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circuits_i2c

2.0.1
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circuits_i2c lib i2c i2c_nif.ex
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lib/i2c/i2c_nif.ex 

defmodule Circuits.I2C.Nif do

  @moduledoc false



  defp load_nif() do

    nif_binary = Application.app_dir(:circuits_i2c, "priv/i2c_nif")

    :erlang.load_nif(to_charlist(nif_binary), 0)

  end



  def open(device) do

    with :ok <- load_nif() do

      apply(__MODULE__, :open, [device])

    end

  end



  def read(_ref, _address, _count, _retries), do: :erlang.nif_error(:nif_not_loaded)

  def write(_ref, _address, _data, _retries), do: :erlang.nif_error(:nif_not_loaded)



  def write_read(_ref, _address, _write_data, _read_count, _retries),

    do: :erlang.nif_error(:nif_not_loaded)



  def close(_ref), do: :erlang.nif_error(:nif_not_loaded)



  def info() do

    :ok = load_nif()

    apply(__MODULE__, :info, [])

  end

end