ROS driver for FITXXX laser.

User Guide: 1. move FIT-XXX file into ros workspace 2. run catkin_make in terminal in ros workspace 3. modify host_ip and port num for your laser. 4. set your Ethernet IPv4 address to 192.168.1.xxx (different than your host_ip and Netmask to 255.255.255.0 5. roslaunch fitxxx FITXXX.launch or roslaunch fitxxx FITXXX_display.launch to start fitxxx ros node.

ROS topic: sensor_msgs/LaserScan -> "/scan"

TF frame: /laser (default)

ROS Service: 1. "/fitxxx/disconnect_laser_srv" * disconnect laser, require restart the node to reconnect laser.

2. "/fitxxx/start_laser_srv"
	* start receiving continous sensor_msgs/LaserScan.

3. "/fitxxx/stop_laser_srv"
	* stop receiving continous sensor_msgs/LaserScan.
	* example: rosservice call /fitxxx/stop_laser_srv