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Elixir Z-Wave library
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lib/grizzly/command_class/firmware_update_md/get.ex
defmodule Grizzly.CommandClass.FirmwareUpdateMD.Get do
@behaviour Grizzly.Command
alias Grizzly.Packet
alias Grizzly.CommandClass.FirmwareUpdateMD
require Logger
require Logger
@type t :: %__MODULE__{
seq_number: Grizzly.seq_number(),
retries: non_neg_integer()
}
@type opt :: {:seq_number, Grizzly.seq_number()} | {:retries, non_neg_integer()}
defstruct seq_number: nil, retries: 2
@spec init([opt]) :: {:ok, t}
def init(opts) do
{:ok, struct(__MODULE__, opts)}
end
@spec encode(t) :: {:ok, binary}
def encode(%__MODULE__{seq_number: seq_number}) do
binary = Packet.header(seq_number) <> <<0x7A, 0x01>>
{:ok, binary}
end
# seq_numbers of command and packet don't match for this command for some devices (all?)
@spec handle_response(t, Packet.t()) ::
{:continue, t()}
| {:done, {:error, :nack_response}}
| {:done, FirmwareUpdateMD.report()}
| {:retry, t()}
| {:queued, 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(
_,
%Packet{
body: %{
command_class: FirmwareUpdateMD,
command: :report,
value: report
}
}
) do
{:done, {:ok, report}}
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, _), do: {:continue, command}
end