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

#define MICROPY_HW_BOARD_NAME "uChip"
#define MICROPY_HW_MCU_NAME "samd21e18"

#define MICROPY_HW_LED_STATUS   (&pin_PA07)

#define BOARD_HAS_CRYSTAL     (1)

// No microcontroller.nvm
#define CIRCUITPY_INTERNAL_NVM_SIZE 0

// USB is always used internally so skip the pin objects for it.
#define IGNORE_PIN_PA24     1
#define IGNORE_PIN_PA25     1

#define IGNORE_PIN_PA27     1
#define IGNORE_PIN_PA28     1

#define IGNORE_PIN_PB00     1
#define IGNORE_PIN_PB01     1
#define IGNORE_PIN_PB02     1
#define IGNORE_PIN_PB03     1
#define IGNORE_PIN_PB04     1
#define IGNORE_PIN_PB05     1
#define IGNORE_PIN_PB06     1
#define IGNORE_PIN_PB07     1
#define IGNORE_PIN_PB08     1
#define IGNORE_PIN_PB09     1
#define IGNORE_PIN_PB10     1
#define IGNORE_PIN_PB11     1
#define IGNORE_PIN_PB12     1
#define IGNORE_PIN_PB13     1
#define IGNORE_PIN_PB14     1
#define IGNORE_PIN_PB15     1
#define IGNORE_PIN_PB16     1
#define IGNORE_PIN_PB17     1
#define IGNORE_PIN_PB22     1
#define IGNORE_PIN_PB23     1
#define IGNORE_PIN_PB30     1
#define IGNORE_PIN_PB31     1

#define DEFAULT_I2C_BUS_SCL (&pin_PA23)
#define DEFAULT_I2C_BUS_SDA (&pin_PA22)

#define DEFAULT_SPI_BUS_SCK (&pin_PA17)
#define DEFAULT_SPI_BUS_MOSI (&pin_PA16)
#define DEFAULT_SPI_BUS_MISO (&pin_PA19)

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