DSP6678 GPIO中断配置

FPGA给DSP发送数据，使用GPIO作为中断，使用管脚0：

问题：

1、FPGA端是使用上升沿或下降沿来触发中断，还是上升沿和下降沿？

2、DSP这边配置是下面这样的么？

void gpioInit(void)
{
int32_t pinNum;
CSL_GpioHandle hGpio;

// Open the CSL GPIO Module 0
hGpio = CSL_GPIO_open (0);

// Disable the GPIO global interrupts
CSL_GPIO_bankInterruptDisable(hGpio, GPIOBANKNUM);

// Clear all falling edge trigger and rising edge trigger
//for (pinNum = GPIO_0; pinNum <= GPIO_15; pinNum++) {
//CSL_GPIO_clearFallingEdgeDetect(hGpio, pinNum);
//CSL_GPIO_clearRisingEdgeDetect (hGpio, pinNum);
//}

// Set all GPIO as input
// GPIOREGS->DIR = GPIOREGS->DIR & 0xffffffff;

// Configure the GPIOs for NAND flash controller communication
// Configure data bus as output
//gpioSetDataBusDirection(GPIO_OUT);

CSL_GPIO_clearFallingEdgeDetect(hGpio, 0);
CSL_GPIO_clearRisingEdgeDetect (hGpio, 0);

// Configure the signal pins direction
//gpioSetDirection(DSP_FPGA_CMD0, GPIO_OUT );
//gpioSetDirection(DSP_FPGA_CMD1, GPIO_OUT );

//gpioSetDirection(DSP_FPGA_STROBE, GPIO_OUT );
gpioSetDirection(0, GPIO_IN );
}