Provided by: ow-shell_3.2p3+dfsg1-2_amd64 bug

NAME

       owdir, owread, owwrite, owget, owexist, owpresent - lightweight owserver access

SYNOPSIS

   Minimal options
       owdir -s [host:]port [directory]
       owread -s [host:]port filepath
       owwrite -s [host:]port filepath value
       owget -s [host:]port [directory] | filepath

   Server discovery
       owdir --autoserver [directory]
       owread --autoserver filepath
       owwrite --autoserver filepath value
       owget --autoserver [directory] | filepath

   Full options
       owdir  -q  --quiet  -f  --format  f[.]i[[.]c]  ]  [  --dir  ]  -s  [host:]port [directory]
       [directory2 ...]

       owread -q --quiet -C --celsius -K --kelvin -F  --fahrenheit  -R  --rankine  [  --hex  ]  [
       --start= offset ] [ --size= bytes ] -s [host:]port filepath [filepath2 ...]

       owwrite  -q  --quiet  -C  --celsius  -K  --kelvin -F --fahrenheit -R --rankine [ --hex ] [
       --start= offset ] -s [host:]port filepath value [filepath2 value2 ...]

       owget -q --quiet -f --format f[.]i[[.]c] -C  --celsius  -K  --kelvin  -F  --fahrenheit  -R
       --rankine  [  --hex  ]  [  --start=  offset  ]  [ --size= bytes ] [ --dir ] -s [host:]port
       [directory] | filepath

   Version
       owdir -V --version
       owread -V --version
       owwrite -V --version
       owget -V --version

   Help
       owdir -h | --help
       owread -h | --help
       owwrite -h | --help
       owget -h | --help

DESCRIPTION

   1-Wire
       1-wire is a wiring protocol and series of devices  designed  and  manufactured  by  Dallas
       Semiconductor,  Inc.  The bus is a low-power low-speed low-connector scheme where the data
       line can also provide power.

       Each device is uniquely and unalterably numbered during  manufacture.  There  are  a  wide
       variety  of  devices,  including memory, sensors (humidity, temperature, voltage, contact,
       current), switches, timers and data  loggers.  More  complex  devices  (like  thermocouple
       sensors)  can  be  built with these basic devices. There are also 1-wire devices that have
       encryption included.

       The 1-wire scheme uses a single bus master and multiple slaves on the same wire.  The  bus
       master  initiates  all  communication.  The  slaves  can  be  individually  discovered and
       addressed using their unique ID.

       Bus masters come in a variety of configurations including serial, parallel,  i2c,  network
       or USB adapters.

   OWFS design
       OWFS  is  a  suite of programs that designed to make the 1-wire bus and its devices easily
       accessible. The underlying principle is to create a virtual filesystem, with the unique ID
       being the directory, and the individual properties of the device are represented as simple
       files that can be read and written.

       Details of the individual slave or master design are hidden behind a consistent interface.
       The  goal  is to provide an easy set of tools for a software designer to create monitoring
       or control applications. There are some performance enhancements  in  the  implementation,
       including  data  caching,  parallel  access  to  bus  masters,  and  aggregation of device
       communication.  Still  the  fundamental  goal  has  been  ease  of  use,  flexibility  and
       correctness rather than speed.

   OWSHELL programs
       owdir  owread  owwrite  and owget are collectively called the owshell programs. They allow
       lightweight access to an owserver (1) for use in command line scripts.

       Unlike owserver (1) owhttpd (1) owftpd (1) owhttpd (1) there is not persistent  connection
       with the 1-wire bus, no caching and no multithreading. Instead, each program connects to a
       running owserver (1) and performs a quick set of queries.

       owserver (1) performs the actual 1-wire connection (to  physical  1-wire  buses  or  other
       owserver programs), performs concurrency locking, caching, and error collection.

       owshell  programs are intended for use in command line scripts. An alternative approach is
       to mount an owfs (1) filesystem and perform direct file lists, reads and writes.

   owdir
       owdir performs a directory listing. With no argument, all the devices on the  main  1-wire
       bus  will  be  listed. Given the name of a 1-wire device, the available properties will be
       listed. It is the equivalent of

              ls directory

       in the owfs (1) filesystem.

   owread
       owread obtains for value of a 1-wire  device  property.  e.g.  28.0080BE21AA00/temperature
       gives the DS18B20 temperature. It is the equivalent of

              cat filepath

       in the owfs (1) filesystem.

   owwrite
       owwrite  performs  a  change of a property, changing a 1-wire device setting or writing to
       memory. It is the equivalent of

              echo value > filepath

       in the owfs (1) filesystem.

   owget
       owget (1) is a convenience program, combining the function of owdir (1) and owread (1)  by
       first trying to read the argument as a directory, and if that fails as a 1-wire property.

