circuitpython/ports/nrf/nrfx_config.h

#ifndef NRFX_CONFIG_H__
#define NRFX_CONFIG_H__

// SPI
#define NRFX_SPIM_ENABLED 1

#ifdef NRF52840_XXAA
    #define NRFX_SPIM3_ENABLED 1
#else
    #define NRFX_SPIM2_ENABLED 1
#endif

#define NRFX_SPIM_DEFAULT_CONFIG_IRQ_PRIORITY 7
#define NRFX_SPIM_MISO_PULL_CFG 1

// TWI aka. I2C
#define NRFX_TWIM_ENABLED 1
#define NRFX_TWIM0_ENABLED 1

#define NRFX_TWIM_DEFAULT_CONFIG_IRQ_PRIORITY 7
#define NRFX_TWIM_DEFAULT_CONFIG_FREQUENCY NRF_TWIM_FREQ_400K
#define NRFX_TWIM_DEFAULT_CONFIG_HOLD_BUS_UNINIT 0

// UART
#define NRFX_UART_ENABLED 1
#define NRFX_UART0_ENABLED 1

#define NRFX_UART_DEFAULT_CONFIG_IRQ_PRIORITY 7
#define NRFX_UART_DEFAULT_CONFIG_HWFC NRF_UART_HWFC_DISABLED
#define NRFX_UART_DEFAULT_CONFIG_PARITY NRF_UART_PARITY_EXCLUDED
#define NRFX_UART_DEFAULT_CONFIG_BAUDRATE NRF_UART_BAUDRATE_115200

#endif