Don't find the definition and the use of this structure NRF_SPIM_Type !!!!!!!!!!!!!!!!!!!

[Vincent25]

Hi,

 I'm sorry but i cannot find in the discussion the definition of this structure NRF_SPIM_Type

it is not defined in nrf_spim.h

typedef struct
{
    NRF_SPIM_Type * p_reg;        ///< Pointer to a structure with SPIM registers.
    uint8_t         drv_inst_idx; ///< Index of the driver instance. For internal use only.
} nrfx_spim_t;

ok, what is a structure of SPIM registers and ho to use it!!!

i don't know what is a SPIM register.

My aim is to use the following class provided by adafruit I think

class SPIClass {
  public:
    SPIClass(NRF_SPIM_Type *p_spi, uint8_t uc_pinMISO, uint8_t uc_pinSCK, uint8_t uc_pinMOSI);

....

and i need to provide to the constructor a p_spi....

thank you

Vincent

[Edvin]

Hello,

I am not familiar with the adafruit libraries (looks like C++). In our SDK, you can take a look at the example found in:

SDK\examples\peripheral\spi.

In main() you will see:

    nrf_drv_spi_config_t spi_config = NRF_DRV_SPI_DEFAULT_CONFIG;
    spi_config.ss_pin   = SPI_SS_PIN;
    spi_config.miso_pin = SPI_MISO_PIN;
    spi_config.mosi_pin = SPI_MOSI_PIN;
    spi_config.sck_pin  = SPI_SCK_PIN;
    APP_ERROR_CHECK(nrf_drv_spi_init(&spi, &spi_config, spi_event_handler, NULL));

NRF_DRV_SPI_DEFAULT_CONFIG will set spi_config.mode to NRF_DRV_SPI_MODE_0 by default, if you want to change the mode to e.g. mode 3, you can add the line:

spi_config.mode = NRF_DRV_SPI_MODE_3;

before APP_ERROR_CHECK(nrf_drv_spi_init(...));

But again, I am not familiar with adafruit's libraries. If you have questions regarding these, I suggest you ask adafruit.

Best regards,

Edvin