def deps do
  [
    {:elixircom, "~> 0.2.0"}
  ]
end

$ cd elixircom
$ iex -S mix
iex> Elixircom.run("/dev/tty.usbmodem14103", speed: 115_200)
AT
OK
^B
iex>

$ cd elixircom
$ iex -S mix
Erlang/OTP 21 [erts-10.0.8] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [hipe]
Interactive Elixir (1.7.3) - press Ctrl+C to exit (type h() ENTER for help)
iex> Circuits.UART.enumerate()
%{
  "ttyUSB0" => %{
    description: "FT232R USB UART",
    manufacturer: "FTDI",
    product_id: 24577,
    serial_number: "AH05M2WB",
    vendor_id: 1027
  },
  "ttyUSB1" => %{
    description: "Qualcomm CDMA Technologies MSM",
    manufacturer: "Qualcomm, Incorporated",
    product_id: 37042,
    serial_number: "ed3b781a",
    vendor_id: 1478
  },
iex> Elixircom.run("/dev/ttyUSB1")
AT
OK