circuitpython/ports/atmel-samd/boards/ndgarage_ndbit6/mpconfigboard.h

#define MICROPY_HW_BOARD_NAME "ndGarage[n°]Bit6:FeatherSnow"
#define MICROPY_HW_MCU_NAME "samd21e18"

#define MICROPY_HW_LED_STATUS   (&pin_PA23)

#define SPI_FLASH_MOSI_PIN          &pin_PA16
#define SPI_FLASH_MISO_PIN          &pin_PA18
#define SPI_FLASH_SCK_PIN           &pin_PA17
#define SPI_FLASH_CS_PIN            &pin_PA15

#define CIRCUITPY_INTERNAL_NVM_SIZE 256

#define BOARD_FLASH_SIZE (0x00040000 - 0x2000 - 0x010000 CIRCUITPY_INTERNAL_NVM_SIZE)

#define DEFAULT_I2C_BUS_SCL (&pin_PA09)
#define DEFAULT_I2C_BUS_SDA (&pin_PA08)

#define DEFAULT_SPI_BUS_SCK (&pin_PA05)
#define DEFAULT_SPI_BUS_MOSI (&pin_PA04)
#define DEFAULT_SPI_BUS_MISO (&pin_PA06)

#define DEFAULT_UART_BUS_RX (&pin_PA09)
#define DEFAULT_UART_BUS_TX (&pin_PA08)

// USB is always used.
#define IGNORE_PIN_PA24     1
#define IGNORE_PIN_PA25     1