File size: 1,785 Bytes
9f43458 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | /* # DS1302代码片段说明
1. 本文件夹中提供的驱动代码供参赛选手完成程序设计参考。
2. 参赛选手可以自行编写相关代码或以该代码为基础，根据所选单片机类型、运行速度和试题
中对单片机时钟频率的要求，进行代码调试和修改。
*/
//
#include "ds1302.h"
void Write_Ds1302(unsigned char temp)
{
unsigned char i;
for (i=0;i<8;i++)
{
SCK = 0;
SDA = 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(SDA)
temp|=0x80;
SCK=1;
}
RST=0; _nop_();
SCK=0; _nop_();
SCK=1; _nop_();
SDA=0; _nop_();
SDA=1; _nop_();
return (temp);
}
void write_ds13(unsigned char *ds_time)
{
unsigned char temp;
Write_Ds1302_Byte(0x8e,0x00);
temp=(ds_time[0]/10*16)|(ds_time[0]%10);
Write_Ds1302_Byte(0x80,temp);
temp=(ds_time[1]/10*16)|(ds_time[1]%10);
Write_Ds1302_Byte(0x82,temp);
temp=(ds_time[2]/10*16)|(ds_time[2]%10);
Write_Ds1302_Byte(0x84,temp);
Write_Ds1302_Byte(0x8e,0x80);
}
void read_ds13(unsigned char *ds_time)
{
unsigned char temp;
temp=Read_Ds1302_Byte(0x81);
ds_time[0]=((temp>>4)*10)+(temp&0x0f);
temp=Read_Ds1302_Byte(0x83);
ds_time[1]=((temp>>4)*10)+(temp&0x0f);
temp=Read_Ds1302_Byte(0x85);
ds_time[2]=((temp>>4)*10)+(temp&0x0f);
}
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