Hi All,

Some more info on my configuration:Ubuntu 9.10, ode 0.11.1, ogre v1-7-0,
bullet-2.76, gazebo 0.10.0.

I tried a new world file it is the empty.world with the pioneer robot added
(included below).

to...@tomas-desktop:~/gazebo-0.10.0/worlds$ gazebo tomas-test3.world 
Gazebo multi-robot simulator, version 0.10.0

Part of the Player/Stage Project [http://playerstage.sourceforge.net].
Copyright (C) 2003 Nate Koenig, Andrew Howard, and contributors.
Released under the GNU General Public License.

[/home/tomas/gazebo-0.10.0/server/GazeboConfig.cc:103]
  Gazebo Path[/usr/local/share/gazebo]
[/home/tomas/gazebo-0.10.0/server/GazeboConfig.cc:115]
  Ogre Path[/usr/local/lib/OGRE]
Gazebo successfully initialized
deleting /tmp/gazebo-tomas-0/graphics3d.default
Segmentation fault (when I do a File Quit)

The code can connect but when I send a new commands with velocity nothing
happens:
 
Cmd Velocity (x,y,z)+0.00000 +0.00000 +0.00000
Velocity (x,y,z):+0.00000 +0.00000 +0.00000
Roll,pitch,yaw:+0.00000 +0.00000 +0.00000
Press u,d or s
u
Cmd Velocity (x,y,z)+0.500000 +0.00000 +0.00000
Velocity (x,y,z):+0.00000 +0.00000 +0.00000
Roll,pitch,yaw:+0.00000 +0.00000 +0.00000
Press u,d or s
(.....)
Cmd Velocity (x,y,z)+30.5000 +0.00000 +0.00000
Velocity (x,y,z):+0.00000 +0.00000 +0.00000
Roll,pitch,yaw:+0.00000 +0.00000 +0.00000
Press u,d or s

Here is the world file I used:

<?xml version="1.0"?>

<gazebo:world
  xmlns:xi="http://www.w3.org/2001/XInclude";
  xmlns:gazebo="http://playerstage.sourceforge.net/gazebo/xmlschema/#gz";
  xmlns:model="http://playerstage.sourceforge.net/gazebo/xmlschema/#model";
  xmlns:sensor="http://playerstage.sourceforge.net/gazebo/xmlschema/#sensor";
  xmlns:body="http://playerstage.sourceforge.net/gazebo/xmlschema/#body";
  xmlns:geom="http://playerstage.sourceforge.net/gazebo/xmlschema/#geom";
  xmlns:joint="http://playerstage.sourceforge.net/gazebo/xmlschema/#joint";
 
xmlns:interface="http://playerstage.sourceforge.net/gazebo/xmlschema/#interface";
 
xmlns:rendering="http://playerstage.sourceforge.net/gazebo/xmlschema/#rendering";
 
xmlns:controller="http://playerstage.sourceforge.net/gazebo/xmlschema/#controller";
 
xmlns:physics="http://playerstage.sourceforge.net/gazebo/xmlschema/#physics";
>

  <verbosity>5</verbosity>

  <physics:ode>
    <stepTime>0.001</stepTime>
    <gravity>0 0 -9.8</gravity>
    <cfm>10e-2</cfm>
    <erp>0.2</erp>

    <!-- updateRate: <0 == throttle simTime to match realTime.
                      0 == No throttling
                     >0 == Frequency at which to throttle the sim -->
    <updateRate>0</updateRate>
  </physics:ode>

  <rendering:gui>
    <type>fltk</type>
    <size>800 600</size>
    <pos>0 0</pos>
  </rendering:gui>
  <rendering:ogre>
    <ambient>1 1 1 1</ambient>
    <shadowTechnique>stencilAdditive</shadowTechnique>
    <grid>false</grid>
  </rendering:ogre>

   <!-- Ground Plane -->
   <model:physical name="plane1_model">
    <xyz>0 0 0</xyz>
    <rpy>0 0 0</rpy>
    <static>true</static>

