單片機(jī)中斷實(shí)驗(yàn)3

電路圖：

代碼如下：

#include

#include

sbit p1_0 = P1^0;

sbit p1_1 = P1^1;

void delay (void) {

int a = 500;

while(a--) _nop_();

}

void LED_01() interrupt 0 using 1 {

delay();

if (INT0 == 0) {

p1_0 = !p1_0;

while (INT0 == 0);

}

}

void LED_02() interrupt 2 using 1 {

delay ();

if (INT1 == 0) {

p1_1 = !p1_1;

while (INT1 == 0);

}

}

void main () {

p1_0 = 0;

p1_1 = 0;

EA = 1;

EX0 = 1;

EX1 = 1;

PX0 = 0; //中斷比px1低 當(dāng)高位中斷進(jìn)行時(shí)，低位中斷不能打斷高位的中斷

PX1 = 1; //中斷比px0高 當(dāng)?shù)臀恢袛噙M(jìn)行時(shí)，高位中斷可以打斷低位中斷

while(1);

}