void iap_copy_to_flash (uint8_t* buff, uint32_t flash_addr, uint32_t num_bytes)
{
	uint32_t ram_addr;
	uint8_t sector;
	uint16_t bytes_to_copy, bytes_copied=0;
	uint16_t i, eror=0;
	uint8_t *ext_ram_addr;

	ram_addr = (uint32_t)buff;

	sector = iap_find_sector (flash_addr);

	prepare_sector (sector, sector);
	erase_sector (sector, sector); //48000 - takt


	while (num_bytes)
	{
		if (num_bytes >	sector_offset_to_end)
			bytes_to_copy = sector_offset_to_end;
		else
			bytes_to_copy = num_bytes;


		if (bytes_to_copy > 4096)
			bytes_to_copy = 4096;

		prepare_sector (sector, sector);
		bytes_copied = 0;

		if ( (uint32_t) buff >= 0x80000000 )
		{
			ext_ram_addr = (uint8_t *)buff;
			for (i = 0; i < bytes_to_copy; i++)
			{
				temporary[i] = *ext_ram_addr++ ;
				if (temporary[i] != (uint8_t) i)
					eror++;
			}
			copy_ram_to_flash (flash_addr, (uint32_t)(&temporary[0]), bytes_to_copy);
		}
		else
			copy_ram_to_flash (flash_addr, ram_addr, bytes_to_copy);

		bytes_copied += bytes_to_copy;

		num_bytes -= bytes_copied;
		sector_offset_to_end -=	bytes_copied;
		flash_addr += bytes_copied;
		ram_addr += bytes_copied;

		if (num_bytes && sector_offset_to_end == 0)
		{
			if (sector == 29)
			{
				return;
			}
			sector = iap_find_sector (flash_addr);
			prepare_sector (sector, sector);
			erase_sector (sector, sector);
		}
	}
}