m_nrf_spi_mngr

[Jim]

I have two SPI ports, each connected to multiple SPI devices. Can I apply for two m_nrf_spi_mngr at the same time? (NRF_SPI_MNGR_DEF(m_nrf_spi_mngr, SPI1_QUEUE_LENGTH, SPI1_INSTANCE_ID)), is there any special need to pay attention to using two m_nrf_spi_mngr at the same time? I use two, one has always failed, can't receive data

[haakonsh]

Are you using two different SPI instances?

Do you mind sharing the relevant code?

[Jim]

yes,use two different SPI instances.not sharing the relevant code

[haakonsh]

Then do you have any debug information on the SPI issue?

[Jim]

I found that every time I stuck in the following code "while (p_cb->internal_transaction_in_progress)", the CS signal has been pulled low, but no other signal (SPI0 or SPI1, DMA is on)

ret_code_t nrf_spi_mngr_perform(nrf_spi_mngr_t const *          p_nrf_spi_mngr,
                                nrf_spi_mngr_transfer_t const * p_transfers,
                                uint8_t                         number_of_transfers,
                                void (* user_function)(void))
{
    ASSERT(p_nrf_spi_mngr != NULL);
    ASSERT(p_transfers != NULL);
    ASSERT(number_of_transfers != 0);

    ret_code_t err_code = NRF_SUCCESS;
    nrf_spi_mngr_cb_t * p_cb = p_nrf_spi_mngr->p_nrf_spi_mngr_cb;

    CRITICAL_REGION_ENTER();
    if (p_cb->internal_transaction_in_progress)
    {
        err_code = NRF_ERROR_BUSY;
    }
    else
    {
        p_cb->internal_transaction_in_progress = true;
    }
    CRITICAL_REGION_EXIT();

    if (err_code != NRF_ERROR_BUSY)
    {
        nrf_spi_mngr_transaction_t internal_transaction =
        {
            .begin_callback      = NULL,
            .end_callback        = spi_internal_transaction_cb,
            .p_user_data         = (void *)p_nrf_spi_mngr,
            .p_transfers         = p_transfers,
            .number_of_transfers = number_of_transfers,
        };

        err_code = nrf_spi_mngr_schedule(p_nrf_spi_mngr, &internal_transaction);

        if (err_code == NRF_SUCCESS)
        {
            while (p_cb->internal_transaction_in_progress)
            {
                if (user_function)
                {
                    user_function();
                }
            }
            err_code = p_cb->internal_transaction_result;
        }
    }

    return err_code;
}

[haakonsh]

Do you have a scope of the spi lines?

Are you using the optional user_function?