SPI Signals pinout

RE: SPI Signals pinout

AndreasF — Mon, 27 Aug 2018 10:43:52 GMT

Hi again.

Here is an example:

Open up the main.c file in your SDK 15 folder, nRF5_SDK_15.0.0_a53641a\examples\peripheral\spi\main.c

Under the main function you find the struct spi_config that defines which GPIO pins the SPI is configured to.

The struct is the following code:

    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));

Just change SPI_SS_PIN, SPI_MISO_PIN, SPI_MOSI_PIN, and SPI_SCK_PIN to the GPIO pins integers you found in the pin assignment.

You can also open one of the project files found in nRF5_SDK_15.0.0_a53641a\examples\peripheral\spi\pca10040\blank and do the exact same thing.

- Andreas

RE: SPI Signals pinout

shay — Mon, 27 Aug 2018 09:56:46 GMT

Thanks for your answer

Can you specify how can I map the spi interrupt pin in the software?

Thanks

RE: SPI Signals pinout

AndreasF — Wed, 22 Aug 2018 14:09:46 GMT

Hello.

You can connect to any GPIO pin found in this table in the product specification for the SPI signals. The SWDIO pin is also found in this table.

The mapping of the pins needs to be done according the configurations found for each signal, which is also found in the product specification for the SPI here, I suggest you read that.

- Andreas