|-d port | --device=port (DS2480B)|
|DS2480B-based bus master (like the DS9097U or the LINK in emulation mode). If the adapter doesnt respond, a passive type (DS9907E or diode/resistor) circuit will be assumed.|
|--serial_flextime | --serial_regulartime (DS2480B)|
|Changes details of bus timing (see DS2480B datasheet). Some devices, like the Swart LCD cannot work with flextime.|
Sets the initial serial port communication speed for all bus masters. Not all serial devices support all speeds. You can change the individual bus master speed for the
DS2880B in the interface/settings directory. The
HA5 speed is set in hardware, so the command line buad rate should match that rate.
Usually the default settings (9600 for LINK and DS2480B ) and 115200 for the HA5 are sane and shouldnt be changed.
|--straight_polarity | --reverse_polarity (DS2480B)|
|Reverse polarity of the DS2480B output transistors? Not needed for the DS9097U, but required for some other designs.|
|iButtonLink LINK adapter (all versions) in non-emulation mode. Uses an ascii protocol over serial.|
|Embedded Data Systems HA7E adapter ( and HA7S ) in native ascii mode.|
|--ha5=port | --ha5=port:a | --ha5=port:acg (HA5)|
|Embedded Data Systems HA5 mutidrop adapter in native ascii mode. Up to 26 adapters can share the same port, each with an assigned letter. If no letter specified, the program will scan for the first response (which may be slow).|
|--checksum | --no_checksum (HA5)|
|Turn on (default) or off the checksum feature of the HA5 communication.|
|--passive=port | --ha2=port | --ha3=port | --ha4b=port (Passive)|
|Passive 1-wire adapters. Powered off the serial port and using passive electrical components (resitors and diodes).|
|--8bit | --6bit (Passive)|
|Synthesize the 1-wire waveforme using a 6-bit (default) serial word, or 8-bit word. Not all UART devices support 6 bit operation.|
|Timeout (in seconds) for all serial communications. 5 second default. Can be altered dynamically under /settings/timeout/serial|
The only supported true USB bus masters are based on the DS2490 chip. The most common is the DS9490R which has an included 1-wire ID slave with family code 81.
There are also bus masters based on the serial chip with a USB to serial conversion built in. These are supported by the serial bus master protocol.
-u | --usb DS2490 based bus master (like the DS9490R). -u2 | --usb=2 Use the second USB bus master. (The order isnt predicatble, however, since the operating system does not conssitently order USB devices). -uall | --usb=ALL Use all the USB devices. --usb_flextime | --usb_regulartime Changes the details of 1-wire waveform timing for certain network configurations. --altusb Willy Robions alternative USB timing. --timeout_usb=5 Timeout for USB communications. This has a 5 second default and can be changed dynamically under /settings/timeout/usb
I2C is 2 wire protocol used for chip-to-chip communication. The bus masters: DS2482-100, DS2482-101 and DS2482-800 can specify (via pin voltages) a subset of addresses on the i2c bus. Those choices are
The DS2482-800 masters 8 1-wire buses and so will generate 8 /bus.n entries.
0,1,2,3 0x18,0x19,0x1A,0x1B 4,5,6,7 0x1C,0x1D,0x1E,0x1F (DS2482-800 only) port for i2c masters have the form /dev/i2c-0, /dev/i2c-1, ... -d port | --device=port This simple form only permits a specific port and the first available i2c_address --i2c=port | --i2c=port:i2c_address | --i2c=port:ALL Specific i2c port and the i2c_address is either the first, specific, or all or them. The i2c_address is 0,1,2,... --i2c | --i2c=: | --i2c=ALL:ALL Search the available i2c buses for either the first, the first, or every i2c adapter.
These bus masters communicate via the tcp/ip network protocol and so can be located anywhere on the network. The network_address is of the form tcp_address:port
E.g. 192.168.0.1:3000 or localhost:3000
--link=network_address LinkHubE network LINK adapter by iButtonLink --ha7net=network_address | --ha7net HA7Net network 1-wire adapter with specified tcp address or discovered by udp multicast. By Embedded Data Systems
--timeout_ha7=60 specific timeout for HA7Net communications (60 second default).
--etherweather=network_address Etherweather adapter -s network_address | --server=network_address Location of an owserver (1) program that talks to the 1-wire bus. The default port is 4304. --timeout_network=5 Timeout for network bus master communications. This has a 1 second default and can be changed dynamically under /settings/timeout/network
Used for testing and development. No actual hardware is needed. Useful for separating the hardware development from the rest of the software design.
devices is a list of comma-separated 1-wire devices in the following formats. Note that a valid CRC8 code is created automatically. 10,05,21 Hexidecimal family codes (the DS18S20, DS2405 and DS1921 in this example). 10.12AB23431211 A more complete hexidecimal unique address. Useful when an actual hardware device should be simulated. DS2408,DS2489 The 1-wire device name. (Full ID cannot be speciifed in this format). --fake=devices Random address and random values for each read. The device ID is also random (unless specified). --temperature_low=12 --temperature_high=44 Specify the temperature limits for the fake adapter simulation. These should be in the same temperature scale that is specified in the command line. It is possible to change the limits dynamically for each adapter under /bus.x/interface/settings/simulated/[temperature_low|temperature_high] --tester=devices Predictable address and predictable values for each read. (See the website for the algorhythm).
