AVR-Chat

> -----Original Message-----
> From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On
> Behalf Of Kenny M.
> Sent: Thursday, 21 January 2010 4:49 PM
> To: AVR-Chat@yahoogroups.com
> Subject: Re: [AVR-Chat] Re: AVRISP -> AtTiny Communication Problem
> 
> Feel free to jump in I need all the help I can get lol
> 
<snip>

> 3b. Not sure what your target micro is but note that some (eg.
> atmega128) do not use MISO/MISO pin for programming
>     AtTiny15L
> 
> 4. What exactly is the error message from AVR studio? I always first
> try to 'Read Signature' (from the 'Main tab')
> Yeah I've been using read signature too, I get:
>    Setting mode and device parameters.. OK!
>    Entering programming mode.. FAILED!
>    Leaving programming mode.. OK!
> Not too helpful lol
> 

Hmm, this is funny.
Can you tell us more detail about your target hardware. Is it 'known good'?
How you have the ATTiny15L connected? (Do you have a schematic?)

You mentioned LEDs on the AVRSIP. What colour are they? Frankly I do not
take much notice of them (when it just works) but there is a detailed
description of the status leds for the AVRISP in the AVR Studio 'AVR Tools'
Help file. 

Do you have an oscilloscope? If so check you might check then signals coming
from the programmer.

I am stumped. You need to first determine whether it's the AVRISP or the
target hardware (FWIW my gut feel is that it's not the ISP). Do you have
other target hardware you can try with?

What part if the world are you located in? 
I am in Sydney AU, you are welcome to drop into my office and we can spend a
few minutes with my AVRISP to check your hardware.

Ivan

> Thanks,
> 
> Kenny
> 
> ----- Original Message -----
> From: "Ivan Vernot" <ivernot@optushome.com.au>
> To: AVR-Chat@yahoogroups.com
> Sent: Wednesday, January 20, 2010 11:01:12 PM GMT -05:00 US/Canada
> Eastern
> Subject: RE: [AVR-Chat] Re: AVRISP -> AtTiny Communication Problem
> 
> Hello,
> Sorry to jump into the middle of the thread but I just wanted to say
> that in my experience the AVRISP MkII is quite robust and (knock on
> wood) I have had no reliability problems with it ever.
> 
> Apologies if this has already been covered but have you checked -
> 1. Are you certain that your target micro is OK?
> 2. Check that you ISP Freq is no more the 1/4 of the CPU clock freq
> 3. Check that you have the connection correct -
> 3a. In particular check MISO and MISO (I still get them the wrong way
> around!)
> 3b. Not sure what your target micro is but note that some (eg.
> atmega128) do not use MISO/MISO pin for programming
> 4. What exactly is the error message from AVR studio? I always first
> try to 'Read Signature' (from the 'Main tab')
> 
> HTH
> Ivan Vernot
> 
> 
> 
> 
> 
> 
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