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Elixir Z-Wave library
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lib/grizzly/zwave/commands/node_provisioning_get.ex
defmodule Grizzly.ZWave.Commands.NodeProvisioningGet do
@moduledoc """
This module implements command COMMAND_NODE_PROVISIONING_GET of the COMMAND_CLASS_NODE_PROVISIONING command class
This command is used to request the metadata information associated to an entry in the node
Provisioning List
Params:
* `:seq_number` - the sequence number of the networked command (required)
* `:dsk` - the DSK for the entry being requested (required)
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave.{Command, DecodeError, DSK}
alias Grizzly.ZWave.CommandClasses.NodeProvisioning
alias Grizzly.ZWave
@type param :: {:seq_number, ZWave.seq_number()} | {:dsk, DSK.dsk_string()}
@impl true
@spec new([param()]) :: {:ok, Command.t()}
def new(params) do
command = %Command{
name: :node_provisioning_get,
command_byte: 0x05,
command_class: NodeProvisioning,
params: params,
impl: __MODULE__
}
{:ok, command}
end
@impl true
@spec encode_params(Command.t()) :: binary()
def encode_params(command) do
seq_number = Command.param!(command, :seq_number)
{:ok, dsk_binary} = DSK.string_to_binary(Command.param!(command, :dsk))
dsk_byte_size = byte_size(dsk_binary)
<<seq_number, 0x00::size(3), dsk_byte_size::size(5)>> <> dsk_binary
end
@impl true
def decode_params(
<<seq_number, _::size(3), dsk_byte_size::size(5),
dsk_binary::size(dsk_byte_size)-unit(8)-binary>>
) do
with {:ok, dsk_string} <- DSK.binary_to_string(dsk_binary) do
{:ok,
[
seq_number: seq_number,
dsk: dsk_string
]}
else
{:error, reason} when reason in [:dsk_too_short, :dsk_too_long] ->
{:error, %DecodeError{value: dsk_binary, param: :dsk, command: :node_provisioning_get}}
end
end
end