Alice63's profile - activity

Hello, Although the website provides methods installing ros on arm, it is an armhf version of Ubuntu .However,I use an armel version of Ubuntu.So I want to install ros from source on the armel version of Ubuntu according to this page http://wiki.ros.org/groovy/Installati... When I excute

$ rosinstall_generator ros_comm --rosdistro groovy --deps --wet-only > groovy-ros_comm-wet.rosinstall

there was an error as follows,

Traceback (most recent call last):
  File "/usr/local/bin/rosinstall_generator", line 141, in <module>
    rc = main()
  File "/usr/local/bin/rosinstall_generator", line 129, in main
    upstream_version_tag=args.upstream, upstream_source_version=args.upstream_development)
  File "/usr/local/lib/python2.7/dist-packages/rosinstall_generator/generator.py", line 247, in generate_rosinstall
    wet_package_names, unreleased_repo_names = _get_packages_for_repos(distro_name, repo_names)
  File "/usr/local/lib/python2.7/dist-packages/rosinstall_generator/generator.py", line 93, in _get_packages_for_repos
    wet_distro = get_wet_distro(distro_name)
  File "/usr/local/lib/python2.7/dist-packages/rosinstall_generator/generator.py", line 213, in get_wet_distro
    _wet_distro = _get_wet_distro(distro_name)
  File "/usr/local/lib/python2.7/dist-packages/rosinstall_generator/distro.py", line 45, in get_distro
    return get_cached_distribution(index, distro_name)
  File "/usr/local/lib/python2.7/dist-packages/rosdistro/__init__.py", line 134, in get_cached_distribution
    cache = get_distribution_cache(index, dist_name)
  File "/usr/local/lib/python2.7/dist-packages/rosdistro/__init__.py", line 160, in get_distribution_cache
    yaml_gz_str = load_url(url, skip_decode=True)
  File "/usr/local/lib/python2.7/dist-packages/rosdistro/loader.py", line 59, in load_url
    raise URLError(str(e) + ' (%s)' % url)
urllib2.URLError: <urlopen error <urlopen error [Errno -2] Name or service not known> (http://ros.org/rosdistro/groovy-cache.yaml.gz)>

Please help me slove the problem,thank you very much.

Hi everyone, I was trying to build the environment map with slam and hokuyo on my robot. At first, I can view any image. But some times,there was error:

Error: m_distanceThresholdCheck overridden!!!! *************
m_distanceThresholdCheck=20
Old Odometry Pose= 0.530987 -6.86704 -2.86229e-17
New Odometry Pose (reported from observation)=  22.7237  -20.1116 0.255681
***********************************************************************
** The Odometry has a big jump here. This is probably a bug in the   **
** odometry/laser input. We continue now, but the result is probably **
** crap or can lead to a core dump since the map doesn't fit.... C&G **
***********************************************************************
Laser Pose= 22.7237 -20.1116 0.255681
terminate called after throwing an instance of 'std::bad_alloc'
  what():  std::bad_alloc
[slam_gmapping-1] process has died [pid 3044, exit code -6, cmd /opt/ros/hydro/lib/gmapping/slam_gmapping __name:=slam_gmapping __log:=/home/shixiaolu/.ros/log/eb024742-a87b-11e5-a7f9-e0db55f0e591/slam_gmapping-1.log].
log file: /home/shixiaolu/.ros/log/eb024742-a87b-11e5-a7f9-e0db55f0e591/slam_gmapping-1*.log

than, it can not continue to build the map. Is it due to the Odometry has a big jump. Sometimes，there was the same error but it can go on build a map . For For example

Error: m_distanceThresholdCheck overridden!!!! *************
m_distanceThresholdCheck=20
Old Odometry Pose= 0.554374 -3.801 -2.64545e-17
New Odometry Pose (reported from observation)= 22.9707 -3.89147 -0.00402061
***********************************************************************
** The Odometry has a big jump here. This is probably a bug in the   **
** odometry/laser input. We continue now, but the result is probably **
** crap or can lead to a core dump since the map doesn't fit.... C&G **
***********************************************************************
Laser Pose= 22.9707 -3.89147 -0.00402061
Deleting Nodes: 0 1 3 4 5 6 8 9 10 11 12 13 14 16 17 18 19 20 21 22 23 26 29 30 31 35 36 37 38 40 41 42 43 44 45 49 51 52 53 54 55 56 57 58 59 60 61 62 63 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 Done
Deleting old particles...Done
Copying Particles and  Registering  scans... Done
Laser Pose= 22.7086 -3.89028 -0.00359255
Deleting Nodes: 18 26 27 28 29 30 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 68 72 73 74 75 76 77 78 79 Done
Deleting old particles...Done
Copying Particles and  Registering  scans... Done
Laser Pose= 22.722 -3.89064 -0.00412477
Registering Scans:Done
Laser Pose= 22.6339 -3.89101 -0.00560901
Registering Scans:Done
Laser Pose= 22.3059 -3.88877 -0.00378321

Please help me,How to solve the problem.

