配置有问题吗？

2万 · 2021-2-5 21:36

//-------------------------------------------------------------------------
void init_exint2(void)
{
//P0.6:INT2---input port & pull high
      P0CR &= ~BIT_6;
      P0PCR |= BIT_6;

      //IT3=1;//falling edge trig
      //IE0=0;
      //IPH0|=0x01;//PX0H //exint 0 interrupt priority 2
      //priority affect timer3
#if 1
      IT20=0;
      IT21=1;//rising edge trigger
#else
      IT20=1;
      IT21=0;//falling edge trigger
#endif
      IE2=0;
//--interrupt priority
      //IPL1|=BIT_1;
      //IPH1|=BIT_1;

      IEN1|=BIT_1;//enable external interrupt 2
}

//-------------------------------------------------------------------------

void exint2(void) interrupt 8  //IR
{

}

中断2死活进不去