File _service:obs_scm:README.en.md of Package std_msgs

# std_msgs

#### Description
std_msgs Standard ROS Messages including common message types representing primitive data types and other basic message constructs, such as multiarrays. contains wrappers for ROS primitive types, which are documented in the msg specification. It also contains the Empty type, which is useful for sending an empty signal. However, these types do not convey semantic meaning about their contents: every message simply has a field called "data". Therefore, while the messages in this package can be useful for quick prototyping, they are NOT intended for "long-term" usage. For ease of documentation and collaboration, we recommend that existing messages be used, or new messages created, that provide meaningful field name(s).

#### Software Architecture
Software architecture description

std_msgs include Bool,Int32MultiArray,Int64,Int64MultiArray,Int8,Int8MultiArray,MultiArrayDimension,MultiArrayLayout,String,Time,UInt16,UInt16MultiArray,
UInt32,UInt32MultiArray,UInt64,UInt64MultiArray,UInt8,UInt8MultiArray Type

input:
```
std_msgs/
├── CMakeLists.txt
├── include
│   └── std_msgs
├── msg
│   ├── Bool.msg
│   ├── Byte.msg
│   ├── ByteMultiArray.msg
│   ├── Char.msg
│   ├── ColorRGBA.msg
│   ├── Duration.msg
│   ├── Empty.msg
│   ├── Float32.msg
│   ├── Float32MultiArray.msg
│   ├── Float64.msg
│   ├── Float64MultiArray.msg
│   ├── Header.msg
│   ├── Int16.msg
│   ├── Int16MultiArray.msg
│   ├── Int32.msg
│   ├── Int32MultiArray.msg
│   ├── Int64.msg
│   ├── Int64MultiArray.msg
│   ├── Int8.msg
│   ├── Int8MultiArray.msg
│   ├── MultiArrayDimension.msg
│   ├── MultiArrayLayout.msg
│   ├── String.msg
│   ├── Time.msg
│   ├── UInt16.msg
│   ├── UInt16MultiArray.msg
│   ├── UInt32.msg
│   ├── UInt32MultiArray.msg
│   ├── UInt64.msg
│   ├── UInt64MultiArray.msg
│   ├── UInt8.msg
│   └── UInt8MultiArray.msg
└── package.xml

```

#### Installation

1.  Download RPM

aarch64:

wget https://117.78.1.88/build/home:davidhan:branches:openEuler:22.03:LTS/standard_aarch64/aarch64/ros-noetic-ros-std_msgs/ros-noetic-ros-std_msgs-0.5.13-1.oe2203.aarch64.rpm

x86_64:

wget https://117.78.1.88/build/home:davidhan:branches:openEuler:22.03:LTS/standard_x86_64/x86_64/ros-noetic-ros-std_msgs/ros-noetic-ros-std_msgs-0.5.13-1.oe2203.x86_64.rpm

2.  Install RPM

aarch64:

sudo rpm -ivh ros-noetic-ros-std_msgs-0.5.13-1.oe2203.aarch64.rpm --nodeps --force

x86_64:

sudo rpm -ivh ros-noetic-ros-std_msgs-0.5.13-1.oe2203.x86_64.rpm --nodeps --force

#### Instructions

Dependence installation

sh /opt/ros/noetic/install_dependence.sh

Exit the following output file under the /opt/ros/noetic/ directory , Prove that the software installation is successful

```
std_msgs/
├── cmake.lock
├── env.sh
├── include
│   └── std_msgs
│       ├── Bool.h
│       ├── Byte.h
│       ├── ByteMultiArray.h
│       ├── Char.h
│       ├── ColorRGBA.h
│       ├── Duration.h
│       ├── Empty.h
│       ├── Float32.h
│       ├── Float32MultiArray.h
│       ├── Float64.h
│       ├── Float64MultiArray.h
│       ├── Header.h
│       ├── Int16.h
│       ├── Int16MultiArray.h
│       ├── Int32.h
│       ├── Int32MultiArray.h
│       ├── Int64.h
│       ├── Int64MultiArray.h
│       ├── Int8.h
│       ├── Int8MultiArray.h
│       ├── MultiArrayDimension.h
│       ├── MultiArrayLayout.h
│       ├── String.h
│       ├── Time.h
│       ├── UInt16.h
│       ├── UInt16MultiArray.h
│       ├── UInt32.h
│       ├── UInt32MultiArray.h
│       ├── UInt64.h
│       ├── UInt64MultiArray.h
│       ├── UInt8.h
│       └── UInt8MultiArray.h
├── lib
│   ├── pkgconfig
│   │   └── std_msgs.pc
│   └── python2.7
│       └── dist-packages
├── local_setup.bash
├── local_setup.sh
├── local_setup.zsh
├── setup.bash
├── setup.sh
├── _setup_util.py
├── setup.zsh
└── share
    ├── common-lisp
    │   └── ros
    ├── gennodejs
    │   └── ros
    ├── roseus
    │   └── ros
    └── std_msgs
        └── cmake

```

#### Contribution

1.  Fork the repository
2.  Create Feat_xxx branch
3.  Commit your code
4.  Create Pull Request

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