static void FSMC_BANK3_MspInit(void)
{
  GPIO_InitTypeDef GPIO_Init_Structure;
    
  /* Enable FSMC clock */
  __FSMC_CLK_ENABLE();

  /* Enable GPIOs clock */
  __GPIOD_CLK_ENABLE();   __GPIOE_CLK_ENABLE();
  __GPIOF_CLK_ENABLE();  __GPIOG_CLK_ENABLE();
  
  /* Common GPIO configuration */
  GPIO_Init_Structure.Mode      = GPIO_MODE_AF_PP;
  GPIO_Init_Structure.Pull      = GPIO_PULLUP;
  GPIO_Init_Structure.Speed     = GPIO_SPEED_HIGH;
  GPIO_Init_Structure.Alternate = GPIO_AF12_FSMC;
  
  /* GPIOD configuration */
  GPIO_Init_Structure.Pin   = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_8     |\
                              GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 |\
                              GPIO_PIN_14 | GPIO_PIN_15;
   
  HAL_GPIO_Init(GPIOD, &GPIO_Init_Structure);

  /* GPIOE configuration */  
  GPIO_Init_Structure.Pin   = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_3| GPIO_PIN_4 | GPIO_PIN_7     |\
                              GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 |\
                              GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
  HAL_GPIO_Init(GPIOE, &GPIO_Init_Structure);
  
  /* GPIOF configuration */  
  GPIO_Init_Structure.Pin   = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2| GPIO_PIN_3 | GPIO_PIN_4     |\
                              GPIO_PIN_5 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15;
  HAL_GPIO_Init(GPIOF, &GPIO_Init_Structure);
  
  /* GPIOG configuration */  
  GPIO_Init_Structure.Pin   = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2| GPIO_PIN_3 | GPIO_PIN_4     |\
                              GPIO_PIN_5 | GPIO_PIN_10;
  
  HAL_GPIO_Init(GPIOG, &GPIO_Init_Structure);  
}

/**
  * @brief  Initializes LCD IO.
  * @param  None
  * @retval None
  */

static void FSMC_BANK3_Init(void) 
{  
  SRAM_HandleTypeDef hsram;
  FSMC_NORSRAM_TimingTypeDef SRAM_Timing;
  
  /*** Configure the SRAM Bank 3 ***/  
  /* Configure IPs */
  hsram.Instance  = FMC_NORSRAM_DEVICE;
  hsram.Extended  = FMC_NORSRAM_EXTENDED_DEVICE;

  SRAM_Timing.AddressSetupTime      = 5;
  SRAM_Timing.AddressHoldTime       = 1;
  SRAM_Timing.DataSetupTime         = 9;
  SRAM_Timing.BusTurnAroundDuration = 0;
  SRAM_Timing.CLKDivision           = 2;
  SRAM_Timing.DataLatency           = 2;
  SRAM_Timing.AccessMode            = FSMC_ACCESS_MODE_A;
  
  hsram.Init.NSBank             = FSMC_NORSRAM_BANK3;
  hsram.Init.DataAddressMux     = FSMC_DATA_ADDRESS_MUX_DISABLE;
  hsram.Init.MemoryType         = FSMC_MEMORY_TYPE_SRAM;
  hsram.Init.MemoryDataWidth    = FSMC_NORSRAM_MEM_BUS_WIDTH_16;
  hsram.Init.BurstAccessMode    = FSMC_BURST_ACCESS_MODE_DISABLE;
  hsram.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_LOW;
  hsram.Init.WrapMode           = FSMC_WRAP_MODE_DISABLE;
  hsram.Init.WaitSignalActive   = FSMC_WAIT_TIMING_BEFORE_WS;
  hsram.Init.WriteOperation     = FSMC_WRITE_OPERATION_ENABLE;
  hsram.Init.WaitSignal         = FSMC_WAIT_SIGNAL_DISABLE;
  hsram.Init.ExtendedMode       = FSMC_EXTENDED_MODE_DISABLE;
  hsram.Init.AsynchronousWait   = FSMC_ASYNCHRONOUS_WAIT_DISABLE;
  hsram.Init.WriteBurst         = FSMC_WRITE_BURST_DISABLE;

  /* Initialize the SRAM controller */
  FSMC_BANK3_MspInit();
  HAL_SRAM_Init(&hsram, &SRAM_Timing, &SRAM_Timing);   
}