| EDS00xx(3) | One-Wire File System | EDS00xx(3) |
EDS - Embedded Data Systems Sensors
Embedded Data Systems microprocessor-based sensors
7E [.]XXXXXXXXXXXX[XX][/[ device_id | device_type | tag ]]
7E [.]XXXXXXXXXXXX[XX][/[ memory | pages/page.[0-2|ALL] ]]
7E [.]XXXXXXXXXXXX[XX][/[ address | crc8 | id | locator | r_address | r_id | r_locator | type ]]
7E.XXXXXXXXXXXX/EDS006X [/[ temperature | counters/seconds | alarm/temp_[hi|low] | alarm/clear | set_alarm/temp_[hi|low] | threshold/temp_[hi|low] ]]
7E.XXXXXXXXXXXX/EDS006X [/[ humidity |
humidex | dew_point | heat_index |
alarm/humidity_[hi|low] | alarm/humidex_[hi|low] |
alarm/dew_point_[hi|low] | alarm/heat_index_[hi|low] |
alarm/clear | set_alarm/humidity_[hi|low] |
set_alarm/humidex_[hi|low] | set_alarm/dew_point_[hi|low] |
set_alarm/heat_index_[hi|low] | threshold/humidity_[hi|low] |
threshold/humidex_[hi|low] | threshold/dew_point_[hi|low] |
threshold/heat_index_[hi|low] ]]
7E.XXXXXXXXXXXX/EDS006X [/[ pressure | inHg | alarm/pressure_[hi|low] | alarm/inHg_[hi|low] | alarm/clear | set_alarm/pressure_[hi|low] | set_alarm/inHg_[hi|low] | threshold/pressure_[hi|low] | threshold/inHg_[hi|low] ]]
7E.XXXXXXXXXXXX/EDS006X [/[ light | alarm/light_[hi|low] | alarm/clear | set_alarm/light_[hi|low] | threshold/light_[hi|low] ]]
7E.XXXXXXXXXXXX/EDS0070 [/[ vib_level | vib_peak | vib_min | vib_max | counter/seconds | alarm/vib_[hi|low] | alarm/clear | set_alarm/vib_[hi|low] | threshold/vib_[hi|low] ]]
7E.XXXXXXXXXXXX/EDS007X [/[ temperature | resistance | raw | delay | user_byte | calibration/[key|constant] | counter/[seconds|samples] | alarm/temp_[hi|low] | alarm/RTD_[hi_low] | alarm/clear | set_alarm/temp_[hi|low] | set_alarm/RTD_[hi_low] | threshold/temp_[hi|low] | threshold/RTD_[hi_low] ]]
7E.XXXXXXXXXXXX/EDS0080 [/[ current.[0-7|ALL] | max_current.[0-7|ALL] | min_current.[0-7|ALL] | threshold/current_hi.[0-7|ALL] | threshold/current_low.[0-7|ALL] | alarm/current_hi.[0-7|ALL|BYTE] | alarm/current_low.[0-7|ALL|BYTE] | set_alarm/current_hi.[0-7|ALL|BYTE] | set_alarm/current_low.[0-7|ALL|BYTE] | counter/seconds | memory | pages/page.[0-4|ALL]
7E.XXXXXXXXXXXX/EDS0082 [/[ volts.[0-7|ALL] | max_volts.[0-7|ALL] | min_volts.[0-7|ALL] | threshold/volts_hi.[0-7|ALL] | threshold/volts_low.[0-7|ALL] | alarm/volts_hi.[0-7|ALL|BYTE] | alarm/volts_low.[0-7|ALL|BYTE] | set_alarm/volts_hi.[0-7|ALL|BYTE] | set_alarm/volts_low.[0-7|ALL|BYTE] | counter/seconds | memory | pages/page.[0-4|ALL]
7E.XXXXXXXXXXXX/EDS009X [/[ input.[0-7|ALL] | counter/[seconds | pulses.[0-7|ALL]|reset.[0-7|ALL|BYTE]] | output/[set.[0-7|ALL|BYTE]|off.[0-7|ALL|BYTE]|reset.[0-7|ALL|BYTE]] | latch/[state.[0-7|ALL|BYTE]|reset.[0-7|ALL|BYTE]] | alarm/[hi.[0-7|ALL]|low.[0-7|ALL]|clear] | set_alarm/[hi.[0-7|ALL]|low.[0-7|ALL]]
7E.XXXXXXXXXXXX/EDS00XX/LED/[state|control]
7E.XXXXXXXXXXXX/EDS00XX/relay/[state|control]
read-only, floating-point
Temperature for the EDS006X series of chips. In the -55C to 125C range, with
0.0636C precision. The temperature is read every second, continually. Data
is presented in the specified temperature scale, Celsius by default.
