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Elixir Z-Wave library
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lib/grizzly/zwave/commands/extended_user_code_get.ex
defmodule Grizzly.ZWave.Commands.ExtendedUserCodeGet do
@moduledoc """
This command is used to request the user code of a specific user identifier.
## Params
* `:user_id` - The user identifier to request the user code for.
* `:report_more?` - This field is used to instruct the receiving node to report
as many user codes as possible within a single Z-Wave command because the sending
node intends to read the whole (or a large part of the) user code database.
"""
@behaviour Grizzly.ZWave.Command
import Grizzly.ZWave.Encoding
alias Grizzly.ZWave.{Command, DecodeError}
alias Grizzly.ZWave.CommandClasses.UserCode
@type param :: {:user_id, UserCode.extended_user_id()} | {:report_more?, boolean()}
@impl Grizzly.ZWave.Command
@spec new([param()]) :: {:ok, Command.t()}
def new(params) do
command = %Command{
name: :extended_user_code_get,
command_byte: 0x0C,
command_class: UserCode,
params: params,
impl: __MODULE__
}
{:ok, command}
end
@impl Grizzly.ZWave.Command
@spec encode_params(Command.t()) :: binary()
def encode_params(command) do
user_id = Command.param!(command, :user_id)
report_more? = Command.param(command, :report_more?, false)
<<user_id::16, 0::7, bool_to_bit(report_more?)::1>>
end
@impl Grizzly.ZWave.Command
@spec decode_params(binary()) :: {:ok, [param()]} | {:error, DecodeError.t()}
def decode_params(<<user_id::16, _reserved::7, report_more?::1>>) do
{:ok,
[
user_id: user_id,
report_more?: bit_to_bool(report_more?)
]}
end
end