From 94675c3dcce23bed5ff30410fd0e63c8055e0fe4 Mon Sep 17 00:00:00 2001
From: Mikko Ahlroth <mikko@ahlroth.fi>
Date: Mon, 9 Mar 2020 21:41:08 +0200
Subject: [PATCH] Add LED test

---
 lib/test.ex | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/lib/test.ex b/lib/test.ex
index 7c62892..91be409 100644
--- a/lib/test.ex
+++ b/lib/test.ex
@@ -9,12 +9,18 @@ defmodule ExSpeedGame.Test do
   @impl true
   def init(_) do
     ExSpeedGame.Game.ButtonInput.acquire(ExSpeedGame.Game.ButtonInput)
-    {:ok, :ok}
+    {:ok, ref} = Circuits.GPIO.open(16, :output, initial_value: 0)
+    {:ok, {ref, false}}
   end
 
   @impl true
-  def handle_info(msg, s) do
+  def handle_info(msg, {ref, state}) do
     Logger.debug(inspect(msg))
-    {:noreply, s}
+
+    new_state = not state
+
+    Circuits.GPIO.write(ref, if(new_state, do: 1, else: 0))
+
+    {:noreply, {ref, new_state}}
   end
 end