peripheral/libupm/examples/c++/rhusb.cxx

/*
 * 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 <iostream>
#include <signal.h>

#include "rhusb.h"

using namespace std;

bool shouldRun = true;

void sig_handler(int signo)
{
  if (signo == SIGINT)
    shouldRun = false;
}

int main(int argc, char **argv)
{
  signal(SIGINT, sig_handler);

//! [Interesting]

  string defaultDev = "/dev/ttyUSB0";

  // if an argument was specified, use it as the device instead
  if (argc > 1)
    defaultDev = string(argv[1]);

  cout << "Using device " << defaultDev << endl;
  cout << "Initializing..." << endl;

  // Instantiate an RHUSB instance on defaultDev
  upm::RHUSB sensor(defaultDev);

  // output the firmware ID
  cout << "Firmware ID: " << sensor.getFirmwareID() << endl;
  cout << endl;

  // update and print available values every second
  while (shouldRun)
    {
      // update our values from the sensor
      sensor.update();

      // we show both C and F for temperature
      cout << "Temperature: " << sensor.getTemperature()
           << " C / " << sensor.getTemperature(true) << " F"
           << endl;

      cout << "Humidity: " << sensor.getHumidity()
           << " %" << endl;

      cout << endl;

      sleep(1);
    }


  cout << "Exiting..." << endl;

//! [Interesting]

  return 0;
}