51单片机+DS1302+LCD1602可调时钟程序与Proteus仿真图

ID:679189 · 发表于 2022-4-26 20:08

51+DS1302+LCD仿真原理图如下（proteus仿真工程文件可到本帖附件中下载）

单片机源程序如下:

#include <REG51.H>
#include <intrins.h>
//#include "LCD1602.h"
//#include "DS1302.h"
#define uint unsigned int
#define uchar unsigned char
sbit DS1302_CLK = P1^7; //实时时钟时钟线引脚
sbit DS1302_IO = P1^6; //实时时钟数据线引脚
sbit DS1302_RST = P1^5; //实时时钟复位线引脚
sbit wireless_1 = P3^0;
sbit wireless_2 = P3^1;
sbit wireless_3 = P3^2;
sbit wireless_4 = P3^3;
sbit ACC0 = ACC^0;
sbit ACC7 = ACC^7;
char hide_sec,hide_min,hide_hour,hide_day,hide_week,hide_month,hide_year; //秒,分,时到日,月,年位闪的计数
sbit Set = P2^0; //模式切换键
sbit Up = P2^1; //加法按钮
sbit Down = P2^2; //减法按钮
sbit out = P2^3; //立刻跳出调整模式按钮
sbit DQ = P1^0; //温度传送数据IO口
char done,count,temp,flag,up_flag,down_flag; //
uchar temp_value; //温度值
uchar TempBuffer[5],week_value[2]; //
void show_time(); //液晶显示程序
/***********1602液晶显示部分子程序****************/
//Port Definitions**********************************************************
sbit LcdRs = P2^5;
sbit LcdRw = P2^6;
sbit LcdEn = P2^7;
sfr DBPort = 0x80; //P0=0x80,P1=0x90,P2=0xA0,P3=0xB0.数据端口
//内部等待函数**************************************************************************
unsigned char LCD_Wait(void)
{
LcdRs=0;
LcdRw=1; _nop_();
LcdEn=1; _nop_();
LcdEn=0;
return DBPort;
}
//向LCD写入命令或数据************************************************************
#define LCD_COMMAND 0 // Command
#define LCD_DATA 1 // Data
#define LCD_CLEAR_SCREEN 0x01 // 清屏
#define LCD_HOMING 0x02 // 光标返回原点
void LCD_Write(bit style, unsigned char input)
{
LcdEn=0;
LcdRs=style;
LcdRw=0; _nop_();
DBPort=input; _nop_();//注意顺序
LcdEn=1; _nop_();//注意顺序
LcdEn=0; _nop_();
LCD_Wait();
}
//设置显示模式************************************************************
#define LCD_SHOW 0x04 //显示开
#define LCD_HIDE 0x00 //显示关
#define LCD_CURSOR 0x02 //显示光标
#define LCD_NO_CURSOR 0x00 //无光标
#define LCD_FLASH 0x01 //光标闪动
#define LCD_NO_FLASH 0x00 //光标不闪动
void LCD_SetDisplay(unsigned char DisplayMode)
{
LCD_Write(LCD_COMMAND, 0x08|DisplayMode);
}
//设置输入模式************************************************************
#define LCD_AC_UP 0x02
#define LCD_AC_DOWN 0x00 // default
#define LCD_MOVE 0x01 // 画面可平移
#define LCD_NO_MOVE 0x00 //default
void LCD_SetInput(unsigned char InputMode)
{
LCD_Write(LCD_COMMAND, 0x04|InputMode);
}
//初始化LCD************************************************************
void LCD_Initial()
{
LcdEn=0;
LCD_Write(LCD_COMMAND,0x38); //8位数据端口,2行显示,5*7点阵
LCD_Write(LCD_COMMAND,0x38);
LCD_SetDisplay(LCD_SHOW|LCD_NO_CURSOR); //开启显示, 无光标
LCD_Write(LCD_COMMAND,LCD_CLEAR_SCREEN); //清屏
LCD_SetInput(LCD_AC_UP|LCD_NO_MOVE); //AC递增, 画面不动
}
//液晶字符输入的位置************************
void GotoXY(unsigned char x, unsigned char y)
{
if(y==0)
LCD_Write(LCD_COMMAND,0x80|x);
if(y==1)
LCD_Write(LCD_COMMAND,0x80|(x-0x40));
}
//将字符输出到液晶显示
void Print(unsigned char *str)
{
while(*str!='\0')//while(*str!='\0')
{
LCD_Write(LCD_DATA,*str);
str++;
}
}
/***********DS1302时钟部分子程序******************/
typedef struct SYSTEMTIME
{
unsigned char Second;
unsigned char Minute;
unsigned char Hour;
unsigned char Week;
unsigned char Day;
unsigned char Month;
unsigned char Year;
unsigned char DateString[11];
unsigned char TimeString[9];
}SYSTEMTIME; //定义的时间类型
SYSTEMTIME CurrentTime; //
#define AM(X) X
#define PM(X) (X+12) // 转成24小时制
#define DS1302_SECOND 0x80 //时钟芯片的寄存器位置,存放时间
#define DS1302_MINUTE 0x82
#define DS1302_HOUR 0x84
#define DS1302_WEEK 0x8A
#define DS1302_DAY 0x86
#define DS1302_MONTH 0x88
#define DS1302_YEAR 0x8C
void DS1302InputByte(unsigned char d) //实时时钟写入一字节(内部函数)
{
unsigned char i;
ACC = d;
for(i=8; i>0; i--)
{
DS1302_IO = ACC0; //相当于汇编中的 RRC
DS1302_CLK = 1;
DS1302_CLK = 0;
ACC = ACC >> 1;
}
}
unsigned char DS1302OutputByte(void) //实时时钟读取一字节(内部函数)
{
unsigned char i;
for(i=8; i>0; i--)
{
ACC = ACC >>1; //相当于汇编中的 RRC
ACC7 = DS1302_IO;
DS1302_CLK = 1;
DS1302_CLK = 0;
}
return(ACC);
}
void Write1302(unsigned char ucAddr, unsigned char ucDa) //ucAddr: DS1302地址, ucData: 要写的数据
{
DS1302_RST = 0;
DS1302_CLK = 0;
DS1302_RST = 1;
DS1302InputByte(ucAddr); // 地址，命令
DS1302InputByte(ucDa); // 写1Byte数据
DS1302_CLK = 1;
DS1302_RST = 0;
}
unsigned char Read1302(unsigned char ucAddr) //读取DS1302某地址的数据
