Re: [avrdude-dev] Atmega32u2

[Jkx]

On Tue, 27 Jul 2010 07:22:12 +0200
Joerg Wunsch <address@hidden> wrote:

> As Jkx wrote:
> 
> > This is really slow while writing (without any timeout msg).
> 
> Well, not a big surprise, with that slow ISP clock.
> 
> > And worst, the 32u2 has 32k vs 16k on the 162 of
> > course.
> 
> Well, *that* was certainly expected, of course. :-)
> 
> >          SCK period      : 260.5 us
> 
> Try adding -B10 to the commandline.  That should make it substantially
> faster.  I hope it will also cure the misreads.
> 
> > avrdude: Expected signature for AT90USB162 is 1E 94 82
> > avrdude: safemode: lfuse reads as 5E
> > avrdude: safemode: hfuse reads as D9
> > avrdude: safemode: efuse reads as F4
> 
> ATmega32U2 has 1E 95 8A.  The signature read shows that the entire
> read procedure is completely flakey.  At this point, you probably
> shouldn't have used -F at all, to avoid additional failures resulting
> from the poor communication.
> 

Yes, the Atmega32u2 sig is Ok. look in my previous dump:
avrdude: Device signature = 0x1e958a
avrdude: Expected signature for AT90USB162 is 1E 94 82


With the -B10, the speed is Ok, no more timeout, but the verify still 
fails. (content missmatch) 

I just installed an AVR Studio 4. So I will check if the board is Ok. 
(I have a doubt) 


Thanks
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