@David Lu I have uploaded the image of tf tree

Hello everybody, I'm trying to using navigation stack in the rviz. I have the launch file looks like this:

 <launch>
    <param name="/use_sim_time" value="false" />
     <arg name="urdf_file" default="$(find xacro)/xacro.py '$(find smartcar_description)/urdf/smartcar.urdf.xacro'" />
    <arg name="gui" default="false" />
    <param name="robot_description" command="$(arg urdf_file)" />
    <param name="use_gui" value="$(arg gui)"/>

    <node  name="arbotix" pkg="arbotix_python" type="arbotix_driver" output="screen">
        <rosparam command="delete" param="/arbotix" />
        <rosparam file="$(find smartcar_description)/config/smartcar_arbotix.yaml" command="load" />
        <param name="sim" value="true"/>
        </node>
    <node name="joint_state_publisher" pkg="joint_state_publisher" type="joint_state_publisher" >
    </node>
        <node name="robot_state_publisher" pkg="robot_state_publisher" type="state_publisher">
        <param name="publish_frequency" type="double" value="20.0" />
        </node> 
      <node name="map_server" pkg="map_server" type="map_server" args="$(find rbx1_nav)/maps/test_map.yaml"/>  
     <include file="$(find rbx1_nav)/launch/fake_move_base_amcl.launch" />
     <node pkg="fake_localization" type="fake_localization" name="fake_localization" clear_params="true" output="screen">
      <remap from="base_pose_ground_truth" to="odom" />
      <param name="global_frame_id" value="map" />
      <param name="base_frame_id" value="base_link" />
       </node>
 <node name="rviz" pkg="rviz" type="rviz" args="-d $(find rbx1_nav)/nav.rviz" />  
</launch>

My fake_move_base_amcl.launch file looks like this:

<launch>

  <node pkg="move_base" type="move_base" respawn="false" name="move_base" clear_params="true" output="screen">
    <rosparam file="$(find rbx1_nav)/config/fake/costmap_common_params.yaml" command="load" ns="global_costmap" />
    <rosparam file="$(find rbx1_nav)/config/fake/costmap_common_params.yaml" command="load" ns="local_costmap" />
    <rosparam file="$(find rbx1_nav)/config/fake/local_costmap_params.yaml" command="load" />
    <rosparam file="$(find rbx1_nav)/config/fake/global_costmap_params.yaml" command="load" />
    <rosparam file="$(find rbx1_nav)/config/fake/base_local_planner_params.yaml" command="load" />
  </node>

</launch>

when I run the launch file,there are map and RobotModel.But no autonomous navigation. The Warning as following:

[INFO] [WallTime: 1441624427.388872] Started DiffController (base_controller). Geometry: 0.26m wide, 4100.0 ticks/m.
process[rviz-8]: started with pid [16162]
[ WARN] [1441624432.486553111]: Waiting on transform from base_footprint to map to become available before running costmap, tf error: 
[ WARN] [1441624437.562957259]: Waiting on transform from base_footprint to map to become available before running costmap, tf error:

Thank you for any kind of help..

the tf tree looks like:

Hello,I want to cross compile rospackage for arm.I do following the website http://answers.ros.org/question/19107... . I have created rostoolchain.cmake file like this:

cmake_minimum_required(VERSION 2.4.6)
include($ENV{ROS_ROOT}/core/rosbuild/rostoolchain.cmake)
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_C_COMPILER /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-linux-gcc)
set(CMAKE_CXX_COMPILER /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-linux-g++)
set(CMAKE_FIND_ROOT_PATH /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain)
set(CMAKE_LIBRARY_PATH /opt/freescale/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/lib /home/znzx/boost/lib /opt/ros/hydro/lib)
set(CMAKE_INCLUDE_PATH  /home/znzx/boost/include /opt/ros/hydro/include /usr/include) 
set(BOOST_LIBRARY  /home/znzx/boost/lib)
set(BOOST_INCLUDE  /home/znzx/boost/include)
set(BOOST_ROOT /home/znzx/boost)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)

When I excute $./src/catkin/bin/catkin_make_isolated -DCMAKE_TOOLCHAIN_FILE=/home/znzx/catkin_ws/src/rostoolchain.cmake I got the following errors:

-- Looking for include files CMAKE_HAVE_PTHREAD_H - found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE 
-- Found gtest sources under '/usr/src/gtest': gtests will be built
CMake Error at cmake/assert.cmake:17 (message):


  Assertion failed: check for file existence, but filename
  (RT_LIBRARY-NOTFOUND) unset.  Message: RT Library

