Re: [avrdude-dev] avrisp mk II in linux

[Naveen Goswamy]

Which part should I specify?

looking at the guts of the avrisp2 i can see a mega128 on board, though 
doing

# avrdude -c avrispv2 -p m128 -P usb -tuF

I get

avrdude: stk500v2_command(): command failed
avrdude: initialization failed, rc=-1
avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0xffffff
avrdude: Yikes!  Invalid device signature.
avrdude: Expected signature for ATMEGA128 is 1E 97 02

avrdude >



On Wed, 20 Dec 2006, Joerg Wunsch wrote:

> As Naveen Goswamy wrote:
>
> > avrdude: stk500v2_command(): command failed
> > avrdude: initialization failed, rc=-1
>
> > I'm assuming this error is mine, when trying to connect the chip to
> > the device via breadboard.
>
> Slow down the AVRISP.  Make your first connection attempt with "-tuF",
> so you can talk to just the AVRISP in terminal mode.  Adjust the SCK
> frequency to 100 kHz (10 µs SCK period) using the command "sck 10".
>
> Try again then.  If it still fails, it might be the breadboard
> wiring, or a poor Vcc bypass.
> --
> cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL
>
> http://www.sax.de/~joerg/                        NIC: JW11-RIPE
> Never trust an operating system you don't have sources for. ;-)

--

Naveen Goswamy

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