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