ds1307.c

温度仪表软件

#include <REG52.h>

#include "my_type.h"
#include "global_var.h"
#include "interface.h"
#include "function.h"

void ds1307_init()
{		   
	 uchar bb[]={0,0,0,0,0,0,0};	
	 bb[0]=(uchar)(9);
	 bb[1]=(uchar)(5);
	 bb[2]=(uchar)(1);
	 bb[3]=(uchar)(5);
	 bb[4]=(uchar)(7);
	 bb[5]=(uchar)(6);
    bb[6]=(uchar)(8);
	write_nbyte(0xd0,0x00,bb,7);   
	delay(10);					   
}


void rd_ds1307(uchar reg_ds1307)
{
//	uchar rdtime[2];   //定义一个临时数组
	read_nbyte(0xd0,reg_ds1307,rdtime,2);
	delay(10);
	num0=rdtime[1]/10;
	num1=rdtime[1]%10;
	num2=rdtime[0]/10;		
	num3=rdtime[0]%10;		   
	set_rtc=num3+num2*10+num1*100+num0*1000; 
}

void wr_ds1307(uchar reg_ds1307)		 
{										 
//	uchar wrtime[2];
//	wrtime[0] = (uchar)(set_rtc%100/10 *10+ set_rtc%10);	
//	wrtime[1] =	(uchar)(set_rtc/1000*10 + set_rtc/100%10);
//	wrtime[0] = (uchar)(4);
//	wrtime[1] = (uchar)(6);

	wrtime[0] = (uchar)(num3+10*num2);
	wrtime[1] = (uchar)(num1+10*num0);

 /*	 uchar bb[]={0,0};	     //		 //	uchar aa[]={12}; 
	 bb[0]=(uchar)(6);
	 bb[1]=(uchar)(9);							
	write_nbyte(0xd0,reg_ds1307,bb,2);   
	delay(10);							*/
	 
	write_nbyte(0xd0,reg_ds1307,wrtime,2);
	delay(10);
}