{
unsigned char ucData;
DS1302_RST = 0;
DS1302_CLK = 0;
DS1302_RST = 1;
DS1302InputByte(ucAddr|0x01); // 地址，命令
ucData = DS1302OutputByte(); // 读1Byte数据
DS1302_CLK = 1;
DS1302_RST = 0;
return(ucData);
}
void DS1302_GetTime(SYSTEMTIME *Time) //获取时钟芯片的时钟数据到自定义的结构型数组
{
unsigned char ReadValue;
ReadValue = Read1302(DS1302_SECOND);
Time->Second = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_MINUTE);
Time->Minute = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_HOUR);
Time->Hour = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_DAY);
Time->Day = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_WEEK);
Time->Week = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_MONTH);
Time->Month = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_YEAR);
Time->Year = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
}
void DateToStr(SYSTEMTIME *Time) //将时间年,月,日,星期数据转换成液晶显示字符串,放到数组里DateString[]
{ if(hide_year<2) //这里的if,else语句都是判断位闪烁,<2显示数据,>2就不显示,输出字符串为 2007/07/22
{
Time->DateString[0] = '2';
Time->DateString[1] = '0';
Time->DateString[2] = Time->Year/10 + '0';
Time->DateString[3] = Time->Year%10 + '0';
}
else
{
Time->DateString[0] = ' ';
Time->DateString[1] = ' ';
Time->DateString[2] = ' ';
Time->DateString[3] = ' ';
}
Time->DateString[4] = '/';
if(hide_month<2)
{
Time->DateString[5] = Time->Month/10 + '0';
Time->DateString[6] = Time->Month%10 + '0';
}
else
{
Time->DateString[5] = ' ';
Time->DateString[6] = ' ';
}
Time->DateString[7] = '/';
if(hide_day<2)
{
Time->DateString[8] = Time->Day/10 + '0';
Time->DateString[9] = Time->Day%10 + '0';
}
else
{
Time->DateString[8] = ' ';
Time->DateString[9] = ' ';
}
if(hide_week<2)
{
week_value[0] = Time->Week%10 + '0'; //星期的数据另外放到 week_value[]数组里,跟年,月,日的分开存放,因为等一下要在最后显示
}
else
{
week_value[0] = ' ';
}
week_value[1] = '\0';
Time->DateString[10] = '\0'; //字符串末尾加 '\0' ,判断结束字符
}
void TimeToStr(SYSTEMTIME *Time) //将时,分,秒数据转换成液晶显示字符放到数组 TimeString[];
{ if(hide_hour<2)
{
Time->TimeString[0] = Time->Hour/10 + '0';
Time->TimeString[1] = Time->Hour%10 + '0';
}
else
{
Time->TimeString[0] = ' ';
Time->TimeString[1] = ' ';
}
Time->TimeString[2] = ':';
if(hide_min<2)
{
Time->TimeString[3] = Time->Minute/10 + '0';
Time->TimeString[4] = Time->Minute%10 + '0';
}
else
{
Time->TimeString[3] = ' ';
Time->TimeString[4] = ' ';
}
Time->TimeString[5] = ':';
if(hide_sec<2)
{
Time->TimeString[6] = Time->Second/10 + '0';
Time->TimeString[7] = Time->Second%10 + '0';
}
else
{
Time->TimeString[6] = ' ';
Time->TimeString[7] = ' ';
}
Time->DateString[8] = '\0';
}
void Initial_DS1302(void) //时钟芯片初始化
{
unsigned char Second=Read1302(DS1302_SECOND);
if(Second&0x80) //判断时钟芯片是否关闭
{
Write1302(0x8e,0x00); //写入允许
Write1302(0x8c,0x07); //以下写入初始化时间日期:07/07/25.星期: 3. 时间: 23:59:55
Write1302(0x88,0x07);
Write1302(0x86,0x25);
Write1302(0x8a,0x07); //xingqi
Write1302(0x84,0x23);
Write1302(0x82,0x59);
Write1302(0x80,0x55);
Write1302(0x8e,0x80); //禁止写入
}
}
/***********ds18b20子程序*************************/
/***********ds18b20延迟子函数（晶振12MHz ）*******/
void delay_18B20(unsigned int i)
{
while(i--);
}
/**********ds18b20初始化函数**********************/
void Init_DS18B20(void)
{
unsigned char x=0;
DQ = 1; //DQ复位
delay_18B20(8); //稍做延时
DQ = 0; //单片机将DQ拉低
delay_18B20(80); //精确延时大于 480us
DQ = 1; //拉高总线
delay_18B20(14);
x=DQ; //稍做延时后如果x=0则初始化成功 x=1则初始化失败
delay_18B20(20);
}
/***********ds18b20读一个字节**************/
unsigned char ReadOneChar(void)
{
uchar i=0;
uchar dat = 0;
for (i=8;i>0;i--)
{
DQ = 0; // 给脉冲信号
dat>>=1; //数据右移一位
DQ = 1; // 给脉冲信号
if(DQ)
dat|=0x80; //按位或，取最高位
delay_18B20(4);
}
return(dat);
}
/*************ds18b20写一个字节****************/
void WriteOneChar(uchar dat)
{
unsigned char i=0;
for (i=8; i>0; i--)
{
DQ = 0;
DQ = dat&0x01; //取最低位
delay_18B20(5);
DQ = 1; //上升沿将数据送入
dat>>=1;
}
}
/**************读取ds18b20当前温度************/
void ReadTemp(void)
{
unsigned char a=0;
unsigned char b=0;
unsigned char t=0;
Init_DS18B20();
WriteOneChar(0xCC); // 跳过读序号列号的操作
WriteOneChar(0x44); // 启动温度转换
delay_18B20(100); // this message is wery important
Init_DS18B20();
WriteOneChar(0xCC); //跳过读序号列号的操作
WriteOneChar(0xBE); //读取温度寄存器等（共可读9个寄存器）前两个就是温度
……………………
…………限于本文篇幅余下代码请从51黑下载附件…………

