保护
}
void Read_Time(void){
u8 i;
for(i = 0;i<7;i++){
Date[i] = Read_Ds1302_Byte(Read_AD[i]);
}
}
蓝桥杯单片机.rar （41个子文件） 
Day1 MAIN 
main.h 558B main.c 594B A.uvproj 16KB Objects main.__i 172B HC138.obj 4KB A.build_log.htm 1KB Time.obj 3KB Key.obj 3KB ds1302.__i 180B ds1302.obj 6KB STARTUP.obj 819B A.lnp 247B A 24KB SMG.__i 168B SMG.obj 5KB HC138.__i 176B Time.__i 172B Key.__i 168B main.obj 4KB A.hex 3KB A.uvgui.pc 137KB STARTUP.A51 6KB SMG SMG.c 616B SMG.h 120B KEY Key.c 18B Key.h 128B Listings Time.lst 1KB main.lst 2KB HC138.lst 2KB Key.lst 906B A.m51 18KB ds1302.lst 3KB STARTUP.lst 14KB SMG.lst 2KB A.uvopt 9KB DS1302 ds1302.h 282B ds1302.c 1KB HC138 HC138.c 590B HC138.h 131B Time Time.h 92B Time.c 247B资源评论
