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0.4.2
Elixir Z-Wave library
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lib/grizzly/zwave.ex
defmodule Grizzly.ZWave do
@moduledoc """
Module for Z-Wave protocol specific functionality and information
"""
alias Grizzly.ZWave.Command
alias Grizzly.ZWave.Commands
alias Grizzly.ZWave.DecodeError
@type seq_number :: non_neg_integer()
@type node_id :: non_neg_integer()
@type endpoint_id :: 0..127
@typedoc """
The volume at which a tone is played.
## Values
* `0` - Indicates an off/mute volume setting.
* `1..100` - Indicates the actual volume setting from 1% to 100%.
* `255` - Restore the most recent non-zero volume setting. This value MUST be
ignored if the current volume is not zero. This value MAY be used to set the
default tone without modifying the volume setting.
"""
@type sound_switch_volume :: 0..100 | 255
@spec from_binary(binary()) :: {:ok, Command.t()} | {:error, DecodeError.t()}
def from_binary(binary) do
Logger.metadata(zwave_command: inspect(binary, base: :hex, limit: 100))
Commands.decode(binary)
end
@spec to_binary(Command.t()) :: binary()
def to_binary(command) do
Command.to_binary(command)
end
@crc16_aug_ccitt :cerlc.init(:crc16_aug_ccitt)
@doc """
CRC-16/AUG-CCITT
"""
@spec crc16_aug_ccitt(binary() | [byte()]) :: 0..0xFFFF
def crc16_aug_ccitt(data) do
:cerlc.calc_crc(data, @crc16_aug_ccitt)
end
end