read-only, floating-point
Temperature for the EDS007X series of chips. Read using a wide-range precise
RTD sensor. Typical range is -60C to 260C with 0.15C accuracy, although a
range of -200C to 850C is possible. The temperature is read every second
unless a longer EDS007X/delay is given. Data is presented in the
specified temperature scale, Celsius by default.
read-only, floating-point
Actual measured resistance (Ohms) of the RTD element. Useful if the RTD
element doesn't conform to the typical European IEC 60751 standard.
read-only, floating-point
Relative humidity in the 0-100 range (percent). Read every 0.2 seconds.
read-only, floating-point
Dew point computed from EDS006X/temperature and EDS006X/humidity
computered every 0.2 seconds. Data is a calculated temperature and is
reported in the specified temperature scale. Default Celsius.
read-only, floating-point
Heat index computed from EDS006X/temperature and
EDS006X/humidity computered every 0.2 seconds. Data is a calculated
temperature and is reported in the specified temperature scale. Default
Celsius.
read-only, floating-point
Humidex (popular in Canada) computed from EDS006X/temperature and
EDS006X/humidity computed every 0.2 seconds. Data is a percent and
reported in the 0-100 range.
read-only, unsigned integer
Ambient light in Lux. Measured every 0.2 seconds.
read-only, floating-point
Ambient pressure, measured every 0.2 seconds. Data in the selected pressure
scale (default mBar).
read-only, floating-point
Ambient pressure, measured every 0.2 seconds. Data in the inHg scale.
read_only, unsigned integer
Vibration registered by sensor (instantaneous value) in 0-1023 range.
read_only, unsigned integer
Vibration registered by sensor (highest recent value -- slowly decays) in
0-1023 range.
read_only, unsigned integer
Vibration registered by sensor (lowest value) in 0-1023 range.
read_only, unsigned integer
Vibration registered by sensor (highest value) in 0-1023 range.
The EDS0080 and EDS0083 measure current in the 4-20mA range, with upper and threshold limits and the ability to set an alarm and independently trigger a relay if the value is out of range.
read-only, floating point
Current current level. (4-20mA)
read-only, floating point
Maximum and minimum current readings since last alarm/clear
command.
The EDS0082 and EDS0085 measure voltage in the 0-10V range, with upper and threshold limits and the ability to set an alarm and independently trigger a relay if the value is out of range.
read-only, floating point
Current voltage level. (0-10V)
read-only, floating point
Maximum and minimum voltage readings since last alarm/clear
command.
High and low range of acceptable sensor readings. Values outside this range will trigger an alarm if the corresponding EDS00XX/set_alarm flag is set.
read-write, floating-point
Threshold temperatures in the specified temperature scale. Default
Celsius.
read-write, floating-point
Threshold humidity values. Dew point and Heat index are in the
specified temperature scale. Default Celsius.
read-write, floating-point
Threshold barometric pressure values. Pressure is the specified
pressure scale. Default mBar.
read-write, unsigned
Threshold light (lux) values.
read-write, unsigned
Vibration sensor alarm limits in 0-1023 range.
read-write, floating-point
Threshold RTD resistance values (Ohm).
read-write, floating-point
Voltage or current threshold limits
Set conditional alarm to trigger if corresponding flag is set. Also must set high and low threshold.
read-write, yes-no
Flag to set corresponding out-of-range alarm. "1" turns on flag, and
"0" turns off.
Show or clear the out-of-range flags. When set, the device will respond to a conditional search. Clearing the flags is performed with the EDS00XX/alarm/clear command, not just having the measured value return to the center range.
write-only, yes-no
Write "1" to clear ALL the alarm flags.
read-only, yes-no
Show corresponding out-of-range alarm. "1" means in alarm state. Can
only be turned off with clear
Optionally found on the EDS006X and EDS007X. Can be controlled by software or the alarm condition.
read-write, unsigned
Set the relay control scheme:
read-write, yes-no
Turn the relay on or off if the EDS00XX/relay/control is set to 2
Found on the EDS006X and EDS007X. Can be controlled by software or the alarm condition.
read-write, unsigned
Set the LED control scheme:
read-write, yes-no
Turn the LED on or off if the EDS00XX/LED/control is set to 2
read-only, unsigned integer
Approximate seconds since power up.
read-only, unsigned integer
Pulses on each channel since power up or reset. Channel should be set to input
( EDS0090/output/set.x =0 )
read-write, yes-no
Clear the pulse count on the corresponding channel.
read-only, unsigned integer
Approximate samples since power up.
read-write, binary
96 bytes of memory. Not all is writable. Access to EDS00XX functions is
better accomplished through the data fields, which expose all the chip
features.
read-write, binary
Memory is split into 3 pages of 32 bytes each. Only page 2 is writable.
