stm32f4 synchronized psram problem

只看该作者 · 2019-5-18 08:37

hi guys
i work on my stm32f4discovery based on stm32f407vgt6.
i have a problem with fsmc and synchronized psram mode.
i do some test and result is here:
first i config fsmc as Sync Nor flash accourding this below config:

复制

  FSMC_NORSRAM_TimingTypeDef Timing;



/** Perform the SRAM1 memory initialization sequence

*/

hsram1.Instance = FSMC_NORSRAM_DEVICE;

hsram1.Extended = FSMC_NORSRAM_EXTENDED_DEVICE;

/* hsram1.Init */

hsram1.Init.NSBank = FSMC_NORSRAM_BANK1;

hsram1.Init.DataAddressMux = FSMC_DATA_ADDRESS_MUX_DISABLE;

hsram1.Init.MemoryType = FSMC_MEMORY_TYPE_NOR;

hsram1.Init.MemoryDataWidth = FSMC_NORSRAM_MEM_BUS_WIDTH_16;

hsram1.Init.BurstAccessMode = FSMC_BURST_ACCESS_MODE_ENABLE;

hsram1.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_LOW;

hsram1.Init.WrapMode = FSMC_WRAP_MODE_DISABLE;

hsram1.Init.WaitSignalActive = FSMC_WAIT_TIMING_BEFORE_WS;

hsram1.Init.WriteOperation = FSMC_WRITE_OPERATION_ENABLE;

hsram1.Init.WaitSignal = FSMC_WAIT_SIGNAL_DISABLE;

hsram1.Init.ExtendedMode = FSMC_EXTENDED_MODE_DISABLE;

hsram1.Init.AsynchronousWait = FSMC_ASYNCHRONOUS_WAIT_DISABLE;

hsram1.Init.WriteBurst = FSMC_WRITE_BURST_ENABLE;

hsram1.Init.PageSize = FSMC_PAGE_SIZE_NONE;

/* Timing */

Timing.AddressSetupTime = 40;

Timing.AddressHoldTime = 15;

Timing.DataSetupTime = 255;

Timing.BusTurnAroundDuration = 15;

Timing.CLKDivision = 16;

Timing.DataLatency = 12;

Timing.AccessMode = FSMC_ACCESS_MODE_A;

/* ExtTiming */



if (HAL_SRAM_Init(&hsram1, &Timing, NULL) != HAL_OK)

{

_Error_Handler(__FILE__, __LINE__);

}

and to write data on fsmc bus use this code :

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uint16_t w[] = {

0xffff, 0x0, 0xffff, 0,

0xffff, 0, 0xffff, 0xAAAA};



for (uint8_t uwIndex = 0; uwIndex < 8; uwIndex++)

*(uint16_t *) ((uint32_t)0x60000000 + uwIndex * 2)=w[uwIndex];

and i get this result :

as above image you can see not anythings on fsmc_clk pin,but i expect have fsmc clock on this pin!!!!
so i test new fsmc config as below :

复制

  FSMC_NORSRAM_TimingTypeDef Timing;



/** Perform the SRAM1 memory initialization sequence

*/

hsram1.Instance = FSMC_NORSRAM_DEVICE;

hsram1.Extended = FSMC_NORSRAM_EXTENDED_DEVICE;

/* hsram1.Init */

hsram1.Init.NSBank = FSMC_NORSRAM_BANK1;

hsram1.Init.DataAddressMux = FSMC_DATA_ADDRESS_MUX_DISABLE;

hsram1.Init.MemoryType = FSMC_MEMORY_TYPE_PSRAM;

hsram1.Init.MemoryDataWidth = FSMC_NORSRAM_MEM_BUS_WIDTH_16;

hsram1.Init.BurstAccessMode = FSMC_BURST_ACCESS_MODE_ENABLE;

hsram1.Init.WaitSignalPolarity = FSMC_WAIT_SIGNAL_POLARITY_LOW;

hsram1.Init.WrapMode = FSMC_WRAP_MODE_DISABLE;

hsram1.Init.WaitSignalActive = FSMC_WAIT_TIMING_BEFORE_WS;

hsram1.Init.WriteOperation = FSMC_WRITE_OPERATION_ENABLE;

hsram1.Init.WaitSignal = FSMC_WAIT_SIGNAL_DISABLE;

hsram1.Init.ExtendedMode = FSMC_EXTENDED_MODE_DISABLE;

hsram1.Init.AsynchronousWait = FSMC_ASYNCHRONOUS_WAIT_DISABLE;

hsram1.Init.WriteBurst = FSMC_WRITE_BURST_ENABLE;

hsram1.Init.PageSize = FSMC_PAGE_SIZE_NONE;

/* Timing */

Timing.AddressSetupTime = 40;

Timing.AddressHoldTime = 15;

Timing.DataSetupTime = 255;

Timing.BusTurnAroundDuration = 15;

Timing.CLKDivision = 16;

Timing.DataLatency = 12;

Timing.AccessMode = FSMC_ACCESS_MODE_A;

/* ExtTiming */



if (HAL_SRAM_Init(&hsram1, &Timing, NULL) != HAL_OK)

{

_Error_Handler(__FILE__, __LINE__);

}

and accourding new config you can see this resulte :

i have clock in fsmc_clk pin without any data on other pins and fsmc data bus!!!!
whats problem in my code!????
thx for your advice

只看该作者 · 2019-5-23 11:26

楼主想问什么问题

只看该作者 · 2019-5-23 11:24

这个英文看不太好

只看该作者 · 2019-5-18 08:41

i upload result images again
config mode 1 ,fsmc as nor flash config:

config test 2, fsmc as sync psram config:

thx