From ef7b936d600b7d8d159acd578b85c21c4b79950b Mon Sep 17 00:00:00 2001
From: Otto Winter <otto@otto-winter.com>
Date: Fri, 15 Feb 2019 13:22:31 +0100
Subject: [PATCH] Add ADC sensor

---
 esphome/writer.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/esphome/writer.py b/esphome/writer.py
index cefb8b2a1f..0a1c3971ad 100644
--- a/esphome/writer.py
+++ b/esphome/writer.py
@@ -324,6 +324,7 @@ def gather_build_flags():
         # and only components that are lightweight (e.g. not lights because they
         # take up memory)
         build_flags |= {
+            '-DUSE_ADC_SENSOR',
             '-DUSE_BINARY_SENSOR',
             '-DUSE_DALLAS_SENSOR',
             '-DUSE_DHT_SENSOR',