iar7-2.c

手把手教你学AVR单片机C程序设计实验程序

#include<iom16.h>	
#define uchar unsigned char
#define uint unsigned int
__flash uchar SEG7[10]={0x3f,0x06,0x5b,0x4f,0x66,	
                0x6d,0x7d,0x07,0x7f,0x6f};
__flash uchar ACT[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};	
#define BZ_0  (PORTD=PORTD&0xdf)
#define BZ_1  (PORTD=PORTD|0x20)
uchar cnt0=0,cnt1=0;
//=============================
void delay_ms(uint k)
{
    uint i,j;			
    for(i=0;i<k;i++)
    {
       for(j=0;j<1140;j++)
       ;
    }
}
//=============================
void main(void)
{	
DDRA=0xff;	
PORTA=0x00;	  
DDRC=0xff;	
PORTC=0xff;	
DDRD=0xf3;	
PORTD=0xff;	
MCUCR=0x0a;
GICR=0xc0; 
SREG=0x80;	
   while(1)	
   {		
   PORTA=SEG7[cnt1%10];PORTC=ACT[0];
   delay_ms(1);
   PORTA=SEG7[cnt1/10];PORTC=ACT[1];
   delay_ms(1); 
   //--------------------------
   PORTA=SEG7[cnt0%10];PORTC=ACT[6];
   delay_ms(1);
   PORTA=SEG7[cnt0/10];PORTC=ACT[7];
   delay_ms(1); 
   }			
}				
//*****************************
#pragma vector=INT0_vect
__interrupt void int0_isr(void)
{
 if(++cnt0>99)cnt0=99;
}
//*****************************
#pragma vector=INT1_vect
__interrupt void int1_isr(void)
{
 if(++cnt1>99)cnt1=99;
}