getID.cpp

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#include "hokuyo/hokuyo.h"
#include <stdio.h>
#include <ros/console.h>

using namespace std;


int
main(int argc, char** argv)
{
  if (argc < 2 || argc > 3)
  {
    fprintf(stderr, "usage: getID /dev/ttyACM? [quiet]\nOutputs the device ID of a hokuyo at /dev/ttyACM?. Add a second argument for script friendly output.\n");
    return 1;
  }
  
  bool verbose = (argc == 2);
  
  if (!verbose)
  {
    // In quiet mode we want to turn off logging levels that go to stdout.
    log4cxx::LoggerPtr my_logger = log4cxx::Logger::getLogger(ROSCONSOLE_DEFAULT_NAME);
    my_logger->setLevel(ros::console::g_level_lookup[ros::console::levels::Error]);
  }

  hokuyo::Laser laser;
  
  for (int retries = 10; retries; retries--)
  {
    try 
    {
      laser.open(argv[1]);
      std::string device_id = laser.getID();
      if (verbose)
        printf("Device at %s has ID ", argv[1]);
      printf("%s\n", device_id.c_str());
      laser.close();
      return 0;
    }
    catch (hokuyo::Exception &e)
    {
      if (verbose)
        ROS_WARN("getID failed: %s", e.what());
      laser.close();
    }
    sleep(1);
  }

  if (verbose)
    ROS_ERROR("getID failed for 10 seconds. Giving up.");
  return 1;
}