interrupts.c

lpc2148芯片实时时钟c程序

#include "interrupts.h"

/**** 中断初始化函数 ****/
void InitEINT0Interrupt() {
  VICIntSelect &= ~VIC_EINT0_bit;     // IRQ on EINT0 line.
  VICVectAddr2 = (unsigned int)&EINT0Interrupt;
  VICVectCntl2 = 0x20 | VIC_EINT0;    // 允许EINT0向量中断
  VICIntEnable |= VIC_EINT0_bit;      // EINT0开中断
}

void InitEINT2Interrupt() {
  VICIntSelect &= ~VIC_EINT2_bit;     // IRQ on EINT2 line.
  VICVectAddr4 = (unsigned int)&EINT2Interrupt;
  VICVectCntl4 = 0x20 | VIC_EINT2;    // 允许EINT2向量中断
  VICIntEnable |= VIC_EINT2_bit;      // EINT2开中断
}

void InitRTCInterrupt() {
  VICIntSelect &= ~VIC_RTC_bit;       // IRQ on RTC line.
  VICVectAddr5 = (unsigned int)&RTCInterrupt;
  VICVectCntl5 = 0x20 | VIC_RTC;      // 允许RTC向量中断
  VICIntEnable |= VIC_RTC_bit;        // RTC开中断
}