98 lines
2.4 KiB
Elixir
98 lines
2.4 KiB
Elixir
defmodule FarmbotOS.Platform.Target.Uevent.Supervisor do
|
|
@moduledoc """
|
|
Supervisor responsible for monitoring the Uevent process
|
|
"""
|
|
|
|
use Supervisor
|
|
|
|
def start_link(args) do
|
|
Supervisor.start_link(__MODULE__, args, name: __MODULE__)
|
|
end
|
|
|
|
def init([]) do
|
|
children = [{FarmbotOS.Platform.Target.Uevent, []}]
|
|
Supervisor.init(children, strategy: :one_for_one)
|
|
end
|
|
end
|
|
|
|
defmodule FarmbotOS.Platform.Target.Uevent do
|
|
@moduledoc """
|
|
Process responsible for monitoring uevent linux subsystem for
|
|
events relating to serial devices being plugged and unplugged
|
|
"""
|
|
|
|
use GenServer
|
|
require Logger
|
|
require FarmbotCore.Logger
|
|
require FarmbotTelemetry
|
|
alias FarmbotCore.{Config, FirmwareTTYDetector}
|
|
|
|
@doc false
|
|
def start_link(args) do
|
|
GenServer.start_link(__MODULE__, args, name: __MODULE__)
|
|
end
|
|
|
|
@impl GenServer
|
|
def init([]) do
|
|
:ok = SystemRegistry.register()
|
|
{:ok, nil}
|
|
end
|
|
|
|
@impl GenServer
|
|
def handle_info({:system_registry, :global, new_reg}, %{} = old_reg) do
|
|
new_ttys = get_in(new_reg, [:state, "subsystems", "tty"]) || []
|
|
old_ttys = get_in(old_reg, [:state, "subsystems", "tty"]) || []
|
|
|
|
case new_ttys -- old_ttys do
|
|
[new] -> new |> List.last() |> maybe_new_tty()
|
|
[_ | _] -> Logger.warn("Multiple new tty devices detected. Ignoring.")
|
|
[] -> :ok
|
|
end
|
|
|
|
{:noreply, new_reg}
|
|
end
|
|
|
|
def handle_info({:system_registry, :global, reg}, _) do
|
|
{:noreply, reg}
|
|
end
|
|
|
|
@doc false
|
|
def maybe_new_tty("ttyUSB" <> _ = tty), do: new_tty(tty)
|
|
def maybe_new_tty("ttyACM" <> _ = tty), do: new_tty(tty)
|
|
def maybe_new_tty("ttyS" <> _), do: :ok
|
|
def maybe_new_tty("tty" <> _), do: :ok
|
|
|
|
def maybe_new_tty(unknown) do
|
|
Logger.debug("Unknown tty: #{inspect(unknown)}")
|
|
end
|
|
|
|
# called when a new TTY is detected
|
|
@doc false
|
|
def new_tty(tty) do
|
|
case FirmwareTTYDetector.tty() do
|
|
nil ->
|
|
FarmbotTelemetry.event(:firmware, :tty_detected, nil, tty: tty)
|
|
FarmbotCore.Logger.busy(1, "new firmware interfaces detected: #{tty}")
|
|
FirmwareTTYDetector.set_tty(tty)
|
|
|
|
Config.update_config_value(
|
|
:bool,
|
|
"settings",
|
|
"firmware_needs_flash",
|
|
true
|
|
)
|
|
|
|
Config.update_config_value(
|
|
:bool,
|
|
"settings",
|
|
"firmware_needs_open",
|
|
false
|
|
)
|
|
|
|
tty ->
|
|
Logger.debug("firmware interface already detected: #{tty}")
|
|
:ok
|
|
end
|
|
end
|
|
end
|