你好！有个问题要麻烦您一下。
我在用你们的bf54x开发板，我参考你们的bf54X的设计说明书的例程写了一段使用GPIO做为外部中断输入的程序。测试了一下，进不了中断子程序。能不能麻烦你帮我看一下程序哪有问题，是不是还少了需要设置的地方。谢谢！

void Init_DM9000(void)//设置DM9000的中断 1p624例程
{
*pPORTA_FER &= ~PA15; //1p594 INT PA15  GPIO mode
*pPORTA_INEN |= PA15;//1p599 PA15 Input Enable
*pPORTA_DIR_SET &= ~PA15;//1p597 Output disabled

register_handler(ik_ivg7, IsrPA15);//assign PINT0 interrupt to IVG7
*pSIC_IAR2 = 0xFFFF0FFFL;//1p235 Pin Interrupt 0
*pSIC_IMASK0 = PA15;//1p241 Pin Interrupt 0 Interrupt enabled
*pPINT0_ASSIGN = 0x0;//1p614 assign PA15 to PINT0 byte 1
// *pPINT0_INVERT_CLEAR = PA15; //1p613 Input inverted, set to raising edge sensitivity
*pPINT0_INVERT_CLEAR &= ~PA15; //1p613 Input inverted, set to raising edge sensitivity
*pPINT0_EDGE_SET = PA15;//1p609 Edge sensitive, set to raising edge sensitivity
*pPINT0_LATCH = PA15;//1p608 清中断标志 W1C potential latches due to history
*pPINT0_MASK_SET = PA15;//1p604 Interrupt enable
// *pPORTA_FER &= ~0x1; //1p594 IOWAIT  PA0  GPIO mode
// *pPORTA_INEN |= 0x1;//1p599 PA0 Input Enable
// *pPORTA_DIR_SET &= ~0x1;//1p597 Output disabled

}
EX_INTERRUPT_HANDLER(IsrPA15)
{
*pPINT0_REQUEST = PA15;//clear interrupt request
}

貌似你写的很复杂，发一个程序，你参考一下吧，很简单：

EX_INTERRUPT_HANDLER(Keyboard)
{  
    if(*pPINT0_IRQ & 0x1)
     printf("key is KEY1\n");
    else if(*pPINT0_IRQ & 0x2)
     printf("key is KEY2\n");
    else if(*pPINT0_IRQ & 0x4)
     printf("key is KEY3\n");  
    
     *pPINT0_REQUEST |= PA0|PA1|PA2;  
}

void main (void)
{
    register_handler(ik_ivg12, Keyboard);
    *pSIC_IMASK0 = IRQ_PINT0;
    *pPORTA_INEN |= PA0|PA1|PA2;
    *pPINT0_ASSIGN = B1MAP_PAH;
    *pPINT0_INVERT_CLEAR |= PA0|PA1|PA2;
    *pPINT0_EDGE_SET |= PA0|PA1|PA2;
    *pPINT0_LATCH |= PA0|PA1|PA2;
    *pPINT0_MASK_SET |= PA0|PA1|PA2;

    while (1);
}

顶一下，谢谢分享