Re: [avrdude-dev] programming 128

[Erick Castillo]

The bits read all zeroes because of some strange electrical problem I'm
having. For some reason, when I start the board up at 5 volts, the
controller doesn't respond nicely... in fact, it does nothing. If I step
up the voltage, I notice that the controller responds to 3 volts and runs
the loaded program just fine. I've got the atmega128 which is rated to
operate between 4.5-5.5V so it should work fine with 5V at boot up. Any
ideas why the controller only works when initiated with 3.5-3.7V?

(I realize this might not be the right place to post this, but i'll give
it a shot)

--Erick


On Thu, 15 May 2003, Brian Dean wrote:

> On Thu, May 15, 2003 at 04:42:00PM +0200, Joerg Wunsch wrote:
>
> > Two of them are defined (there's also the watchdog enable fuse in the
> > extended fuse bits).
>
> Ah, yes, you are correct.  I forgot about the watchdog enable bit.
>
> > However, avrdude masks out unused bits to 0,
> > IIRC.  So the above would read as both fuse bits (bit0 and bit1) to be
> > set (0), the remainder masked out.
>
> The unused bits on mine read out as 1's, not 0's.  I'm not sure why
> Erick's are coming out as 0's.
>
> -Brian
> --
> Brian Dean
> address@hidden
> http://www.bsdhome.com/
> http://www.bdmicro.com/
>
>
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