Re: [avr-gcc-list] atmega16

[Douglas Dotson]

So are you saying that having a JTAG interface
is not compatable with using the ADC. Do I have
to use the ISP instead? Seems strange that if the
JTAG is on the same port as the ADC renders
the other useless.

DOug

--- Geoffrey Wossum <address@hidden> wrote:

> On Tuesday 28 December 2004 11:43 am, Douglas Dotson
> wrote:
> > In a somewhat related question, the MEGA128 has
> > the JTAG interface on the same port as the ADC
> > (Port F). Is this a problem or are all the JTAG
> > pins quiescent when the MEGA128 is running the
> > application?
> 
> You must turn the JTAGEN fuse off if your
> application uses any of the JTAG 
> pins!  Otherwise you'll tear your hair out debugging
> the problem!  
> 
> There's now a large sign over our production
> programming station that reads:
> 
> Did you cycle the power?
> Did you jiggle the cable?
> Did you turn JTAGEN off?
> 
> ---
> Geoffrey Wossum
> Long Range Systems - http://www.pager.net
> 
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