Merge branch 'master' into 'main'

.gitignore

catkin_ws/.vscode/c_cpp_properties.json

catkin_ws/.vscode/settings.json

catkin_ws/src/my_messages_pkg/CMakeLists.txt

catkin_ws/src/my_messages_pkg/launch/pub_sub.launch

catkin_ws/src/my_messages_pkg/msg/person.msg

catkin_ws/src/my_messages_pkg/package.xml

catkin_ws/src/my_messages_pkg/scripts/demo_pub_def.py

catkin_ws/src/my_messages_pkg/scripts/demo_pub_p.py

catkin_ws/src/my_messages_pkg/scripts/demo_sub_def.py

catkin_ws/src/my_messages_pkg/scripts/demo_sub_p.py

catkin_ws/src/my_messages_pkg/src/c_publisher.cpp

catkin_ws/src/my_messages_pkg/src/c_subscriber.cpp

catkin_ws/src/my_messages_pkg/src/demon_msg_pub.cpp

catkin_ws/src/my_messages_pkg/src/demon_msg_sub.cpp

catkin_ws/src/my_messages_pkg/src/encoder_save.cpp