write .bmp on sd card by ip sd card controller

my code:

//================# include <io.h># include <system.h># include <stdio.h># include "gui.h"# include "altera_up_sd_card_avalon_interface.h"

struct image images[MAX_NUM_IMAGES];

struct image *current_image;

struct image *prev_image = NULL;

int num_images = 0;

int current_image_num = 0;

short int file_handle1;

char name1[] = "filexx.bmp";

// send image on Sdram to Sram_frame_buffer

void send_image(int direction)

{

current_image = (direction == 2) ? current_image->next :

current_image->prev;

printf("current image: %d\n", current_image->image_num);

int i = current_image->image_num;

printf("sending image\n");

unsigned char byte_r, byte_g, byte_b;

int pixel;

int x, y;

int x_start = 0;

int x_end = IMG_X_SIZE;

int x_inc = 1;

for (x = x_start; x < x_end ; x += x_inc)

{

for(y = 0; y < IMG_Y_SIZE; y += 1)

{

// send request

IOWR_16DIRECT(TV_TO_VGA_0_BASE, 16, 1);

// set requested x and y positions

IOWR_16DIRECT(TV_TO_VGA_0_BASE, 10, x);

IOWR_16DIRECT(TV_TO_VGA_0_BASE, 12, y);

// get pixel from memory

byte_r = saved_images[0][y][x];

byte_g = saved_images[1][y][x];

byte_b = saved_images[i][2][y][x];

if (num_images == 0)

pixel = 0;

else

pixel = ((byte_r >> 3) << 11) | ((byte_g >> 2) << 5) |((byte_b >> 3) << 0);

// send pixel

IOWR_16DIRECT(TV_TO_VGA_0_BASE, 14, pixel);

// reset request

IOWR_16DIRECT(TV_TO_VGA_0_BASE, 16, 0);

}

}

printf("sent\n");

}