problem using STM32F407 FSMC with NOR flash

[minh3192]

Posted on January 28, 2016 at 09:53

Hi all,

I am trying to interface with JR28F064M29EW NOR flash (

https://www.micron.com/~/media/documents/products/data-sheet/nor-flash/parallel/m29ew/m29ew_32mb_128mb.pdf

) using the STM32F407 MCU. However, I couldn't read the correct device ID from the NOR IC. So I want to ask whether there is anything wrong with my initialization code?Here is the initialization code:  GPIO_InitTypeDef GPIO_Init_Structure;  /* Enable FSMC clock */  __HAL_RCC_FSMC_CLK_ENABLE();  __HAL_RCC_FSMC_FORCE_RESET();  __HAL_RCC_FSMC_RELEASE_RESET();  /* Enable GPIOs clock */  __HAL_RCC_GPIOD_CLK_ENABLE();  __HAL_RCC_GPIOE_CLK_ENABLE();  __HAL_RCC_GPIOF_CLK_ENABLE();  __HAL_RCC_GPIOG_CLK_ENABLE();  /* Common GPIO configuration */  GPIO_Init_Structure.Mode      = GPIO_MODE_AF_PP;  GPIO_Init_Structure.Pull      = GPIO_PULLUP;  GPIO_Init_Structure.Alternate = GPIO_AF12_FSMC;  GPIO_Init_Structure.Speed     = GPIO_SPEED_HIGH;  /* GPIOD configuration */  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);  /* GPIOE configuration */  GPIO_Init_Structure.Pin   = GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | 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_9 | GPIO_PIN_10 | GPIO_PIN_12;  HAL_GPIO_Init(GPIOG, &GPIO_Init_Structure); hNor.Instance  = FSMC_NORSRAM_DEVICE; hNor.Extended  = FSMC_NORSRAM_EXTENDED_DEVICE; /* NOR device configuration */ NOR_Timing.AddressSetupTime       = 6; NOR_Timing.AddressHoldTime        = 2; NOR_Timing.DataSetupTime          = 8; NOR_Timing.BusTurnAroundDuration  = 0; NOR_Timing.CLKDivision            = 2; NOR_Timing.DataLatency            = 2; NOR_Timing.AccessMode             = FSMC_ACCESS_MODE_B; hNor.Init.NSBank                 = FSMC_NORSRAM_BANK3; hNor.Init.DataAddressMux         = FSMC_DATA_ADDRESS_MUX_DISABLE; hNor.Init.MemoryType             = FSMC_MEMORY_TYPE_NOR; hNor.Init.MemoryDataWidth        = FSMC_NORSRAM_MEM_BUS_WIDTH_16; hNor.Init.BurstAccessMode        = FSMC_BURST_ACCESS_MODE_DISABLE; hNor.Init.WaitSignalPolarity     = FSMC_WAIT_SIGNAL_POLARITY_LOW; hNor.Init.WrapMode               = FSMC_WRAP_MODE_DISABLE; hNor.Init.WaitSignalActive       = FSMC_WAIT_TIMING_BEFORE_WS; hNor.Init.WriteOperation         = FSMC_WRITE_OPERATION_ENABLE; hNor.Init.WaitSignal             = FSMC_WAIT_SIGNAL_DISABLE; hNor.Init.ExtendedMode           = FSMC_EXTENDED_MODE_DISABLE; hNor.Init.AsynchronousWait       = FSMC_ASYNCHRONOUS_WAIT_DISABLE; hNor.Init.WriteBurst             = FSMC_WRITE_BURST_DISABLE; /* Initialize the NOR controller */ if(HAL_NOR_Init(&hNor, &NOR_Timing, &NOR_Timing) != HAL_OK) { /* Initialization Error */ Error_Handler(); } #nor #fsmc #stm32f407

[waclawek.jan]

Posted on January 28, 2016 at 10:46

Is it only the ID you can't read correctly, or also the content of memory?

Post the content of relevant GPIO and FSMC registers after the initialization. JW

[minh3192]

Posted on January 28, 2016 at 14:31

Here are the content of the registers

GPIOD_MODER   0x40020C00  AAAAAA0AGPIOD_OTYPER  0x40020C04  00000000GPIOD_OSPEEDR 0x40020C08  FFFFFF0FGPIOD_PUPDR   0x40020C0C  55555505GPIOD_IDR     0x40020C10  0000C7FFGPIOD_ODR     0x40020C14  00000000GPIOD_BSRR    0x40020C18  00000000GPIOD_LCKR    0x40020C1C  00000000GPIOD_AFRL    0x40020C20  CCCC00CCGPIOD_AFRH    0x40020C24  CCCCCCCCGPIOE_MODER   0x40021000  AAAA8A90GPIOE_OTYPER  0x40021004  00000000GPIOE_OSPEEDR 0x40021008  FFFFCFE0GPIOE_PUPDR   0x4002100C  55554550GPIOE_IDR     0x40021010  0000FFC0GPIOE_ODR     0x40021014  00000000GPIOE_BSRR    0x40021018  00000000GPIOE_LCKR    0x4002101C  00000000GPIOE_AFRL    0x40021020  C0CCC000GPIOE_AFRH    0x40021024  CCCCCCCCGPIOF_MODER   0x40021400  AA000AAAGPIOF_OTYPER  0x40021404  00000000GPIOF_OSPEEDR 0x40021408  FF000FFFGPIOF_PUPDR   0x4002140C  55000555GPIOF_IDR     0x40021410  00000FC0GPIOF_ODR     0x40021414  00000000GPIOF_BSRR    0x40021418  00000000GPIOF_LCKR    0x4002141C  00000000GPIOF_AFRL    0x40021420  00CCCCCCGPIOF_AFRH    0x40021424  CCCC0000GPIOG_MODER   0x40021800  02280AAAGPIOG_OTYPER  0x40021804  00000000GPIOG_OSPEEDR 0x40021808  033C0FFFGPIOG_PUPDR   0x4002180C  01140555GPIOG_IDR     0x40021810  000017C0GPIOG_ODR     0x40021814  00000000GPIOG_BSRR    0x40021818  00000000GPIOG_LCKR    0x4002181C  00000000GPIOG_AFRL    0x40021820  00CCCCCCGPIOG_AFRH    0x40021824  000C0CC0FSMC_BCR1 0xA0000000  00000000FSMC_BTR1 0xA0000004  00000000FSMC_BCR2 0xA0000008  00000000FSMC_BTR2 0xA000000C  00000000FSMC_BCR3 0xA0000010  000010D9FSMC_BTR3 0xA0000014  10100826FSMC_BCR4 0xA0000018  000030D2FSMC_BTR4 0xA000001C  0FFFFFFFFSMC_BWTR1 0xA0000104  0FFFFFFFFSMC_BWTR2 0xA000010C  0FFFFFFFFSMC_BWTR3 0xA0000114  0FFFFFFFFSMC_BWTR4 0xA000011C  0FFFFFFFThe content can't be read either.

[waclawek.jan]

Posted on January 28, 2016 at 17:43

Looks reasonable. However, it's strange that for chipselects 1 and 2 there are 0s in the registers instead of their reset values; it's also strange that you initialize all 4 chipselects.

How exactly is your memory connected? And how exactly do you access it? JW

[minh3192]

Posted on January 30, 2016 at 01:20

Hi waclawek.jan,

Thanks for the help. I finally managed to resolve the problem. It turned out to be some issue with the NOR IC. Replacing the NOR IC and it works.