一、DS1302时钟模块简介

二、绘制Proteus 仿真电路图

三、编写51单片机代码

#include "DS1302.h"

// 位定义
sbit DS1302_DATA = P3^3;
sbit SCLK = P3^2;
sbit RST = P3^1;

// 向DS1302写一个字节
void DS1302_Write_Byte(unsigned char addrOrData)
{
	unsigned char i;
	for (i = 0; i < 8; i++)
	{
		DS1302_DATA = addrOrData&(0x01<<i);
		SCLK = 1;
		SCLK = 0;
	}
}

// 向DS1302寄存器写数据
void DS1302_Write(unsigned char addr, unsigned char dat)
{
	RST = 0;
	SCLK = 0;
	RST = 1;
	DS1302_Write_Byte(addr); // 写入寄存器地址
	DS1302_Write_Byte(dat);  // 写入数据
	RST = 0;
}

// 读取数据
unsigned char ds1302_read_byte()
{
	unsigned char dat = 0x00;
	unsigned char i;
	for (i = 0; i < 8; i++)
	{
		if(DS1302_DATA)
		{
			dat|=(0x01<<i);
		}
		SCLK = 1;
		SCLK = 0;
	}

	return dat;
}

unsigned char ds1302_read(unsigned char addr)
{
	unsigned char dat;
	RST = 0;
	SCLK = 0;
	RST = 1;
	DS1302_Write_Byte(addr);
	dat = ds1302_read_byte();
	RST = 0;

	return dat;
}



void DS1302_Init()
{
	DS1302_Write(0x8E, 0x00);

	DS1302_Write(0x84, 0x19);	// 写入时
	DS1302_Write(0x82, 0x06);	// 写入分
	DS1302_Write(0x80, 0x30);	// 写入秒

	DS1302_Write(0x8E, 0x80);
}

四、仿真效果

五、完整源码和Proteus仿真电路图下载

链接：https://pan.baidu.com/s/1b0QVVlKWSNABu2LsQcFE0A?pwd=pvjs
提取码：pvjs