STM32F427 FMC LCD interface with CubeMX

[turboscrew]

How do I generate FMC LCD interface using CubeMX?

I tried, but got nothing LCD-related.

Especially: nothing related to register select.

[Tesla DeLorean · Accepted solution]

Sorry, don't really understand the question.

It gives you an option for the "LCD Register Select", in the usual sense this would allow you to access the LCD from two distinct memory decode regions, one for the DATA side (ie memcpy to a wide range say 64K space), and a second for CONTROL registers access.

[turboscrew]

It doesn't even configure the GPIOs:

static void MX_GPIO_Init(void)
{
 
  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOF_CLK_ENABLE();
  __HAL_RCC_GPIOE_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();
 
}

and:

/* FMC initialization function */
static void MX_FMC_Init(void)
{
  FMC_NORSRAM_TimingTypeDef Timing;
 
  /** Perform the SRAM1 memory initialization sequence
  */
  hsram1.Instance = FMC_NORSRAM_DEVICE;
  hsram1.Extended = FMC_NORSRAM_EXTENDED_DEVICE;
  /* hsram1.Init */
  hsram1.Init.NSBank = FMC_NORSRAM_BANK1;
  hsram1.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE;
  hsram1.Init.MemoryType = FMC_MEMORY_TYPE_SRAM;
  hsram1.Init.MemoryDataWidth = FMC_NORSRAM_MEM_BUS_WIDTH_16;
  hsram1.Init.BurstAccessMode = FMC_BURST_ACCESS_MODE_DISABLE;
  hsram1.Init.WaitSignalPolarity = FMC_WAIT_SIGNAL_POLARITY_LOW;
  hsram1.Init.WrapMode = FMC_WRAP_MODE_DISABLE;
  hsram1.Init.WaitSignalActive = FMC_WAIT_TIMING_BEFORE_WS;
  hsram1.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE;
  hsram1.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE;
  hsram1.Init.ExtendedMode = FMC_EXTENDED_MODE_DISABLE;
  hsram1.Init.AsynchronousWait = FMC_ASYNCHRONOUS_WAIT_DISABLE;
  hsram1.Init.WriteBurst = FMC_WRITE_BURST_DISABLE;
  hsram1.Init.ContinuousClock = FMC_CONTINUOUS_CLOCK_SYNC_ONLY;
  hsram1.Init.PageSize = FMC_PAGE_SIZE_NONE;
  /* Timing */
  Timing.AddressSetupTime = 15;
  Timing.AddressHoldTime = 15;
  Timing.DataSetupTime = 255;
  Timing.BusTurnAroundDuration = 15;
  Timing.CLKDivision = 16;
  Timing.DataLatency = 17;
  Timing.AccessMode = FMC_ACCESS_MODE_A;
  /* ExtTiming */
 
  if (HAL_SRAM_Init(&hsram1, &Timing, NULL) != HAL_OK)
  {
    _Error_Handler(__FILE__, __LINE__);
  }
 
}

 I can't find a way to the control register access.

[turboscrew]

A-ha, this explains the "register select"...

https://www.st.com/content/ccc/resource/technical/document/application_note/group0/17/82/73/f8/b8/8a/47/c7/DM00338361/files/DM00338361.pdf/jcr:content/translations/en.DM00338361.pdf

I, kind of, thought that CubeMX would generate register writing function with "automatic" register select GPIO handling.

Is it still the idea, that the FMC-GPIOs need to be configured by user?

[turboscrew]

Aha, the GPIO-configurations are there, but in a different file than in an older version.