powersync-plugins/onewire

One-Wire

This integration plugin allows to integrate one-wire devices like temperature sensors and switches.

Supported Things

• OWFS Interface
  • Gateway device
  • Initializes OWFS
• Temperature Sensors
  • Family Code 10
    • DS18S20
    • DS1820
    • DS18S20-PAR
    • DS1920
  • Family Code 22
    • DS1822
    • DS1822-PAR
  • Family Code 28
    • DS18B20
    • DS18B20-PAR
    • DS18B20X
  • Family Code 3B
    • DS1825
• Switches
  • Family Code 05
    • Single channel switch
    • DS2405
  • Family Code 12
    • Dual channel switch
    • DS2406
    • DS2407
  • Family Code 3A
    • Dual channel switch
    • DS2413
  • Family Code 29
    • Eight channel switch
    • DS2408

Usage

OWFS Interface

First step is to setup the "One wire interface". During the device setup it is required to enter the OWFS init arguments. Default arguments are "--i2c=ALL:ALL", means OWFS is about to scan for one-wire bus masters on all I2C interfaces.

You can simulate one-wire device with following init argument: "--fake=10,22,28,05"

More about init arguments here: https://www.owfs.org

The "One wire interface" thing has the toggle button to "Auto add one wire devices". Is this activated one-wire devices that get connected to the bus will appear in nymea automatically.

NOTE: As long as the "Auto add one wire devices" feature is activated you won't be able to manually discover devices.

W1 Kernel Driver

Install the kernel driver w1. Raspberry Pi users can use rasp-config to enable 'one wire' which enables W1. There are not further steps necessary, temperature sensors will be discovered if the driver has been loaded successfully.

Requirements

• The package “nymea-plugin-onewire” must be installed.

More

This plug-in uses "OWFS" the one-wire file system: https://owfs.org