ARM Technical Support Knowledge Articles

USING A WATCHDOG TIMER DURING DEBUGGING

Applies to: ULINK USB-JTAG Debugger

Answer


Information in this article applies to:


QUESTION

I am using the ULINK USB-JTAG Debugger and my program uses a watchdog timer. Right after initialization of the Watchdog, ULINK stops communicating. Is it not possible to use ULINK for debugging programs that are using a Watchdog?

ANSWER

It depends on the implementation of the Watchdog timer on the physical chip. You need to check if the device that you are using stops the watchdog timer (or other peripherals) when the breakmode is entered. Sometimes devices have configuration registers for that, that need to be set in the startup code.

If you are in doubt, disable the watchdog timer during program debugging.

MORE INFORMATION

Article last edited on: 2007-01-28 19:21:33

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