AVR Int0 interrupt C language programming-EEWORLD

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#include

#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; //Set port A to input without pull-up;
PORTA=0xff;
DDRC=0xff; //Set port C to push-pull 1 output;
PORTC=0xff;
DDRD=0xff; //Set port D to pull-up input
PORTD=0xff;
PORTA=0xff;
PORTC=0x00;
DelayMs(10000);
MCUCR=0x00;//Falling edge
GIMSK=0x40;//int0
GIFR=0xff;
SREG=SREG|0x80;
while(1){Display(Da ta1);} /*{if((GIFR&0x40)==0x40) {GIFR=0xff;Display(Da ta);} else }*/ } #pragma interrupt_handler int0:2 void int0(void) {Display (Da ta1);}
/*{if((GIFR&0x40)==0x40) {GIFR=0xff;Display(Da ta);}
else
}*/
} ta);}

Keywords：AVR Reference address：AVR Int0 interrupt C language programming

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