clach04 / x10_rest

REST interface to control X10 devices

x10_rest

REST interface to control X10 devices for Home Automation.

Table of Contents

• Information
• Getting Started
• Design notes

Information

Aim of this project is to hook up https://home-assistant.io/components/switch.rest/ to a CM17A, serial Firecracker X10 unit.

Other X10 device controllers could be supported by making calls to Mochad (and/or https://hg.sr.ht/~clach04/mochad_firecracker/) instead.

NOTE by default this accepts all remote connections, without any authentication or authorization checks. It is recommended that this only listen and accept connections from localhost!

Implemented in pure Python. Known to work with:

• Python 2.7
• Python 3.5

Getting Started

To get started:

pip install -r requirements.txt

Permissions under Linux

Under Linux most users do not have serial port permissions, either:

• give user permission (e.g. add to group "dialout") - RECOMMENDED
• run this demo as root - NOT recommended!

Giver user dialout (serial port) access:

# NOTE requires logout/login to take effect
sudo usermod -a -G dialout $USER

Running

Start x10 rest server via:

# CM17A Firecracker
x10_rest.py SERIAL_PORT_NAME

# Mochad server (localhost on default port)
x10_rest.py -m

Example, Windows:

x10_rest.py COM5

Example, Linux:

x10_rest.py /dev/ttyUSB0

Configuration of Home Assistant

Edit configuration.yaml, sample additions:

# https://home-assistant.io/components/switch.rest/
# X10 switches via https://github.com/clach04/x10_rest
switch:
  - platform: rest
    resource: http://localhost:1234/x10/C/6
    name: "C6 Switch"
  - platform: rest
    resource: http://localhost:1234/x10/C/5
    name: "C5 Switch"
  - platform: rest
    resource: http://localhost:1234/x10/C/4
    name: "C4 Switch"
  - platform: rest
    resource: http://localhost:1234/x10/C
    name: "C - all switches"

This will control house code C, units 4, 5, and 6.

• All LAMP units in house C can be switched ON via all switches.
• All units (not just LAMPS) in house C can be switched OFF via all switches.

NOTE CM17A Firecracker devices are controllers only, state can not be read so x10_rest emulates this as best it can. State can easily get out of sync with reality and so two presses may be required via HA.

See gen_sample_config.py for a quick way to generate config suitable for copy/paste and then editing.

Design notes

REST interface

REST interface implemented is completely influenced by https://home-assistant.io/components/switch.rest/ behavior so only ON and OFF is supported.

URL form:

/x10/{house code}/{optional_unit_number}

if {optional_unit_number} is omitted means all units in {house code}.

Examples:

• /x10/A
• /x10/A/1
• /x10/A/2
• /x10/B/1
• ...

Demo

> curl http://localhost:1234/x10/C/4
OFF
> curl --data ON http://localhost:1234/x10/C/4

> curl http://localhost:1234/x10/C/4
ON
> curl --data OFF http://localhost:1234/x10/C/4

Notes

Why another REST interface to x10?

• All the ones at the time this was written did not supply a REST interface that https://home-assistant.io/components/switch.rest/ could use. Either the URL included the ON/OFF state or the REQUEST_METHOD was incompatible (e.g. PUT instead of GET/POST).

What's next?

• Support other X10 interfaces/controllers?
• Remove the need for this and implement X10 support as a Home Assistant Component. See https://github.com/clach04/home-assistant-x10