it happens "NRFX_ERROR_TIMEOUT" when debugging QSPI in nRF52833

[Tomlee]

Hi,

   I am debgging QSPI( type name: IS25LQ040B) in nRF52833,   I met "NRFX_ERROR_TIMEOUT",  Could you give me some advice, please?

       // Set QSPI pins to pins related to connected board.
    config.pins.sck_pin = 4;
    config.pins.csn_pin = 8;
    config.pins.io0_pin = 6;
    config.pins.io1_pin = 27;

    since In this IS25LQ040B, Io2 and WP multiplexing ,  WP(IO2) is set to 3.3V in our board;  

                                               IO3 and HOLD multiplexing,    HOLD(IO3) is set to 3.3v in out board.

     so I am confused IO2 and IO3 ,  I don't know if need to config since hardware is not used,   I thinkd there must be something wrong,  Could you give me some advice, please?

[Sigurd]

Hi,

  so I am confused IO2 and IO3 ,  I don't know if need to config since hardware is not used

 If you are not using these pins, then you should set these in the config as NRF_QSPI_PIN_NOT_CONNECTED

Also set QSPI_CONFIG_WRITEOC and QSPI_CONFIG_READOC so that it matches the number of data lines used.

[Tomlee]

Hi Sigurd,

   Thanks for your reply.

   could you tell me what  io2_level and io3_level means?

typedef struct
{
    uint8_t               opcode;    /**< Opcode used in custom instruction transmission. */
    nrf_qspi_cinstr_len_t length;    /**< Length of the custom instruction data. */
    bool                  io2_level; /**< I/O line level during transmission. */
    bool                  io3_level; /**< I/O line level during transmission. */
    bool                  wipwait;   /**< Wait if a Wait in Progress bit is set in the memory status byte. */
    bool                  wren;      /**< Send write enable before instruction. */
} nrf_qspi_cinstr_conf_t;

[Sigurd]

Ok, as long as you're not trying to do QSPI function calls on nRF52833.

[Tomlee]

Hi Sigurd,

     Thanks your reply.

    Maybe you misunderstood me, what I meant was to refer to nRF52840 to add QSPI function to nRF52833, and then call the corresponding QSPI function in nRF52833, is it OK to do this?

[Sigurd]

Tomlee said:

call the corresponding QSPI function in nRF52833

 No, only nRF52840 have the QSPI peripheral. There is no QSPI inside the nrF52833 chip.

[Tomlee]

Hi Sigurd,

   I know nRF52833 does not have QSPI, if we use nRF52833 to design our own board and add a peripheral QSPI, refer to nRF52840 to add QSPI driver function to nRF52833, and then call the corresponding QSPI function in nRF52833,  Is that OK to do this?

[Sigurd]

Tomlee said:

use nRF52833 to design our own board and add a peripheral QSPI

 What do you mean by "add a peripheral QSPI" ?