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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 |

       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)

OWFS Manpage                         2003                            DS2415(3)

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