class I2C

Integer|String|Array[Integer]

I2C.new(
    unit: Symbol|nil,
    ?frequency: Integer,
    ?sda_pin: Integer,
    ?scl_pin: Integer
  ) -> instance

instance.outputs_array(
    Array[outputs_t] outputs
  ) -> Array[Integer]

instance.read(
    Integer i2c_adrs_7,
    Integer len,
    *outputs_t outputs
  ) -> String

instance.scan() -> nil

instance.write(
    Integer i2c_adrs_7,
    *outputs_t outputs
  ) -> Integer