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Elixir Z-Wave library
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lib/grizzly/command_class/network_management_basic/dsk_get.ex
defmodule Grizzly.CommandClass.NetworkManagementBasic.DSKGet do
@moduledoc """
Command module for working with the NetworkManagementBasic command class DSK_GET command
Command Options:
* `:add_mode` - the controller has two different DSKs for S2, one for
learn (`:learn`) mode and one for normal inclusion (this is called `:add`)
* `:seq_number` - the sequence number used for the Z/IP packet
* `:retries` - the number of attempts to send the command (default 2)
"""
@behaviour Grizzly.Command
alias Grizzly.Packet
alias Grizzly.CommandClass.NetworkManagementBasic
alias Grizzly.Command.{EncodeError, Encoding}
@type t :: %__MODULE__{
seq_number: Grizzly.seq_number(),
retries: non_neg_integer(),
add_mode: NetworkManagementBasic.add_mode()
}
@type opt :: {:seq_number, Grizzly.seq_number()} | {:retries, non_neg_integer()}
defstruct seq_number: nil,
retries: 2,
add_mode: :add
@spec init([opt]) :: {:ok, t}
def init(opts) do
{:ok, struct(__MODULE__, opts)}
end
@spec encode(t()) :: {:ok, binary()} | {:error, EncodeError.t()}
def encode(%__MODULE__{seq_number: seq_number} = command) do
with {:ok, encoded} <-
Encoding.encode_and_validate_args(command, %{
add_mode: {:encode_with, NetworkManagementBasic, :encode_add_mode}
}) do
binary = Packet.header(seq_number) <> <<0x4D, 0x08, seq_number, encoded.add_mode()>>
{:ok, binary}
end
end
@spec handle_response(t, Packet.t()) ::
{:continue, t}
| {:done, {:error, :nack_response}}
| {:done, NetworkManagementBasic.dsk_get_report()}
| {:retry, t}
def handle_response(
%__MODULE__{seq_number: seq_number} = command,
%Packet{
seq_number: seq_number,
types: [:ack_response]
}
) do
{:continue, command}
end
def handle_response(
%__MODULE__{seq_number: seq_number, retries: 0},
%Packet{
seq_number: seq_number,
types: [:nack_response]
}
) do
{:done, {:error, :nack_response}}
end
def handle_response(
%__MODULE__{seq_number: seq_number, retries: n} = command,
%Packet{
seq_number: seq_number,
types: [:nack_response]
}
) do
{:retry, %{command | retries: n - 1}}
end
def handle_response(
%__MODULE__{seq_number: seq_number} = command,
%Packet{
seq_number: seq_number,
types: [:nack_response, :nack_waiting]
} = packet
) do
if Packet.sleeping_delay?(packet) do
{:queued, command}
else
{:continue, command}
end
end
def handle_response(
_command,
%Packet{
body: %{
command: :dsk_report,
report: report
}
}
) do
{:done, {:ok, report}}
end
def handle_response(command, _), do: {:continue, command}
end