HobbyBoards_EE/EF(3) One-Wire File System HobbyBoards_EE/EF(3)NAME
- HobbyBoards EE/EF Microprocessor-based slaves:
Ultra Violet (UV) Index sensor, Soil and Leaf moisture measure‐
ments, Barometer, 4-channel hub with switchable branches
SYNOPSIS
General EE device
EE [.]XXXXXXXXXXXX[XX][/[ temperature | version | type_number | temper‐
ature_offset | ]]
UVI sensor
EE [.]XXXXXXXXXXXX[XX][/[ UVI/UVI | UVI/UVI_offset | UVI/in_case |
UVI/valid | temperature | version | type_number | temperature_offset ]]
General EF device
EF [.]XXXXXXXXXXXX[XX][/[ version | type_number | ]]
Moisture Meter
moisture/sensor.[0-3|ALL]
moisture/is_moisture.[0-3|ALL|BYTE] | moisture/is_leaf.[0-3|ALL|BYTE]
moisture/calibrate/min | moisture/calibrate/max | moisture/cali‐
brate/raw.[0-4|ALL]
Hub
hub/branch.[0-3|ALL|BYTE] | hub/short.[0-3|ALL|BYTE]
FAMILY CODE
EE Device with temperature
EE UVI
EF Device without temperature
EF Moisture Meter
EF Hub
TEMPERATURE PROPERTIES
temperature
read-only, floating point
Temperature read every 30 seconds. Resolution .5C (uses an on-board
DS18B20). Temperature is only present in the EE-series devices.
temperature_offset
read-write, floating point
Offset stored on device to apply to temperature readings.
UVI PROPERTIES
UVI/UVI
read-only floating point
UV Index (ultraviolet index) in the range 0.0 to 16.0 resolution .1
Only the UVI version of the EE device has a UVI sensor. Readings made
every .5 seconds.
UVI/UVI_offset
read-write, floating point
Signed offset to apply to the UVI measurement. Stored on-device non-
volatile.
UVI/in_case
read-write, yes-no
Flag to apply compensation for the protective case. Stored on-device
non-volatile.
UVI/valid
read-only, yes-no Flag the the EE device type matches the known UVI
type.
Moisture Meter
moisture/sensor.0 .. moisture/sensor.3 moisture/sensor.ALL
read-only integer
Up to 4 sensors reading moisture can be attached. OWFS addresses the
sensors as 0 through 3 while the datasheet uses 1-4. Two types of
external sensors are supported (and the data range):
Watermark Soil Moisture Sensor
0-199
Leaf Wetness Sensor
0-99
moisture/is_moisture.0 .. moisture/is_moisture.3 moisture/is_moisture.ALL
moisture/is_leaf.0 .. moisture/is_leaf.3 moisture/is_leaf.ALL
read-write yes_no
Set or get the type of sensor attached to each channel. Note that OWFS
addresses the sensors as 0 through 3 while the datasheet uses 1-4. Two
types of external sensors are supported:
Watermark Soil Moisture
Sensor
Leaf Wetness
Sensor
Note that is_leaf and is_moisture are complementary and clearing one
sets the other.
moisture/calibrate/min
moisture/calibrate/max
read-write unsigned integer
Set or get the upper and lower range for the raw data for leaf wetness
scaling. See the datasheet for details.
moisture/calibrate/raw.0 .. moisture/calibrate/raw.3 moisture/cali‐
brate/raw.ALL
read-only unsigned integer
Read the raw leaf wetness values for setting scaling. See the datasheet
for details. Note that OWFS addresses the sensors as 0 through 3 while
the datasheet uses 1-4.
Hub
4-channel hub. Individual branches can be switched on and off.
hub/branch.0 .. hub/branch.3 hub/branch.ALL hub/branch.BYTE
read-write, yes-no
The HobbyBoards hub has four 1-wire bus lines. Each branch is electri‐
caly isolated from reflections and shorts, and can be optionally
excluded from the 1-wire network.
You can turn each branch on or off by writing 0 (off) or 1 (on) to the
corresponding property. Note that OWFS indexes the branches 0 to 3
while the datasheet uses 1 to 4.
The easiest way to turn all the branches on is to write 15 (0x0F) to
hub/branch.BYTE
hub/short.0 .. hub/short.3 hub/short.ALL hub/short.BYTE
read-only, yes-no
Is the corresponding branch in "short" condition? (Electrically shorted
out).
IDENTIFICATION PROPERTIES
version
read-only, ascii
Firmware version for the EE/EF device. Reported in nn.nn format where
nn is major/minor decimal value.
Note: This format was changed as of version owfs-2.9p6 at the request
of the HobbyBoards. Formerly reported in HH.HH format where HH is a hex
digit (0-9A-F).
type_number
read-only, integer
Index of the type of sensor built into this device. Current known
assignments:
1 UVI (Ultraviolet index)
2 Moisture meter
3 Moisture meter with datalogger
4 Sniffer
5 Hub
STANDARD PROPERTIESALARMS
None
DESCRIPTION
EE / EF
The EEEF (3) are a reference platform of microprocessor based 1-wire
slaves. In general they require external power, and have an on-board
index for the specific capabilities. They are designed by Eric Vickery
at HobbyBoards.com
The EE class device uses family code EE and has an included temperature
sensor. The EF devices have no temperature sensor,
UVI
The UVI sensor is an implementation of the EE class device with Ultra
Violet Index sensing. All it's specific properties are in the UVI/
directory.
ADDRESSINGDATASHEETUVI http://www.hobby-boards.com/cata‐
log/links/uvi2-r1/UVI%20Meter%20User%20Manual.pdf
Moisture and Leaf Sensor
http://www.hobby-boards.com/download/manuals/Mois‐
ture%20Meter.pdf
4 Channel Hub
http://www.hobby-boards.com/download/manuals/4%20Chan‐
nel%20Hub.pdf
SEE ALSOAVAILABILITY
http://www.owfs.org
AUTHOR
Paul Alfille (paul.alfille@gmail.com)
OWFS Manpage 2009 HobbyBoards_EE/EF(3)
