基于蓝桥杯单片机通过读取DS1302时钟芯片显示在数码管上

/* 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]); } }