irq.zip_中断_外部中断

#include <lpc210x.h> #define FOSC 10000000 #define FCCLK 40000000 //FOSC*4 #define FCCO FCCLK*4 #define FPCLK (FCCLK/4) //10MHZ so if time = 20ms ,T = 1/10MHZ = 0.1us, mr1 = 20/0.1us so 200000 void delay(int n) { int i,j; for(i=0;i<n;i++) { for(j=0;j<100;j++); } } const unsigned char swg_num[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; void Init_pll() { PLLCON = 0x1; VPBDIV = 0x0; PLLCFG = ((FCCLK/FOSC)-1)|(0x2<<5); PLLFEED = 0XAA; PLLFEED = 0X55; while((PLLSTAT&0x1<<10)==0) { } PLLCON |= 0x2; PLLFEED = 0XAA; PLLFEED = 0X55; } void Set_num(int n) { int i = 0; int tem,wei; tem = n; do { wei = tem%10; tem = tem/10; IOSET = 0xff; IOCLR = swg_num[wei]; IOCLR = 0xf<<8; IOSET = 0x1<<(8+i); delay(1000); i++; }while(tem!=0) ; } int count = 1111; int flag = 0; int flag1 = 0; /*__irq void Int_isr2(void) { count++; if(count == 2000) { count = 0; } Set_num(count); delay(500); IOCLR = 0xff; VICVectAddr = 0x0; }*/ __irq void Int_isr1(void) { count++; if(count == 2000) { count = 0; } IOSET = 0xff; /*Set_num(count); //delay(900000); IODIR |= 0x1<<12; if(flag1 == 0) { IOSET = 0x1<<12; flag1 = 1; } else { IOCLR = 0x1<<12; flag1 = 0; } */ while((EXTINT&0x1)!=0) { EXTINT = 0x1; } VICVectAddr = 0x0; } __irq void Int_isr(void) { IODIR |= 0x1<<7; if(flag == 0) { IOSET = 0x1<<7; flag = 1; } else { IOCLR = 0x1<<7; flag = 0; } // while((EXTINT&0x1)!=0) // { // EXTINT = 0x1; //} T1IR = 0x1; VICVectAddr = 0x0; } int main () { Init_pll(); PINSEL0 &= ~0x3fff; IODIR |= 0xfff; PINSEL1 |=0x1; T0TC = 0x0; T0PR = 0x0; T1TC = 0x0; T1PR = 0x0; //地 T0MR0 = 100000; T1MR1 = 200000; T0MCR = 0x3; T1MCR |= (0x3<<3); IODIR &= ~(0x1<<16); VICIntSelect = 0x0; VICVectCntl1 = (0x1<<5)|14; VICVectAddr1 = (unsigned long)Int_isr1; VICVectAddr3 = (unsigned long)Int_isr; // VICVectAddr2 = (unsigned long)Int_isr2; // VICVectCntl2 = (0x1<<4)|4; VICVectCntl3 = (0x1<<5)|5; EXTPOLAR &= ~0x1; EXTMODE &= ~0x1; EXTINT = 0x1; VICIntEnable |= (0x1<<14);//|(0x1<<5) |(0x1<<4) T0TCR = 0x1; T1TCR = 0x1; while(1) { Set_num(count); } }