AT89C51单片机数码管闪烁问题怎么解决0

LJbobo2018.05.04浏览32次分享举报

#include#defineu8unsignedchar#defineu16unsignedintsbitdula=P2^6;//段选信号的锁存器控制sbitwela=P2^7;//位选信号的锁存器控制u8codewei[]={0x7f,0xbf,0xdf,0xef,0xf7,0... #include

#define u8 unsigned char

#define u16 unsigned int

sbit dula=P2^6;//段选信号的锁存器控制

sbit wela=P2^7;//位选信号的锁存器控制

u8 code wei[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};//数码管各位的码表

u8 code duan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x00};//0-f的码表

u8 dis_shu[8]={0};

bit dis_flag=0;

u8 lcd_state=0;

u8 dis_time_count=0;

//******数码管显示函数***********//

void display(long num)

{

long i,weishu;

for(weishu=0,i=num;i;weishu++)

{

i=i/10;

}

for(i=weishu;i;i--)

{

dis_shu[8-i]=num%10;

num=num/10;

}

for(i=weishu;i<8;i++)

{

dis_shu[7-i]=9;

}

if(dis_flag==1)

{

dis_flag=0;

switch(lcd_state)

{

case 0:dula=1;P0=duan[dis_shu[lcd_state]];dula=0;P0=0x00;wela=1;P0=wei[lcd_state];wela=0;break;

case 1:dula=1;P0=duan[dis_shu[lcd_state]];dula=0;P0=0x00;wela=1;P0=wei[lcd_state];wela=0;break;

case 2:dula=1;P0=duan[dis_shu[lcd_state]];dula=0;P0=0x00;wela=1;P0=wei[lcd_state];wela=0;break;

case 3:dula=1;P0=duan[dis_shu[lcd_state]];dula=0;P0=0x00;wela=1;P0=wei[lcd_state];wela=0;break;

case 4:dula=1;P0=duan[dis_shu[lcd_state]];dula=0;P0=0x00;wela=1;P0=wei[lcd_state];wela=0;break;

case 5:dula=1;P0=duan[dis_shu[lcd_state]];dula=0;P0=0x00;wela=1;P0=wei[lcd_state];wela=0;break;

case 6:dula=1;P0=duan[dis_shu[lcd_state]];dula=0;P0=0x00;wela=1;P0=wei[lcd_state];wela=0;break;

case 7:dula=1;P0=duan[dis_shu[lcd_state]];dula=0;P0=0x00;wela=1;P0=wei[lcd_state];wela=0;break;

default:break;

}

lcd_state=(++lcd_state)%8;

}

}

//********定时器0中断处理函数********//

void Timer0() interrupt 1

{

dis_time_count++;

if(dis_time_count==2)

{

dis_time_count=0;

dis_flag=1;

}

TH0=0xfc;

TL0=0x18;//中断10us

}

//********定时器0初始化函数********//

void time0init()

{

TMOD=0x01;

TH0=0xfc;

TL0=0x18;//中断10us

ET0=1; //允许T0中断

TR0=1; //开启定时器

EA=1; //开启总中断

}

void main()

{

time0init();

dula=0;

wela=0;

while(1)

{

display(678);

}

} 展开