owfs Development Site

• 1: OWFS 1-Wire File System
  • 1.1: What is 1-wire?
  • 1.2: Master and slaves
  • 1.3: Divide and conqueror
  • 1.4: owserver
  • 1.5: What is "uncached"?
  • 1.6: Temperature measurements
  • 1.7: Survey
• 2: Software
  • 2.1: man pages: Programs
    • 2.1.1: Programs
      • 2.1.1.1: configuration file
      • 2.1.1.2: owshell
      • 2.1.1.3: owserver
      • 2.1.1.4: owftpd
      • 2.1.1.5: owhttpd
      • 2.1.1.6: owfs
      • 2.1.1.7: owtap
      • 2.1.1.8: owmon
  • 2.2: Language modules
    • 2.2.3: Full - libow
      • 2.2.3.1: owcapi
      • 2.2.3.2: owperl
      • 2.2.3.3: owtcl
      • 2.2.3.4: owphp
    • 2.2.4: Light - OWNet
      • 2.2.4.1: OWNet.vb
      • 2.2.4.2: OWNet.py
      • 2.2.4.3: OWNet.pm
      • 2.2.4.4: OWNet.php
      • 2.2.4.5: ownet
  • 2.3: man pages: DS18xx
    • 2.3.1: DS18S20
    • 2.3.2: DS18B20
    • 2.3.3: DS1821
    • 2.3.4: DS1822
    • 2.3.5: DS1825
  • 2.4: man pages: DS19xx
    • 2.4.1: DS1904
    • 2.4.2: DS1920
    • 2.4.3: DS1921
    • 2.4.4: DS1963L
    • 2.4.5: DS1963S
    • 2.4.6: DS1977
    • 2.4.7: DS1982
    • 2.4.8: DS1985
    • 2.4.9: DS1986
    • 2.4.10: DS1990A
    • 2.4.11: DS1991
    • 2.4.12: DS1992
    • 2.4.13: DS1993
    • 2.4.14: DS1994
    • 2.4.15: DS1995
    • 2.4.17: DS1996
  • 2.5: man pages: DS24xx
    • 2.5.1: DS2401
    • 2.5.2: DS2404
    • 2.5.3: DS2405
    • 2.5.4: DS2406
    • 2.5.5: DS2408
    • 2.5.6: DS2409
    • 2.5.7: DS2413
    • 2.5.8: DS2415
    • 2.5.9: DS2417
    • 2.5.10: DS2423
    • 2.5.11: DS2430A
    • 2.5.12: DS2431
    • 2.5.13: DS2433
    • 2.5.14: DS2436
    • 2.5.15: DS2437
    • 2.5.16: DS2438
    • 2.5.17: DS2450
  • 2.6: man pages: DS25xx
    • 2.6.1: DS2502
    • 2.6.2: DS2505
    • 2.6.3: DS2506
  • 2.7: man pages: DS27xx
    • 2.7.1: DS2720
    • 2.7.2: DS2740
    • 2.7.3: DS2751
    • 2.7.4: DS2755
    • 2.7.5: DS2760
    • 2.7.6: DS2770
    • 2.7.7: DS2780
    • 2.7.8: DS2781
    • 2.7.12: DS2788
  • 2.8: man pages: Misc devices
    • 2.8.1: DS1427
    • 2.8.2: DS2890
    • 2.8.3: DS28E04
    • 2.8.4: DS28EA00
    • 2.8.5: DS28EC20
    • 2.8.6: LCD
    • 2.8.7: EEEF
  • 2.9: OWTAP
    • 2.9.1: Main window
    • 2.9.2: Detail windows
    • 2.9.3: More details
    • 2.9.4: Message statistics
    • 2.9.5: Persistence windows
    • 2.9.6: Clients window
    • 2.9.7: Status window
  • 2.10: OWMON
    • 2.10.1: OWMON main window
    • 2.10.2: OWMON bus list
  • 2.11: Other software
    • 2.11.1: Weather -- OWFSWS
    • 2.11.2: FLI4L
• 3: Hardware
  • 3.1: Bus masters
    • 3.1.1: usb DS9490R
    • 3.1.2: usb ECLO
    • 3.1.3: usb MP00200
    • 3.1.4: i2c DS2482-100
      • 3.1.4.1: i2c parallel port design
      • 3.1.4.2: Advanced i2c
