we are an the end of our project
we are now trying to use the QPI mode on the example: flexspi_nor_polling_transfer
we now want to use QPI mode (not quad mode)
the modified LUT table:
const uint32_t customLUT[CUSTOM_LUT_LENGTH] = {
/* Normal read mode -SDR */
[4 * NOR_CMD_LUT_SEQ_IDX_READ_NORMAL] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x13, kFLEXSPI_Command_RADDR_SDR, kFLEXSPI_1PAD, 0x20),
[4 * NOR_CMD_LUT_SEQ_IDX_READ_NORMAL + 1] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_READ_SDR, kFLEXSPI_1PAD, 0x04, kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0),
/* Fast read mode - SDR */
[4 * NOR_CMD_LUT_SEQ_IDX_READ_FAST] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x0C, kFLEXSPI_Command_RADDR_SDR, kFLEXSPI_1PAD, 0x20),
[4 * NOR_CMD_LUT_SEQ_IDX_READ_FAST + 1] = FLEXSPI_LUT_SEQ(
kFLEXSPI_Command_DUMMY_SDR, kFLEXSPI_1PAD, 0x08, kFLEXSPI_Command_READ_SDR, kFLEXSPI_1PAD, 0x04),
/* Fast read quad mode - SDR */
[4 * NOR_CMD_LUT_SEQ_IDX_READ_FAST_QUAD] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x6C, kFLEXSPI_Command_RADDR_SDR, kFLEXSPI_1PAD, 0x20),
[4 * NOR_CMD_LUT_SEQ_IDX_READ_FAST_QUAD + 1] = FLEXSPI_LUT_SEQ(
kFLEXSPI_Command_DUMMY_SDR, kFLEXSPI_1PAD, 0x08, kFLEXSPI_Command_READ_SDR, kFLEXSPI_4PAD, 0x04),
/* Read Identification - REMS */
[4 * NOR_CMD_LUT_SEQ_IDX_READSTATUS] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x90, kFLEXSPI_Command_RADDR_SDR, kFLEXSPI_1PAD, 0x03),
[4 * NOR_CMD_LUT_SEQ_IDX_READSTATUS + 1] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_READ_SDR, kFLEXSPI_1PAD, 0x03, kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0),
/* Write Enable */
[4 * NOR_CMD_LUT_SEQ_IDX_WRITEENABLE] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x06, kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0),
/* Erase Sector */
[4 * NOR_CMD_LUT_SEQ_IDX_ERASESECTOR] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0xDC, kFLEXSPI_Command_RADDR_SDR, kFLEXSPI_1PAD, 0x20),
/* Page Program - single mode */
[4 * NOR_CMD_LUT_SEQ_IDX_PAGEPROGRAM_SINGLE] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x12, kFLEXSPI_Command_RADDR_SDR, kFLEXSPI_1PAD, 0x20),
[4 * NOR_CMD_LUT_SEQ_IDX_PAGEPROGRAM_SINGLE + 1] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_WRITE_SDR, kFLEXSPI_1PAD, 0x04, kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0),
/* Page Program - quad mode */
[4 * NOR_CMD_LUT_SEQ_IDX_PAGEPROGRAM_QUAD] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x34, kFLEXSPI_Command_RADDR_SDR, kFLEXSPI_1PAD, 0x20),
[4 * NOR_CMD_LUT_SEQ_IDX_PAGEPROGRAM_QUAD + 1] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_WRITE_SDR, kFLEXSPI_4PAD, 0x04, kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0),
/* Read ID */
[4 * NOR_CMD_LUT_SEQ_IDX_READID] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x9F, kFLEXSPI_Command_READ_SDR, kFLEXSPI_1PAD, 0x04),
/* Enable Quad mode, Latency Code set */
[4 * NOR_CMD_LUT_SEQ_IDX_WRITESTATUSREG] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x31, kFLEXSPI_Command_WRITE_SDR, kFLEXSPI_1PAD, 0x04),
/* Read Configuration Register (RDCR 35h) */
[4 * NOR_CMD_LUT_SEQ_IDX_ENTERQPI] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x35, kFLEXSPI_Command_READ_SDR, kFLEXSPI_1PAD, 0x04),
/* Exit QPI mode */ /* 使用しない。S25FL512SAGMFA010に無いコマンドだが共通化のため削除しない */
[4 * NOR_CMD_LUT_SEQ_IDX_EXITQPI] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_4PAD, 0xFF, kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0),
/* Read status register */
[4 * NOR_CMD_LUT_SEQ_IDX_READSTATUSREG] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0x05, kFLEXSPI_Command_READ_SDR, kFLEXSPI_1PAD, 0x04),
/* Erase whole chip */
[4 * NOR_CMD_LUT_SEQ_IDX_ERASECHIP] =
FLEXSPI_LUT_SEQ(kFLEXSPI_Command_SDR, kFLEXSPI_1PAD, 0xC7, kFLEXSPI_Command_STOP, kFLEXSPI_1PAD, 0),
};
from spec :
we want to read JedecID on QPI style :
but after calling
flexspi_nor_enable_qpi_mode(EXAMPLE_FLEXSPI);
flexspi_nor_get_vendor_id(EXAMPLE_FLEXSPI, &vendorID,kFLEXSPI_PortB1);
we see on the logic analyzer that we transaction was on single spi and seems QPI not working
I read status register as 0x7f (01111111) and I cannot modify it
#define FLEXSPI_CONFIG_REG_QUAD_SET_VALUE 0x2U // QUAD = 1
status_t flexspi_nor_enable_qpi_mode(FLEXSPI_Type *base)
{
flexspi_transfer_t flashXfer;
status_t status;
uint32_t writeValue = 0x0200;
uint32_t configValue;
/*! Read Configuration Register */
flashXfer.deviceAddress = 0;
flashXfer.port = FLASH_PORT;
flashXfer.cmdType = kFLEXSPI_Read;
flashXfer.SeqNumber = 1;
flashXfer.seqIndex = NOR_CMD_LUT_SEQ_IDX_ENTERQPI; //!< Read Configuration Register (RDCR 35h)
flashXfer.data = &configValue;
flashXfer.dataSize = 1;
status = FLEXSPI_TransferBlocking(FLEXSPI, &flashXfer);
if (status != kStatus_Success)
{
return status;
}
//! QUAD bit set
writeValue = (configValue | FLEXSPI_CONFIG_REG_QUAD_SET_VALUE) ;
/* Write enable */
status = flexspi_nor_write_enable(base, 0); //!< flexspi_nor_write_enable
if (status != kStatus_Success)
{
return status;
}
/* Enable quad mode. */
flashXfer.deviceAddress = 0;
flashXfer.port = FLASH_PORT;
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;
}
are you sure "kFLEXSPI_Command_STOP" parameter should be entered to LUT for enter QPI mode?
in addition - lets say i will succeed enter QPI mode, the read ID in the LUT mode should be the same?
no parameters needs to be modified?
I need the opcode and the returned data from the device will be spread to 4 lines.
Yes, I followed the IS25WP064A LUTs to check this. It is important that QE is enabled first before calling this command.
You need to modify the macro kFLEXSPI_4PAD and the command number if the SPI and QPI numbers were different. You can refer to the Instruction Set Table for the QPI commands:
Best regards,
Omar
