SPIM driver stuck on nrfx_spim_xfer

[TomerAb]

I'm trying to use the SPIM driver on nRF52832. The setup is:

Chip: nRF52832

SDK: 15

Softdevice: s132 v6

Toolchain: GCC

For some reason the call to nrfx_spim_xfer never returns.

The code:

nrfx_gpiote_in_config_t icm_int1 = NRFX_GPIOTE_CONFIG_IN_SENSE_LOTOHI(true);

    //icm_int1.pull = NRF_GPIO_PIN_PULLUP;

    nrfx_gpiote_in_init(1, &icm_int1, OnPinEventHandler);

    nrfx_gpiote_in_event_enable(1, true);

    nrfx_spim_config_t spi_cfg =

    {

        .sck_pin = 10, // 10

        .mosi_pin = 9, // 9

        .miso_pin = 3, // 3

        .ss_pin = 2, // 2

        .ss_active_high = false,

        .irq_priority = NRFX_SPIM_DEFAULT_CONFIG_IRQ_PRIORITY,

        .orc = 0xFF,

        .frequency = NRF_SPIM_FREQ_1M,

        .mode = NRF_SPIM_MODE_3,

        .bit_order = NRF_SPIM_BIT_ORDER_MSB_FIRST,

        NRFX_SPIM_DEFAULT_EXTENDED_CONFIG

    };

    APP_ERROR_CHECK(nrfx_spim_init(&_spi_instance, &spi_cfg, NULL, NULL));

    uint8_t tx[2] = { 0x00 | 0x80, 0 };

    uint8_t rx[2] = { 0 };

    nrfx_spim_xfer_desc_t xfer =

    {

        .p_tx_buffer = tx,

        .tx_length = 2,

        .p_rx_buffer = rx,

        .rx_length= 2,

    };

    

    NRF_LOG_INFO("manual xfer");

    nrfx_spim_xfer(&_spi_instance, &xfer, 0);

    NRF_LOG_INFO("ICM20649: WHOAMI = 0x%X", rx[1]);

This is what I get in the RTT logger:

 0> <info> app: Setting vector table to bootloader: 0x00078000
 0> <info> app: Setting vector table to main app: 0x00026000
 0> <info> SPIM: Function: nrfx_spim_init, error code: NRF_SUCCESS.
 0> <info> app: manual xfer

I've tried to where exactly it got stuck with GDB, so I ran it and stopped the program manually after a few seconds (I've tried it multiple times and got the same results):

Program received signal SIGTRAP, Trace/breakpoint trap.
0x0002dd16 in nrf_spim_event_check (p_reg=0x40003000, spim_event=NRF_SPIM_EVENT_END)
    at D:/nrf/nRF5_SDK_15.0.0_a53641a/modules/nrfx/hal/nrf_spim.h:525
525         return (bool)*(volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)spim_event);
(gdb) list
520     }
521
522     __STATIC_INLINE bool nrf_spim_event_check(NRF_SPIM_Type * p_reg,
523                                               nrf_spim_event_t spim_event)
524     {
525         return (bool)*(volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)spim_event);
526     }
527
528     __STATIC_INLINE uint32_t nrf_spim_event_address_get(NRF_SPIM_Type * p_reg,
529                                                         nrf_spim_event_t spim_event)
(gdb) bt
#0  0x0002dd16 in nrf_spim_event_check (p_reg=0x40003000, spim_event=NRF_SPIM_EVENT_END)
    at D:/nrf/nRF5_SDK_15.0.0_a53641a/modules/nrfx/hal/nrf_spim.h:525
#1  0x0002e464 in spim_xfer (p_spim=0x40003000, p_cb=0x20002dac <m_cb>, p_xfer_desc=0x2000ffb8, flags=0)
    at D:/nrf/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_spim.c:509
#2  0x0002e59e in nrfx_spim_xfer (p_instance=0x39c6c <_spi_instance>, p_xfer_desc=0x2000ffb8, flags=0)
    at D:/nrf/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_spim.c:593
#3  0x00036d32 in main () at src/main.c:1036
(gdb)

Looks like the SPIM driver gets stuck waiting for NRF_SPIM_EVENT_END event?

By the way, looking with an oscilloscope on the relevant pins I see no traffic except for the chip select pin.

I ran this test both on our custom PCB (where the SPI slave chip was connected) and on the PCA10040 eval board, both showed the exact same results.

[nero]

Hi，I have met it too. Have you solved? I develop based on freertos, but i don't think it is related with os.