ALL is an aggregate of the pages. Each page is accessed
sequentially.
read-write, binary
160 bytes of memory. Not all is writable. Access to EDS008X functions
is better accomplished through the data fields, which expose all the chip
features. The EDS008X has more memory than the other chips, so a
separate entry in the sudbirectory makes it available.
read-write, binary
Memory is split into 5 pages of 32 bytes each. Only page 5 is writable. The
EDS008X has more memory than the other chips, so a separate entry in
the sudbirectory makes the extra pages available. ALL is an aggregate
of the pages. Each page is accessed sequentially.
read-only, ascii
Text description of the device. Up to 30 characters.
read-only, ascii
Device name. E.g: "EDS0071"
read-only, unsigned
Number corresponding to the hexadecimal type. E.g:
EDS0071 -> 0x0071 -> 113 in decimal
read-only, ascii
The entire 64-bit unique ID. Given as upper case hexadecimal digits (0-9A-F).
address starts with the family code
r address is the address in reverse order, which is often used
in other applications and labeling.
read-only, ascii
The 8-bit error correction portion. Uses cyclic redundancy check. Computed
from the preceding 56 bits of the unique ID number. Given as upper case
hexadecimal digits (0-9A-F).
read-only, ascii
The 8-bit family code. Unique to each type of device. Given as upper
case hexadecimal digits (0-9A-F).
read-only, ascii
The 48-bit middle portion of the unique ID number. Does not include the family
code or CRC. Given as upper case hexadecimal digits (0-9A-F).
r id is the id in reverse order, which is often used in other
applications and labeling.
read-only, ascii
Uses an extension of the 1-wire design from iButtonLink company that
associated 1-wire physical connections with a unique 1-wire code. If the
connection is behind a Link Locator the locator will show a unique
8-byte number (16 character hexadecimal) starting with family code FE.
If no Link Locator is between the device and the master, the
locator field will be all FF.
r locator is the locator in reverse order.
read-only, yes-no
Is the device currently present on the 1-wire bus?
read-only, ascii
Part name assigned by Dallas Semi. E.g. DS2401 Alternative packaging
(iButton vs chip) will not be distiguished.
None.
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 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.
The EDS00XX sensors are a family of devices from Embedded Data Systems. Although provisional support for several types is included, only early EDS0071 has been tested with OWFS.
The sensors all share the same 7E family code. They have the same first memory page layout with a text tag property that describes them, and a sub-type field giving the particular sensor. The data properties shown in a directory listing will be specific to the sensor sub-type.
The EDS0071 (3) is a micro-processor based 1-wire slave made by EDS (Embedded Data Systams). Is uses a high accuracy and extended range RTD sensor to accurately measure temperatures.
The EDS00XX sensors are read and controlled by accessing parts of their on-chip memory. Although the raw memory contents are exposed in the memory and pages fields, all the available functionality is best accessed by the other fields. In fact, directly changing memory will confuse OWFS.
All the EDS00XX sensors have an LED and optional relay. Both can be controlled either directly, or when the sensors reaches an alarm state.
All 1-wire devices are factory assigned a unique 64-bit address. This address is of the form:
Addressing under OWFS is in hexadecimal, of form:
where 01 is an example 8-bit family code, and 12345678ABC is an example 48 bit address.
The dot is optional, and the CRC code can included. If included, it must be correct.
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) InfernoEmbedded (3)
DS1822 (3) DS1825 (3) DS1820 (3) DS18B20 (3) DS18S20 (3) DS1920 (3) DS1921 (3) DS1821 (3) DS28EA00 (3) DS28E04 (3) EDS0064 (3) EDS0065 (3) EDS0066 (3) EDS0067 (3) EDS0068 (3) EDS0071 (3) EDS0072 (3) MAX31826 (3)
DS1922 (3) DS2438 (3) EDS0065 (3) EDS0068 (3)
DS2450 (3)
DS2890 (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)
DS2423 (3)
LCD (3) DS2408 (3)
DS1977 (3)
DS2406 (3) TAI8570 (3) EDS0066 (3) EDS0068 (3)
EEEF (3) DS2438 (3)
http://www.owfs.org
Paul Alfille (paul.alfille@gmail.com)
| 2003 | OWFS Manpage |