External loader issue with STM32H743 and W25Q512

[lucky65]

Hi all,

I am working on the development of an external loader for STM32CubeProgrammer.

CPU is STM32H743, flash memory is W25Q512 in quadspi mode.

I have a problem in indirect mode: it's working (read and write), but in read I have long timeouts:

//Send command
if (HAL_QSPI_Command(&FLASH_QSPI_PORT, &sCommand, QFLASH_DEF_TIMEOUT) != HAL_OK) 
{
    return HAL_ERROR;
}

// Receive data
if (HAL_QSPI_Receive(&FLASH_QSPI_PORT, buffer, QFLASH_DEF_TIMEOUT) != HAL_OK) 
{ 
    return HAL_ERROR;
}

It seems that HAL_QSPI_Receive goes ok on the first chunk of data, then when cubeprogrammer calls a Read for the following chunks I always have a timeout in HAL_QSPI_Receive, as if this call never finds the FTF or TCF flags active (QUADSPI_SR):

HAL_StatusTypeDef HAL_QSPI_Receive:
.....
while(hqspi->RxXferCount > 0U)
{
  /* Wait until FT or TC flag is set to read received data */
  status = QSPI_WaitFlagStateUntilTimeout(hqspi, (QSPI_FLAG_FT | QSPI_FLAG_TC), SET, tickstart, Timeout);

  if  (status != HAL_OK)
  {
    break;
  }

  *hqspi->pRxBuffPtr = *((__IO uint8_t *)data_reg);
  hqspi->pRxBuffPtr++;
  hqspi->RxXferCount--;
}

...any suggestions ?
Thanks !!

Lucio

[KDJEM.1]

Hello @lucky65 and welcome to the community;

Are you using TIM6 for Tick timebase? 

If you use TIM6, please try  to enable the SysTick instead of TIM6 timebase.

Thank you.

Kaouthar

[lucky65]

Hi Kaouthar,

thanks for your reply.

Actually I am using a "nop loop" for the delay, interrupts are disabled ; the problem seems that the call to

status = QSPI_WaitFlagStateUntilTimeout(hqspi, (QSPI_FLAG_FT | QSPI_FLAG_TC), SET, tickstart, Timeout);

does not exit with QSPI_FLAG_FT | QSPI_FLAG_TC condition.

Work in progress, up to now I have no explanation for this.

Thanks,

best regards

Lucio

[KDJEM.1]

Hello @lucky65;

Is the QUADSPI configured in indirect read with only data phase activated?

Are you get a BUSY flag of the QUADSPI_SR register?

Could you please check the STM32H743 errata sheet.

Thank you.

Kaouthar