w1

Python wrapper for 1-wire Linux interface

Prerequisites

w1 library is just simple wrapper for /sys/bus/w1 interface provided by Linux Kernel. To use it you need to load module wire:

# modprobe wire

To have module wire loaded across reboots you may need to add it to system modules configuration, e.g. /etc/modules or similar (depending on Linux distribution).

Usage

from w1 import Manager
from w1 import Family

manager = Manager()
for slave in manager.slaves(family=Family.THERM):
    print(slave.temperature)

Utilities

w1-therm

w1 library comes with handy w1-therm utility which is useful while writing shell scripts.

Show temperature from all thermometers:

km@raspberrypi:~$ w1-therm
28-00000675de87   58.69
28-000006762567   27.56

You can also see just selected thermometer(s):

km@raspberrypi:~$ w1-therm --name 28-000006762567
28-000006762567   27.56

If you want just to see value from one thermometer:

km@raspberrypi:~$ w1-therm --name 28-000006762567 --only-value
27.56

In scripts it may be useful to get just integer:

km@raspberrypi:~$ w1-therm --name 28-000006762567 --only-value --as-integer
28

And of course you can use different units:

km@raspberrypi:~$ w1-therm --name 28-000006762567 --only-value --as-integer --unit celsius
28
km@raspberrypi:~$ w1-therm --name 28-000006762567 --only-value --as-integer --unit kelvin
301
km@raspberrypi:~$ w1-therm --name 28-000006762567 --only-value --as-integer --unit fahrenheit
82