关于GPIO0设置为中断的问题

平台：C6678
板子：公司自己的板子
问题：
硬件工程师说，他们将GPIO0的电压拉低后，应该C6678就要收到中断。
软件这边进行这样的设置：
1.设置GPIO的中断使能位为1，代码为*(UInt*)(0x2320008)= 0x1;
2.创建HWI，代码为：
/* 初始化硬件中断参数 */
Hwi_Params_init(&hwiParams);
hwiParams.eventid = DDSP_SEM_INTC_EVENT_ID;
hwiParams.maskSetting = Hwi_MaskingOption_SELF;
/* 创建硬件中断 */
hwiParams.eventId = 4;
hwiHandle = Hwi_create(4,hostIsrHandler,&hwiParams,NULL);
hwiParams.eventId = 5;
hwiHandle = Hwi_create(5,hostIsrHandler,&hwiParams,NULL);
hwiParams.eventId = 6;
hwiHandle = Hwi_create(6,hostIsrHandler,&hwiParams,NULL);
hwiParams.eventId = 7;
hwiHandle = Hwi_create(7,hostIsrHandler,&hwiParams,NULL);
hwiParams.eventId = 8;
hwiHandle = Hwi_create(8,hostIsrHandler,&hwiParams,NULL);
hwiParams.eventId = 9;
hwiHandle = Hwi_create(9,hostIsrHandler,&hwiParams,NULL);
hwiParams.eventId = 11;
hwiHandle = Hwi_create(11,hostIsrHandler,&hwiParams,NULL);
hwiParams.eventId = 12;
hwiHandle = Hwi_create(12,hostIsrHandler,&hwiParams,NULL);
hwiParams.eventId = 13;
hwiHandle = Hwi_create(13,hostIsrHandler,&hwiParams,NULL);
hwiParams.eventId = 15;
hwiHandle = Hwi_create(15,hostIsrHandler,&hwiParams,NULL);
在hostIsrHandler中添加打印，并有断点，hostIsrHandler没有被调用。
请问，还有什么没有完成初始化嘛？为什么中断没有进来？谢谢，在出差很急坐等。谢谢。