Downloaded packages don't work
Dear all,
for the outstep i have to clarify that I'm new to ROS and C++.
I installed my ROS Indigo on UBUNTU 14.04 as it is done in the tutorials. (full-desktop) and afterwards i added the path of the setup.bash to my .bashrc file to source it automatically for each termial startup. I also created my own catkin workspace as shown in the tutorials (catkin_init_workspace, catkin_make and so on) and afterwards i sourced the setup.bash file from my devel folder of the workspace i created. When I echo ROS_PACKAGE_PATH it looks like that:
/home/my_path/catkin_ws/src:/opt/ros/indigo/share:/opt/ros/indigo/stacks.
Sometimes I sourced the setup.bash file of my workspace by hand and sometimes (I already tried a lot) I added the command to the .bashrc file. The ROS_PACKAGE_PATH always looks like above.
After playing around with turtlesim and so on I wanted to get a driver for a gps board i have (ublox). So i changed the directory to my workspace via
cd /my_catkin_ws_path/src
and then cloned the source code (it says it is a catkinized version -- what does this mean?) to it with
git clone https://github.com/KumarRobotics/ublox.git
Then i installed the dependencies of the package with
rosdep install ublox
and finally i built it with
catkin_make
Afterwards i checked the rospack profile and ublox was there. I also checked rospack list and it was there (ublox_gps, ublox_msgs and ublox_serialization).
This was the moment when i thought i can run a ublox node. Should this be the moment? Did i forget anything? Because it just don't works, however i try to. I tried: rosrun ublox_gps ublox_gps_node and some other versions. When i go into the ublox_gps CMakeLists.txt it says "add_executeable(ublox_gps_node src/node.cpp)". Rosrun tells me then that it couldn't find executable named ublox_gps_node below ...ublox/ublox_gps.
At this moment i said to myself, ok let's try another one. I took the book "Learning ROS for Robotics Programming" and tried to install the driver for the first sensor which is used in this book, a joystick, like it is done in the book:
sudo apt-get install ros-indigo-joystick-drivers
rosstack profile & rospack profile
There was no joystick package in any of the profiles. Is this normal?
rosrun joy joy_node
also didn't work! It says: [ERROR] [1476314154.407197494]: Couldn't open joystick /dev/input/js0. Will retry every second.
What am I doing wrong? Can anyone help me?
joystick may not work if you don't have a joystick plugged in. Try running the pre-compiled talker:
rosrun roscpp_tutorials talker, because it doesn't have any hardware dependencies.The talker works. Listener also. I did not plug in a joystick, but i plugged in the gps board and it also did't work?
How is the GPS module connected to your computer? Via USB? Check if it is detected using lsusb