Skip to main content
J
jliu
Visitor II
May 25, 2004
Question

watch dog

  • May 25, 2004
  • 5 replies
  • 1125 views
Posted on May 26, 2004 at 01:54

watch dog

    This topic has been closed for replies.

    5 replies

    S
    s_abbot
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:00

    ben, the WD is enabled at bootup, all you need to do is keep feeding WDRST, to disable the WD then you need to concern yourself with WDKEY.

    Stephen

    [ This message was edited by: sabbot on 14-05-2004 10:06 ]
    J
    jliuAuthor
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:00

    I thought all need to do to enable the watchdog timer is WDKEY = 0. if I don't reset WDRST periodically then will result in a reset of system. But an experiment has showed this way doesn't work. Can anybody tell me why?

    J
    joseph2399
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:00

    Ben007,

    The watchdog timer in the uPSD32xx works well. Have you been able to resolve your issue? If not, please contact us at:

    mailto:apps.psd@st.com

    .

    Please include the following information:

    Name

    Company Name

    Phone Number

    Location (City, State, Country)

    uPSD part number of device being used (3234, 3254, etc.)

    Application

    Projected annual volume (units)

    Regards,

    uPSD Applications Engineering

    [ This message was edited by: uPSD on 18-05-2004 07:20 ]
    J
    jliuAuthor
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:00

    I've figured out the watchdog problem using the trick posted early in this forum. It never works if follow the way stated by ST datasheet.

    L
    lwang
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 12:00

    Could you tell us what that ''trick'' is? Is the watchdog reset by accessing PCON?

    Terms & ConditionsAccessibility statement