    • 3.1.5: i2c DS2482-800
    • 3.1.6: com DS9097 (passive)
    • 3.1.7: Fake adapter
    • 3.1.8: Tester adapter
    • 3.1.9: EtherWeather
    • 3.1.10: HA7Net
      • 3.1.10.1: address discovery
    • 3.1.11: HA7E
    • 3.1.12: LinkUSB
    • 3.1.13: LinkHub-E
    • 3.1.14: TAI603B
    • 3.1.15: OMAP
    • 3.1.16: W1 kernel driver
  • 3.2: Standard devices
    • 3.2.1: Family Code lookup
  • 3.3: 3rd party devices
    • 3.3.1: LCD
    • 3.3.2: Thermocouples
      • 3.3.2.1: Type B
      • 3.3.2.2: Type E
      • 3.3.2.3: Type J
      • 3.3.2.4: Type K
      • 3.3.2.5: Type N
      • 3.3.2.6: Type R
      • 3.3.2.7: Type S
      • 3.3.2.8: Type T
    • 3.3.3: Locator
    • 3.3.4: Light sensor
    • 3.3.5: Weather Station
    • 3.3.6: Humidity
      • 3.3.6.1: Temperature compensation
    • 3.3.7: Voltage
    • 3.3.8: Barometer
    • 3.3.9: UVI
    • 3.3.10: Moisture
    • 3.3.11: CO2 sensor
    • 3.3.12: BAE0910
    • 3.3.13: 8 Channel I/O
  • 3.4: Appliances
    • 3.4.1: NSLU2
    • 3.4.2: Wireless router
    • 3.4.3: OMAP
    • 3.4.4: WL-HDD
    • 3.4.5: FOX board
    • 3.4.6: Foxboard G20
  • 3.5: Hubs
  • 3.6: Voltage table
  • 3.7: Switches
  • 3.8: Wiring standards
• 4: Examples
  • 4.1: Published articles...
    • 4.1.1: Linux Magazin by Michael Schilli (owperl) [German]
    • 4.1.2: Pyzine by Peter Kropf (owpython)
    • 4.1.3: Hack-A-Day
  • 4.2: Hardware and designs
    • 4.2.1: DS1821 Thermostat Circuit -- Doug Collinge
    • 4.2.2: Custom hardware -- William Robison
    • 4.2.3: Ideas and Prototypes -- Gregg Levine
    • 4.2.4: ASUS wireless -- Wim Heirman
    • 4.2.5: Fan and battery control -- Majek Wodzinski
  • 4.3: Home and Office
    • 4.3.1: Monitor a wine cellar
    • 4.3.3: Office monitoring -- Wim Heirman
    • 4.3.4: Solar Heating Control -- Christian Schumann and Christian Magnusson
    • 4.3.5: Home monitoring -- Paul Rimmer
    • 4.3.6: Automatizujeme domácnost I
  • 4.4: Aquarium
    • 4.4.1: Aquarium automation -- Rob Conway
    • 4.4.2: Reef Tank -- Scott Jilek
  • 4.5: Mobile
    • 4.5.3: Home Trailer -- Brian Fahrlander
  • 4.6: Industrial
    • 4.6.1: Hydroelectric plant
  • 4.7: Garden
• 5: Setup
  • 5.1: Install
    • 5.1.1: Download
    • 5.1.2: Configuration
    • 5.1.3: NSLU2 (German)
      • 5.1.3.1: Initial NSLU2 preparation
      • 5.1.3.2: OWFS install step
  • 5.2: Distributions
    • 5.2.1: Debian
    • 5.2.2: Ubuntu
    • 5.2.3: Slackware
    • 5.2.4: Gentoo
      • 5.2.4.1: Gentoo Scripts
  • 5.3: Bonjour (zeroconf)
    • 5.3.1: Bonjour library
    • 5.3.2: Avahi discovery
    • 5.3.3: FTP browsing
  • 5.4: MS Windows
    • 5.4.1: Windows USB
  • 5.5: Permissions
    • 5.5.1: Hotplug
