请教大神
这是个数码管显示0-7的程序,怎么改为动态数码管显示0-7从左到右来回显示的程序 用定时器中断。
#include "reg52.h"
typedef unsigned int u16;
typedef unsigned char u8;
sbit LSA=P2^2;
sbit LSB=P2^3;
sbit LSC=P2^4;
u8 code smgduan[17]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void Timer0Init()
{
TMOD|=0X01;
TH0=0XFC;
TL0=0X18;
ET0=1;
EA=1;
TR0=1;
}
void main()
{
Timer0Init();
while(1)
{
}
}
void Timer0() interrupt 1
{ u8 i;
static u16 j;
TH0=0XFC;
TL0=0X18;
// j++;
for(i=0;i<8;i++)
{
switch(i)
{
case(0):
LSA=0;LSB=0;LSC=0; break;
case(1):
LSA=1;LSB=0;LSC=0; break;
case(2):
LSA=0;LSB=1;LSC=0; break;
case(3):
LSA=1;LSB=1;LSC=0; break;
case(4):
LSA=0;LSB=0;LSC=1; break;
case(5):
LSA=1;LSB=0;LSC=1; break;
case(6):
LSA=0;LSB=1;LSC=1; break;
case(7):
LSA=1;LSB=1;LSC=1; break;
}
P0=smgduan[i];
for (j=20;j>0;j--);
P0=0x00;
}
}
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