Nios ii

pleaaaase help me

I try to simplify my code just for seven segment but nothing happen in my board .

this is my code :

# include "count_binary.h"

/* Seven Segment Display PIO Functions

* sevenseg_set_hex() -- implements a hex digit map.

*/

# ifdef SEVEN_SEG_PIO_BASE

static void sevenseg_set_hex(int hex)

{

static alt_u8 segments[16] = {

0x81, 0xCF, 0x92, 0x86, 0xCC, 0xA4, 0xA0, 0x8F, 0x80, 0x84, /* 0-9 */

0x88, 0xE0, 0xF2, 0xC2, 0xB0, 0xB8 }; /* a-f */

unsigned int data = segments[hex & 15] | (segments[(hex >> 4) & 15] << 8);

IOWR_ALTERA_AVALON_PIO_DATA(SEVEN_SEG_PIO_BASE, data);

}

# endif

/* static void count_sevenseg()

*

* Display value of 'count' on the Seven Segment Display

*/

static void count_sevenseg()

{

# ifdef SEVEN_SEG_PIO_BASE

sevenseg_set_hex(count);

# endif

}

int main(void){

int __attribute__ ((unused)) wait_time; /* Attribute suppresses "var set but not used" warning. */

int count = 0;

/* Continue 0-ff counting loop. */

while( 1 )

{

usleep(100000);

count_sevenseg();

/*

* If done counting, wait about 7 seconds...

* detect button presses while waiting.

*/

if( count == 0xff )

{

printf("\nWaiting...");

usleep(100000); /* Sleep for 0.1s. */

}

}

count++;

return 0 ;

}