/* * Author: Jon Trulson * Copyright (c) 2016 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 "bh1750.h" #include "upm_utilities.h" bool shouldRun = true; void sig_handler(int signo) { if (signo == SIGINT) shouldRun = false; } int main() { signal(SIGINT, sig_handler); //! [Interesting] // Instantiate a BH1750 sensor on default I2C bus (0), using the // default I2C address (0x23), and setting the mode to highest // resolution, lowest power mode. bh1750_context sensor = bh1750_init(BH1750_DEFAULT_I2C_BUS, BH1750_DEFAULT_I2C_ADDR, BH1750_OPMODE_H2_ONCE); if (!sensor) { printf("bh1750_init() failed.\n"); return 1; } // Every second, sample the BH1750 and output the measured lux value while (shouldRun) { float lux; bh1750_get_lux(sensor, &lux); printf("Detected Light Level (lux): %f\n", lux); upm_delay(1); } //! [Interesting] printf("Exiting\n"); bh1750_close(sensor); return 0; }