    <body:plane name="plane1_body">
      <geom:plane name="plane1_geom">
        <normal>0 0 1</normal>
        <size>100 100</size>
        <segments>10 10</segments>
        <uvTile>100 100</uvTile>
        <material>Gazebo/GrayGrid</material>
        <mu1>109999.0</mu1>
        <mu2>1000.0</mu2>
      </geom:plane>
    </body:plane>
  </model:physical>

  <model:physical name="pioneer2dx_model1">
    <xyz>1 1 0.5</xyz>
    <rpy>0 0 0</rpy>
    <include embedded="true">
      <xi:include href="models/pioneer2dx.model" />
    </include>
  </model:physical>

</gazebo:world>

Thanks,
Tomas


tarredondo wrote:
> 
> Hello All,
> 
> I have the same problem on gazebo 0.10. When using the wizbot.world and in
> /tmp/gazebo-tomas-0 directory I
> dont see an interface file created and I get this error:
> error opening device file
> /tmp/gazebo-tomas-0/position.pioneer2dx_model1::position_iface_0 : No such
> file or directory
> So I figured a problem with the holonome controler in that model...
> 
> If I try to use the ~/gazebo-0.10.0/worlds$ gazebo pioneer2dx.world
> I see the interface file created and I can connect fine to the interface
> but there is no response from the robot when trying to set cmd velocity it
> just sits there:
> 
> to...@tomas-desktop:/tmp/gazebo-tomas-0$ ls
> factory.default
> gazebo.pid
> graphics3d.box1_model
> graphics3d.default
> graphics3d.pioneer2dx_model1
> graphics3d.pioneer2dx_model1::laser
> graphics3d.pioneer2dx_model2
> graphics3d.pioneer2dx_model2::laser
> graphics3d.plane1_model
> graphics3d.point_white
> graphics3d.ramp_model
> graphics3d.ramp_model2
> graphics3d.sphere1_model
> position.pioneer2dx_model1::position_iface_0
> position.pioneer2dx_model2::position_iface_0
> simulation.default
> 
> 
> Here is a code fragment:
>   /// Open the Position interface
>   try
>   {
>     posIface->Open(client, "pioneer2dx_model1::position_iface_0");
>   }
>   catch (std::string e)
>   {
>     std::cout << "Gazebo error: Unable to connect to the position
> interface\n" << e << "\n";
>     return -1;
>   }
> ...
> 
>   while(1)
> {
>    posIface->Lock(1);
>    std::cout  << "Cmd Velocity (x,y,z)" <<
> posIface->data->cmdVelocity.pos.x << " " <<
> posIface->data->cmdVelocity.pos.y << " " << 
> posIface->data->cmdVelocity.pos.z << std::endl;
>    posIface->Unlock();
>    posIface->Lock(1);
>    std::cout  << "Velocity (x,y,z):" << posIface->data->velocity.pos.x <<
> " " << posIface->data->velocity.pos.y << " " << 
> posIface->data->velocity.pos.z << std::endl;
>    posIface->Unlock();
>    posIface->Lock(1);
>    std::cout  << "Roll,pitch,yaw:" << posIface->data->pose.roll << " " <<
> posIface->data->pose.pitch << " " <<  posIface->data->pose.yaw <<
> std::endl;
>    posIface->Unlock();
> 
>    std::cout  << "Press u,d or s" << std::endl;
>   c=getchar();
>   if (c=='u')
>   {
>   posIface->Lock(1);
>   posIface->data->cmdEnableMotors = 1;
>   posIface->data->cmdVelocity.pos.x += 0.5;
>   posIface->Unlock();
>   }
>   else
>   if (c=='d')
>   {
>   posIface->Lock(1);
>   posIface->data->cmdEnableMotors = 1;
>   posIface->data->cmdVelocity.pos.x -= 0.5;
>   posIface->Unlock();
>   }
>   if (c=='s')
>   {
>   posIface->Lock(1);
>   posIface->data->cmdEnableMotors = 1;
>   posIface->data->cmdVelocity.pos.x = 0;
>   posIface->Unlock();
>   }
> 
>    usleep(100000);
>    }
> 
> I looked around for other postings and found nothing that helped. Thanks
> for any info.
> Tomas
> 
> 
> 
> Kamil Muszyński wrote:
>> 
>> Hi all, 
>> 
>> I've moved from gazebo 0.8 to svn version of gazebo 0.9. I've been trying
