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Fixing the headers with "extern "C" {(headers here)}" and converting some data types to c++ solved the issue! (Changing the extension to .cpp) Thanks!

I've edited my original post to reflect the error I'm now getting after attempting this method.

Gotcha, the program works up to step 3, where I need to include ros/ros.h right? How do I include ros.h? Will i make the program with "gcc progam.c -m32" or with a "rosmake program" command ?

Hi,

I have a 32-bit C program that sends data over UDP to a windows GUI. I need to integrate a simple ros subscriber node into the program to subscribe to a node publishing a joy message. I've had no luck following the tutorials or methods I've been able to find. What is the normal method for doing such a task?

I've checked a couple of Q/A already, such as: http://answers.ros.org/question/3277/wrap-existing-crrcsim-project-in-ros with no luck.

EDIT:

After making a new project, adding the file to the CMakeLists.txt, and adding ros.h to the c program, I get the following error:

In file included from /opt/ros/electric/stacks/ros_comm/utilities/rostime/include/ros/time.h:53:0, from /opt/ros/electric/stacks/ros_comm/clients/cpp/roscpp/include/ros/ros.h:38, from .../ros_workspace/project_1/src/project_1.c:26:

/opt/ros/electric/stacks/ros_comm/utilities/cpp_common/include/ros/platform.h:55:18:

fatal error: string: No such file or directory

Thanks! I thought this was the source of my error, but I see it successfully generated the msg_gen folder and files in the package folder.

I've followed the ros tutorial for creating a custom message, but I'm unsure as to where to put it. Does it go in ros_workspace/package/msg/CustomMessage.msg? Or does it go into opt/ros/electric/stacks? If so, where exactly?

I'm making a node to publish a Vehicle.msg message filled by the Joy driver. I'm using the turtle_teleop_joy tutorial as my base. I need the custom message to define the axes.

Thanks! If I were to use RoS for Windows, so that RoS would already handle the networking/communication, how would I pull that data stream from Windows RoS to put it in a seperate C++ struct?

Hi,

I'm looking to use the a Data Stream from RoS to fill out a C++ Struct for visual output on a Windows GUI.

Currently, the data would go from being published on Ubuntu to a listener on Windows, then the data needs to be put into the C++ struct. I'm not sure how to accomplish that last bit. How would you normally move a data stream to a usable output (outside of RoS)?

Thanks for any help!