Walter vl at 11:01, 30 November 2022

2022-11-30T11:01:29Z

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'''1-Wire''' is a device communications bus system designed by Dallas Semiconductor Corp. that provides low-speed (16.3 kbit/s) data, signaling, and power over a single conductor.

Domoticz supports 1-Wire devices directly connected to the gpio of the Raspberry Pi or Windows system with serial adapter that runs Domoticz.

=Setup=

==Windows==

First Stop Domoticz

Download and install [http://sourceforge.net/projects/domoticz/files/ the OneWireDomoticzServiceInstaller.msi from here]

With a serial adapter, update the OneWireDomoticzServiceConfig.xml in the OneWireDomoticzService installation directory (usually C:\Program Files (x86)\Domoticz\OneWireDomoticzService), with this content (update adapter name and COM port with your values), and restart the service : 

<OneWireDomoticzServiceConfig>
<adapter name="{DS9097U_DS948X}" port="COM1"/>
</OneWireDomoticzServiceConfig>

Supported adapter names are : {DS9097E}, {DS9097U_DS948X}, {DS9490}, NetAdapter

USB DS9490 adapter should be auto discovered, it doesn't need the OneWireDomoticzServiceConfig.xml file.

Restart Domoticz

==Linux==
There are two methods to use 1-Wire devices 

===w1-gpio/w1-therm===

Follow this guide to connect and install 1-Wire support 
[http://www.raspberrypi-spy.co.uk/2013/03/raspberry-pi-1-wire-digital-thermometer-sensor/ How to Setup 1-Wire] 
 
When the above is working, do not forget to include the two modules in /etc/modules, otherwise after the next reboot it is not working anymore. 
sudo vi /etc/modules 
 
Add the following two modules (on separate lines): 
w1-gpio 
w1-therm 
Restart domoticz, and 1-wire support should now be detected, and you are able to add a new hardware device (1-Wire)

 
'''Note: When using GPIO, set OWFS Path to nothing. After adding 1-wire (system) the sensors will eventually show up in the log.''' 

===OWFS===
Follow this guide to connect and install OWFS - 1-Wire support 
[http://wiki.m.nu/index.php/OWFS_with_i2c_support_on_Raspberry_Pi_(English_version) How to Setup OWFS] 

Make sure everything works as it should by checking the contents of the 1wire folder or by reading a sensor: (Change path according to your sensor id)
cat /mnt/1wire/10.F6877C010800/temperature
 
Restart domoticz, and 1-wire support should now be detected, and you are able to add a new hardware device (1-Wire) 
 
Note: to be detected by Domoticz, the 1-wire filesystem must be mounted as /mnt/1wire 

===Disable 1-wire===
Add this line to crontab (sudo crontab -e): 
@reboot sudo rmmod w1_gpio 

==Add 1-Wire Hardware Gateway==
After 1-wire system is working on your system you can add id to Domoticz:

Go to menu <code>Setup -> Hardware</code>

Select type: <code>1-Wire (system)</code>

Enter a Name eg: <code>1-Wire</code>

OWFS Path: Enter path starting with <code>/mnt/1wire</code> Leave empty when using w1-gpio/w1-therm method!!

Modify Sensor and switch Poll Periods to your need.

Click on Add to add the Hardware. Domoticz will create the connected 1-Wire devices.

They will show up in the [[Setup Devices|devices list]] (menu <code>Setup -> Devices</code>) and need to be activated in domoticz (click on green arrow) to be shown in the devices tabs (switches, temperature etc).

[[File:1wire.png]]

[[Category:Domoticz]]
[[Category:Manual]]
[[Category:Setup]]
[[Category:Hardware]]

1Wire - Revision history

Walter vl at 11:01, 30 November 2022