watch dog

jliu · ‎2004-05-25

Posted on May 26, 2004 at 01:54

watch dog

s_abbot · ‎2011-05-17

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 ]

jliu · ‎2011-05-17

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?

joseph2399 · ‎2011-05-17

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 ]

jliu · ‎2011-05-17

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.

lwang · ‎2011-05-17

Posted on May 17, 2011 at 12:00

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