    • 5.5.2: udev
      • 5.5.2.1: UDEV and USB
    • 5.5.3: Fuse
  • 5.6: Database linkage
    • 5.6.1: Postgres and Python by Jerry Scharf
  • 5.7: Testing without hardware
  • 5.8: Aliases
  • 5.9: Macintosh
• 6: Display
  • 6.1: Javascript: Raphael.js
• 7: Advanced
  • 7.1: Cache
    • 7.1.1: Cache objects
    • 7.1.2: Cache flip
    • 7.1.3: Remote cache
    • 7.1.4: Cache Structure
  • 7.2: Error management
  • 7.3: owserver protocol
    • 7.3.1: Loop suppression
    • 7.3.2: tcp messages
    • 7.3.3: owserver flag word
    • 7.3.4: owserver message types
    • 7.3.5: Persistent connections
    • 7.3.6: owlib client persistence
    • 7.3.7: Directory Messages
  • 7.4: Binary sizes
  • 7.5: Porting
  • 7.6: Performance
  • 7.7: To Do
  • 7.8: Read and Write object
    • 7.8.1: struct owq_wire_query assumptions
    • 7.8.2: Object write process
    • 7.8.3: Object read process
  • 7.9: Directory locking
  • 7.10: slave support
    • 7.10.1: Slave code
  • 7.11: SNMP
• 8: Help
  • 8.1: OWFS websites
  • 8.2: Source Availability and Information
    • 8.2.1: Browse source code
    • 8.2.2: StatCVS
  • 8.3: Search
  • 8.4: License
  • 8.5: Tutorial links
  • 8.6: Internal help
    • 8.6.1: Internal help=device
    • 8.6.2: Internal help=program
    • 8.6.3: Internal help=cache
    • 8.6.4: Internal help=job
    • 8.6.5: Internal help=temperature
  • 8.7: Maintainers
  • 8.8: Logo poll
  • 8.9: Quirks and Problems
    • 8.9.1: locks and unlocks
  • 8.10: FAQ
    • 8.10.1: What is 1-wire good for?

OWFS 1-Wire File System

OWFS is an easy way to use the powerful 1-wire system of Dallas/Maxim.

OWFS is a simple and flexible program to monitor and control the physical environment. You can write scripts to read temperature, flash lights, write to an LCD, log and graph, ...

1-Wire	Files:
Inexpensive devices, simple wiring, parasitic power Unique addresses, individually addressable USB, serial and i2c adapters Mature technology, consulting and aftermarket support iButton steel sealed devices New fancy 3rd-party designs	Temperature, thermocouples Humidity, LCD, pressure, counters Memory, encryption Voltage, current, logic Switches Weather (wind, humidity, UV, temperature).
OWFS
Filesystem access ( i.e. 10.001122334/temperature ) (owfs) Web access (owhttpd) Remote network access (owserver) Direct language support for perl, python, php, tcl, Java, C (libow, ownet)	Embedded appliances: Linksys router, NSLU2, FOX Bootable CD Supported on i386, MIPS, ARM, Coldfire, Linux, OSX, Windows (Cygwin), FreeBSD FREE, under the GPLv2 license
Uses
FUN, hobby projects, neat hacks Home automation Environmental monitoringl Security	Process control Server rooms HVAC Weather station