AVR-Chat

On Fri, May 20, 2005 at 05:46:24PM -0000, Graham Davies wrote:

> Let's not forget that you don't need the clock running to program
> the MCU, or even to correct problems with the fuses, if you have a
> JTAG interface. The MAVRIC boards have JTAG headers. The OP could
> pick up an inexpensive JTAG interface, see if fuses are indeed his
> problem and maybe even return the JTAG interface afterwards if they
> are not.

Yes, this is true, as long as the JTAGEN fuse was not inadvertantly
disabled as well :-) I guess the same holds for the SPIEN fuse, though
it is not supposed to be able to be changed when programming using the
SPI interface, but then again, strange things can happen during
brown-out.

If he wanted to try an inexpensive JTAG device, I would certainly
recommend yours at:

   http://www.ecrostech.com/Products/AvrJtagIce/Intro.htm

BTW, do you plan to do one that supports the JTAGICE MkII protocol?
I'm just curious because AVRDUDE now supports the JTAGICE MkII
protocol, but does not yet support the original JTAGICE protocol.

-Brian
-- 
Brian Dean
BDMICRO - ATmega128 Based MAVRIC Controllers
http://www.bdmicro.com/