RTI Timer Interrupt Not Work (Delay)

I have a tms570ls3137 hdk board. I want to make delay with timer. I can create delay without timer but i want to use that way.

I read TI rti application notes and i wrote that codes...Assume i added all headers and C files (halcogen v3.1.1).

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Main.c file;

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void timer()

{

rtiEnableNotification(rtiNOTIFICATION_COMPARE2);

rtiStartCounter(rtiCOUNTER_BLOCK0);

}

void main()

{

hetInit();

rtiInit();

_enable_FIQ();

_enable_IRQ();

hetPORT1->DIR = 0x80000001;

while(1){

hetPORT1->DOUT = 0x00000001;

hetPORT1->DSET = 0x00000001;

timer();

}

}

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And notification.c file;

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void rtiNotification(uint32_t notification)

{

hetInit();

hetPORT1->DIR = 0x80000001;

hetPORT1->DOUT = 0x80000000;

hetPORT1->DSET = 0x80000000;

}

I am sure codes are true. But not work :(