From ee5a5b9f6c7aadd4302e6452ee38f072b67009dd Mon Sep 17 00:00:00 2001
From: fruchti <fruchti@gvfr.de>
Date: Thu, 16 Jul 2020 23:19:28 +0200
Subject: [PATCH] Fix light sensor underflow

---
 build-number.txt   | 2 +-
 src/light_sensor.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/build-number.txt b/build-number.txt
index a5c3fde..d9061d9 100644
--- a/build-number.txt
+++ b/build-number.txt
@@ -1 +1 @@
-373
+375
diff --git a/src/light_sensor.c b/src/light_sensor.c
index 0b10abe..4ec450f 100644
--- a/src/light_sensor.c
+++ b/src/light_sensor.c
@@ -89,7 +89,7 @@ void LightSensor_Poll(void)
             + LIGHTSENSOR_LOW_BOUND * range / LIGHTSENSOR_MAX;
         int high = LightSensor_MinimumBrightness
             + LIGHTSENSOR_HIGH_BOUND * range / LIGHTSENSOR_MAX;
-        LightSensor_RelativeBrightness = (LightSensor_AbsoluteBrightness - low)
+        LightSensor_RelativeBrightness = ((int)LightSensor_AbsoluteBrightness - low)
             * LIGHTSENSOR_MAX / (high - low);
         if(LightSensor_RelativeBrightness < 0)
         {