DS1822(3) One-Wire File System DS1822(3)NAMEDS1822 - Econo 1-Wire Digital Thermometer
SYNOPSIS
Thermometer.
22 [.]XXXXXXXXXXXX[XX][/[ | die | power | temphigh | templow | trim |
trimblanket | trimvalid | ]]
FAMILY CODE
22
SPECIAL PROPERTIES
power
read-only,yes-no
Is the chip powered externally (=1) or from the parasitically from the
data bus (=0)?
temperature
read-only, floating point
Measured temperature with 12 bit resolution.
temperature9 temperature10 temperature11 temperature12
read-only, floating point Measured temperature at 9 to 12 bit resolu‐
tion. There is a tradeoff of time versus accuracy in the temperature
measurement.
fasttemp
read-only, floating point
Equivalent to temperature9
STANDARD PROPERTIESDESCRIPTIONDS1822
The DS1822 (3) is one of several available 1-wire temperature sensors.
Alternatives are the DS18S20 (3), DS18B20 (3) as well as tempera‐
ture/voltage measurements in the DS2436 (3) and DS2438 (3). For truly
versatile temperature measurements, see the protean DS1921 (3) Therma‐
chron (3).
Although the DS1822 (3) can select between 4 resolutions, this program
simplifies the interface by only implementing the fastest/roughest and
slowest/best.
ADDRESSINGDATASHEET
http://pdfserv.maxim-ic.com/en/ds/DS1822.pdf
SEE ALSOAVAILABILITY
http://www.owfs.org
AUTHOR
Paul Alfille (paul.alfille@gmail.com)
OWFS Manpage 2003 DS1822(3)