I completed the getting started examples and also did some publishing/subscribing from matlab to standard ros nodes, but only for std_msgs. Now I want to use a custom message (foo_msg) from one of my package (foo), if I use rosmsg in the shell I can see it.
But if, in matlab I try to create publsiher, for a matlab node already created, typing : publisher = rosmatlab.publisher('TOPIC', 'foo/foo_msg', node); I get :
Error using rosmatlab.node/addPublisher (line 543) Java exception occurred: org.ros.exception.RosMessageRuntimeException: java.lang.ClassNotFoundException: foo.foo_msg at org.ros.internal.message.definition.MessageDefinitionReflectionProvider.get(MessageDefinitionReflectionProvider.java:58) at org.ros.internal.message.Md5Generator.generate(Md5Generator.java:44) at org.ros.internal.message.topic.TopicDescriptionFactory.newFromType(TopicDescriptionFactory.java:36) at org.ros.internal.node.DefaultNode.newPublisher(DefaultNode.java:270) at org.ros.internal.node.DefaultNode.newPublisher(DefaultNode.java:280) Caused by: java.lang.ClassNotFoundException: foo.foo_msg at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at org.ros.internal.message.definition.MessageDefinitionReflectionProvider.get(MessageDefinitionReflectionProvider.java:54) ... 4 more
Therefore the publsiher is not created, the same appends for the subscriber.
Does anyone know how to add customs messages ?
NOTE:-
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In 2015a, MathWorks released the ( Robotics System Toolbox ), which provides an interface from MATLAB and Simulink to ROS. You can also generate C++ code for a standalone ROS node from Simulink.
The toolbox natively supports custom messages once you install the Robotics System Toolbox Interface for ROS Custom Messages. This allows you to take arbitrary MSG and SRV files
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