int0test._c

AVRkaifashili.rar

#include<io8535v.h>
#define uchar unsigned char
#define uint  unsigned int


uchar Table[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar Data[4]={0,7,2,8};
uchar Data1[4]={1,1,1,1};
void DelayMs(uint i)  //0.25ms
{uchar j;
 for(;i!=0;i--)
  {for(j=250;j!=0;j--) {;}}
}

void Display(uchar *p) //间隔5ms显示
{uchar i,sel=0x01;
 for(i=0;i<4;i++)
  {PORTA=sel;
   PORTC=0xff-Table[p[i]];
   DelayMs(20);
   sel=sel<<1;
  }
}

void main(void)
{uint i;
 DDRA=0xff;                    //设置A口为不带上拉输入；
 PORTA=0xff;
 DDRC=0xff;                    //设置C口为推挽1输出；
 PORTC=0xff;
 DDRD=0xff;                    //设置D口为上拉输入
 PORTD=0xff;
 PORTA=0xff;
 PORTC=0x00;
 DelayMs(10000);
 MCUCR=0x00;//下降沿
 GIMSK=0x40;//int0
 GIFR=0xff;
 SREG=SREG|0x80;
 while(1){Display(Data1);}
 /*{if((GIFR&0x40)==0x40)   {GIFR=0xff;Display(Data);}
  else 
  }*/
}
 #pragma interrupt_handler int0:2
 void int0(void)
 {Display(Data);}