text: #define MICROPY_HW_BOARD_NAME "Arduino Nano 33 IoT"
  #define MICROPY_HW_MCU_NAME "samd21g18"
  
  #define MICROPY_HW_LED_STATUS   (&pin_PA17)
  
  #define MICROPY_PORT_A        (0)
  #define MICROPY_PORT_B        (0)
  #define MICROPY_PORT_C        (0)
  
  #define DEFAULT_I2C_BUS_SCL (&pin_PB09)
  #define DEFAULT_I2C_BUS_SDA (&pin_PB08)
  
  #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_PB23)
  #define DEFAULT_UART_BUS_TX (&pin_PB22)
  
  // USB is always used internally so skip the pin objects for it.
  #define IGNORE_PIN_PA24     1
  #define IGNORE_PIN_PA25     1
  
  #define CUSTOM_INTERNAL_FLASH_FILESYSTEM_SIZE (37*1024)
  