This a linux-specific option for using the operating systems access to bus masters. Root access is required and the implementation was still in progress as of owfs v2.7p12 and linux 2.6.30.
Bus masters are recognized and added dynamically. Details of the physical bus master are not accessible, bu they include USB, i2c and a number of GPIO designs on embedded boards.
Access is restrict to superuser due to the netlink broadcast protocol employed by w1. Multitasking must be configured (threads) on the compilation.
--w1 Use the linux kernel w1 virtual bus master. --timeout_w1=10 Timeout for w1 netlink communications. This has a 10 second default and can be changed dynamically under /settings/timeout/w1
Temperature scale used for data output. Celsius is the default.
Can also be changed within the program at /settings/units/temperature_scale
Pressure scale used for data output. Millibar is the default.
Can also be changed within the program at /settings/units/pressure_scale
Choose the representation of the 1-wire unique identifiers. OWFS uses these identifiers as unique directory names.
Although several display formats are selectable, all must be in family-id-crc8 form, unlike some other programs and the labelling on iButtons, which are crc8-id-family form.
Display format for the 1-wire devices. Each device has a 8byte address, consisting of:
Possible formats are f.i (default, 01.A1B2C3D4E5F6), fi fic f.ic f.i.c and fi.c
f family code, 1 byte i ID number, 6 bytes c CRC checksum, 1 byte
All formats are accepted as input, but the output will be in the specified format.
The address elements can be retrieved from a device entry in owfs by the family, id and crc8 properties, and as a whole with address. The reversed id and address can be retrieved as r_id and r_address.
Do we allow writing to the 1-wire bus (writing memory, setting switches, limits, PIOs)? The write option is available for symmetry, its the default.
Places the PID -- process ID of owfs into the specified filename. Useful for startup scripts control.
Whether the program releases the console and runs in the background after evaluating command line options. background is the default.
=0 default mixed destination: stderr foreground / syslog background =1 syslog only =2 stderr only =3 /dev/null (quiet mode).
--error_level=9 produces a lot of output
=0 default errors only =1 connections/disconnections =2 all high level calls =3 data summary for each call =4 details level >4 debugging chaff
Name of an owfs (5) configuration file with more command line parameters
See also this man page and the web site http://www.owfs.org
Shows basic summary of options.
device 1-wire bus master options cache cache and communication size and timing program mountpoint or TCP server settings job control and debugging options temperature Unique ID display format and temperature scale
Version of this program and related libraries.
Timeouts for the bus masters were previously listed in Device options. Timeouts for the cache affect the time that data stays in memory. Default values are shown.
Seconds until a volatile property expires in the cache. Volatile properties are those (like temperature) that change on their own.
Can be changed dynamically at /settings/timeout/volatile
Seconds until a stable property expires in the cache. Stable properties are those that shouldnt change unless explicitly changed. Memory contents for example.
Can be changed dynamically at /settings/timeout/stable
Seconds until a directory listing expires in the cache. Directory lists are the 1-wire devices found on the bus.
Can be changed dynamically at /settings/timeout/directory
Seconds until the presence and bus location of a 1-wire device expires in the cache.
Can be changed dynamically at /settings/timeout/presence
There are also timeouts for specific program responses:
Seconds until the expected response from the owserver (1) is deemed tardy.
Can be changed dynamically at /settings/timeout/server
Seconds that an ftp session is kept alive.
Can be changed dynamically at /settings/timeout/ftp
owhttpd -p 3001 -d /dev/ttyS0 Web server runs on tcp port 3001, serial adapter at ttyS0 owhttpd -p 3001 -s littlehost:4304 --error_level=3 Web server on port 3001, from owserver process on host "littlehost", extensive error messages. owhttpd -p 3001 -u -u2 -r Read-only web server on port 3001, using two usb adapters.
owfs (1) owhttpd (1) owftpd (1) owserver (1) owdir (1) owread (1) owwrite (1) owpresent (1) owtap (1)
owfs (5) owtap (1) owmon (1)
owtcl (3) owperl (3) owcapi (3)
DS1427 (3) DS1904(3) DS1994 (3) DS2404 (3) DS2404S (3) DS2415 (3) DS2417 (3)
DS2401 (3) DS2411 (3) DS1990A (3)
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)
DS2405 (3) DS2406 (3) DS2408 (3) DS2409 (3) DS2413 (3) DS28EA00 (3)
DS1822 (3) DS1825 (3) DS1820 (3) DS18B20 (3) DS18S20 (3) DS1920 (3) DS1921 (3) DS1821 (3) DS28EA00 (3) DS28E04 (3)
DS2436 (3) DS2437 (3) DS2438 (3) DS2751 (3) DS2755 (3) DS2756 (3) DS2760 (3) DS2770 (3) DS2780 (3) DS2781 (3) DS2788 (3) DS2784 (3)
LCD (3) DS2408 (3)
DS2406 (3) -- TAI8570
Paul Alfille (email@example.com)
|OWFS Manpage||OWHTTPD (1)||2004|