#define SRAM_MEMORY_WIDTH       FMC_NORSRAM_MEM_BUS_WIDTH_16
#define SRAM_CONTINUOUS_CLOCK   FMC_CONTINUOUS_CLOCK_SYNC_ONLY

SRAM_HandleTypeDef hsram;
FMC_NORSRAM_TimingTypeDef SRAM_Timing;

void SRAM_Init(void)
{
    GPIO_InitTypeDef GPIO_Init_Structure;

    __HAL_RCC_FMC_CLK_ENABLE();

    __HAL_RCC_GPIOD_CLK_ENABLE();
    __HAL_RCC_GPIOE_CLK_ENABLE();
    __HAL_RCC_GPIOF_CLK_ENABLE();
    __HAL_RCC_GPIOG_CLK_ENABLE();

    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_FMC;

    GPIO_Init_Structure.Pin   = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 |
                                  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(GPIOD, &GPIO_Init_Structure);

    GPIO_Init_Structure.Pin   =   GPIO_PIN_0 | GPIO_PIN_1 |GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 |
                                  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);

    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);

    GPIO_Init_Structure.Pin   = GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2| GPIO_PIN_3 | GPIO_PIN_4 |
                                  GPIO_PIN_5 | GPIO_PIN_9 | GPIO_PIN_10;
    HAL_GPIO_Init(GPIOG, &GPIO_Init_Structure);

    hsram.Instance = FMC_NORSRAM_DEVICE;
    hsram.Extended = FMC_NORSRAM_EXTENDED_DEVICE;

    SRAM_Timing.AddressSetupTime = 6;
    SRAM_Timing.AddressHoldTime = 7;        //DC
    SRAM_Timing.DataSetupTime = 6;
    SRAM_Timing.BusTurnAroundDuration = 6;  //DC
    SRAM_Timing.CLKDivision = 2;            //DC
    SRAM_Timing.DataLatency = 12;           //DC
    SRAM_Timing.AccessMode = FMC_ACCESS_MODE_A; //DC

    hsram.Init.NSBank = FMC_NORSRAM_BANK1;
    hsram.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE;
    hsram.Init.MemoryType = FMC_MEMORY_TYPE_SRAM;
    hsram.Init.MemoryDataWidth = SRAM_MEMORY_WIDTH;
    hsram.Init.BurstAccessMode = FMC_BURST_ACCESS_MODE_DISABLE;
    hsram.Init.WaitSignalPolarity = FMC_WAIT_SIGNAL_POLARITY_LOW;
    hsram.Init.WaitSignalActive = FMC_WAIT_TIMING_BEFORE_WS;
    hsram.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE;
    hsram.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE;
    hsram.Init.ExtendedMode = FMC_EXTENDED_MODE_DISABLE;
    hsram.Init.AsynchronousWait = FMC_ASYNCHRONOUS_WAIT_DISABLE;
    hsram.Init.WriteBurst = FMC_WRITE_BURST_DISABLE;
    hsram.Init.ContinuousClock = SRAM_CONTINUOUS_CLOCK;
    hsram.Init.WriteFifo = FMC_WRITE_FIFO_DISABLE;

    /* Initialize the SRAM controller */
    if (HAL_SRAM_Init(&hsram, &SRAM_Timing, &SRAM_Timing) != HAL_OK)
    {
        /* Initialization Error */
        while(1);
    }
}