troubles on nichestack tcpip example

thank you. I have solved this problem, i changed the code ----get_board_mac_addr() in iniche_init.c, so i can assign the mac value directly,then it works. the changed code as follow:

changing code:

/*

* get_board_mac_addr

*

* Read the MAC address in a board specific way

*

*/

error_t get_board_mac_addr(unsigned char mac_addr[6])

{

error_t error = 0;

alt_u32 signature;

/* Get the flash sector with the MAC address. */

error = FindLastFlashSectorOffset(&last_flash_sector_offset);

if (!error)

last_flash_sector = EXT_FLASH_BASE + last_flash_sector_offset;

/* This last_flash_sector region of flash is examined to see if

* valid network settings are present, indicated by a signature of 0x00005afe at

* the first address of the last flash sector. This hex value is chosen as the

* signature since it looks like the english word "SAFE", meaning that it is

* safe to use these network address values.

*/

/* //delete this code

if (!error)

{

signature = IORD_32DIRECT(last_flash_sector, 0);

if (signature != 0x00005afe)

{

error = generate_and_store_mac_addr();

}

}

*/ //delete this code

if (!error)

{

mac_addr[0] = IORD_8DIRECT(last_flash_sector, 4);

mac_addr[1] = IORD_8DIRECT(last_flash_sector, 5);

mac_addr[2] = IORD_8DIRECT(last_flash_sector, 6);

mac_addr[3] = IORD_8DIRECT(last_flash_sector, 7);

mac_addr[4] = IORD_8DIRECT(last_flash_sector, 8);

mac_addr[5] = IORD_8DIRECT(last_flash_sector, 9);

printf("Your Ethernet MAC address is %02x:%02x:%02x:%02x:%02x:%02x\n",

mac_addr[0],

mac_addr[1],

mac_addr[2],

mac_addr[3],

mac_addr[4],

mac_addr[5]);

}

return error;

}