/* * Author: Brendan Le Foll <brendan.le.foll@intel.com> * Contributions: Mihai Tudor Panu <mihai.tudor.panu@intel.com> * Copyright (c) 2014 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 <unistd.h> #include "hmc5883l.h" int main(int argc, char **argv) { //! [Interesting] // Instantiate on I2C upm::Hmc5883l* compass = new upm::Hmc5883l(0); int16_t *pos; compass->set_declination(0.2749); // Set your declination from true north in radians // Print out the coordinates, heading, and direction every second while(true){ compass->update(); // Update the coordinates pos = compass->coordinates(); fprintf(stdout, "coor: %5d %5d %5d ", pos[0], pos[1], pos[2]); fprintf(stdout, "heading: %5.2f direction: %3.2f\n", compass->heading(), compass->direction()); sleep(1); } //! [Interesting] return 0; }