>> to run wizbot.world (just a wizbot model - so I removed cam, cylinder and
>> pioneer models). My aim was to apply speed to wizbot's wheels using only
>> libgazebo and position interface (without player). This is the client
>> code used:
>> 
>> #include <iostream>
>> #include <string>
>> #include <gazebo.h>
>> #include <stdio.h>
>> 
>> int main(int argc, char * argv[]){
>>      if (argc != 3) return 1;
>> 
>>      float x = atof(argv[1]);
>>      float y = atof(argv[2]);
>> 
>>      gazebo::Client * client = new gazebo::Client();
>>      gazebo::SimulationIface * simIface = new gazebo::SimulationIface();
>>      int serverId = 0;
>>      std::string id("default");
>> 
>>      try {
>>              /// Connect to the libgazebo server
>>              client->ConnectWait(serverId, GZ_CLIENT_ID_USER_FIRST);
>>              /// Open the Simulation Interface
>>              simIface->Open(client, id);
>>              simIface->Unpause();
>>      } catch (std::string e) {
>>              std::cout<<"Gazebo error: Unable to connect to the sim 
>> interface\n";
>>              exit(0);
>>      }
>> 
>>      gazebo::PositionIface * posIface = new gazebo::PositionIface();
>>      try {
>>              posIface->Open(client, "wizbot_model1::position_iface_0");
>>      } catch (std::string ex) {
>>              std::cout<<ex<<std::endl;
>>              exit(0);
>>      }
>> 
>>      std::cout<<"Applying speed\n";
>>      posIface->Lock(1);
>>      posIface->data->cmdEnableMotors = 1;
>>      posIface->data->cmdVelocity.pos.x = x;
>>      posIface->data->cmdVelocity.pos.y = y;
>>      posIface->Unlock();
>> 
>> 
>>      while(true){
>>              usleep(20000);
>>      }
>> 
>> 
>>      posIface->Destroy();
>>      delete posIface;
>>      simIface->Close();
>>      delete simIface;
>>      client->Disconnect();
>>      delete client;
>> 
>>      return 0;
>> }
>> 
>> -------------
>> 
>> It turns out that this code has no effect - when I checked void
>> Holonome3Sw_Position2d::UpdateChild() code that is used for controlling
>> wizbot, some speed values (different than 0) are applied to joints, but
>> wizbot is not moving. After some investigation I think I found a bug in
>> method (file gazebo/server/physics/ode/ODEHingeJoint.cc)
>> 
>> void ODEHingeJoint::SetVelocity(int /*index*/, double angle)
>> {
>>   this->SetParam(angle, dParamVel); // shouldn't be
>> this->SetParam(dParamVel, angle) ?
>> }
>> 
>> but this fix didn't help and robot is still not moving (like if
>> simulation was paused, which is not ;) ). 
>> 
>> I am using ogre 1.6.4 and ode 0.11.1 and ubuntu 9.10, if that could be
>> useful. Can anyone give me some hints? :)
>> 
>> 
>> 
>> 
>> Also I get segmentation fault after clicking on robot model (wizbot,
>> pionieer and others - ctrl + rmb) or on model's name in the gazebo menu,
>> here is some backtrace
>> 
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x04f7ce85 in Fl_Menu_::add(char const*, int, void (*)(Fl_Widget*,
>> void*), void*, int) () from /usr/lib/libfltk.so.1.1
>> (gdb) bt
>> #0  0x04f7ce85 in Fl_Menu_::add(char const*, int, void (*)(Fl_Widget*,
>> void*), void*, int) () from /usr/lib/libfltk.so.1.1
>> #1  0x00632735 in gazebo::Sidebar::Update() () from
>> /usr/local/lib/libgazebo_gui.so.0.9.0
>> #2  0x006264ab in gazebo::Gui::Update() () from
>> /usr/local/lib/libgazebo_gui.so.0.9.0
>> #3  0x005ded7e in gazebo::Simulator::MainLoop() () from
>> /usr/local/lib/libgazebo_server.so.0.9.0
>> #4  0x0804a464 in main ()
>> 
>> Should I get newest fltk version?
>> 
>> Best regards,
>> 
>> Kamil
>> 
>> 
>> 
> 
> 

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