SPI in non-blocking mode ?

[acha]

Hello all,

I am actually implementing an SPI-master driver in non blocking mode, I write the following code, when I use a debeug led, the program enters well in the IRQ, but nothing happen in the MOSI when I visualize the signal using the logic analyzer. :

 #include "spi.h"
#include "boardConfig.hpp"
#include "nrf_drv_spi.h"

#define BSP_UART_SUPPORT
#include "bsp.h"

#define CS_PIN 6
#define DQ0 22
#define DQ1 19
#define DQ2 20
#define DQ3 24
#define CLK 23

static const uint8_t leds_list[2] = {17, 18};

#define SPI_INSTANCE  1
static const nrf_drv_spi_t spi1 = NRF_DRV_SPI_INSTANCE(SPI_INSTANCE);

static nrf_drv_spi_xfer_desc_t p_xfer_desc;

void spi_event_handler(nrf_drv_spi_evt_t const *p_event)
{
}

void initSPI()
{
    nrf_drv_spi_config_t spi_config = NRF_DRV_SPI_DEFAULT_CONFIG;

    spi_config.ss_pin   = MEMORY_CHIP_SELECT;
    spi_config.miso_pin = MEMORY_DQ1;
    spi_config.mosi_pin = MEMORY_DQ0 ;
    spi_config.sck_pin  = MEMORY_CLOCK;

    nrf_drv_spi_init(&spi1, &spi_config, spi_event_handler);
}

void spiWrite(uint8_t *tx_payload, uint8_t size_tx)
{
    p_xfer_desc.p_tx_buffer = (uint8_t const *)tx_payload;
    p_xfer_desc.tx_length   = size_tx;
    p_xfer_desc.p_rx_buffer = NULL;
    p_xfer_desc.rx_length   = 0;
    nrf_drv_spi_xfer(&spi1, &p_xfer_desc, 0);
}

[Petter Myhre]

Which SDK version are you using?

[acha]

SDK 12.2.0

[Petter Myhre]

Why are you using the 5 wire implementation? This is usually used for serialization. Maybe you can try using the SPI driver instead? "nrf_drv_spi.h"?

[acha]

That's what I am actually doing, in non-blocking mode, I use the function nrf_drv_spi_xfer , That's right? If it is, should I call it inside or outside the IRQ ?

[Petter Myhre]

That is what you are actually doing? What do you mean? Maybe you can edit your question and include the code you are actually using? What IRQ are you talking about?