• State Resolved
  • Locked Locked
  • Replies 7 replies
  • Subscribers 31 subscribers
  • Views 774 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TM4C129ENCPDT: How to use the RTC?

twelve12pm
Genius 4455 points
Part Number: TM4C129ENCPDT

Hi all,

We have a 32.768 kHz oscillator connected to pin 66 (XOSC0) to provide for a Real Time Clock. But how to use it? I failed to locate any TivaWare APIs for setting up or dealing with the RTC. Nor could I find an example program in TivaWare. Any pointers?

Thanks,

  • 0
    Guru 117855 points

    I was surprised by your, "report of difficulty."      And then - could NOT find RTC data either!

    As a "big fan" of the  "Peripheral Driver Library Guide" - I "searched under "RTC" - and rather than having its own "section/segment" - the bulk of  "RTC Data is cast w/in the "Hibernate Section!"     (who knew - yet there is (some ... although minimal) logic in that.

    Even better - "Searching for "RTC" w/in our 4C123 manual - opened a "Pandora's Box" of  "hits."    (over 100!)     Below - one representative sample:

    I suspect that same investigation of "Hibernate" w/in (your) MCU Manual - will further detail.

    And - I recall "Forum Great" Amit - having answered (many) RTC issues.     (those revealed via your keyword "RTC" w/in the forum search box (up top.)

    Allez!

  • 0 in reply to cb1_mobile
    Genius 4455 points
    Wow. In the "Hibernate" section... Who'd a thunk it?

    Thank you for this. I will read up on it right away.
  • 0 in reply to twelve12pm
    Guru 117855 points
    There is (some) although not (much) logic in such "indirectness."
    I suspect the best "RTC Code Examples" to reside w/in "Forum Search Box results" - keyword: RTC.
  • 0 in reply to cb1_mobile
    Genius 4455 points
    I found the RTC functions. Given that this is part of the Hibernation module, the TivaWare functions for dealing with Real Time Clock and Calendar are in:

    C:\ti\TivaWare_C_Series-2.1.4.178\driverlib\hibernate.c.

    I had a much-too-difficult time finding that.
  • 0 in reply to twelve12pm
    Guru 117855 points

    Indeed it is not, "Especially Intuitive." Did not the first (and only) responding post - well meet your request?    (yet sits as only (suggested) - rather than verified.)

    Follow on readers can,  "Halt their Search" when they encounter the "Verified Answer" - c'est bien?

  • 0 in reply to cb1_mobile
    Genius 4455 points
    Sir yes sir! One green box, coming right up
  • 0 in reply to twelve12pm
    Guru 117855 points

    Thank you, Sir.     As past military officer - "Sir, yes Sir" - echoes from the past. (such response generated when the BNCO asked if we had "locked onto" - the offending/penetrating aircraft.   (we HAD!)
    Had the manual "segmentation/labeling been mine" - I would have (at minimum) labeled the (mystery) chapter as "Hibernate & RTC Module."     Wasting user/specifier time - is NOT how to "Generate Sales!"