Call Stack (most recent call first):
  cmake/tools/rt.cmake:42 (assert_file_exists)
  cmake/all.cmake:148 (include)
  CMakeLists.txt:8 (include)


-- Configuring incomplete, errors occurred!
<== Failed to process package 'catkin': 
  Command 'cmake /home/znzx/ros_catkin_ws/src/catkin -DCATKIN_DEVEL_PREFIX=/home/znzx/ros_catkin_ws/devel_isolated/catkin -DCMAKE_INSTALL_PREFIX=/home/znzx/ros_catkin_ws/install_isolated -DCMAKE_TOOLCHAIN_FILE=/home/znzx/catkin_ws/src/rostoolchain.cmake' returned non-zero exit status 1

Reproduce this error by running:
==> cd /home/znzx/ros_catkin_ws/build_isolated/catkin && cmake /home/znzx/ros_catkin_ws/src/catkin -DCATKIN_DEVEL_PREFIX=/home/znzx/ros_catkin_ws/devel_isolated/catkin -DCMAKE_INSTALL_PREFIX=/home/znzx/ros_catkin_ws/install_isolated -DCMAKE_TOOLCHAIN_FILE=/home/znzx/catkin_ws/src/rostoolchain.cmake

Command failed, exiting.

What is RT library? How can I do to solve the problem? Please help me.thank you very much

@GummyBear I want to cross compile my custom ROS packages.Is it must cross compile ros,at first? My board can run roscore,but it achieve not by cross-compiler.Can I cross compile my own package wthout cross-compiling roscore?

Hello. Due to using the armel, I install the ros from the source. Now the roscore can run on the arm succesfully. The ROS packages are compiled directly on board. I want to cross-compile it. But the eros seems to have been abandoned. So I do as the following: Create the cmakelists.txt

cmake_minimum_required(VERSION 2.4.6)
include($ENV{ROS_ROOT}/core/rosbuild/rostoolchain.cmake)  
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_C_COMPILER /opt/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-linux-gcc)
set(CMAKE_CXX_COMPILER /opt/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain/bin/arm-linux-g++)
set(CMAKE_FIND_ROOT_PATH /opt/usr/local/gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12/fsl-linaro-toolchain)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM BOTH)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
set(LIBRARY_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/lib)    
ADD_EXECUTABLE(mrobot_driver src/mrobot_driver.cpp src/mrobot_comms.c)
SET(BOOST_ROOT /usr/include/boost)

than :

 $ camke .
 $  make

I got the error messages:

Building CXX object CMakeFiles/mrobot_driver.dir/src/mrobot_driver.o
In file included from /opt/ros/hydro/include/ros/ros.h:38:0,
                 from /home/znzx/cmake/ros/mrobot_driver1/src/mrobot_driver.h:40,
                 from /home/znzx/cmake/ros/mrobot_driver1/src/mrobot_driver.cpp:40:
/opt/ros/hydro/include/ros/time.h:58:50: fatal error: boost/math/special_functions/round.hpp: No such file or directory
compilation terminated.
make[2]: *** [CMakeFiles/mrobot_driver.dir/src/mrobot_driver.o] Error 1
make[1]: *** [CMakeFiles/mrobot_driver.dir/all] Error 2
make: *** [all] Error 2

While , boost/math/special_functions/round.hpp does exists. And the path of boost is right. Is the method of cross_compiling correct? Please help me.thank you very much.

Hello,I want to cross-compile ROS for ARM.I am trying to use eros according to http://wiki.ros.org/eros/Installation . When I run $ rosinstall /opt/ros eros_diamondback.rosinstall It shows：ERROR in config：Is not a local file,nor a valid URL [eros_diamondback.rosinstall]:unknown url type:eros_diamondback.rosinstall

svn co https://code.ros.org/svn/eros/tags/diamondback ./eros

It also can not install successfully . Is the eros discarded?

Hello, I want to cross-compile the packages of ros, so that it can use on the arm.I am doing according to http://wiki.ros.org/hydro/Installatio... . When I execute: $ bitbake core-image-ros-roscore ,there was the following error:

Loading cache: 100% |######################################################| ETA:  00:00:00
Loaded 2176 entries from dependency cache.
Parsing recipes: 100% |####################################################| Time: 00:00:01
Parsing of 1701 .bb files complete (1698 cached, 3 parsed). 2178 targets, 68 skipped, 0 masked, 0 errors.
ERROR: No recipes available for:
  /home/znzx/devel/meta-ros/recipes-devtools/python/python_2.7.3.bbappend
  /home/znzx/devel/meta-ros/recipes-devtools/python/python-native_2.7.3.bbappend

Summary: There was 1 ERROR message shown, returning a non-zero exit code.

Please help me to solve the problem.Thank you very much.