Why there is no HWI generated in this ezDSP5535 USB

Hi,

I create a simple ezDSP5535 DSP/BIOS project, but there is no HWI interrupt generated.

Here is the code. I expect the keys (SW1, SW2) can trigger a gpio interrupt, which post a SWI. Then SWI has a LOG_printf output.

I set a breakpoint inside gpioISR, but nothing occurs.

I have used EZDSP5535_GPIO_init() to initialize GPIO. Are there anything I forget?

Thanks,

3036.ezDSP5535_switch_BIOS.zip

Void swiFxn0(Void);
Void task(Arg id_arg); /* Function for tasks created with Config Tool */ 
/** Interrupt Service Routine */
//interrupt void sarISR(void);
void sarISR(void);
void gpioISR(void);
extern void EZDSP5535_GPIO_init();

/*
* ======== main ========
*/
Void main()
{/*
Bool flag = 1;
CSL_SarChSetup param;*/

EZDSP5535_GPIO_init();
HWI_enable();
// SWI_post(&SWI0);
LOG_printf(&trace,"Main done!\n");
}

void gpioISR(void)
{
SWI_post(&SWI0);
;
}

void sarISR(void)
{
;
}

/*
* ======== swiFxn0 ========
*/
Void swiFxn0(Void)
{
LOG_printf(&trace,"swiFxn0 posts SWI1\n");
// SWI_post(&SWI1);
LOG_printf(&trace,"SWI0 done!\n");
}