LPC2102, with i2c and watchdog

Started by chiu...@yahoo.com.hk December 13, 2006
hello,

i\'m a newbie (and also an outsider of electronics) so my question sounds a bit stupid...

now i\'m using LPC2102, and the watchdog works perfectly (device reboots when watchdog not fed within the preset time) when i2c is not in use. however, when i2c is in use the device will keep rebooting again and again. it seems that the watchdog crashes with the i2c interrupt. please kindly advise what i should check.

thank you very much.

riedle

An Engineer's Guide to the LPC2100 Series

At 09:48 AM 12/12/2006 -0500, c...@yahoo.com.hk wrote:
>now i\'m using LPC2102, and the watchdog works perfectly (device reboots
>when watchdog not fed within the preset time) when i2c is not in
>use. however, when i2c is in use the device will keep rebooting again and
>again. it seems that the watchdog crashes with the i2c interrupt. please
>kindly advise what i should check.

First disable the watchdog and make sure the reset isn't coming from the
IIC code. In general i usual enable the watchdog as one of the last steps
in developing new firmware.

Robert
Another sign of the end of civilization, our technical magazines are
getting chatty
From an EETimes product descriptions 2006/08/09
".... systems that can sample gobs of inputs simultaneously"
Now just what is the technical definition for gobs again?
http://www.aeolusdevelopment.com/