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barrier_operator_set.ex
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barrier_operator_set.ex
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defmodule Grizzly.ZWave.Commands.BarrierOperatorSet do
@moduledoc """
This command is used to initiate an unattended change in state of the barrier.
Params:
* `:target_value` - explain what `:target_value` param is for
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave.{Command, DecodeError}
alias Grizzly.ZWave.CommandClasses.BarrierOperator
@type param :: {:target_value, BarrierOperator.target_value()}
@impl Grizzly.ZWave.Command
@spec new([param()]) :: {:ok, Command.t()}
def new(params) do
command = %Command{
name: :barrier_operator_set,
command_byte: 0x01,
command_class: BarrierOperator,
params: params,
impl: __MODULE__
}
{:ok, command}
end
@impl Grizzly.ZWave.Command
@spec encode_params(Command.t()) :: binary()
def encode_params(command) do
target_value = Command.param!(command, :target_value)
target_value_byte = BarrierOperator.target_value_to_byte(target_value)
<<target_value_byte>>
end
@impl Grizzly.ZWave.Command
@spec decode_params(binary()) :: {:ok, [param()]} | {:error, DecodeError.t()}
def decode_params(<<target_value_byte>>) do
case BarrierOperator.target_value_from_byte(target_value_byte) do
{:ok, target_value} ->
{:ok, [target_value: target_value]}
{:error, %DecodeError{} = decode_error} ->
{:error, %DecodeError{decode_error | command: :barrier_operator_set}}
end
end
end