#include <reg52.h>
unsigned char dispbuf[8];
unsigned char temp[8];
unsigned char T0count;
unsigned char timecount;
sbit EN=P2^0;
sbit RS=P2^1;
sbit RW=P2^2;
bit flag;
unsigned long x;
unsigned int num;
unsigned char i;
void delay1ms(unsigned int ms)//延时1毫秒（不够精确的）
{
unsigned int i,j;
for(i=0;i<ms;i++)
for(j=0;j<100;j++);
}
void write_command(unsigned char command)//写指令//
{
delay1ms(1);
RS=0;
RW=0;
EN=0;
P0=command;
delay1ms(1);
EN=1;
delay1ms(1);
EN=0;
}
void write_data(unsigned char date)//写数据//
{
delay1ms(1);;
RS=1;
RW=0;
EN=0;
P0=date;
delay1ms(1);
EN=1;
delay1ms(1);
EN=0;
}
void init()
{
EN=0;
write_command(0x38);
write_command(0x0c);
write_command(0x06);
write_command(0x01);
}
void main(void)
{
TMOD=0x15;
TH0=0;
TL0=0;
TH1=(65536-5000)/256;
TL1=(65536-5000)%256;
ET0=1;
ET1=1;
EA=1;
init();
write_command(0x80+0x04);
TR1=1;
TR0=1;
while(1)
{
if(flag==1)
{
flag=0;
x=T0count*65536+TH0*256+TL0;
for(i=0;i<8;i++)
{
temp[i]=0;
}
i=0;
while(x/10)
{
temp[i]=x%10;
x=x/10;
i++;
};
temp[i]=x;
for(i=0;i<8;i++)
{
dispbuf[i]=temp[i];
}
timecount=0;
T0count=0;
TH0=0;
TL0=0;
TR0=1;
}
}
}
void t0(void) interrupt 1 using 0
{
T0count++;
}
void t1(void) interrupt 3 using 0
{
TH1=(65536-5000)/256;
TL1=(65536-5000)%256;
timecount++;
if(timecount==200)
{
TR0=0;
timecount=0;
flag=1;
}
for(num=7;num<=0;num--)
{
write_data(dispbuf[num]);
delay1ms(1);
}
} |
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