STANDARD OPTIONS

   --autoserver
       Find  an  owserver  using the Service Discovery protocol. Essentially Apple's Bonjour (aka
       zeroconf). Only the first owserver will be used, and that choice is probably arbitrary.

   -s [host:]port
       Connect via tcp (network) to an owserver process that is connected to  a  physical  1-wire
       bus.  This  allows  multiple  processes to share the same bus. The owserver process can be
       local or remote.

       If the server option is not specified, the default is  the  local  machine  and  the  IANA
       allocated default port of 4304. Thus "-s localhost:4304" is the equivalent.

DATA OPTIONS

--hex

       Hexadecimal  mode.  For  reading  data,  each  byte  of character will be displayed as two
       characrters 0-9ABCDEF. Most useful for reading memory locations. No spaces between data.

       Writing data in hexadecimal mode just means that the data should  be  given  as  one  long
       hexadecimal string.

--start=offset

       Read  or  write memory locations starting at the offset byte rather than the beginning. An
       offset of 0 means the beginning (and is the default).

--size=bytes

       Read up to the specified number of bytes of a memory location.

HELP OPTIONS

   -h --help
       Shows (this) basic summary of options.

   -V --version
       Version of this program.

DISPLAY OPTIONS

   --dir
       Modify the display of directories to  indicate  which  entries  are  also  directories.  A
       directory member will have a trailing '/' if it is a directory itself. This aids recursive
       searches.

   -f --format f[.]i[[.]c]
       Display format for the 1-wire devices. Each device has a 8 byte address, consisting of:

       f      family code, 1 byte

       i      ID number, 6 bytes

       c      CRC checksum, 1 byte

       Possible formats are f.i (default, 01.A1B2C3D4E5F6), fi fic f.ic f.i.c and fi.c

       All formats are accepted as input, but the output will be in the specified format.

EXAMPLE

       owdir -s 3000 --format fic
              Get the device listing (full 16 hex digits, no dots) from  the  local  owserver  at
              port 3000

       owread -F --autoserver 51.125499A32000/typeK/temperature
              Read  temperature from the DS2751-based thermocouple on an auto-discovered owserver
              Temperature in fahrenheit.

       owwrite -s 10.0.1.2:3001 32.000800AD23110/pages/page.1 "Passed"
              Connect to a OWFS server process ( owserver ) that was started on  another  machine
              at tcp port 3001 and write to the memory of a DS2780

SEE ALSO

   Programs
       owfs  (1)  owhttpd  (1) owftpd (1) owserver (1) owdir (1) owread (1) owwrite (1) owpresent
       (1) owtap (1)

   Configuration and testing
       owfs (5) owtap (1) owmon (1)

   Language bindings
       owtcl (3) owperl (3) owcapi (3)

   Clocks
       DS1427 (3) DS1904(3) DS1994 (3) DS2404 (3) DS2404S (3) DS2415 (3) DS2417 (3)

   ID
       DS2401 (3) DS2411 (3) DS1990A (3)

   Memory
       DS1982 (3) DS1985 (3) DS1986 (3) DS1991 (3) DS1992 (3) DS1993 (3) DS1995  (3)  DS1996  (3)
       DS2430A (3) DS2431 (3) DS2433 (3) DS2502 (3) DS2506 (3) DS28E04 (3) DS28EC20 (3)

   Switches
       DS2405 (3) DS2406 (3) DS2408 (3) DS2409 (3) DS2413 (3) DS28EA00 (3)

   Temperature
       DS1822  (3) DS1825 (3) DS1820 (3) DS18B20 (3) DS18S20 (3) DS1920 (3) DS1921 (3) DS1821 (3)
       DS28EA00 (3) DS28E04 (3)

   Humidity
       DS1922 (3)

   Voltage
       DS2450 (3)

   Resistance
       DS2890 (3)

   Multifunction (current, voltage, temperature)
       DS2436 (3) DS2437 (3) DS2438 (3) DS2751 (3) DS2755 (3) DS2756 (3) DS2760  (3)  DS2770  (3)
       DS2780 (3) DS2781 (3) DS2788 (3) DS2784 (3)

   Counter
       DS2423 (3)

   LCD Screen
       LCD (3) DS2408 (3)

   Crypto
       DS1977 (3)

   Pressure
       DS2406 (3) -- TAI8570

AVAILABILITY

       http://www.owfs.org

AUTHOR

       Paul Alfille (paul.alfille@gmail.com)