Hi EdSutter
Sorry, my mistyping, 4Bytes command.
I mean, in the LUT, modify the read command from 3byte command to 4Bytes:
More details, you need to check the ISSI flash chip datasheet:
You can use the ECH, address from 0X18 to 0X20(24 bit address to 32bit address).
Do you try it on your side?
Any issues or not?
Best Regards,
Kerry
Hi EdSutter,
Enable the QE bit is not set up with .sflashPadType = kSerialFlash_4Pads,
It normally in the project related program flashloader files. The option defines it:
Or the polling code like this to enable it:
/* Enter quad mode. */
status = flexspi_nor_enable_quad_mode(EXAMPLE_FLEXSPI);
if (status != kStatus_Success)
{
return status;
}
status_t flexspi_nor_enable_quad_mode(FLEXSPI_Type *base)
{
flexspi_transfer_t flashXfer;
status_t status;
uint32_t writeValue = FLASH_QUAD_ENABLE;
/* Write enable */
status = flexspi_nor_write_enable(base, 0);
if (status != kStatus_Success)
{
return status;
}
/* Enable quad mode. */
flashXfer.deviceAddress = 0;
flashXfer.port = kFLEXSPI_PortA1;
flashXfer.cmdType = kFLEXSPI_Write;
flashXfer.SeqNumber = 1;
flashXfer.seqIndex = NOR_CMD_LUT_SEQ_IDX_WRITESTATUSREG;
flashXfer.data = &writeValue;
flashXfer.dataSize = 1;
status = FLEXSPI_TransferBlocking(base, &flashXfer);
if (status != kStatus_Success)
{
return status;
}
status = flexspi_nor_wait_bus_busy(base);
/* Do software reset. */
FLEXSPI_SoftwareReset(base);
return status;
}
BTW, do you use the MCUBootUtility to download the code? That tool will help you to generate the qspiflash_config directly.
About the hardware, you need to make sure the hardware design is correct, in fact, you also can test it in the MIMXRT1060-EVK board directly by replacing the QSPI chip.
Anyway, any updated information from your side just kindly let me know.
best Regards,
Kerry
