| DS2415(3) | One-Wire File System | DS2415(3) |
NAME
DS2415, DS1904, DS2417 - 1-Wire Time Chip, RTC (real time clock) iButton, 1-Wire Time Chip with Interrupt
SYNOPSIS
Real time clock.
24 [.]XXXXXXXXXXXX[XX][/[ date | flags | running |
udate |
See the file man3/standard_mini.3so.
]]
Clock with interrupts
27 [.]XXXXXXXXXXXX[XX][/[ date | enable | interval
| itime | running | udate |
See the file man3/standard_mini.3so.
]]
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 chosen.
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 PROPERTIES
See the file man3/standard.3so.
ALARMS
None implemented.
DESCRIPTION
See the file man3/description.3so.
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 confirmation.
DS2417
The DS2417 has the same clock function, but also includes a
programmable 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
ADDRESSING
See the file man3/addressing.3so.
DATASHEET
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 ALSO
See the file man3/seealso.3so.
AVAILABILITY
http://www.owfs.org
AUTHOR
Paul Alfille (paul.alfille@gmail.com)
| 2003 | OWFS Manpage |