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clover/docs/en/autolaunch.md
2020-05-07 19:43:25 +03:00

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Software autorun
===
> **Note** In the image version **0.20** `clever` package and service was renamed to `clover`. See [previous version of the article](https://github.com/CopterExpress/clover/blob/v0.19/docs/en/autolaunch.md) for older images.
systemd
---
Main documentation: [https://wiki.archlinux.org/index.php/Systemd_(Russian)](https://wiki.archlinux.org/index.php/Systemd_(Russian)).
All automatically started Clover software is launched as a `clover.service` systemd service.
The service may be restarted by the `systemctl` command:
```(bash)
sudo systemctl restart clover
```
Text output of the software can be viewed using the `journalctl` command:
```(bash)
journalctl -u clover
```
To run Clover software directly in the current console session, you can use the `roslaunch` command:
```(bash)
sudo systemctl restart clover
roslaunch clover clover.launch
```
You can disable Clover software autolaunch using the `disable` command:
```(bash)
sudo systemctl disable clover
```
roslaunch
---
Main documentation: http://wiki.ros.org/roslaunch.
The list of nodes / programs declared for running is specified in file `/home/pi/catkin_ws/src/clover/clover/launch/clover.launch`.
You can add your own node to the list of automatically launched ones. To do this, place your executable file (e.g. `my_program.py`) into folder `/home/pi/catkin_ws/src/clover/clover/src`. Then add the start of your node to `clover.launch`, for example:
```xml
<node name="my_program" pkg="clover" type="my_program.py" output="screen"/>
```
The started file must have *permission* to run:
```(bash)
chmod +x my_program.py
```
When scripting languages are used, [shebang] should be placed at the beginning of the file (https://ru.wikipedia.org/wiki/Shebang_(Unix)), for example:
```(bash)
#!/usr/bin/env python
```