Difference between revisions of "Main Page"
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* to update the information about the [[install state|state of the home]] (lights, music, …) | * to update the information about the [[install state|state of the home]] (lights, music, …) | ||
* to [[install actions|launch scripts]] at given times or on specific events | * to [[install actions|launch scripts]] at given times or on specific events | ||
| + | |||
| + | A connection to [https://signal.org/ signal] allows [[install Signal|remote controls via messages]]. | ||
TBD - The location of the personal mobile phone can be used to trigger actions, such as opening the garage door. | TBD - The location of the personal mobile phone can be used to trigger actions, such as opening the garage door. | ||
| Line 87: | Line 89: | ||
Stop a service on a given device: | Stop a service on a given device: | ||
su | su | ||
| − | ll / | + | ll /lib/systemd/system/xpl-* |
| − | + | systemctl list-units --type=service --state=running | grep xpl | |
SERVICE='xpl-central' | SERVICE='xpl-central' | ||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| + | SERVICE_DEFINITION="/lib/systemd/system/$SERVICE" | ||
| + | reset | ||
| + | echo -e "\n$SERVICE_DEFINITION.service\n" | ||
| + | echo ; cat $SERVICE_DEFINITION.service ; echo | ||
| + | systemctl stop $SERVICE | ||
| + | systemctl disable $SERVICE | ||
| + | |||
| + | SERVICE_SCRIPT="/home/control/Documents/Controls/$SERVICE.pl" | ||
| + | reset | ||
| + | echo -e "\n$SERVICE_SCRIPT\n" | ||
| + | echo ; cat $SERVICE_SCRIPT ; echo | ||
| + | |||
| + | reboot | ||
| + | |||
| + | Start it on the other machine: | ||
su | su | ||
SERVICE='xpl-central' | SERVICE='xpl-central' | ||
| − | + | ||
| − | + | SERVICE_DEFINITION="/lib/systemd/system/$SERVICE" | |
| − | + | ed $SERVICE_DEFINITION.service | |
| + | |||
| + | SERVICE_SCRIPT="/home/control/Documents/Controls/$SERVICE.pl" | ||
| + | ed $SERVICE_SCRIPT | ||
| + | |||
| + | chmod 775 $SERVICE_SCRIPT | ||
| + | chown control:users $SERVICE_SCRIPT | ||
| + | systemctl enable $SERVICE | ||
| + | systemctl status $SERVICE | ||
= Contact = | = Contact = | ||
Latest revision as of 07:13, 2 September 2022
The xPL protocol allows different devices to exchange information in a simple manner. The devices broadcast their messages to the others and register to a hub in order to receive the messages sent by others.
The protocol is light enough to run on simple machines such as the BeagleBone or the Raspberry Pi. Some setup insructions show how to prepare a BeagleBone or a Raspberry Pi to use with xPL. A comparison of different single-board computers gives an idea of speed and power consumption issues.
The hub and the devices can be installed on different platforms. The system shown here run with Perl, which is part of the Linux and Mac OS operating systems and can easily be installed on Windows. It is based on John Bent's xPL ToolKit for Perl.
Contents
Install xPL
Hub
The first step to xPL automation is to install a hub.
This has to be done on each machine that participates to the xPL network.
Serial port
Many devices are controlled over an RS-232 serial port.
For this, the xPL serial port device can be instantiated as many times as needed. The xPL infrastructure supports this by the fact that these devices are differentiated by their name.
Audio alerts
In the same way as your PC, your home wants to alert you from time to time.
For this, the xPL alert device can emit alert sounds. This can fro example be triggered by other xPL messages.
Controlled equipment
The xPL scripts found here allow to control:
- EIB / KNX devices such as lights, shutters, …
- myStrom devices such as buttons, lights, …
- Ethernet controlled switches
- a Logitech Media Server controller
- Philips Hue LED light bulbs control and a time display using 2 bulbs: one for the hour and one for the minute
- a Denon audio-video controller
- a Sony Bravia Android TV or a Panasonic plasma screen
Additionally, a picture display service on high-resolution monitors and screens hosted on a Raspberry Pi can turn the living room into a little museum.
Triggered actions
An xPL device sends clock ticks every minute. A xPL dawnDusk device sends messages at dawn and at dusk.
TBD - A Raspberry Pi based device sends meteorologic information every minute.
A central xPL device monitors all the messages and is configured to trigger specific actions on specific messages. This allows:
- to update the information about the state of the home (lights, music, …)
- to launch scripts at given times or on specific events
A connection to signal allows remote controls via messages.
TBD - The location of the personal mobile phone can be used to trigger actions, such as opening the garage door. A distance calculator sends xPL messages on any receipt of a NMEA position message.
RESTful web service
A RESTful web service allows to query and modify the state of the home using HTTP methods.
It works in conjunction with the home state xPL device.
Browser control
An HTML web page can also be used to control the home.
It works in conjunction with a CGI script capable of sending xPL messages. This implies to install a web server on a machine in the same local domain as the xPL system.
Obviously, the home control pages have to be tailored to the user's wishes. These pages, in turn, can be generated by a CGI script, based on an XML description of the buttons and their associated commands.
Moving xPL services
Movng services require to stop them on a given device and starting them on another.
Stop a service on a given device:
su ll /lib/systemd/system/xpl-* systemctl list-units --type=service --state=running | grep xpl SERVICE='xpl-central' SERVICE_DEFINITION="/lib/systemd/system/$SERVICE" reset echo -e "\n$SERVICE_DEFINITION.service\n" echo ; cat $SERVICE_DEFINITION.service ; echo systemctl stop $SERVICE systemctl disable $SERVICE SERVICE_SCRIPT="/home/control/Documents/Controls/$SERVICE.pl" reset echo -e "\n$SERVICE_SCRIPT\n" echo ; cat $SERVICE_SCRIPT ; echo reboot
Start it on the other machine:
su SERVICE='xpl-central' SERVICE_DEFINITION="/lib/systemd/system/$SERVICE" ed $SERVICE_DEFINITION.service SERVICE_SCRIPT="/home/control/Documents/Controls/$SERVICE.pl" ed $SERVICE_SCRIPT chmod 775 $SERVICE_SCRIPT chown control:users $SERVICE_SCRIPT systemctl enable $SERVICE systemctl status $SERVICE
Contact
My name is Francois Corthay. I teach digital electronics in an engineering school in Switzerland. If you have problems installing xPL, you can contact me at my_first_name.my_surname@dspc.ch.
