Execute GPIO functions on the production server.

firmware/lib/firmware/application.ex

@@ -21,11 +21,10 @@ defmodule Firmware.Application do
 
   # List all child processes to be supervised
   def children(:host) do
-    [
-      # Children that only run on the host
-      # Starts a worker by calling: Firmware.Worker.start_link(arg)
-      # {Firmware.Worker, arg},
-    ]
+    {:ok, _} = Node.start(:"host@0.0.0.0")
+    Node.set_cookie(:testcookie)
+    true = Node.connect(:"esrom@nerves.local")
+    []
   end
 
   def children(_target) do

firmware/mix.exs

@@ -63,7 +63,7 @@ defmodule Firmware.MixProject do
   def release do
     [
       overwrite: true,
-      cookie: "#{@app}_cookie",
+      cookie: "testcookie",
       include_erts: &Nerves.Release.erts/0,
       steps: [&Nerves.Release.init/1, :assemble]
     ]