Quad SPI Mode 1-1-4 Read Problem

[Mike_d]

Hi,

I'm using OCTOSPI in Mode Quad SPI on a STM32H563ZIT6.  I'm having issues when reading Serial Flash data with a 1-1-4 (6Bh) read, 1-1-4 (32h) write is working fine. Also 1-1-1 read and 1-1-2 read also work fine.  The serial flash is IS25LP032D.  I have verified QE=1 and DummyCycles = 8 before issuing the read command. The 1-1-4 read has more problems if data is FF FF FF versus 01 02 03. 1-1-1 and 1-1-2 reads have no problem.  Here is the config (Cube MX) and 1-1-4 read function. I have the SPI bus running at 1MHz

  hospi1.Instance = OCTOSPI1;
  hospi1.Init.FifoThresholdByte = 1;
  hospi1.Init.MemoryMode = HAL_XSPI_SINGLE_MEM;
  hospi1.Init.MemoryType = HAL_XSPI_MEMTYPE_MICRON;
  hospi1.Init.MemorySize = HAL_XSPI_SIZE_64MB;
  hospi1.Init.ChipSelectHighTimeCycle = 1;
  hospi1.Init.FreeRunningClock = HAL_XSPI_FREERUNCLK_DISABLE;
  hospi1.Init.ClockMode = HAL_XSPI_CLOCK_MODE_0;
  hospi1.Init.WrapSize = HAL_XSPI_WRAP_NOT_SUPPORTED;
  hospi1.Init.ClockPrescaler = 249;
  hospi1.Init.SampleShifting = HAL_XSPI_SAMPLE_SHIFT_HALFCYCLE;
  hospi1.Init.DelayHoldQuarterCycle = HAL_XSPI_DHQC_DISABLE;
  hospi1.Init.ChipSelectBoundary = HAL_XSPI_BONDARYOF_NONE;
  hospi1.Init.DelayBlockBypass = HAL_XSPI_DELAY_BLOCK_BYPASS;
  hospi1.Init.Refresh = 0;

uint8_t buf_rx[16] = {0};

is25_read_114(0x1000, buf_rx, sizeof(buf_rx));

int is25_read_114(uint32_t address, uint8_t *buffer, uint32_t length)
{
	XSPI_RegularCmdTypeDef cmd = {0};
	HAL_StatusTypeDef result;



	// Require quad mode for 0x6B
	if(quad_enable == QUAD_DISABLE)
		return -1;

	memset(&cmd, 0, sizeof(cmd));

	// 1-1-4 Fast Read Quad Output (0x6B)
	cmd.Instruction        = 0x6B;
	cmd.OperationType      = HAL_XSPI_OPTYPE_COMMON_CFG;
	cmd.InstructionMode    = HAL_XSPI_INSTRUCTION_1_LINE;
	cmd.InstructionWidth   = HAL_XSPI_INSTRUCTION_8_BITS;

	// Address on 1 line (1-1-4)
	cmd.AddressMode        = HAL_XSPI_ADDRESS_1_LINE;
	cmd.AddressWidth       = HAL_XSPI_ADDRESS_24_BITS;
	cmd.Address            = address;

	// No mode/alternate bytes for 0x6B
	cmd.AlternateBytesMode  = HAL_XSPI_ALT_BYTES_NONE;
	cmd.AlternateBytesWidth = 0;
	cmd.AlternateBytes      = 0;

	// Data on 4 lines
	cmd.DataMode           = HAL_XSPI_DATA_4_LINES;
	cmd.DataLength         = length;

	// ISSI Fast Read Dual Output uses 8 dummy clocks by default.
	cmd.DummyCycles        = 8;

	cmd.IOSelect           = HAL_XSPI_SELECT_IO_3_0;

	result = HAL_XSPI_Command(hqspi, &cmd, HAL_XSPI_TIMEOUT_DEFAULT_VALUE);
	if(result != HAL_OK)
	{
		return -2;
	}

	result = HAL_XSPI_Receive(hqspi, buffer, HAL_XSPI_TIMEOUT_DEFAULT_VALUE);
	if(result != HAL_OK)
	{
		return -3;
	}

	return 0;
}

 Thanks,

-Mike