Configuring Single QSPI Flash on STM32H750B-DK

[ChameeraW]

Hello everyone,

I'm working with an STM32H750B-DK board featuring the STM32H750XB MCU, and it currently has two "MT25QL512ABB8ESF" flash ICs configured in Dual-Mode QSPI.

I would like to switch to using just one flash IC in standard QSPI mode. Could anyone advise on the necessary changes to configure for a single flash setup?

Thanks in advance!

Following is the existing QSPI init code.

static void MX_QUADSPI_Init(void)
{

  /* USER CODE BEGIN QUADSPI_Init 0 */
  BSP_QSPI_Init_t qspi_initParams;
  /* USER CODE END QUADSPI_Init 0 */

  /* USER CODE BEGIN QUADSPI_Init 1 */

  /* USER CODE END QUADSPI_Init 1 */
  /* QUADSPI parameter configuration*/
  hqspi.Instance = QUADSPI;
  hqspi.Init.ClockPrescaler = 3;
  hqspi.Init.FifoThreshold = 1;
  hqspi.Init.SampleShifting = QSPI_SAMPLE_SHIFTING_NONE;
  hqspi.Init.FlashSize = 26;
  hqspi.Init.ChipSelectHighTime = QSPI_CS_HIGH_TIME_4_CYCLE;
  hqspi.Init.ClockMode = QSPI_CLOCK_MODE_0;
  hqspi.Init.DualFlash = QSPI_DUALFLASH_ENABLE;
  if (HAL_QSPI_Init(&hqspi) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN QUADSPI_Init 2 */
  qspi_initParams.InterfaceMode = MT25TL01G_QPI_MODE;
  qspi_initParams.TransferRate = MT25TL01G_DTR_TRANSFER;
  qspi_initParams.DualFlashMode = MT25TL01G_DUALFLASH_ENABLE;
  BSP_QSPI_DeInit(0);
  if (BSP_QSPI_Init(0, &qspi_initParams) != BSP_ERROR_NONE)
  {
    Error_Handler();
  }
  if (BSP_QSPI_EnableMemoryMappedMode(0) != BSP_ERROR_NONE)
  {
    Error_Handler();
  }
  /* USER CODE END QUADSPI_Init 2 */

}

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[MOBEJ]

Hello @ChameeraW  ,

For your STM32H750B-DK board, you can follow the example provided in the STM32CubeH7 repository on GitHub. Specifically, you can refer to the QSPI  examples for the STM32H743I-EVAL board ( Projects/STM32H743I-EVAL/Examples/QSPI) . Here is the link to the example: QSPI_MemoryMapped

You can use this example as a reference and update it to match your STM32H750B-DK board. 

also to better understand the differences between configuring QSPI for dual and single flash setups, you can compare the following two QSPI examples provided by STMicroelectronics:  QSPI_MemoryMapped & QSPI_MemoryMappedDual .

Best regards