text: /*
   * Author: Jon Trulson <jtrulson@ics.com>
   * 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 <unistd.h>
  #include <signal.h>
  
  #include "nmea_gps.h"
  #include "upm_utilities.h"
  
  bool shouldRun = true;
  
  const size_t bufferLength = 128;
  
  void sig_handler(int signo)
  {
      if (signo == SIGINT)
          shouldRun = false;
  }
  
  int main()
  {
      signal(SIGINT, sig_handler);
  
      //! [Interesting]
  
      // Instantiate a NMEA_GPS UBLOX based i2c sensor on i2c bus 0 at
      // address 0x42
      nmea_gps_context sensor = nmea_gps_init_ublox_i2c(0, 0x42);
  
      if (!sensor)
      {
          printf("nmea_gps_init_ublox_i2c() failed.\n");
          return 1;
      }
  
      char buffer[bufferLength];
      int rv = 0;
  
      // loop, dumping NMEA data out as fast as it comes in
      while (shouldRun)
      {
          if (!nmea_gps_data_available(sensor, 0))
              upm_delay_ms(500);
          else
          {
              if ((rv = nmea_gps_read(sensor, buffer, bufferLength)) >= 0)
              {
                  int i;
                  for (i=0; i<rv; i++)
                      printf("%c", buffer[i]);
              }
          }
      }
  
      //! [Interesting]
  
      printf("Exiting\n");
  
      nmea_gps_close(sensor);
  
      return 0;
  }
  