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Elixir Z-Wave library
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lib/grizzly/zwave/commands/node_name_set.ex
defmodule Grizzly.ZWave.Commands.NodeNameSet do
@moduledoc """
This command is used to set the name of the receiving node.
Params:
* `:encoding` - one of :ascii, :extended_ascii, :utf_16
* `:name` - a string name for the node
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave.{Command, DecodeError}
alias Grizzly.ZWave.CommandClasses.NodeNaming
@type param :: {:name, String.t()} | {:encoding, :ascii | :extended_ascii | :utf_16}
@impl true
def new(params) do
command = %Command{
name: :node_name_set,
command_byte: 0x01,
command_class: NodeNaming,
params: params,
impl: __MODULE__
}
{:ok, command}
end
@impl true
def encode_params(command) do
encoding = Command.param!(command, :encoding)
name = Command.param!(command, :name)
encoding_byte = NodeNaming.encoding_to_byte(encoding)
<<0x00::size(5), encoding_byte::size(3)>> <> name
end
@impl true
def decode_params(<<_reserved::size(5), encoding_byte::size(3), name::binary>>) do
with {:ok, encoding} <- NodeNaming.encoding_from_byte(encoding_byte) do
{:ok, [encoding: encoding, name: name]}
else
{:error, %DecodeError{}} = error ->
error
end
end
end