IAR环境下LPC开发板中断

#include <iolpc2148.h> #include <inarm.h> #define Fosc 10000000 #define Fcclk (Fosc * 4) #define Fcco (Fcclk * 4) #define Fpclk (Fcclk / 4) * 1 void PLLInit(void) { PLLCON = 1; VPBDIV = 0; PLLCFG = ((Fcclk / Fosc) - 1) | (1 << 5); PLLFEED = 0xAA; PLLFEED = 0x55; while((PLLSTAT&(0x1<<10)) == 0); PLLCON = 3; PLLFEED = 0xAA; PLLFEED = 0x55; } void delay(int times) { int i, j; for(i=0; i<100; i++) for(j=times; j>0; j--) ; } //LED #pragma vector = 0x18 __irq void irq_handler(void) { //delay(1000); if((IO1PIN&(0x1<<16))==0) IO1SET |= 0X1<<16; else IO1CLR |= 0x1<<16; EXTINT = 0x1; VICVectAddr = 0X0; } //BEEP #pragma vector = 0x1C __irq void fiq_handler(void) { IO0SET |= 0X1 << 7; delay(50); IO0CLR |= 0X1 << 7; EXTINT = 0x4; VICVectAddr = 0X0; } void VICInit() { __disable_interrupt(); VICIntSelect |= 0x1 << 16;//外部中断2 设置为1 fiq触发 VICIntSelect &= ~(0x1 << 14);//外部中断0 设置为0 非fiq触发 //VICVectAddr = (unsigned long)fiq_handler; VICDefVectAddr = (unsigned long)irq_handler; EXTPOLAR &= ~0X5; EXTMODE &= ~0X4;//蜂鸣器设置为电低平触发 EXTMODE |= 0X1;//LED设置为下降沿触发 VICIntEnable = (0x1 << 16) | (0x1 << 14); __enable_interrupt(); } int main() { //FIQ相关设置 PINSEL0 &= ~(0X3 << 14);//设置P0.7（Beep）为GPIO PINSEL0 = (PINSEL0 & ~(0X3 << 30)) | (0X1 << 31);//设置P0.15（S4）为ENT2 IO0DIR |= 0X1 << 7;//蜂鸣器设置为输出 IO0DIR &= ~(0X1 << 15);//S4设置为输入 //非RIQ相关设置 PINSEL1 &= ~(0X3 << 16);//设置P1.16（LED）为GPIO PINSEL1 = (PINSEL1 & ~0X3) | 0X1;//设置P0.16（S5）为ENT0 IO1DIR |= 0X1 << 16;//LED设置为输出 IO0DIR &= ~(0X1 << 16);//S5设置为输入 IO1SET |= 0X1<<16; PLLInit(); VICInit(); while(1); }