[Avila] watchdog on avila (GW-2348)

[Chris Lang]

Al,

We have done a bunch of software updates and I forgot about the fact
that we are able to get to programming in less than one second and
during programming we are able to strobe the watchdog. So, I stand
corrected. 

Yes, you are able to program with the linux utility with the watchdog
strobe resistor in place.

Thanks for the correction,

-- 
Chris Lang
Gateworks Corporation
3026 S. Higuera, San Luis Obispo, CA 93401
Ph: 805-781-2000 Fax: 805-781-2001
Email: clang at gateworks.com
Web: www.gateworks.com


On Mon, 2008-05-12 at 13:56 -0400, Al Caliskan wrote:
> Chris and Tim,
> 
> I do not use any special software that strobes the DS1819 watchdog
> device, because in my setup strobing is achieved by configuring GPIO14
> as a 4.7 MHz clock (Redboot takes care of configuring the GPIO14 pin).
> I also understand that if GPIO14 were not configured properly, and the
> watchdog were not strobed, then I would be having the problem you
> mentioned (watchdog triggered resets).  I just wanted to point out to
> the difference between software and hardware strobing methods here.
> 
> However, my main concern is that Chris's email states:
> > There is also issues with programming the boards through jtag with the
> > watchdog resistor loaded, this has been resolved with the DOS version of our
> > utility, but no other jtag programmers/debuggers currently work with the
> > resistor loaded.
> 
> Clearly, Chris stated that JTAG with the R11 resistor loaded works
> only in DOS.  And just to be safe, if Chris's original statement was
> incorrect, I would also like him to confirm that.
> 
> Chris:  I will be waiting for a reply from you and a clarification to
> this topic.  My company is having a large number of products
> comprising Avila boards built this week, and we will be installing the
> R11 resistor.  Therefore, would like to make sure that we will not be
> encountering any unexpected problems.
> 
> - Al
> 
> 
> Tim Harvey wrote: 
> > The 'problem' is that the watchdog will trip and reset your board.  If
> > its not occurring to you then your using a version of the software that
> > tickles the watchdog while its programming.
> > 
> > Tim
> > 
> > ----- Original Message ----
> > From: Al Caliskan <acaliskan at gmail.com>
> > To: Chris Lang <chris at ccbw.net>
> > Cc: avila at lists.gateworks.com
> > Sent: Friday, May 9, 2008 9:56:28 AM
> > Subject: Re: [Avila] watchdog on avila (GW-2348)
> > 
> > Chris,
> > 
> > Chris Lang wrote:
> >   
> > > There is also issues with programming the boards through jtag with the
> > > watchdog resistor loaded, this has been resolved with the DOS version of our
> > > utility, but no other jtag programmers/debuggers currently work with the
> > > resistor loaded.
> > >  
> > >     
> > I am able to reliably JTAG program an Avila board with the R11 resistor 
> > installed. I programmed and verified the flash memory contents of the 
> > same board 10 times, and every time it worked. I am using a GW16012 Rev 
> > D JTAG programmer in Linux.
> > 
> > Could you in more detail describe the problem that will occur when an 
> > Avila with R11 installed is JTAG programmed. Does the problem apply to 
> > all Avila hardware revisions? How can I replicate the problem in Linux 
> > using the GW16012 Rev D programmer?
> > 
> > Thank you,
> > 
> > - Al
> > 
> > 
> > _______________________________________________
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> > 
> >   
>