Re: [ECOS] Hardware Watchdog

[Robin Farine <acnrf at dial dot eunet dot ch>]

Christoph Csebits <christoph.csebits@frequentis.com> writes:

> On Thu, Jul 26, 2001 at 08:24:59PM +0200, Robin Farine wrote:
> > Christoph Csebits <christoph.csebits@frequentis.com> writes:
> > 
> > Does your board use an external chip such as the Maxim MAX691A as watchdog? And
> > if yes, does it use a GPIO pin of the CPU to keep the watchdog quiet?
> 
> Yes you are right (MAX690T) and it is served an a GPIO pin (PortB) of
> the MPC.

Ok, have you already tried to configure the GPIO pin as *input*? This would
set the line in high-impedance mode and the MAX should disable its watchdog
function. Check your ROM startup code for access to the GPDR (IO direction
register). Then, in the application, reconfigure this bit as output to use the
watchdog.

Robin