From 82139cc34548940912e490ea8743f66c530d1bc3 Mon Sep 17 00:00:00 2001 From: Masatoshi Nishiguchi Date: Sat, 28 Aug 2021 19:12:44 -0400 Subject: [PATCH] Add find_pid/1 --- lib/circuits_uart.ex | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/lib/circuits_uart.ex b/lib/circuits_uart.ex index 9c3c001..bda77d3 100644 --- a/lib/circuits_uart.ex +++ b/lib/circuits_uart.ex @@ -93,6 +93,14 @@ defmodule Circuits.UART do |> Enum.map(&circuits_uart_info/1) end + @spec find_pid(binary) :: pid() | nil + def find_pid(port_name) do + case find_pids() do + [{pid, ^port_name}] -> pid + _ -> nil + end + end + defp is_circuits_uart_process(pid) do {:dictionary, dictionary} = Process.info(pid, :dictionary) Keyword.get(dictionary, :"$initial_call") == {Circuits.UART, :init, 1}