daily_automated

trunk/Arduino/libraries/Gamebuino_Classic/utility/Backlight.cpp

@@ -0,0 +1,41 @@
+/*
+ * (C) Copyright 2014 Aurélien Rodot. All rights reserved.
+ *
+ * This file is part of the Gamebuino Library (http://gamebuino.com)
+ *
+ * The Gamebuino Library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ */
+
+#include "Backlight.h"
+
+void Backlight::begin() {
+#if (ENABLE_BACKLIGHT > 0)
+    //ambientLight = 0;
+    automatic = true;
+#endif
+}
+
+void Backlight::set(uint8_t value) {
+    analogWrite(BACKLIGHT_PIN, value);
+}
+
+void Backlight::update() {
+#if (ENABLE_BACKLIGHT > 0)
+    ambientLight = (ambientLight * (AMBIENTLIGHT_SMOOTHING - 1) + analogRead(AMBIENTLIGHT_PIN)) / AMBIENTLIGHT_SMOOTHING; //read value and smooth it
+    if (automatic) {
+        backlightValue = map(constrain(ambientLight, ambientLightMin, ambientLightMax), ambientLightMin, ambientLightMax, backlightMax, backlightMin);
+        set(backlightValue);
+    }
+#endif
+}