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Elixir Z-Wave library
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lib/grizzly/zwave/commands/node_remove.ex
defmodule Grizzly.ZWave.Commands.NodeRemove do
@moduledoc """
Z-Wave command NODE_REMOVE
This command is useful for removing Z-Wave devices from the Z-Wave network
This response to this command should be a
`Grizzly.ZWave.Commands.NodeRemoveStatus`
Params:
* `:seq_number` - the sequence number for the network command (required)
* `:mode` - the mode for the remove node process (optional default `:remove_node_any`)
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave.Command
alias Grizzly.ZWave.DecodeError
@type mode :: :remove_node_any | :remove_node_stop
@impl Grizzly.ZWave.Command
def encode_params(_spec, command) do
seq_number = Command.param!(command, :seq_number)
mode = Command.param(command, :mode, :remove_node_any)
# the 0x00 is a reserved byte to be set to 0
<<seq_number, 0x00, encode_mode(mode)>>
end
@impl Grizzly.ZWave.Command
def decode_params(_spec, <<seq_number, _, mode_byte>>) do
case decode_mode(mode_byte) do
{:ok, mode} ->
{:ok, [seq_number: seq_number, mode: mode]}
{:error, %DecodeError{}} = error ->
error
end
end
@spec encode_mode(mode()) :: 0x01 | 0x05
defp encode_mode(:remove_node_any), do: 0x01
defp encode_mode(:remove_node_stop), do: 0x05
@spec decode_mode(byte()) :: {:ok, mode()} | {:error, DecodeError.t()}
defp decode_mode(0x01), do: {:ok, :remove_node_any}
defp decode_mode(0x05), do: {:ok, :remove_node_stop}
defp decode_mode(byte),
do: {:error, %DecodeError{value: byte, param: :mode, command: :node_remove}}
end