單片機(jī)+數(shù)碼管顯示不穩(wěn)

ID:711481 · 發(fā)表于 2020-7-4 22:06

把數(shù)碼管顯示放在中斷里面，然后再開一個定時器(定時一秒，用于蜂鳴器計時)按下一號按鍵，數(shù)碼管亮，按下二號按鍵蜂鳴器響一秒(此時數(shù)碼管還亮，)復(fù)位后都不反應(yīng)，程序?qū)懲曛螅蜷_數(shù)碼管的時候，顯示不穩(wěn)，閃爍，這是怎么了
  #include<reg51.h>
#define uchar unsigned char
uchar  smg[]={0xc0,0xf9,0xa4,0xb0};
sbit a1=P2^0;
sbit a2=P2^1;
sbit a3=P2^2;
sbit a4=P2^3;
sbit feng=P2^5;
sbit jian0=P3^2;
sbit jian1=P3^3;

void delay1()
{
uchar k;
for(k=20;k>0;k--)
{
                  TH1=(65536-50000)/256;
         TL1=(65536-50000)%256;
               while(TF1==0);
               TF1=0;
               }
}
void delay()
{
   int i;
         for(i=600;i>0;i--);
}
void main()
{
TMOD=0X11;
      TH0=(65536-5)/256;
      TL0=(65536-5)%256;
      TH1=(65536-50000)/256;
      TL1=(65536-50000)%256;

      TR1=1;
      EA=1;
      ET0=1;
while(1)
{

                     if(jian1==0)
      {
         delay();
         if(jian1==0)
      {
         while(!jian1);
            TR0=1;
      }
      }

                     if(jian0==0)
      {
         delay();
         if(jian0==0)
      {
         while(!jian0);
         feng=0;
            delay1();
            feng=1;
      }
      }
      }
}
void t0(void) interrupt 1
{
                  a1=0;
            P0=smg[2];
      delay();
      a1=1;

                  a2=0  ;
            P0=smg[0];
      delay();
      a2=1;

                  a3=0;
            P0=smg[0];
      delay();
      a3=1;

                  a4=0;
            P0=smg[3];
         delay();
      a4=1;
}