1302.c

来自「利用DS3102时钟芯片跟12864液晶制作简单的多功能万年历」· C语言 代码 · 共 119 行

#include"1302.h"
#include"AT89X52.H"
#include"intrins.h"
/*#define WRITE_SECOND                0x80

#define READ_SECOND                   0x81

#define WRITE_MINUTE                  0x82

#define WRITE_HOUR                    0x84
								      
#define READ_MINUTE                   0x83

#define READ_HOUR                     0x85

#define WRITE_PROTECT                 0x8E	*/
//一些初始化命令控制字地址	直接调用write_data_ds1302(uchar taddr,uchar tdata)函数
sbit ds1302_RST =P3^2;
sbit ds1302_IO  =P3^3;
sbit ds1302_SCLK=P3^4;
sbit ACC0=ACC^0;
sbit ACC7=ACC^7;
uchar  read_Byte()
{
   uchar i;
   for(i=8;i>0;i--)
   { ACC=ACC>>1;
     ACC7=ds1302_IO;
     ds1302_SCLK=1;
     ds1302_SCLK=0;
    } 
   return(ACC);
}



void  write_Byte(uchar tdata)
{
   uchar i;
   ACC=tdata;
   for(i=8;i>0;i--)
   {ds1302_IO=ACC0;
     ds1302_SCLK=1;
     ds1302_SCLK=0;
     ACC=ACC>>1;
   }

}


void write_data_ds1302(uchar taddr,uchar tdata)
{
   ds1302_RST=0;
   ds1302_SCLK=0;
   ds1302_RST=1;
   write_Byte(taddr);
   write_Byte(tdata); 
   ds1302_RST=0;
}


uchar read_data_ds1302(uchar taddr)
{  
   uchar tdata;
   ds1302_SCLK=0;
   ds1302_RST=1;
   write_Byte(taddr);
   tdata=read_Byte(); 
   ds1302_RST=0;
   ds1302_SCLK=1;
   return(tdata); 
}



void set_ds1302(uchar taddr,uchar *P1302)
{
    uchar i;
    write_data_ds1302(0x8e,0x00);          
   while(*P1302!='\0')
    { 
       write_data_ds1302(taddr,*P1302);    
        P1302++;
        taddr+=2;
    }
   write_data_ds1302(0x8e,0x80);          
}


void get_ds1302(uchar  *now_time) 
{ 
    uchar k;
    uchar taddr = 0x81;
    for (k=0; k<5; k++)
    {
        now_time[k] = read_data_ds1302(taddr);
        taddr+=2;

    }
}

void read_ring( uchar *ring_time)
{
	uchar k;
	uchar taddr=0xc1;
	for(k=0;k<3;k++)
	{
		ring_time[k]=read_data_ds1302(taddr);
		taddr+=2;
	}
}
void init_ds1302()
{
    ds1302_RST=0;
    ds1302_SCLK=0;
}