单片机实时时钟电路（LCD1602、DS1302）

单片机实时时钟电路（LCD1602、DS1302）

想要更多项目私wo!!!

一、简介

此电路主要有51单片机、LCD1602模块、DS1302芯片组成，通过LCD1062显示当前时间。

二、运行效果

三、源文件

main.c

/*想要更多项目私wo!!!*/
#include <reg52.h>
#include <intrins.h>
#include <string.h>
#define uint unsigned int
#define uchar unsigned charsbit IO = P1^0;
sbit SCLK = P1^1;
sbit RST = P1^2;
sbit RS = P2^0;
sbit RW = P2^1;
sbit EN = P2^2;uchar *WEEK[]=
{
    "SUN","***","MON","TUS","WEN","THU","FRI","SAT"
};
uchar LCD_DSY_BUFFER1[]={
    "DATE 00-00-00 "};
uchar LCD_DSY_BUFFER2[]={
    "TIME 00:00:00 "};
uchar DateTime[7];void DelayMS(uint ms)
{
    uchar i;while(ms--){
    for(i=0;i<120;i++);}
}void Write_A_Byte_TO_DS1302(uchar x)
{
    uchar i;for(i=0;i<8;i++){
    IO=x&0x01;SCLK=1;SCLK=0;x>>=1;}
}uchar Get_A_Byte_FROM_DS1302()
{
    uchar i,b=0x00;for(i=0;i<8;i++){
    b |= _crol_((uchar)IO,i);SCLK=1;SCLK=0;}return b/16*10+b%16;
}uchar Read_Data(uchar addr)
{
    uchar dat;RST = 0;SCLK=0;RST=1;Write_A_Byte_TO_DS1302(addr);dat = Get_A_Byte_FROM_DS1302();SCLK=1;RST=0;return dat;
}void GetTime()
{
    uchar i,addr = 0x81;for(i=0;i<7;i++){
    DateTime[i]=Read_Data(addr);addr+=2;}
}uchar Read_LCD_State()
{
    uchar state;RS=0;RW=1;EN=1;DelayMS(1);state=P0;EN = 0;DelayMS(1);return state;
}void LCD_Busy_Wait()
{
    while((Read_LCD_State()&0x80)==0x80);DelayMS(5);
}void Write_LCD_Data(uchar dat)
{
    LCD_Busy_Wait();RS=1;RW=0;EN=0;P0=dat;EN=1;DelayMS(1);EN=0;	
}void Write_LCD_Command(uchar cmd)
{
    LCD_Busy_Wait();RS=0;RW=0;EN=0;P0=cmd;EN=1;DelayMS(1);EN=0;	
}void Init_LCD()
{
    Write_LCD_Command(0x38);DelayMS(1);	Write_LCD_Command(0x01);DelayMS(1);	Write_LCD_Command(0x06);DelayMS(1);	Write_LCD_Command(0x0c);DelayMS(1);	
}void Set_LCD_POS(uchar p)
{
    Write_LCD_Command(p|0x80);	
}void Display_LCD_String(uchar p,uchar *s)
{
    uchar i;Set_LCD_POS(p);for(i=0;i<16;i++){
    Write_LCD_Data(s[i]);DelayMS(1); 	}
}void Format_DateTime(uchar d,uchar *a)
{
    a[0]=d/10+'0';a[1]=d%10+'0';
}void main()
{
    Init_LCD();while(1){
    GetTime();Format_DateTime(DateTime[6],LCD_DSY_BUFFER1+5);Format_DateTime(DateTime[4],LCD_DSY_BUFFER1+8);Format_DateTime(DateTime[3],LCD_DSY_BUFFER1+11);strcpy(LCD_DSY_BUFFER1+13,WEEK[DateTime[5]]);Format_DateTime(DateTime[2],LCD_DSY_BUFFER2+5);Format_DateTime(DateTime[1],LCD_DSY_BUFFER2+8);Format_DateTime(DateTime[0],LCD_DSY_BUFFER2+11);Display_LCD_String(0x00,LCD_DSY_BUFFER1);Display_LCD_String(0x40,LCD_DSY_BUFFER2);}
}