other versions
- jessie 2.9p8-6
- stretch 3.1p5-1
- testing 3.2p2-2
- stretch-backports 3.2p2-2~bpo9+1
- unstable 3.2p3+dfsg1-2
DS2437(3) | One-Wire File System | DS2437(3) |
NAME¶
DS2437 - Smart Battery MonitorSYNOPSIS¶
Temperature Voltages and Memory. 1E [.]XXXXXXXXXXXX[XX][/[ current | date | disconnect/date | disconnect/udate | endcharge/date | endcharge/udate | Ienable | pages/page.[0-7|ALL] | temperature | udate | VAD | VDD | address | crc8 | id | locator | r_address | r_id | r_locator | type ]]FAMILY CODE¶
1ESPECIAL PROPERTIES¶
date¶
read-write, asciiSat[urday] March 12 12:23:59 2001
Apr[il] 4 9:34:56 2002
3/23/04 23:34:57
current locale setting (your system's format)
current¶
read-only, integerdisconnect/date¶
read-write, asciidisconnect/udate¶
read-write, unsigned integerendcharge/date¶
read-write, asciiendcharge/udate¶
read-write, unsigned integerIenable¶
read-write, unsigned integer- 0
- no current conversion
- 1
- current conversion enabled
- 2
- current conversion and accumulation
- 3
- current conversion and accumulation with EEPROM backup
pages/page.0 ... pages/page.7 pages/page.ALL¶
read-write, binarytemperature¶
read-only, floating pointudate¶
read-write, unsigned integerVAD VDD¶
read-only, floating pointSTANDARD PROPERTIES¶
address¶
r_address¶
read-only, asciicrc8¶
read-only, asciifamily¶
read-only, asciiid¶
r_id¶
read-only, asciilocator¶
r_locator¶
read-only, asciipresent (DEPRECATED)¶
read-only, yes-notype¶
read-only, asciiALARMS¶
None.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 priciple 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 fundemental goal has been ease of use, flexibility and correctness rather than speed.DS2437¶
The DS2437 (3) is an obsolete version of the DS2438 (3) battery chip. Current sensing is available, but not implemented. The major advantage compared to the DS2436 is that two voltages can be read, allowing correcting circuit nmeasurements to supply voltage and temperature. A better comparison is the DS276x family of chips.ADDRESSING¶
All 1-wire devices are factory assigned a unique 64-bit address. This address is of the form:- Family Code
- 8 bits
- Address
- 48 bits
- CRC
- 8 bits
- 01.123456789ABC
DATASHEET¶
http://pdfserv.maxim-ic.com/en/ds/DS2437.pdfSEE 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) EDS0064 (3) EDS0065 (3) EDS0066 (3) EDS0067 (3) EDS0068 (3) EDS0071 (3) EDS0072 (3) MAX31826 (3)Humidity¶
DS1922 (3) DS2438 (3) EDS0065 (3) EDS0068 (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 EDS0066 (3) EDS0068 (3)Moisture¶
EEEF (3) DS2438 (3)AVAILABILITY¶
http://www.owfs.orgAUTHOR¶
Paul Alfille (paul.alfille@gmail.com)2003 | OWFS Manpage |