/* * Authors: Brendan Le Foll * Mihai Tudor Panu * Sarah Knepper * Jon Trulson * Copyright (c) 2014 - 2017 Intel Corporation. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include #include #include #include "light.hpp" using namespace upm; Light::Light(unsigned int pin) : m_light(light_init(pin)) { if ( !m_light ) throw std::runtime_error(std::string(__FUNCTION__) + ": light_init() failed."); } Light::~Light() { light_close(m_light); } int Light::value() { float value; if (light_get_lux(m_light, &value)) throw std::runtime_error(std::string(__FUNCTION__) + ": light_get_normalized() failed."); return (int)roundf(value); } float Light::getLuminance() { float value; if (light_get_lux(m_light, &value)) throw std::runtime_error(std::string(__FUNCTION__) + ": light_get_normalized() failed."); return value; } float Light::raw_value() { // This is a hack. Deprecated. Should be removed ASAP. int value = mraa_aio_read(m_light->aio); if (value < 0) throw std::runtime_error(std::string(__FUNCTION__) + ": mraa_aio_read() failed."); return (float)value; // ?? why a float? } void Light::setAref(float aref) { light_set_aref(m_light, aref); } void Light::setScale(float scale) { light_set_scale(m_light, scale); } void Light::setOffset(float offset) { light_set_aref(m_light, offset); } float Light::getAref() { return light_get_aref(m_light); } float Light::getScale() { return light_get_scale(m_light); } float Light::getOffset() { return light_get_offset(m_light); } float Light::getNormalized() { float value; if (light_get_normalized(m_light, &value)) throw std::runtime_error(std::string(__FUNCTION__) + ": light_get_normalized() failed."); return value; } float Light::getRawVolts() { float value; if (light_get_raw_volts(m_light, &value)) throw std::runtime_error(std::string(__FUNCTION__) + ": light_get_raw_volts() failed."); return value; }