write file .txt to sd card on DE2

you can try this code :

int main()

{

device_reference = alt_up_sd_card_open_dev("/dev/SD");

if (device_reference != NULL)

{

if ((connected == 0) && (alt_up_sd_card_is_Present()))

{

printf("Card connected.\n");

if (alt_up_sd_card_is_FAT16())

printf("FAT16 file system detected.\n");

else

printf("Unknown file system.\n");

connected = 1;

}

else if ((connected == 1) && (alt_up_sd_card_is_Present() == false))

{

printf("Card disconnected.\n");

connected = 0;

}

}

//===============ghi file text================

file_handle = alt_up_sd_card_fopen(name, true);

if (file_handle == -1)

printf("file could not be open.\n");

else if ((file_handle == -2))

printf("file is already open.\n");

else

printf("file be open.\n");

for(j=0; j< 24; j++)

{

hum= alt_up_sd_card_write(file_handle,ag[j]);

}

if (hum == true)

printf ("successful. \n");

alt_up_sd_card_fclose(file_handle);

return 0;

}