Python implementation of 1-Wire protocol
Project description
Python implementation of 1-Wire protocol.
Originally written to replace digitemp utility in my pet project and get direct access to 1-wire devices. It was created for reading DS1820 temperature sensor connected to RS232 serial port through DS9097 adapter.
Documentation used
Supported Hardware
Master
DS9097 - COM port adapter which performs RS-232C level conversion.
Custom 1-wire serial port interface (see below).
Slave
DS1820 / DS18S20 / DS1920 - High-Precision Temperature Sensor.
DS18B20 - Programmable Resolution Temperature Sensor.
DS1822 - Econo Temperature Sensor.
Usage
Find ROM codes for all connected devices:
from digitemp.master import UART_Adapter from digitemp.device import AddressableDevice print(AddressableDevice(UART_Adapter('/dev/ttyS0')).get_connected_ROMs()) # ['108739A80208006F', '10A75CA80208001A']
Get temperature:
from digitemp.master import UART_Adapter from digitemp.device import DS1820 bus = UART_Adapter('/dev/ttyS0') # DS9097 connected to COM1 # only one 1-wire device on the bus: sensor = DS1820(bus) # specify device's ROM code if more than one 1-wire device on the bus: sensor = DS1820(bus, rom='10D67E5B02080037') # display sensor's information sensor.info() # get temperature print(sensor.get_temperature()) # 25.48
1-wire serial port interface
See Serial Port Temperature Sensors - Hardware Interface for details.
License
Python license. In short, you can use this product in commercial and non-commercial applications, modify it, redistribute it. A notification to the author when you use and/or modify it is welcome.
See the LICENSE file for the actual text of the license.
Project details
Release history Release notifications | RSS feed
Download files
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.