單片機(jī)中斷實(shí)驗(yàn)4

delay0_5s1();

}

//int_0

//外部中斷0中斷函數(shù),緊急情況處理,當(dāng)cpu響應(yīng)外部中斷0的中斷請求時(shí),自動(dòng)執(zhí)行該函數(shù),實(shí)現(xiàn)兩個(gè)方向的紅燈同時(shí)亮10s

void int_0 () interrupt 0 {

unsigned char i,j,k,l,m;

i = P1; //保護(hù)現(xiàn)場,暫存P1, t0, t1, TH1, TL0;

j = t0;

k = t1;

l = TH1;

m = TL1;

P2 = 0xdb; //兩個(gè)方向都是紅燈

delay_t1 (20); //延時(shí)10s

P2 = i;

t0 = j;

t1 = k;

TH1 = 1;

TL1 = m;

}

//int_1

//功能:外部中斷1中斷函數(shù), 特殊情況處理,當(dāng)cpu,當(dāng)cpu響應(yīng)外部中斷1的中斷請求時(shí), 自動(dòng)執(zhí)行該函數(shù),實(shí)現(xiàn)a到放行5s

void int_1 () interrupt 2 {

unsigned char i,j,k,l,m;

EA = 0;

i = P1;

j = t0;

k = t1;

l = TH1;

m = TL1;

EA = 1;

P2 = 0xf3;

delay_t1 (10);

EA = 0;

P2 = i;

t0 = j;

t1 = k;

TH1 = l;

TL1 = m;

EA = 1;

}

void main () {

unsigned char k;

TMOD = 0x10; //T1在工作方式1

EA = 1; //開總中斷

EX0 = 1;

IT0 = 1;

EX1 = 1;

IT1 = 1;

while (1) {

P2 = 0xf3;

delay0_5s1();

P2 = 0xfb;

delay0_5s1();

}

P2 = 0xeb;

delay_t1(4);

P2 = 0xde;

delay_t1(110);

for (k=0; k<3; k++) {

P2 = 0xde;

delay0_5s1();

P2 = 0xdf;

delay0_5s1();

}

P2 = 0xdd;

delay_t1(4);

}