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Keil代码与Proteus仿真下载:

DS1302时钟 DS18B20 LCD1602.7z (394.86 KB, 下载次数: 168)

ID:262 · 发表于 2022-4-28 00:30

好资料，51黑有你更精彩!!!

ID:1010262 · 发表于 2022-5-10 21:46

51黑有你更精彩

ID:1012662 · 发表于 2022-5-18 10:32

用了你的程序，时间不走，按键无反应，这是什么原因啊

ID:1012662 · 发表于 2022-5-18 10:32

用了你的程序，时间不走，按键无反应，请教下这是什么原因啊

ID:170318 · 发表于 2022-5-18 12:39

ssxxhh 发表于 2022-5-18 10:32
用了你的程序，时间不走，按键无反应，请教下这是什么原因啊

脚位是否与程序对应？

ID:1012662 · 发表于 2022-5-19 11:30

本帖最后由 ssxxhh 于 2022-5-20 15:34 编辑

jhczy 发表于 2022-5-18 12:39
脚位是否与程序对应？

检查了好几遍，都没问题，就是图中的问题

ID:1012662 · 发表于 2022-5-20 17:13

jhczy 发表于 2022-5-18 12:39
脚位是否与程序对应？

都没问题，看看1602显示的是什么原因

ID:1028325 · 发表于 2022-6-1 07:25

很好的参考程序，让我有了思路

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51单片机+DS1302+LCD1602可调时钟程序与Proteus仿真图

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