#include <reg51.h>
#include <intrins.h>
#include <stdlib.h>
#include <stdlib.h>
< p>#define uchar unsigned char#define uint unsigned int
#include <intrins.h>
#define uchar unsigned char
##define uint unsigned int
# define uint unsigned int
uchar shijian[6]={0x1,0x1,0x0,0x2,0x5,0x8};
uchar zi[]={"hours, minutes, seconds"};
uchar j,key;
char z,z1;<
uchar m,mark=0,bz=0;
uint k=4000;
uchar i;
/* Port Definition*/
#define LCD_data P0 //data port
sbit inter_0=P3^2;
< p>sbit LCD_RS = P2^7; //register select inputsbit LCD_RW = P2^6; //LCD read/write control
sbit LCD_EN = P2^5; //LCD enable control
sbit LCD_PSB = P2^4; //serial/parallel mode control
void delay_1ms(uint x)
{
uint i,j;
for(j=0;j<x;j++)
for(i=0;i<110;i++);
}
/**************** ***************************************************/
/* */
/* Write command data to LCD */
/*RS=L, RW=L, E=High Pulse, D0-D7=Command Code. */
/* */
/*******************************************************************/
void write_cmd(uchar cmd)
{
LCD_RS = 0;
LCD_RW = 0;
LCD_EN = 0;
P0 = cmd;
delay_1ms(5);
LCD_EN = 1;
delay_1ms(5);
LCD_EN = 0 ;
}
/*******************************************************************/
/* */
/* Write display data to LCD */
/*RS=H. RW=L, E=High pulse, D0-D7=Data. */
/* */
/*******************************************************************/
void write_dat(uchar dat)
{
LCD_RS = 1;
LCD_RW = 0;
LCD_EN = 0;
P0 = dat;
delay_1ms(5);
LCD_EN = 1;
delay_1ms(5);
LCD_EN = 0 ;
}
/*********************************************************/
/* */
/* Sets the display position */
/* */
/******** *************************************************/
void lcd_pos(uchar X,uchar Y)
{
uchar pos;
if (X==0)
{ X=0x80;}
else if (X==1)
{X=0x90;}
else if (X==2)
{X=0x88;}
else if (X==3)
{X=0x98;}
pos = X+Y ;
write_cmd(pos); //display address
}
/*******************************************************************/
/* */
/* LCD initialization settings */
/* */
/*******************************************************************/
void lcd_init()
{
LCD_PSB = 1; //parallel mode
write_cmd(0x30); //basic command operation
delay_1ms(5);
write_cmd(0x0C); //display on, off cursor
delay_1ms(5);
{void lcd_init()
{void lcd_init(){void lcd_init(){void lcd_init(){void lcd_init() write_cmd(0x01); //clear LCD displaydelay_1ms(5);
}
/*********************************************************/
/ */
/* main program */
/* */
/*********************************************************/
main()
{ uchar x;
IT0=1;EX0=1;EA=1;
P1=0XF0;
TMOD=0X2;
TH0=0X6;
TL0=0X6;
EA=1;ET0=1;TR0=1;
i=0;
delay_1ms( 10); //delay
lcd_init();
lcd_pos(0,1);
write_dat(zi[0]);
write_dat(zi[1]);
lcd_pos(0,3);
write_dat (zi[2]);
write_dat(zi[3]);
lcd_pos(0,5);
write_dat(zi[4]);
write_dat(zi[5]);
while(1)
{
z=1;
z1=0;
P1=0XF0;
lcd_pos(0,0);
i = 0;
while(i<2)
{
write_dat(shijian[i]+0x30);
i++;
}
lcd_pos(0,2);
while(i<4)
{
write_dat(shijian[i]+0x30);
i++;
}
lcd_pos(0 ,4);
while(i<6)
{
write_dat(shijian[i]+0x30);
i++;
}
if(mark)
{TR0=0;
lcd_pos(0 ,0);delay_1ms(5);
write_cmd(0x0f);
delay_1ms(5);
bz=0;
while(!bz);
while(mark)
{
if(key= =12)
{z--;write_cmd(0x10);delay_1ms(5);write_cmd(0x10);delay_1ms(5);bz=0;if((2*(z-1)+(z1-1))==-3){for(x=0;x<6;x++){write_ cmd(0x14);delay_1ms(5);}z=3;z1=0;}}
else if(key==13)
{z++;write_cmd(0x14);delay_1ms(5);write_cmd(0x14);delay_1ms(5);bz= 0;if((2*(z-1)+(z1-1))>=5){for(x=0;x<6;x++){write_cmd(0x10);delay_1ms(5);}z=1;z1=0;}}
else if(key<=9)
{z1++; write_dat(key+48);delay_1ms(5);shijian[2*(z-1)+(z1-1)]=key;if((2*(z-1)+(z1-1)<5)&&(z1%2==0)){write_cmd(0x14);delay_1ms( 5);}else if(2*(z-1)+(z1-1)>=5){for(x=0;x<5;x++){write_cmd(0x10);delay_1ms(5);}z=1;z1=0;}bz=0;}
else if(key==15)
{ write_cmd(0x0c);delay_1ms(5);mark=0;}
while(!bz);
}
bz=0;
TR0=1;
}
}
/********** ***************************/
count0 (void) interrupt 1
{
k--;
if(k==0x0)
{++shijian[5];k=4000;
if (shijian[5]==0)
{shijian[5]=0x0;
++shijian[4];
if (shijian[4]==0x6)
{shijian[4]=0x0;
++shijian[3];
if (shijian[3]==0)
{shijian[3]=0x0;
++shijian[2];
if (shijian[2]==0x6)
{shijian[2]=0x0;
++shijian[ 1];
if((shijian[0]==0x0)&&(shijian[1]==0))
{shijian[1]=0x0;
++shijian[0];
}
else if((shijian[ 0]==0x1)&&(shijian[1]==0x2))
{shijian[1]=0x0;
shijian[0]=0x0;
}
}
}
}
}
}
}
}
} /p>
}
/*******************************************/
int_0(void) interrupt 0
{delay_1ms(15);
if(inter_0==0)
{uchar n=0,m=0,temp;
uchar scan[4]={0xfe,0xfd,0xfb,0xf7};
uchar table[4][4]={0x7e,0xbe,0xde,0xee,0x7d,0xbd,0xdd, 0xed,0x7b,0xbb,0xdb,0xeb,0x77,0xb7,0xd7,0xe7};
uchar num[4][4]={12,1,4,7,0,2,5,8,13,3,6,9,11,10,15,14};
while(n<4)
{P1=scan[n];temp=P1;m=0;
while(m<4)
{if(temp==table[n][m])
goto next;
else
m++;
}
n++;
}
next: key=num[n][m];
bz=1;
if(key==14)
mark=1;
}
P1=0XF0;
}