搁浅中...求帮助

只看该作者 · 2011-5-29 16:26

本帖最后由 tingbaby_zj 于 2011-5-29 17:09 编辑

调试外部中断唤醒掉电程序时，遇到一个问题；程序实现掉电唤醒时蜂鸣器鸣响切换；

#define BEEP 1<<7;
/******************************************
**
*******************************************/
void __irq IRQ_Eint0(void)
{
while((EXTINT & 0X01)!=0)
{
  EXTINT = 0X01;
}
VICVectAddr =0;
}
int main (void)
{
PINSEL0 = 0X00000000;
PINSEL1 = 0X00000001;
IO0DIR  = BEEP;

IRQEnable();

VICIntSelect = 0x00000000;
VICVectCntl0 = 0x20|14;
VICVectAddr0 = (uint32)IRQ_Eint0;
VICIntEnable = 1<<14;

EXTWAKE = 0x01;
EXTINT  = 0x01;

IO0SET =BEEP;

while(1)
{
  PCONP = 0x00;
   PCON  = 0x02;
   if((IO0SET & BEEP)==0) { IO0SET = BEEP;}
      else IO0CLR = BEEP;

}
return 0;
}

调试时，在 if((IO0SET & BEEP)==0) { IO0SET = BEEP;}
      else IO0CLR = BEEP;
出现以下错误提示：
ERROR:(serious)C2282e：expected ‘）’-inserted before ‘；’
ERROR:(serious)C2282e：<command> expected  but found ')'
ERROR:(serious)C2282e：misplaced 'else' ignored