Hello,
I'm using NCS 1.4.99 with a nRF5340DK and want to use the hardware CS of the SPI and also use BLE.
Here is a simple code that work on a nRF5340PDK but only work on a nRF5340DK when CONFIG_BT is not defined.
/* Includes ------------------------------------------------------------------*/
#include <assert.h>
#include <stdint.h>
#include <nrfx_spim.h>
/* Private define ------------------------------------------------------------*/
#define SPI_TRANSFER_SIZE 2
#define TX_DATA 0x1234
#define SCLK_PIN NRF_GPIO_PIN_MAP(1, 5)
#define MOSI_PIN NRF_GPIO_PIN_MAP(1, 4)
#define MISO_PIN NRF_GPIO_PIN_MAP(1, 6)
#define CSN_PIN NRF_GPIO_PIN_MAP(1, 1)
/* Private variables ---------------------------------------------------------*/
static uint8_t rx_buffer[SPI_TRANSFER_SIZE];
static uint8_t tx_buffer[SPI_TRANSFER_SIZE];
static const nrfx_spim_t spi = NRFX_SPIM_INSTANCE(4);
static const nrfx_spim_xfer_desc_t xfer = NRFX_SPIM_XFER_TRX(tx_buffer, SPI_TRANSFER_SIZE, rx_buffer, SPI_TRANSFER_SIZE);
/* Public functions ----------------------------------------------------------*/
void main(void)
{
nrfx_err_t err_code;
nrfx_spim_config_t spi_config = NRFX_SPIM_DEFAULT_CONFIG(
SCLK_PIN,
MOSI_PIN,
MISO_PIN,
NRFX_SPIM_PIN_NOT_USED);
spi_config.frequency = NRF_SPIM_FREQ_8M;
spi_config.mode = NRF_SPIM_MODE_0;
err_code = nrfx_spim_init(&spi, &spi_config, NULL, NULL);
assert(err_code == NRFX_SUCCESS);
spi.p_reg->PSEL.CSN = CSN_PIN; // workaround, if set in spi_config, the CS pin is set/clear by software
tx_buffer[0] = (TX_DATA >> 8) & 0xFF;
tx_buffer[1] = TX_DATA & 0xFF;
while(1) {
nrfx_spim_xfer(&spi, &xfer, NRFX_SPIM_FLAG_NO_XFER_EVT_HANDLER);
}
}
