OctoSpi in QuadSpi mode

[hp26]

Hello,

I am trying to access an external flash memory (32 mbit) using stm32L4. Stm32L4 has OctoSpi. i have configured the OctoSpi with dual quad disabled but yet, i am not able to access the external flash mem. The external flash memory supports single, dual and quad spi modes. I tried to set the octo spi to use just 1 line inorder to read the manufacturer id from the flash memory chip but it always returns 0.Is there any example/stater guide available for OctoSpi on stm32L4xx.

​Thanks!

[Tesla DeLorean · Accepted solution]

I have it working on a H7Ax part

//****************************************************************************
 
static uint8_t OSPI_ReadID(OSPI_HandleTypeDef *hospi, uint32_t *pID)
{
  OSPI_RegularCmdTypeDef sCommand = {0};
  uint32_t data[1];
 
  sCommand.OperationType      = HAL_OSPI_OPTYPE_COMMON_CFG;
  sCommand.FlashId            = HAL_OSPI_FLASH_ID_1;
 
  sCommand.Instruction        = 0x9F;
 
  sCommand.InstructionMode    = HAL_OSPI_INSTRUCTION_1_LINE;
  sCommand.InstructionSize    = HAL_OSPI_INSTRUCTION_8_BITS;
  sCommand.InstructionDtrMode = HAL_OSPI_INSTRUCTION_DTR_DISABLE;
  sCommand.AddressMode        = HAL_OSPI_ADDRESS_NONE;
  sCommand.AlternateBytesMode = HAL_OSPI_ALTERNATE_BYTES_NONE;
  sCommand.DataMode           = HAL_OSPI_DATA_1_LINE;
  sCommand.DataDtrMode        = HAL_OSPI_DATA_DTR_DISABLE;
  sCommand.DummyCycles        = 0;
  sCommand.NbData             = sizeof(data);
  sCommand.DQSMode            = HAL_OSPI_DQS_DISABLE;
  sCommand.SIOOMode           = HAL_OSPI_SIOO_INST_EVERY_CMD;
 
  if (HAL_OSPI_Command(hospi, &sCommand, HAL_OSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK)
  {
    return(OSPI_ERROR);
  }
 
  if (HAL_OSPI_Receive(hospi, (void *)data, HAL_OSPI_TIMEOUT_DEFAULT_VALUE) != HAL_OK)
  {
    return(OSPI_ERROR);
  }
 
  if (pID)
    *pID = data[0];
 
  return(OSPI_OK);
}
 
//****************************************************************************

[hp26]

Thank you for the response.