急求单片机时钟设计 要求 AT89C51芯片 DS1302计时单元 LCD显示 要求有流程图 代码 原理图 急急急急 10
#include <reg52.h>
#include <intrins.h>
#include <string.h>
#define uint unsigned int
#define uchar unsigned char
sbit 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 耐庆槐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 |= 差基_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()
{
昌友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_BUFFER1+5);
Format_DateTime(DateTime[1],LCD_DSY_BUFFER1+8);
Format_DateTime(DateTime[0],LCD_DSY_BUFFER1+11);
Display_LCD_String(0x00,LCD_DSY_BUFFER1);
Display_LCD_String(0x40,LCD_DSY_BUFFER2);
}
}
原理图：
你可以参考一下，不过没有流程图噢
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