[Rock-dev] Problems with ROS-Bridge nav_msgs/OccupancyGrid

[Steffen Planthaber]

Hmm,

In the Virgo project, we didn't use the ros datatype directly in the 
orogen file, we used a mapping form ros to a rock type, that worken, 
perhaps teh issue only arises when no mappings are used?


Best, Steffen

Am 11.09.2014 um 15:05 schrieb Janosch Machowinski:
> Okay, I manged to work around
> this issue, but the whole ros bridge seems
> to be not functional.
> For example, if I try to subscribe to /tf I get this error:
> /home/coyote/rock1408/tools/orocos.rb/lib/orocos/ros/node.rb:267:in
> `input_port': cannot find topic /tf as a subscription of node
> /stereo_odometer (Orocos::NotFound)
>
> If I can mange to subscribe to a topic, no sample
> is displayed. I use this script :
>
> require 'orocos'
> include Orocos
> Orocos.initialize
> #this works, I can see all topics
> puts(Orocos::ROS.name_service().ros_graph.topics)
> ros_topic = Orocos::ROS.topic(ARGV.first)
> reader = ros_topic.reader(:type => :buffer, :size => 10)
> puts("Waiting for samples")
> while(true)
>       sample = nil
>       while((sample = reader.read_new()) == nil)
>           sleep(0.1)
>       end
>
>       puts("Got sample #{sample}")
> end
>
> Greetings
>       Janosch
>
> On 09/11/2014 11:15 AM, Janosch Machowinski wrote:
>> Hey,
>> I am trying to get an input port of the type
>> nav_msgs/OccupancyGrid. For now I did :
>>
>> using_library "nav_msgs"
>> using_library "envire"
>> import_types_from "nav_msgs/OccupancyGrid.h"
>> typekit.ros_mappings 'std/vector</envire/BinaryEvent>' =>
>> '/nav_msgs/OccupancyGrid'
>>
>> and defined an input port
>> input_port "rosOccupancyGrid", "/nav_msgs/OccupancyGrid"
>>
>> But orogen is complaining, it does not know about the type
>> /nav_msgs/OccupancyGrid. Also no toROS/fromROS stub in
>> the typekit folder is generated (there is no typkit folder at all...)
>> Any ideas ?
>> Greetings
>>        Janosch
>>
>> P.S: This is kind of urgent...
>> _______________________________________________
>> Rock-dev mailing list
>> Rock-dev at dfki.de
>> http://www.dfki.de/mailman/cgi-bin/listinfo/rock-dev
>
> _______________________________________________
> Rock-dev mailing list
> Rock-dev at dfki.de
> http://www.dfki.de/mailman/cgi-bin/listinfo/rock-dev
>


-- 
  Steffen Planthaber
  Weltraumrobotik

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