下面是我今天早上寫的外部中斷， 已經運行還可以
#include<iom128v.h>
#include<macros.h>
#define uchar unsigned char
#define uint unsigned int
#pragma interrupt_handler INT0_ISR:2 //ÏÂÃæμÄcodeò2¿éòÔ
//#pragma interrupt_handler INT0_ISR:iv_INT0
#pragma interrupt_handler INT1_ISR:3 //ÏÂÃæμÄcodeò2¿éòÔ
//#pragma interrupt_handler INT1_ISR:iv_INT1
uint count,num;
const uchar table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x40};
void delay(uint ms);
void port_Init(void);
void ExternalInterrupt_init(void);
void Numerical_display(uchar m, uchar n);
void main(void)
{
port_Init();
ExternalInterrupt_init();
while(1)
{
Numerical_display(num/1000,0);
Numerical_display(num/100%10,1);
Numerical_display(num/10%10,2);
Numerical_display(num%10,3);
Numerical_display(count/1000,4);
Numerical_display(count/100%10,5);
Numerical_display(count/10%10,6);
Numerical_display(count%10,7); //μ÷óÃoˉêy￡¬ÏÔê¾
}
}
void INT0_ISR() //ÖD¶Ï0·tÎñ3ìDò
{
count++;
if(count==9999)
count=0;
}
void INT1_ISR() //ÖD¶Ï1·tÎñ3ìDò
{
num++;
if(num==9999)
num=0;
}
void delay(uint ms)
{
uint i,j;
for (i=0; i<ms; i++);
for (j=0;j<1500;j++);
}
void port_Init(void)
{
PORTA=0xFF; //êy¾Y¿úÎaêä3ö
DDRA=0xFF;
PORTD=0xFF; //Pull up;
DDRD|=0xF0; //set the PORT as input
}
void ExternalInterrupt_init(void)
{
EICRA=0x0a; //falling edge trigger
// EICRA=0x0f; //rising edge trigger
EIMSK|=0x03; //Enable INT0 and INT1
MCUCSR=0x00; //¿ØÖÆoí×′쬼Ä′æÆ÷3õê¼»ˉ
EIFR|=0x03;
SREG|=BIT(7);
}
void Numerical_display(uchar m, uchar n)
{
PORTD|=BIT(4);
PORTA=table[m];
PORTD&=~BIT(4);
PORTA=0xff;
PORTA&=~BIT(n);
PORTD|=BIT(5);
PORTD&=~BIT(5);
delay(2);
}
|
QQ好友和群
QQ空間
騰訊微博
騰訊朋友
收藏
淘帖
頂
踩
