Forums

watchdog

Started by Joe McCarron February 6, 2005

Using kickstart card with 2106 with the IAR tools.
I can't get watchdog timer to count down.
Running with resident monitor and stepping to see watchdog reg.
values.

I cant seem to write to wdfeed register. It always reads 0.
I can write to wdtc register and see it change.
WDMOD is 0x01 for running in debug mode.
WDTV is always 0xFF, which is its reset value of the WDTIMER
and WDTV.

I dont see any conflicts based on the resources that
the monitor uses based on "ROM_monitor_settings_and_info.pdf"

Thanks
Joe



An Engineer's Guide to the LPC2100 Series

At 05:53 PM 2/6/05 +0000, Joe McCarron wrote:
>I cant seem to write to wdfeed register. It always reads 0.

The feed register is a write only register. You cannot (should not?) read it.

>I can write to wdtc register and see it change.
>WDMOD is 0x01 for running in debug mode.
>WDTV is always 0xFF, which is its reset value of the WDTIMER
>and WDTV.


Also the two writes to the feed register MUST be back to back write cycles
on the bus.

Robert

" 'Freedom' has no meaning of itself. There are always restrictions,
be they legal, genetic, or physical. If you don't believe me, try to
chew a radio signal. "

Kelvin Throop, III