Question
STM32F429 external nor flash data not persistent using FSMC
Posted on June 12, 2017 at 14:24
Hi,
I am using STM32F429ZET6 controller in my custom board. I have used JS28F00AM29EWHA Nor flash from micron.The interface between the controller and external nor is a parallel bus. I have made FMC_Init and GPIO_Init in the following way. I have refereed the
from st for fsmc. I have also cross verified the code fromhttps://community.st.com/0D50X00009XkZtLSAV
. My issue is I get wrong manufacturer code and device_id. And also checked with the write and read functionality, but when I reset my debug session and read the previously written addresses I always get zero's. I am not getting where I am going wrong. Any help or suggestion will be of great help.https://community.st.com/community/stm32-community/stm32-forum
‌/*fsmc init as follows */
void NOR_FLASH_Init(void)
{ hnor.Instance = FMC_NORSRAM_DEVICE; hnor.Extended = FMC_NORSRAM_EXTENDED_DEVICE; hnor.Init.NSBank = FMC_NORSRAM_BANK1; hnor.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE; hnor.Init.MemoryType = FMC_MEMORY_TYPE_NOR; hnor.Init.MemoryDataWidth = FMC_NORSRAM_MEM_BUS_WIDTH_16; hnor.Init.BurstAccessMode = FMC_BURST_ACCESS_MODE_DISABLE; hnor.Init.WaitSignalPolarity = FMC_WAIT_SIGNAL_POLARITY_LOW; hnor.Init.WrapMode = FMC_WRAP_MODE_DISABLE; hnor.Init.WaitSignalActive = FMC_WAIT_TIMING_BEFORE_WS; hnor.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE; hnor.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE; hnor.Init.ExtendedMode = FMC_EXTENDED_MODE_ENABLE; hnor.Init.AsynchronousWait = FMC_ASYNCHRONOUS_WAIT_DISABLE; hnor.Init.WriteBurst = FMC_WRITE_BURST_DISABLE; hnor.Init.ContinuousClock = FMC_CONTINUOUS_CLOCK_SYNC_ONLY; hnor.Init.PageSize = FMC_PAGE_SIZE_NONE; /* Timing */ NOR_Timing.AddressSetupTime = 15; NOR_Timing.AddressHoldTime = 15; NOR_Timing.DataSetupTime = 10; NOR_Timing.BusTurnAroundDuration = 15; NOR_Timing.CLKDivision = 16; NOR_Timing.DataLatency = 17; NOR_Timing.AccessMode = FMC_ACCESS_MODE_B; /* ExtTiming */ ExtTiming.AddressSetupTime = 15; ExtTiming.AddressHoldTime = 15; ExtTiming.DataSetupTime = 255; ExtTiming.BusTurnAroundDuration = 15; ExtTiming.CLKDivision = 16; ExtTiming.DataLatency = 17; ExtTiming.AccessMode = FMC_ACCESS_MODE_B; /* Initialize the NOR controller */ if (HAL_NOR_Init(&hnor, &NOR_Timing, &NOR_Timing) != HAL_OK) { /* Initialization Error */ while(1); } /*♯♯-2- Read & Check the NOR device IDs ♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯*/ /* Read NOR memory ID */ if(HAL_NOR_Read_ID(&hnor, &NOR_Id) != HAL_OK) { /* NOR read ID Error */ while(1); } /* Test the NOR ID correctness */ if((NOR_Id.Manufacturer_Code != (uint16_t)MANUFACTURER_CODE) || (NOR_Id.Device_Code1 != (uint16_t)DEVICE_CODE1)) { /* NOR ID not correct */ //while(1); } /*♯♯-3- Erase NOR memory ♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯♯*/ /* Return to read mode */ HAL_NOR_ReturnToReadMode(&hnor);/* Erase the NOR memory block to write on */
HAL_NOR_Erase_Block(&hnor, WRITE_READ_ADDR, NOR_BANK_ADDR);/* Return the NOR memory status */
if(HAL_NOR_GetStatus(&hnor, NOR_BANK_ADDR, NOR_TIMEOUT_VALUE) !=HAL_NOR_STATUS_SUCCESS) { while(1); }}/***GPIO init **/
static void MX_GPIO_Init(void)
{ GPIO_InitTypeDef GPIO_Init_Structure; // Enable FMC clock __HAL_RCC_FMC_CLK_ENABLE();// 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_NOPULL; GPIO_Init_Structure.Speed = GPIO_SPEED_HIGH; GPIO_Init_Structure.Alternate = GPIO_AF12_FMC; //Data and address lines GPIO_Init_Structure.Pin = GPIO_PIN_0 | GPIO_PIN_1 | 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_2 | 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; GPIO_Init_Structure.Mode = GPIO_MODE_AF_PP; GPIO_Init_Structure.Pull = GPIO_NOPULL; GPIO_Init_Structure.Speed = GPIO_SPEED_HIGH; GPIO_Init_Structure.Alternate = GPIO_AF12_FMC; 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;
GPIO_Init_Structure.Mode = GPIO_MODE_AF_PP; GPIO_Init_Structure.Pull = GPIO_NOPULL; GPIO_Init_Structure.Speed = GPIO_SPEED_HIGH; GPIO_Init_Structure.Alternate = GPIO_AF12_FMC; 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_13 | GPIO_PIN_14;
GPIO_Init_Structure.Mode = GPIO_MODE_AF_PP; GPIO_Init_Structure.Pull = GPIO_NOPULL; GPIO_Init_Structure.Speed = GPIO_SPEED_HIGH; GPIO_Init_Structure.Alternate = GPIO_AF12_FMC; HAL_GPIO_Init(GPIOG, &GPIO_Init_Structure);Thanks.
#fmc #stm32f4-external-nor-flash #flash-read-and-write #js28f00am29ewha