DS2415(3) One-Wire File System DS2415(3)NAME
DS2415 /- 1-Wire Time Chip
DS1904 /- RTC (real time clock) iButton
DS2417 /- 1-Wire Time Chip with Interrupt
SYNOPSIS
Real time clock.
24 [.]XXXXXXXXXXXX[XX][/[ date | flags | running | udate | ]]
Clock with interrupts
27 [.]XXXXXXXXXXXX[XX][/[ date | enable | interval | itime | running |
udate | ]]
FAMILY CODE
24 DS2415 DS1904
27 DS2417
SPECIAL PROPERTIES
date
read-write, ascii
26 character date representation of the counter value. Increments once
per second while running
Setting date to a null string will put the current system time.
Accepted date formats are:
Sat[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)
enable
read-write, yes-no
State of the timer interrupt. 0=off 1=running.
interval
read-write, unsigned integer
Interval between timer interrupts. Values: 0-7. See table under
DESCRIPTION for interpretation. itime will reflect the interval cho‐
sen.
itime
read-write, unsigned integer
Interval between timer interrupts. Value in seconds. See table under
DESCRIPTION for interpretation and acceptable values. interval will
reflect the itime chosen.
flags
read-write, unsigned integer
General use data. 4 bits (0-15 accepted values).
running
read-write, yes-no
State of the clock. 0=off 1=running.
udate
read-write, unsigned integer
Time represented as a number. udate increments once per second, while
running is on.
Usually set to unix time standard: number of seconds since Jan 1, 1970.
The date field will be the unix representation of udate and setting
either will change the other.
STANDARD PROPERTIESALARMS
None implemented.
DESCRIPTION
DS2415 DS1904
The DS2415 (3) and DS1904 (3) are simple clocks that can be read on the
1-wire bus. They can also be used the time an event, for remote confir‐
mation.
DS2417
The DS2417 has the same clock function, but also includes a program‐
mable interval interrupt. Values Allowed are:
0 1sec
1 4sec
2 32s = .5m
3 6 = 1m
4 2048s = .5h
5 4096s = 1h
6 65536s = 18h
7 131072s = 36h
ADDRESSINGDATASHEET
http://pdfserv.maxim-ic.com/en/ds/DS2415.pdf
http://pdfserv.maxim-ic.com/en/ds/DS1904.pdf
http://pdfserv.maxim-ic.com/en/ds/DS2417.pdf
SEE ALSOAVAILABILITY
http://www.owfs.org
AUTHOR
Paul Alfille (paul.alfille@gmail.com)
OWFS Manpage 2003 DS2415(3)