circuitpython/ports/atmel-samd/boards/trinket_m0/mpconfigboard.h

#define MICROPY_HW_BOARD_NAME "Adafruit Trinket M0"
#define MICROPY_HW_MCU_NAME "samd21e18"

// Rev B - Black
#define MICROPY_HW_LED_STATUS   (&pin_PA10)

#define MICROPY_HW_APA102_MOSI   (&pin_PA00)
#define MICROPY_HW_APA102_SCK    (&pin_PA01)

#define MICROPY_PORT_A        (PORT_PA00 | PORT_PA01)
#define MICROPY_PORT_B        (0)
#define MICROPY_PORT_C        (0)

#define IGNORE_PIN_PA03     1
#define IGNORE_PIN_PA04     1
#define IGNORE_PIN_PA11     1
#define IGNORE_PIN_PA12     1
#define IGNORE_PIN_PA13     1
#define IGNORE_PIN_PA14     1
#define IGNORE_PIN_PA15     1
#define IGNORE_PIN_PA16     1
#define IGNORE_PIN_PA17     1
#define IGNORE_PIN_PA18     1
#define IGNORE_PIN_PA19     1
#define IGNORE_PIN_PA20     1
#define IGNORE_PIN_PA21     1
#define IGNORE_PIN_PA22     1
#define IGNORE_PIN_PA23     1
// 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_PA30     1
#define IGNORE_PIN_PA31     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 IGNORE_PIN_PB00     1

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

#define DEFAULT_SPI_BUS_SCK (&pin_PA07)
#define DEFAULT_SPI_BUS_MOSI (&pin_PA06)
#define DEFAULT_SPI_BUS_MISO (&pin_PA09)

#define DEFAULT_UART_BUS_RX (&pin_PA07)
#define DEFAULT_UART_BUS_TX (&pin_PA06)