NAND_HandleTypeDef hnand;

void initNand(void)
{
HAL_NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_0);
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);

initNandGPIO();
initNandHandler();
}

void initNandGPIO(void)
{
GPIO_InitTypeDef GPIO_InitStruct;

__GPIOE_CLK_ENABLE();
__GPIOD_CLK_ENABLE();

GPIO_InitStruct.Pin = GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_FSMC;
HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);

GPIO_InitStruct.Pin = GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_14 | GPIO_PIN_15 | GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_FSMC;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

HAL_NVIC_SetPriority(FSMC_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(FSMC_IRQn);
}

void initNandHandler(void)
{
FSMC_NAND_PCC_TimingTypeDef ComSpaceTiming;
FSMC_NAND_PCC_TimingTypeDef AttSpaceTiming;

hnand.Instance = FSMC_NAND_DEVICE;

hnand.Init.NandBank = FSMC_NAND_BANK2;
hnand.Init.Waitfeature = FSMC_NAND_PCC_WAIT_FEATURE_DISABLE;
hnand.Init.MemoryDataWidth = FSMC_NAND_PCC_MEM_BUS_WIDTH_8;
hnand.Init.EccComputation = FSMC_NAND_ECC_DISABLE;
hnand.Init.ECCPageSize = FSMC_NAND_ECC_PAGE_SIZE_256BYTE;
hnand.Init.TCLRSetupTime = 0;
hnand.Init.TARSetupTime = 0;

ComSpaceTiming.SetupTime = 252;
ComSpaceTiming.WaitSetupTime = 252;
ComSpaceTiming.HoldSetupTime = 252;
ComSpaceTiming.HiZSetupTime = 252;

AttSpaceTiming.SetupTime = 252;
AttSpaceTiming.WaitSetupTime = 252;
AttSpaceTiming.HoldSetupTime = 252;
AttSpaceTiming.HiZSetupTime = 252;

HAL_NAND_Init(&hnand, &ComSpaceTiming, &AttSpaceTiming);
}

void FSMC_IRQHandler(void)
{
HAL_NAND_IRQHandler(&hnand);
}

void readId(void)
{
NAND_IDTypeDef NAND_ID;
char buf[100];

if (HAL_NAND_Read_ID(&hnand, &NAND_ID) == HAL_OK)
{
sprintf(buf, "Nand Flash ID = %02X,%02X,%02X,%02X\n",NAND_ID.Maker_Id, NAND_ID.Device_Id, NAND_ID.Third_Id, NAND_ID.Fourth_Id);
print(buf);
}
}